* * * READ ME * * *
                      * * * InfoScale 7.4.2 * * *
                         * * * Patch 2300 * * *
                         Patch Date: 2022-05-14


This document provides the following information:

   * PATCH NAME
   * OPERATING SYSTEMS SUPPORTED BY THE PATCH
   * PACKAGES AFFECTED BY THE PATCH
   * BASE PRODUCT VERSIONS FOR THE PATCH
   * SUMMARY OF INCIDENTS FIXED BY THE PATCH
   * DETAILS OF INCIDENTS FIXED BY THE PATCH
   * INSTALLATION PRE-REQUISITES
   * INSTALLING THE PATCH
   * REMOVING THE PATCH
   * KNOWN ISSUES


PATCH NAME
----------
InfoScale 7.4.2 Patch 2300


OPERATING SYSTEMS SUPPORTED BY THE PATCH
----------------------------------------
SLES15 x86-64


PACKAGES AFFECTED BY THE PATCH
------------------------------
VRTSamf
VRTSaslapm
VRTScavf
VRTScps
VRTSdbac
VRTSdbed
VRTSfsadv
VRTSgab
VRTSglm
VRTSgms
VRTSllt
VRTSodm
VRTSperl
VRTSpython
VRTSsfmh
VRTSvcs
VRTSvcsag
VRTSvcsea
VRTSveki
VRTSvlic
VRTSvxfen
VRTSvxfs
VRTSvxvm


BASE PRODUCT VERSIONS FOR THE PATCH
-----------------------------------
   * InfoScale Availability 7.4.2
   * InfoScale Enterprise 7.4.2
   * InfoScale Foundation 7.4.2
   * InfoScale Storage 7.4.2


SUMMARY OF INCIDENTS FIXED BY THE PATCH
---------------------------------------
Patch ID: VRTSglm-7.4.2.2200
* 4056546 (4056801) GLM support for SLES15 SP3.
Patch ID: VRTSglm-7.4.2.1800
* 4038995 (4038994) GLM module failed to load on SLES15SP2
Patch ID: VRTSperl-5.30.0.2
* 4074770 (4074769) Security vulnerability detected on VRTSperl 5.30.0.0 released with Infoscale 7.4.2.
Patch ID: VRTSdbed-7.4.2.2200
* 4058802 (4073842) Oracle 21c support
Patch ID: VRTSdbed-7.4.2.2100
* 4057566 (4057565) After the vxdbdctrl package installation, the following systemd warning message is logged: "SysV service '/etc/init.d/vxdbdctrl' lacks a native systemd unit file."
Patch ID: VRTSvcsea-7.4.2.2500
* 4064920 (4064917) As a part of Oracle 21c support, fixed the issue Oracle agent fails to generate ora_api using the build_oraapi.sh script
Patch ID: VRTSvcsea-7.4.2.1100
* 4020528 (4001565) On Solaris 11.4, IMF fails to provide notifications when Oracle processes stop.
Patch ID: VRTSdbac-7.4.2.2100
* 4056997 (4056991) Veritas Infoscale Availability (VCS) does not support SUSE Linux Enterprise Server
15 Service Pack 3 (SLES 15 SP3).
Patch ID: VRTSdbac-7.4.2.1300
* 4038117 (4038112) Veritas Infoscale Availability (VCS) does not support SUSE Linux Enterprise Server
15 Service Pack 2 (SLES 15 SP2).
Patch ID: VRTSvcs-7.4.2.2500
* 4059899 (4059897) In some cases, core files get generated after executing the hacf -verify command.
* 4059901 (4059900) On a VCS node, hastop -local is unresponsive.
* 4071007 (4070999) Processes registered under VCS control get killed after running the 'hastop -local -force' command.
Patch ID: VRTSvcs-7.4.2.2100
* 4046515 (4040705) When a command exceeds 4096 characters, hacli hangs indefinitely.
* 4046520 (4040656) When the ENOMEM error occurs, HAD does not shut down gracefully.
* 4046526 (4043700) In case of failover, parallel, or hybrid service groups, multiple PreOnline triggers can be executed on the same node or on different nodes in a cluster while an online operation is in already progress.
Patch ID: VRTSvcs-7.4.2.1600
* 4028658 (4026819) When IPv6 is disabled, non-root guest users cannot run HAD CLI commands.
Patch ID: VRTSsfmh-7.4.2.601
* 4062783 (4062782) VIOM VRTSsfmh package on Linux to fix dclid/vxlist issue with InfoScale VxVM version 7.4.1.3104
* 4062795 (4062794) Random services are failed using ansible on rhel8.4 7.4.1 w/latest patches
* 4071101 (4071100) With AFTER dependency of autofs in the xprtld.service it causes ordering cycles where systemd will randomly delete a service caught up in the cycle.
Patch ID: VRTSvxfs-7.4.2.2600
* 4015834 (3988752) Use ldi_strategy() routine instead of bdev_strategy() for IO's in solaris.
* 4040612 (4033664) Multiple different issues occur with hardlink replication using VFR.
* 4040618 (4040617) Veritas file replicator is not performing as per the expectation.
* 4060549 (4047921) Replication job getting into hung state when pause/resume operations performed repeatedly.
* 4060566 (4052449) Cluster goes in an 'unresponsive' mode while invalidating pages due to duplicate page entries in iowr structure.
* 4060585 (4042925) Intermittent Performance issue on commands like df and ls.
* 4060805 (4042254) A new feature has been added in vxupgrade which fails disk-layout upgrade if sufficient space is not available in the filesystem.
* 4061203 (4005620) Internal counter of inodes from Inode Allocation Unit (IAU) can be negative if IAU is marked bad.
* 4061527 (4054386) If systemd service fails to load vxfs module, the service still shows status as active instead of failed.
Patch ID: VRTSvxfs-7.4.2.2400
* 4013420 (4013139) The abort operation on an ongoing online migration from the native file system to VxFS on RHEL 8.x systems.
* 4040238 (4035040) vfradmin stats command failed to show all the fields in the command output in-case job paused and resume.
* 4040608 (4008616) fsck command got hung.
* 4042686 (4042684) ODM resize fails for size 8192.
* 4044184 (3993140) Compclock was not giving accurate results.
* 4046265 (4037035) VxFS should have the ability to control the number of inactive processing threads.
* 4046266 (4043084) panic in vx_cbdnlc_lookup
* 4046267 (4034910) Asynchronous access/updatation of global list large_dirinfo  can corrupt its values in multi-threaded execution.
* 4046271 (3993822) fsck stops running on a file system
* 4046272 (4017104) Deleting a lot of files can cause resource starvation, causing panic or momentary hangs.
* 4046829 (3993943) A core dump occurs and the fsck operation fails on a file system.
* 4047568 (4046169) On RHEL8, while doing a directory move from one FS (ext4 or vxfs) to migration VxFS, the migration can fail and FS will be disable.
* 4049091 (4035057) On RHEL8, IOs done on FS, while other FS to VxFS migration is in progress can cause panic.
* 4049097 (4049096) Dalloc change ctime in background while extent allocation
* 4056542 (4056797) VxFS support for SLES15 SP3.
Patch ID: VRTSvxfs-7.4.2.1800
* 4022933 (4022983) VFR promote operation might failed during failover of job to new replication source.
* 4023026 (4023702) Named attributes are not getting synced after VFR sync
* 4023856 (4008520) CFS hang in vx_searchau().
* 4023963 (4022710) Replication got failed with core while running multiple replication jobs.
* 4024219 (4026702) ACLs of a file are not matching if few ACL entries are deleted and later VFR sync is performed.
* 4024275 (4009728) Panic while trying to add a hard link.
* 4027627 (4027629) Secondary may falsely assume that the ilist extent is pushed and do the allocation, even if the actual push transaction failed on primary.
* 4038564 (4036018) VxFS module failed to load on SLES15SP2
Patch ID: VRTSveki-7.4.2.2600
* 4057596 (4055072) Upgrading VRTSveki package using yum reports error
Patch ID: VRTSveki-7.4.2.1900
* 4055071 (4055072) Upgrading VRTSveki package using yum reports error
* 4056551 (4056808) VEKI support for SLES15 SP3.
Patch ID: VRTSveki-7.4.2.1800
* 4039063 (4039061) Veki failed to load on SLES15SP2
Patch ID: VRTSfsadv-7.4.2.2600
* 4070366 (4070367) After Upgrade "/var/VRTS/fsadv" directory is getting deleted.
* 4071090 (4040281) Security vulnerabilities exist in the OpenSSL, Xpat, and Sqlite third-party components used by VxFS.
Patch ID: VRTSfsadv-7.4.2.2400
* 4057399 (4057644) Getting a warning in the dmesg i.e. SysV service '/etc/init.d/fsdedupschd' lacks a native systemd unit file.
Patch ID: VRTSgms-7.4.2.2600
* 4057424 (4057176) Rebooting the system results into emergency mode due to corruption of module dependency files.
* 4061646 (4061644) GMS failed to start after the kernel upgrade.
Patch ID: VRTSgms-7.4.2.1900
* 4056547 (4056803) GMS support for SLES15 SP3.
* 4057175 (4057176) Rebooting the system results into emergency mode due to corruption of module dependency files.
Patch ID: VRTSgms-7.4.2.1800
* 4038993 (4038992) GMS module failed to load on SLES15SP2
Patch ID: VRTSodm-7.4.2.2600
* 4057429 (4056673) Rebooting the system results into emergency mode due to corruption of module dependency files. Incorrect vxgms dependency in odm service file.
* 4060584 (3868609) High CPU usage by vxfs thread.
Patch ID: VRTSodm-7.4.2.2400
* 4056545 (4056799) ODM support for SLES15 SP3.
* 4056672 (4056673) Rebooting the system results into emergency mode due to corruption of module dependency files. Incorrect vxgms dependency in odm service file.
Patch ID: VRTSodm-7.4.2.1800
* 4038975 (4036034) ODM module failed to load on SLES15SP2.
Patch ID: VRTSvxvm-7.4.2.3200
* 4011971 (3991668) In a Veritas Volume Replicator (VVR) configuration where secondary logging is enabled, data inconsistency is reported after the "No IBC message arrived" error is encountered.
* 4013169 (4011691) High CPU consumption on the VVR secondary nodes because of high pending IO load.
* 4037288 (4034857) VxVM support on SLES 15 SP2
* 4054311 (4040701) Some warnings are observed while installing vxvm package.
* 4056919 (4056917) Import of disk group in Flexible Storage Sharing (FSS) with missing disks can lead to data corruption.
* 4058873 (4057526) Adding check for init while accessing /var/lock/subsys/ path in vxnm-vxnetd.sh script.
* 4060839 (3975667) Softlock in vol_ioship_sender kernel thread
* 4060962 (3915202) Reporting repeated disk failures & DCPA events for other internal disks
* 4060966 (3959716) System may panic with sync replication with VVR configuration, when the RVG is in DCM mode.
* 4061004 (3993242) vxsnap prepare command when run on vset sometimes fails.
* 4061036 (4031064) Master switch operation is hung in VVR secondary environment.
* 4061055 (3999073) The file system corrupts when the cfsmount group goes into offline state.
* 4061057 (3931583) Node may panic while unloading the vxio module due to race condition.
* 4061298 (3982103) I/O hang is observed in VVR.
* 4061317 (3925277) DLE (Dynamic Lun Expansion) of single path GPT disk may corrupt disk public region.
* 4061509 (4043337) logging fixes for VVR
* 4062461 (4066785) Unable to import diskgroup even replicated disks are in SPLIT mode
* 4062577 (4062576) hastop -local never finishes on Rhel8.4 and RHEL8.5 servers with latest minor kernels due to hang in vxdg deport command.
* 4062746 (3992053) Data corruption may happen with layered volumes due to some data not re-synced while attaching a plex.
* 4062747 (3943707) vxconfigd reconfig hang when joing a cluster
* 4062751 (3989185) In a Veritas Volume Manager(VVR) environment vxrecover command can hang.
* 4062755 (3978453) Reconfig hang during master takeover
* 4063374 (4005121) Application IOPS drop in DCM mode with DCO-integrated DCM
* 4064523 (4049082) I/O read error is displayed when remote FSS node rebooting.
* 4066930 (3951527) Data loss on DR site seen while upgrading from Infoscale 7.3.1 or before to 7.4.x or later versions.
* 4067706 (4060462) Nidmap information is not cleared after a node leaves, resulting in add node failure subsequently.
* 4067710 (4064208) Node failed to join the existing cluster after bits are upgraded to a newer version.
* 4067712 (3868140) VVR primary site node might panic if the rlink disconnects while some data is getting replicated to secondary.
* 4067713 (3997531) Fail to start the VVR replication as vxnetd threads are not running
* 4067715 (4008740) Access to freed memory
* 4067717 (4009151) Auto-import of diskgroup on system reboot fails with error 'Disk for diskgroup not found'.
* 4067914 (4037757) Add a tunable to control auto start VVR services on boot up.
* 4067915 (4059134) Resync takes too long on raid-5 volume
* 4069522 (4043276) vxattachd is onlining previously offlined disks.
* 4069523 (4056751) Import read only cloned disk corrupts private region
* 4069524 (4056954) Vradmin addsec failures when encryption is enabled over wire
* 4070099 (3159650) Implemented vol_vvr_use_nat tunable support for vxtune.
* 4070253 (3911930) Provide a way to clear the PGR_FLAG_NOTSUPPORTED flag on the device instead of using exclude and include commands.
* 4071131 (4071605) A security vulnerability exists in the third-party component libxml2.
* 4072874 (4046786) FS becomes NOT MOUNTED after powerloss/poweron on all nodes.
* 4070186 (4041822) In an SRDF/Metro array setup, the last path is in the enabled state even after all the host and the array-side switch ports are disabled.
Patch ID: VRTSvxvm-7.4.2.2600
* 4047588 (4044072) I/Os fail for NVMe disks with 4K block size on the RHEL 8.4 kernel.
* 4047722 (4023390) Vxconfigd keeps dump core as invalid private region offset on a disk.
* 4048120 (4031452) vxesd core dump in esd_write_fc()
* 4048867 (4041515) VxVM volumes mentioned in /etc/fstab may not get mounted automatically at boot time.
* 4051701 (4031597) vradmind generates a core dump in __strncpy_sse2_unaligned.
* 4051702 (4019182) In case of a VxDMP configuration, an InfoScale server panics when applying a patch.
* 4051703 (4010794) Veritas Dynamic Multi-Pathing (DMP) caused system panic in a cluster while there were storage activities going on.
* 4051705 (4049371) DMP unable to display all WWN details when running "vxdmpadm getctlr all".
* 4051706 (4046007) disk private region gets corrupted after cluster name change in FSS environment.
* 4052119 (4045871) vxconfigd crashed at ddl_get_disk_given_path.
* 4055211 (4052191) Unexcepted scripts or commands got launched from vxvm-configure script because of incorrect comments format.
* 4056329 (4056156) VxVM Support for SLES15 Sp3
* 4059318 (4050050) VxVM volumes mentioned in /etc/fstab may not get mounted automatically at boot time.
Patch ID: VRTSvxvm-7.4.2.2200
* 4018173 (3852146) Shared DiskGroup(DG) fails to import when "-c" and "-o noreonline" options 
are
specified together
* 4018178 (3906534) After enabling DMP (Dynamic Multipathing) Native support, enable /boot to be
mounted on DMP device.
* 4039517 (4012763) IO hang may happen in VVR (Veritas Volume Replicator) configuration when SRL overflows for one rlink while another one rlink is in AUTOSYNC mode.
* 4046906 (3956607) vxdisk reclaim dumps core.
* 4046907 (4041001) In VxVM, system is getting hung when some nodes are rebooted.
* 4046908 (4038865) System panick at vxdmp module in IRQ stack.
* 4047588 (4044072) I/Os fail for NVMe disks with 4K block size on the RHEL 8.4 kernel.
* 4047590 (4045501) The VRTSvxvm and the VRTSaslapm packages fail to install on Centos 8.4 systems.
* 4047592 (3992040) bi_error - bi_status conversion map added for proper interpretation of errors at FS side.
* 4047595 (4009353) Post enabling dmp native support machine is going in to mantaince mode
* 4047695 (3911930) Provide a way to clear the PGR_FLAG_NOTSUPPORTED on the device instead of using
exclude/include commands
* 4047722 (4023390) Vxconfigd keeps dump core as invalid private region offset on a disk.
Patch ID: VRTSvxvm-7.4.2.1600
* 4013529 (4011691) High CPU consumption on the VVR secondary nodes because of high pending IO load.
* 4027262 (4027261) World writable permission not required for /var/VRTSvxvm/in.vxrsyncd.stderr and /var/adm/vx/vxdmpd.log
* 4033879 (3993050) vxdctl dumpmsg command gets stuck on large node cluster
* 4037288 (4034857) VxVM support on SLES 15 SP2
Patch ID: VRTSvxvm-7.4.2.1500
* 4018182 (4008664) System panic when signal vxlogger daemon that has ended.
* 4020207 (4018086) system hang was observed when RVG was in DCM resync with SmartMove as ON.
* 4020438 (4020046) DRL log plex gets detached unexpectedly.
* 4021238 (4008075) Observed with ASL changes for NVMe, This issue observed in reboot scenario. For every reboot machine was hitting panic And this was happening in loop.
* 4021240 (4010612) This issue observed for NVMe and ssd. where every disk has separate enclosure like nvme0, nvme1... so on. means every nvme/ssd disks names would be 
hostprefix_enclosurname0_disk0, hostprefix_enclosurname1_disk0....
* 4021346 (4010207) System panicked due to hard-lockup due to a spinlock not released properly during the vxstat collection.
* 4021366 (4008741) VxVM device files are not correctly labeled to prevent unauthorized modification - device_t
* 4023095 (4007920) Control auto snapshot deletion when cache obj is full.
Patch ID: VRTSvlic-4.01.742.300
* 4049416 (4049416) Migrate Telemetry Collector from Java to Python.
Patch ID: VRTSpython-3.7.4.35
* 4049693 (4049692) VRTSpython package has been updated with more python modules to support Licensing component.
Patch ID: VRTSvxfen-7.4.2.2500
* 4057309 (4057308) After an InfoScale upgrade, the updated values of vxfen tunables that are used when loading the corresponding module fail to persist.
* 4067460 (4004248) vxfend generates core sometimes during vxfen race in CPS based fencing configuration
Patch ID: VRTSvxfen-7.4.2.2100
* 4029493 (4029261) An entire InfoScale cluster may go down unexpectedly if one of its nodes receives a RECONFIG message during a shutdown or a restart operation.
* 4046423 (4043619) The OCPR function fails in case of SCSI3 fencing to customized mode.
* 4056996 (4056991) Veritas Infoscale Availability (VCS) does not support SUSE Linux Enterprise Server
15 Service Pack 3 (SLES 15 SP3).
Patch ID: VRTSvxfen-7.4.2.1600
* 4038116 (4038112) Veritas Infoscale Availability (VCS) does not support SUSE Linux Enterprise Server
15 Service Pack 2 (SLES 15 SP2).
Patch ID: VRTSvxfen-7.4.2.1300
* 4006982 (3988184) The vxfen process cannot complete due to incomplete vxfentab file.
* 4007375 (4000745) The VxFEN process fails to start due to late discovery of the VxFEN disk group.
* 4007376 (3996218) In a customized fencing mode, the 'vxfenconfig -c' command creates a new vxfend process even if VxFen is already configured.
* 4007677 (3970753) Freeing uninitialized/garbage memory causes panic in vxfen.
Patch ID: VRTSamf-7.4.2.2500
* 4066721 (4066719) Remove multiple AMF module support on Solaris 11.4
Patch ID: VRTSamf-7.4.2.2100
* 4046524 (4041596) A cluster node panics when the arguments passed to a process that is registered with AMF exceeds 8K characters.
* 4056995 (4056991) Veritas Infoscale Availability (VCS) does not support SUSE Linux Enterprise Server
15 Service Pack 3 (SLES 15 SP3).
Patch ID: VRTSamf-7.4.2.1600
* 4038115 (4038112) Veritas Infoscale Availability (VCS) does not support SUSE Linux Enterprise Server
15 Service Pack 2 (SLES 15 SP2).
Patch ID: VRTScps-7.4.2.2500
* 4054435 (4018218) Secure communication between a CP Server and a CP Client cannot be established using TLSv1.2
* 4067464 (4056666) The Error writing to database message may intermittently appear in syslogs on CP servers.
Patch ID: VRTSvcsag-7.4.2.2500
* 4061462 (4044567) The HostMonitor agent faults while logging the memory usage of a system.
Patch ID: VRTSllt-7.4.2.2500
* 4046420 (3989372) When the CPU load and memory consumption is high in a VMware environment, some nodes in an InfoScale cluster may get fenced out.
* 4057311 (4057310) After an InfoScale upgrade, the updated values of LLT tunables that are used when loading the corresponding modules fail to persist.
* 4067422 (4040261) During LLT configuration, if set-verbose is set to 1 in /etc/llttab, an lltconfig core dump is observed.
Patch ID: VRTSllt-7.4.2.2100
* 4039475 (4045607) Performance improvement of the UDP multiport feature of LLT on 1500 MTU-based networks.
* 4046200 (4046199) LLT configurations over UDP accept only ethernet interface names as link tag names.
* 4046420 (3989372) When the CPU load and memory consumption is high in a VMware environment, some nodes in an InfoScale cluster may get fenced out.
* 4056993 (4056991) Veritas Infoscale Availability (VCS) does not support SUSE Linux Enterprise Server
15 Service Pack 3 (SLES 15 SP3).
Patch ID: VRTSllt-7.4.2.1600
* 4030881 (4022792) A cluster node panics during an FSS I/O transfer over LLT.
* 4030882 (4029253) LLT may not reuse the buffer slots on which NAK is received from the earlier RDMA writes.
* 4038113 (4038112) Veritas Infoscale Availability (VCS) does not support SUSE Linux Enterprise Server
15 Service Pack 2 (SLES 15 SP2).
Patch ID: VRTSllt-7.4.2.1300
* 4019535 (4018581) The LLT module fails to start and the system log messages indicate missing IP address.
Patch ID: VRTSgab-7.4.2.2500
* 4057313 (4057312) After an InfoScale upgrade, the updated values of GAB tunables that are used when loading the corresponding modules fail to persist.
Patch ID: VRTSgab-7.4.2.2100
* 4046415 (4046413) After a node is added to or removed from a cluster, the GAB node count or the fencing quorum is not updated.
* 4046419 (4046418) The GAB module starts up even if LLT is not configured.
* 4056994 (4056991) Veritas Infoscale Availability (VCS) does not support SUSE Linux Enterprise Server
15 Service Pack 3 (SLES 15 SP3).
Patch ID: VRTSgab-7.4.2.1600
* 4038114 (4038112) Veritas Infoscale Availability (VCS) does not support SUSE Linux Enterprise Server
15 Service Pack 2 (SLES 15 SP2).
Patch ID: VRTSgab-7.4.2.1300
* 4013034 (4011683) The GAB module failed to start and the system log messages indicate failures with the mknod command.
Patch ID: VRTScavf-7.4.2.1400
* 4054857 (4035066) Improving logging capabilities in case of monitor and EP timeout events.


DETAILS OF INCIDENTS FIXED BY THE PATCH
---------------------------------------
This patch fixes the following incidents:

Patch ID: VRTSglm-7.4.2.2200

* 4056546 (Tracking ID: 4056801)

SYMPTOM:
The GLM module fails to load on SLES15 SP3.

DESCRIPTION:
This issue occurs due to changes in the SLES15 SP3 kernel.

RESOLUTION:
GLM module is updated to accommodate the changes in the kernel and load as expected on SLES15 SP3.

Patch ID: VRTSglm-7.4.2.1800

* 4038995 (Tracking ID: 4038994)

SYMPTOM:
GLM module failed to load on SLES15SP2

DESCRIPTION:
The SLES15SP2 is new release and it has some changes in kernel which caused GLM module failed to load
on it.

RESOLUTION:
Added code to support GLM on SLES15SP2.

Patch ID: VRTSperl-5.30.0.2

* 4074770 (Tracking ID: 4074769)

SYMPTOM:
Security vulnerability detected on VRTSperl 5.30.0.0 released with Infoscale 7.4.2.

DESCRIPTION:
Security vulnerability detected in the Net::Netmask module.

RESOLUTION:
Upgraded Net::Netmask module and re-created VRTSperl 5.30.0.2 version to fix the vulnerability .

Patch ID: VRTSdbed-7.4.2.2200

* 4058802 (Tracking ID: 4073842)

SYMPTOM:
Oracle 21c is not supported with previous releases

DESCRIPTION:
Oracle 21c support with SFAE

RESOLUTION:
Done changes to support Oracle 21c with SFAE

Patch ID: VRTSdbed-7.4.2.2100

* 4057566 (Tracking ID: 4057565)

SYMPTOM:
After the vxdbdctrl package installation, the following systemd warning message is logged: "SysV service '/etc/init.d/vxdbdctrl' lacks a native systemd unit file."

DESCRIPTION:
This message is logged because a native systemd unit file for the vxdbctrl service is missing from the installation package.

RESOLUTION:
The systemd unit file is now added to the package.

Patch ID: VRTSvcsea-7.4.2.2500

* 4064920 (Tracking ID: 4064917)

SYMPTOM:
Oracle agent fails to generate ora_api (which is used for Intentional Offline functionality of Oracle agent) using build_oraapi.sh script for Oracle 21c.

DESCRIPTION:
The build_oraapi.sh script could not connect to library named libdbtools21.a, as on the new Oracle 21c environment generic library is present i.e. '$ORACLE_HOME/rdbms/lib/libdbtools.a'.

RESOLUTION:
This script on Oracle 21c database environment will pick generic library and on older database environments it will pick Database version specific library.

Patch ID: VRTSvcsea-7.4.2.1100

* 4020528 (Tracking ID: 4001565)

SYMPTOM:
On Solaris 11.4, IMF fails to provide notifications when Oracle processes stop.

DESCRIPTION:
On Solaris 11.4, when Oracle processes stop, IMF provides notification to Oracle agent, but the monitor is not scheduled. As as result, agent fails intelligent monitoring.

RESOLUTION:
Oracle agent now provides notifications when Oracle processes stop.

Patch ID: VRTSdbac-7.4.2.2100

* 4056997 (Tracking ID: 4056991)

SYMPTOM:
Veritas Infoscale Availability (VCS) does not support SUSE Linux Enterprise Server
15 Service Pack 3 (SLES 15 SP3).

DESCRIPTION:
Veritas Infoscale Availability did not support SUSE Linux Enterprise Server
versions released after SLES 15 SP2.

RESOLUTION:
Veritas Infoscale Availability support for SUSE Linux Enterprise Server 15 SP3 is
now introduced.

Patch ID: VRTSdbac-7.4.2.1300

* 4038117 (Tracking ID: 4038112)

SYMPTOM:
Veritas Infoscale Availability (VCS) does not support SUSE Linux Enterprise Server
15 Service Pack 2 (SLES 15 SP2).

DESCRIPTION:
Veritas Infoscale Availability did not support SUSE Linux Enterprise Server
versions released after SLES 15 SP1.

RESOLUTION:
Veritas Infoscale Availability support for SUSE Linux Enterprise Server 15 SP2 is
now introduced

Patch ID: VRTSvcs-7.4.2.2500

* 4059899 (Tracking ID: 4059897)

SYMPTOM:
Executing the hacf -verify command generates core files if main.cf file contains non-ASCII character.

DESCRIPTION:
When main.cf contains a non-ASCII character, in some cases core files get generated for 'hacf -verify'. 
An example snippet of main.cf :
group test1_fail (
        SystemList = { iar730-05vm21 = 0, iar730-05vm23 = 1 }
        %AutoStartList = { iar730-05vm21, iar730-05vm23 }
        )

NULL Length of one buffer causes segmentation fault.

RESOLUTION:
NULL buffer is checked first before finding length.

* 4059901 (Tracking ID: 4059900)

SYMPTOM:
On a VCS node, hastop -local is unresponsive.

DESCRIPTION:
When a resource level online is initiated, VCS does not set any flags on a service group state to mark the group as STARTING. When a VCS stop is initiated on a system, VCS checks all the groups which are either ONLINE or in the process of coming ONLINE. Thus, even though the resources were being brought online, there was no such indication set on the group level. VCS does not mark the CVM group for offline.

The group that comes ONLINE after VCS entered a LEAVING state is missed for offlining causing VCS hastop -local to be unresponsive.

RESOLUTION:
Resource active state is checked to determine if a group is in the process of coming ONLINE.

* 4071007 (Tracking ID: 4070999)

SYMPTOM:
Processes registered under VCS control get killed after running the 'hastop -local -force' command.

DESCRIPTION:
Processes registered under VCS control get killed after running the 'hastop -local -force' command.

RESOLUTION:
'KillMode' value changed from 'control-group' to 'process'.

Patch ID: VRTSvcs-7.4.2.2100

* 4046515 (Tracking ID: 4040705)

SYMPTOM:
When a command exceeds 4096 characters, hacli hangs indefinitely.

DESCRIPTION:
Instead of returning the appropriate error message, hacli waits indefinitely for a reply from the VCS engine.

RESOLUTION:
Increased the limit of the hacli '-cmd' option to 7680 characters. Validations for the various hacli options are also now handled better. Thus, when the value of the '-cmd' option exceeds the new limit, hacli no longer hangs, but instead returns the appropriate proper error message.

* 4046520 (Tracking ID: 4040656)

SYMPTOM:
When the ENOMEM error occurs, HAD does not shut down gracefully.

DESCRIPTION:
When HAD encounters the ENOMEM error, it reattempts the operation a few times until it reaches a predefined maximum limit, and then it exits. The hashadow daemon restarts HAD with the '-restart' option. The failover service group in the cluster is not started automatically, because it appears that one of the cluster nodes is in the 'restarting' mode.

RESOLUTION:
HAD is enhanced to exit gracefully when it encounters the ENOMEM error, and the hashadow daemon is updated to restart HAD without the '-restart' option. This enhancement ensures that in such a scenario, the autostart of a failover service group is triggered as expected.

* 4046526 (Tracking ID: 4043700)

SYMPTOM:
In case of failover, parallel, or hybrid service groups, multiple PreOnline triggers can be executed on the same node or on different nodes in a cluster while an online operation is in already progress.

DESCRIPTION:
This issue occurs because the validation of online operations did not take the ongoing execution of PreOnline triggers into consideration. Thus, subsequent online operations are accepted while a PreOnline trigger is already being executed. Consequently, multiple PreOnline trigger instances are executed.

RESOLUTION:
A check for PreOnline triggers is added to the validation of ongoing online operations, and subsequent calls for online operations are rejected. Thus, the PreOnline trigger for failover groups is executed only once.

Patch ID: VRTSvcs-7.4.2.1600

* 4028658 (Tracking ID: 4026819)

SYMPTOM:
Non-root users of GuestGroup in a secure cluster cannot execute VCS commands like "hagrp -state".

DESCRIPTION:
When a non-root guest user runs a HAD CLI command, the command fails to execute and the following error is logged: "VCS ERROR V-16-1-10600 Cannot connect to VCS engine". This issue occurs when IPv6 is disabled.

RESOLUTION:
This hotfix updates the VCS module to run HAD CLI commands successfully even when IPv6 is disabled.

Patch ID: VRTSsfmh-7.4.2.601

* 4062783 (Tracking ID: 4062782)

SYMPTOM:
vxlist command does not give proper output and throw message like 'Cannot connect to vxconfigd on host'

DESCRIPTION:
On InfoScale server having VxVM version 7.4.1.3104 and VRTSsfmh version 7.4.2, you may see that vxlist does not work. In this case, manually upgrade VRTSsfmh package to 7.4.2.502

RESOLUTION:
New dclid plugin compatible with VxVM 7.4.1.3104 is present in VRTSsfmh package.

* 4062795 (Tracking ID: 4062794)

SYMPTOM:
VxVM services fails to start.

DESCRIPTION:
There was dependency between VIOM xprtld and VxVM boot service. This causes sometimes VxVM services to start properly on Linux platform.

RESOLUTION:
Removed dependency between xprtld and VXVM.

* 4071101 (Tracking ID: 4071100)

SYMPTOM:
systemd xprtld.service causes ordering cycles issue with autofs.

DESCRIPTION:
With AFTER dependency of autofs in the xprtld.service it causes ordering cycles where systemd will randomly delete a service caught up in the cycle.

RESOLUTION:
Removed dependency of autofs.service from xprtld.service

Patch ID: VRTSvxfs-7.4.2.2600

* 4015834 (Tracking ID: 3988752)

SYMPTOM:
Use ldi_strategy() routine instead of bdev_strategy() for IO's in solaris.

DESCRIPTION:
bdev_strategy() is deprecated from solaris code and was causing performance issues when used for IO's. Solaris has recommended to use LDI framework for all IO's.

RESOLUTION:
Code is modified to use ldi framework for all IO's in solaris.

* 4040612 (Tracking ID: 4033664)

SYMPTOM:
Multiple issues occur with hardlink replication using VFR.

DESCRIPTION:
Multiple different issues occur with hardlink replication using Veritas File Replicator (VFR).

RESOLUTION:
VFR is updated to fix issues with hardlink replication in the following cases:
1. Files with multiple links
2. Data inconsistency after hardlink file replication
3. Rename and move operations dumping core in multiple different scenarios
4. WORM feature support

* 4040618 (Tracking ID: 4040617)

SYMPTOM:
Veritas file replicator is not performing as per the expectation.

DESCRIPTION:
Veritas FIle replicator was having some bottlenecks at networking layer as well as data transfer level. This was causing additional throttling in the Replication.

RESOLUTION:
Performance optimisations done at multiple places to make use of available resources properly so that Veritas File replicator

* 4060549 (Tracking ID: 4047921)

SYMPTOM:
Replication job was getting into hung state because of the deadlock involving below threads :

Thread : 1  

#0  0x00007f160581854d in __lll_lock_wait () from /lib64/libpthread.so.0
#1  0x00007f1605813e9b in _L_lock_883 () from /lib64/libpthread.so.0
#2  0x00007f1605813d68 in pthread_mutex_lock () from /lib64/libpthread.so.0
#3  0x000000000043be1f in replnet_sess_bulk_free ()
#4  0x000000000043b1e3 in replnet_server_dropchan ()
#5  0x000000000043ca07 in replnet_client_connstate ()
#6  0x00000000004374e3 in replnet_conn_changestate ()
#7  0x0000000000437c18 in replnet_conn_evalpoll ()
#8  0x000000000044ac39 in vxev_loop ()
#9  0x0000000000405ab2 in main ()

Thread 2 :

#0  0x00007f1605815a35 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x000000000043902b in replnet_msgq_waitempty ()
#2  0x0000000000439082 in replnet_bulk_recv_func ()
#3  0x00007f1605811ea5 in start_thread () from /lib64/libpthread.so.0
#4  0x00007f1603ef29fd in clone () from /lib64/libc.so.6

DESCRIPTION:
When replication job is paused/resumed in a succession multiple times because of the race condition it may lead to a deadlock situation involving two threads.

RESOLUTION:
Fix the locking sequence and add additional holds on resources to avoid race leading to deadlock situation.

* 4060566 (Tracking ID: 4052449)

SYMPTOM:
Cluster goes in an 'unresponsive' mode while invalidating pages due to duplicate page entries in iowr structure.

DESCRIPTION:
While finding pages for invalidation of inodes, VxFS traverses radix tree by taking RCU lock and fills the IO structure with dirty/writeback pages that need to be invalidated in an array. This lock is efficient for read but does not protect the parallel creation/deletion of node. Hence, when VxFS finds page, consistency for the page in checked through radix_tree_exception()/radix_tree_deref_retry(). And if it fails, VxFS restarts the page finding from start offset. But VxFs does not reset the array index, leading to incorrect filling of IO structure's array which was causing  duplicate entries of pages. While trying to destroy these pages, VxFS takes page lock on each page. Because of duplicate entries, VxFS tries to take page lock couple of times on same page, leading to self-deadlock.

RESOLUTION:
Code is modified to reset the array index correctly in case of failure to find pages.

* 4060585 (Tracking ID: 4042925)

SYMPTOM:
Intermittent Performance issue on commands like df and ls.

DESCRIPTION:
Commands like "df" "ls" issue stat system call on node to calculate the statistics of the file system. In a CFS, when stat system call is issued, it compiles statistics from all nodes. When multiple df or ls are fired within specified time limit, vxfs is optimized. vxfs returns the cached statistics, instead of recalculating statistics from all nodes. If multiple such commands are fired in succession and one of the old caller of stat system call takes time, this optimization fails and VxFS recompiles statistics from all nodes. This can lead to bad performance of stat system call, leading to unresponsive situations for df, ls commands.

RESOLUTION:
Code is modified to protect last modified time of stat system call with a sleep lock.

* 4060805 (Tracking ID: 4042254)

SYMPTOM:
vxupgrade sets fullfsck flag in the filesystem if it is unable to upgrade the disk layout version because of ENOSPC.

DESCRIPTION:
If the filesystem is 100 % full and  its disk layout version is upgraded by using vxupgrade, then this utility starts the upgrade and later it fails with ENOSPC and ends up setting fullfsck flag in the filesystem.

RESOLUTION:
Code changes introduced which first calculate the required space to perform the disk layout upgrade. If the required space is not available, it fails the upgrade gracefully without setting fullfsck flag.

* 4061203 (Tracking ID: 4005620)

SYMPTOM:
Inode count maintained in the inode allocation unit (IAU) can be negative when an IAU is marked bad. An error such as the following is logged.

V-2-4: vx_mapbad - vx_inoauchk - /fs1 file system free inode bitmap in au 264 marked bad

Due to the negative inode count, errors like the following might be observed and processes might be stuck at inode allocation with a stack trace as shown.

V-2-14: vx_iget - inode table overflow

	vx_inoauchk 
	vx_inofindau 
	vx_findino 
	vx_ialloc 
	vx_dirmakeinode 
	vx_dircreate 
	vx_dircreate_tran 
	vx_pd_create 
	vx_create1_pd 
	vx_do_create 
	vx_create1 
	vx_create0 
	vx_create 
	vn_open 
	open

DESCRIPTION:
The inode count can be negative if somehow VxFS tries to allocate an inode from an IAU where the counter for regular file and directory inodes is zero. In such a situation, the inode allocation fails and the IAU map is marked bad. But the code tries to further reduce the already-zero counters, resulting in negative counts that can cause subsequent unresponsive situation.

RESOLUTION:
Code is modified to not reduce inode counters in vx_mapbad code path if the result is negative. A diagnostic message like the following flashes.
"vxfs: Error: Incorrect values of ias->ifree and Aus rifree detected."

* 4061527 (Tracking ID: 4054386)

SYMPTOM:
VxFS systemd service may show active status despite the module not being loaded.

DESCRIPTION:
If systemd service fails to load vxfs module, the service still shows status as active instead of failed.

RESOLUTION:
The script is modified to show the correct status in case of such failures.

Patch ID: VRTSvxfs-7.4.2.2400

* 4013420 (Tracking ID: 4013139)

SYMPTOM:
The abort operation on an ongoing online migration from the native file system to VxFS on RHEL 8.x systems.

DESCRIPTION:
The following error messages are logged when the abort operation fails:
umount: /mnt1/lost+found/srcfs: not mounted
UX:vxfs fsmigadm: ERROR: V-3-26835:  umount of source device: /dev/vx/dsk/testdg/vol1 failed, with error: 32

RESOLUTION:
The fsmigadm utility is updated to address the issue with the abort operation on an ongoing online migration.

* 4040238 (Tracking ID: 4035040)

SYMPTOM:
After replication job paused and resumed some of the fields got missed in stats command output and never shows missing fields on onward runs.

DESCRIPTION:
rs_start for the current stat initialized to the start time of the replication and default value of rs_start is zero.
Stat don't show some fields in-case rc_start is zero.

        if (rs->rs_start && dis_type == VX_DIS_CURRENT) {
                if (!rs->rs_done) {
                        diff = rs->rs_update - rs->rs_start;
                }
                else {
                        diff = rs->rs_done - rs->rs_start;
                }

                /*
                 * The unit of time is in seconds, hence
                 * assigning 1 if the amount of data
                 * was too small
                 */

                diff = diff ? diff : 1;
                rate = rs->rs_file_bytes_synced /
                        (diff - rs->rs_paused_duration);
                printf("\t\tTransfer Rate: %s/sec\n", fmt_bytes(h, rate));
        }

In replication we initialize the rs_start to zero and update with the start time but we don't save the stats to disk. That small window leave a case where
in-case, we pause the replication and start again we always see the rs_start to zero.

Now after initializing the rs_start we write to disk in the same function. In-case in resume case we found rs_start to zero, we again initialize the rs_start 
field to current replication start time.

RESOLUTION:
Write rs_start to disk and added a check in resume case to initialize rs_start value in-case found 0.

* 4040608 (Tracking ID: 4008616)

SYMPTOM:
fsck command got hung.

DESCRIPTION:
fsck got stuck due to deadlock when a thread which marked buffer aliased is waiting for itself for the reference drain, while
getting block code was called with NOBLOCK flag.

RESOLUTION:
honour NOBLOCK flag

* 4042686 (Tracking ID: 4042684)

SYMPTOM:
Command fails to resize the file.

DESCRIPTION:
There is a window where a parallel thread can clear IDELXWRI flag which it should not.

RESOLUTION:
setting the delayed extending write flag incase any parallel thread has cleared it.

* 4044184 (Tracking ID: 3993140)

SYMPTOM:
In every 60 seconds, compclock was lagging behind approximate 1.44 seconds from actual time elapsed.

DESCRIPTION:
In every 60 seconds, compclock was lagging behind approximate 1.44 seconds from actual time elapsed.

RESOLUTION:
Made adjustment to logic responsible for calculating and updating compclock timer.

* 4046265 (Tracking ID: 4037035)

SYMPTOM:
VxFS should have the ability to control the number of inactive processing threads.

DESCRIPTION:
VxFS may spawn a large number of worker threads that become inactive over time. As a result, heavy lock contention occurs during the removal of inactive threads on high-end servers.

RESOLUTION:
To avoid the contention, a new tunable, vx_ninact_proc_threads, is added. You can use vx_ninact_proc_threads to adjust the number of inactive processing threads based on your server configuration and workload.

* 4046266 (Tracking ID: 4043084)

SYMPTOM:
panic in vx_cbdnlc_lookup

DESCRIPTION:
Panic observed in the following stack trace:
vx_cbdnlc_lookup+000140 ()
vx_int_lookup+0002C0 ()
vx_do_lookup2+000328 ()
vx_do_lookup+0000E0 ()
vx_lookup+0000A0 ()
vnop_lookup+0001D4 (??, ??, ??, ??, ??, ??)
getFullPath+00022C (??, ??, ??, ??)
getPathComponents+0003E8 (??, ??, ??, ??, ??, ??, ??)
svcNameCheck+0002EC (??, ??, ??, ??, ??, ??, ??)
kopen+000180 (??, ??, ??)
syscall+00024C ()

RESOLUTION:
Code changes to handle memory pressure while changing FC connectivity

* 4046267 (Tracking ID: 4034910)

SYMPTOM:
Garbage values inside global list large_dirinfo.

DESCRIPTION:
Garbage values inside global list large_dirinfo, which will lead to fsck failure.

RESOLUTION:
Make access/updataion to global list large_dirinfo synchronous throughout the fsck binary, so that garbage values due to race condition can be avoided.

* 4046271 (Tracking ID: 3993822)

SYMPTOM:
running fsck on a file system core dumps

DESCRIPTION:
buffer was marked as busy without taking buffer lock while getting buffer from freelist in 1 thread and there was another thread 
that was accessing this buffer through its local variable

RESOLUTION:
marking buffer busy within the buffer lock while getting free buffer.

* 4046272 (Tracking ID: 4017104)

SYMPTOM:
Deleting a huge number of inodes can consume a lot of system resources during inactivations which cause hangs or even panic.

DESCRIPTION:
Delicache inactivations dumps all the inodes in its inventory, all at once for inactivation. This causes a surge in the resource consumptions due to which other processes can starve.

RESOLUTION:
Gradually process the inode inactivation.

* 4046829 (Tracking ID: 3993943)

SYMPTOM:
A core dump occurs and the fsck operation fails on a file system.

DESCRIPTION:
A segmentation fault occurs in get_dotdotlst().
The stack trace is as follows:
get_dotdotlst 
check_dotdot_tbl 
iproc_do_work
start_thread 
clone () 
A core dump follows and the corresponding fsck operation fails.

RESOLUTION:
The fsck utility is updated to handle the segmentation fault in get_dotdotlst().

* 4047568 (Tracking ID: 4046169)

SYMPTOM:
On RHEL8, while doing a directory move from one FS (ext4 or vxfs) to migration VxFS, the migration can fail and FS will be disable. In debug testing, the issue was caught by internal assert, with following stack trace.

panic
ted_call_demon
ted_assert
vx_msgprint
vx_mig_badfile
vx_mig_linux_removexattr_int
__vfs_removexattr
__vfs_removexattr_locked
vfs_removexattr
removexattr
path_removexattr
__x64_sys_removexattr
do_syscall_64

DESCRIPTION:
Due to different implementation of "mv" operation in RHEL8 (as compared to RHEL7), there is a removexattr call on the target FS - which in migration case will be migration VxFS. In this removexattr call, kernel asks "system.posix_acl_default" attribute to be removed from the directory to be moved. But since the directory is not present on the target side yet (and hence no extended attributes for the directory), the code returns ENODATA. When code in vx_mig_linux_removexattr_int() encounter this error, it disables the FS and in debug pkg calls assert.

RESOLUTION:
The fix is to ignore ENODATA error and not assert or disable the FS.

* 4049091 (Tracking ID: 4035057)

SYMPTOM:
On RHEL8, IOs done on FS, while other FS to VxFS migration is in progress can cause panic, with following stack trace.
 machine_kexec
 __crash_kexec
 crash_kexec
 oops_end
 no_context
 do_page_fault
 page_fault
 [exception RIP: memcpy+18]
 _copy_to_iter
 copy_page_to_iter
 generic_file_buffered_read
 new_sync_read
 vfs_read
 kernel_read
 vx_mig_read
 vfs_read
 ksys_read
 do_syscall_64

DESCRIPTION:
- As part of RHEL8 support changes, vfs_read, vfs_write calls were replaced with kernel_read, kernel_write as the vfs_ calls are no longer exported. The kernel_read, kernel_write calls internally set the memory segment of the thread to KERNEL_DS and expects the buffer passed to have been allocated in kernel space.
- In migration code, if the read/write operation cannot be completed using target FS (VxFS), then the IO is redirected to source FS. And in doing so, the code passes the same buffer - which is a user buffer to kernel call. This worked well with vfs_read, vfs_write calls. But is does not work with kernel_read, kernel_write calls, causing a panic.

RESOLUTION:
- Fix is to use vfs_iter_read, vfs_iter_write calls, which work with user buffer. To use these methods the user buffer needs to passed as part of struct iovec.iov_base

* 4049097 (Tracking ID: 4049096)

SYMPTOM:
Tar command errors out with 1 throwing warnings.

DESCRIPTION:
This is happening due to dalloc which is changing the ctime of the file after allocating the extents `(worklist thread)->vx_dalloc_flush -> vx_dalloc_off` in between the 2 fsstat calls in tar.

RESOLUTION:
Avoiding changing ctime while allocating delayed extents in background.

* 4056542 (Tracking ID: 4056797)

SYMPTOM:
The VxFS module fails to load on SLES15 SP3.

DESCRIPTION:
This issue occurs due to changes in the SLES15 SP3 kernel.

RESOLUTION:
VxFS module is updated to accommodate the changes in the kernel and load as expected on SLES15 SP3.

Patch ID: VRTSvxfs-7.4.2.1800

* 4022933 (Tracking ID: 4022983)

SYMPTOM:
VFR promote operation might failed during failover of job to new replication source.

DESCRIPTION:
As part of failover to new replication source, the file system is being unmounted. If there is a process holding on mountpoint then Veritas Cluster server try to offline the mountpoint. After some retires, it will kill all the process holding the mount point. A promote process which is updating job configuration on the same mount might exists also killed. Due to which promote opertion will fail.

RESOLUTION:
Added code to open files using the close-on-exec flag, which will ensure file descriptor holding on job configuration file will be closed automatically when promote is executed.

* 4023026 (Tracking ID: 4023702)

SYMPTOM:
If job is created with 'metadata only' replication, named attributes are not getting
replicated to target side.

DESCRIPTION:
The job is created with 'metadata only' replication. So we replicate only metadata.
named attribute on a file is a type of metadata too.
But VXFS stores named attribute information (i.e the value field) in a regular file.
in case of incremental sync, we are not replicating the data of this regular file.
We need to handle this case.

RESOLUTION:
For named attributes record, we need to ignore 'metadata only' condition.

* 4023856 (Tracking ID: 4008520)

SYMPTOM:
CFS hang in vx_searchau().

DESCRIPTION:
As part of SMAP transaction changes, allocator changed its logic to call mdele tryhold always when getting the emap for a particular EAU, and it passes nogetdele as 1 to mdele_tryhold, which suggests that mdele_tryhold should not ask for delegation when detecting a free EAU without delegation, so in our case, allocator finds such an EAU in device summary tree but without delegation,  and it keeps retrying but without asking for delegation, hence the forever.

RESOLUTION:
Rectify the culprit EAU summary and its parent in case lost delegation EAU is found.

* 4023963 (Tracking ID: 4022710)

SYMPTOM:
This can happen during first time replication(full-sync) start from SOURCE to TARGET. Replication could fail on target and generate repld core. 

Backtrace look like below 
#0  0x000000000041074a in repl_shash_insert ()
#1  0x0000000000406341 in repl_set_seq_triplet ()
#2  0x000000000040a192 in rep_write_attr_async ()
#3  0x000000000041c216 in __job_thread ()
#4  0x00007f8f7145dea5 in start_thread () from /lib64/libpthread.so.0
#5  0x00007f8f6fb3e8dd in clone () from /lib64/libc.so.6

DESCRIPTION:
This is a race where we send the replication PASS completion message from TARGET to SOURCE before actually completion the current PASS on the target during full-sync.
This can happen with single replication job running.

RESOLUTION:
Fix the code where we wait for previous pass to finish and then only send the PASS completion message from TARGET to SOURCE.

* 4024219 (Tracking ID: 4026702)

SYMPTOM:
If ACL entries on a file are deleted (not the default ones) and VFR sync is performed,
deleted ACL entries are still found present on target side.

DESCRIPTION:
In VFR, ACL replication is done by comparing number entries present in 
base & current checkpoint. If no. of entries present in current ckpt is equal to default
ACL count, then those ACLs are not replicated.

RESOLUTION:
Perform actual comparison of ACL entries, while replicating them.

* 4024275 (Tracking ID: 4009728)

SYMPTOM:
System can panic, while trying to create a hard link.

DESCRIPTION:
There is a buffer overflow while trying to remove an indirect attribute inode. Indirect attribute removal happens while trying to add the hardlink as well, to over the buffer with the updated inode entry. This buffer overflow can also cause memory corruption.

RESOLUTION:
The code is modified to move to check the length of the buffer to avoid the overflow.

* 4027627 (Tracking ID: 4027629)

SYMPTOM:
fsppadm analyze shows incorrect stats

DESCRIPTION:
Stats output of analyze and enforce were not same. Analyze was accounting files in lost+found also which enforce was skipping. Bytes moved for analyze was considering block size where for enforce it was actual file size for cloud device. Total bytes moved was in KB if the bytes moved were less than 1KB it shows 0 in output

RESOLUTION:
1. Stats output of analyze and enforce will now be in decimal
2. For analyze for cloud device bytes moved will be actual bytes and not the block size
3. Skip files in lost+found for analyze when relocating to cloud tier

* 4038564 (Tracking ID: 4036018)

SYMPTOM:
VxFS module failed to load on SLES15SP2

DESCRIPTION:
The SLES15SP2 is new release and it has some changes in kernel which caused VxFS module failed to load
on it.

RESOLUTION:
Added code to support VxFS on SLES15SP2.

Patch ID: VRTSveki-7.4.2.2600

* 4057596 (Tracking ID: 4055072)

SYMPTOM:
Upgrading VRTSveki package using yum reports following error as "Starting veki /etc/vx/veki: line 51: [: too many arguments"

DESCRIPTION:
While upgrading VRTSveki package, presence of multiple module directories might result in upgrade script printing error message.

RESOLUTION:
Code is modified to check for specific module directory related to current kernel version in VRTSveki upgrade script.

Patch ID: VRTSveki-7.4.2.1900

* 4055071 (Tracking ID: 4055072)

SYMPTOM:
Upgrading VRTSveki package using yum reports following error as "Starting veki /etc/vx/veki: line 51: [: too many arguments"

DESCRIPTION:
While upgrading VRTSveki package, presence of multiple module directories might result in upgrade script printing error message.

RESOLUTION:
Code is modified to check for specific module directory related to current kernel version in VRTSveki upgrade script.

* 4056551 (Tracking ID: 4056808)

SYMPTOM:
The VEKI module fails to load on SLES15 SP3.

DESCRIPTION:
This issue occurs due to changes in the SLES15 SP3 kernel.

RESOLUTION:
VEKI module is updated to accommodate the changes in the kernel and load as expected on SLES15SP3.

Patch ID: VRTSveki-7.4.2.1800

* 4039063 (Tracking ID: 4039061)

SYMPTOM:
Veki failed to load on SLES15SP2

DESCRIPTION:
The SLES15SP2 is new release and it has some changes in kernel which caused Veki failed to load
on it.

RESOLUTION:
Added code to support Veki on SLES15SP2.

Patch ID: VRTSfsadv-7.4.2.2600

* 4070366 (Tracking ID: 4070367)

SYMPTOM:
After Upgrade "/var/VRTS/fsadv" directory is getting deleted.

DESCRIPTION:
"/var/VRTS/fsadv" directory is required to keep the logs which is getting deleted after we are upgrading VRTSfsadv package.

RESOLUTION:
Made necessary code changes to fix the issue.

* 4071090 (Tracking ID: 4040281)

SYMPTOM:
Security vulnerabilities exist in the OpenSSL, Xpat, and Sqlite third-party components used by VxFS.

DESCRIPTION:
VxFS uses the OpenSSL, Xpat, and Sqlite third-party components in which some security vulnerability exist.

RESOLUTION:
VxFS is updated to use newer versions of these third-party components in which the security vulnerabilities have been addressed.

Patch ID: VRTSfsadv-7.4.2.2400

* 4057399 (Tracking ID: 4057644)

SYMPTOM:
Getting a warning in the dmesg i.e. SysV service '/etc/init.d/fsdedupschd' lacks a native systemd unit file.

DESCRIPTION:
During the start of fsdedupschd service with init we are getting the waring as the init.d file will soon get depricated

RESOLUTION:
Have code changes to make fsdedupschd systemd compatible.

Patch ID: VRTSgms-7.4.2.2600

* 4057424 (Tracking ID: 4057176)

SYMPTOM:
Rebooting the system results into emergency mode.

DESCRIPTION:
Module dependency files get corrupted due to parallel invocation of depmod.

RESOLUTION:
Serialized the invocation of depmod through file lock.

* 4061646 (Tracking ID: 4061644)

SYMPTOM:
GMS failed to start after the kernel upgrade with the following error as
"modprobe FATAL Module vxgms not found in directory /lib/modules/>"

DESCRIPTION:
Due to a race GMS module (vxgms.ko) is not copied to the latest kernel location inside /lib/module directory during reboot.

RESOLUTION:
Added code to copy it to the directory.

Patch ID: VRTSgms-7.4.2.1900

* 4056547 (Tracking ID: 4056803)

SYMPTOM:
The GMS module fails to load on SLES15 SP3.

DESCRIPTION:
This issue occurs due to changes in the SLES15 SP3 kernel.

RESOLUTION:
GMS module is updated to accommodate the changes in the kernel and load as expected on SLES15 SP3.

* 4057175 (Tracking ID: 4057176)

SYMPTOM:
Rebooting the system results into emergency mode.

DESCRIPTION:
Module dependency files get corrupted due to parallel invocation of depmod.

RESOLUTION:
Serialized the invocation of depmod through file lock.

Patch ID: VRTSgms-7.4.2.1800

* 4038993 (Tracking ID: 4038992)

SYMPTOM:
GMS module failed to load on SLES15SP2

DESCRIPTION:
The SLES15SP2 is new release and it has some changes in kernel which caused GMS module failed to load
on it.

RESOLUTION:
Added code to support GMS on SLES15SP2.

Patch ID: VRTSodm-7.4.2.2600

* 4057429 (Tracking ID: 4056673)

SYMPTOM:
Rebooting the system results into emergency mode.

DESCRIPTION:
Module dependency files get corrupted due to parallel invocation of depmod.

RESOLUTION:
Serialized the invocation of depmod through file lock. Corrected vxgms dependency in odm service file.

* 4060584 (Tracking ID: 3868609)

SYMPTOM:
While applying Oracle redo logs, a significant increase is observed in the CPU usage by the vxfs thread.

DESCRIPTION:
To avoid memory deadlocks and to track exiting threads with outstanding ODM requests, the kernels memory management was analysed. While the Oracle threads are being rescheduled, they hold the mmap_sem. The FDD threads keep waiting for mmap_sem to be released, which causes the contention and the high CPU usage.

RESOLUTION:
The bouncing of the spinlock between the CPUs is removed to reduce the CPU spike.

Patch ID: VRTSodm-7.4.2.2400

* 4056545 (Tracking ID: 4056799)

SYMPTOM:
The ODM module fails to load on SLES15 SP3.

DESCRIPTION:
This issue occurs due to changes in the SLES15 SP3 kernel.

RESOLUTION:
ODM module is updated to accommodate the changes in the kernel and load as expected on SLES15 SP3.

* 4056672 (Tracking ID: 4056673)

SYMPTOM:
Rebooting the system results into emergency mode.

DESCRIPTION:
Module dependency files get corrupted due to parallel invocation of depmod.

RESOLUTION:
Serialized the invocation of depmod through file lock. Corrected vxgms dependency in odm service file.

Patch ID: VRTSodm-7.4.2.1800

* 4038975 (Tracking ID: 4036034)

SYMPTOM:
ODM module failed to load on SLES15SP2

DESCRIPTION:
The SLES15SP2 is new release and it has some changes in kernel which caused ODM module failed to load
on it.

RESOLUTION:
Added code to support ODM on SLES15SP2.

Patch ID: VRTSvxvm-7.4.2.3200

* 4011971 (Tracking ID: 3991668)

SYMPTOM:
In a VVR configuration with secondary logging enabled, data inconsistency is reported after the "No IBC message arrived" error is encountered.

DESCRIPTION:
It might happen that the VVR secondary node handles updates with larger sequence IDs before the In-Band Control (IBC) update arrives. In this case, VVR drops the IBC update. Due to the updates with the larger sequence IDs than the one for the IBC update, data writes cannot be started, and they get queued. Data loss may occur after the VVR secondary receives an atomic commit and frees the queue. If this situation occurs, the "vradmin verifydata" command reports data inconsistency.

RESOLUTION:
VVR is modified to trigger updates as they are received in order to start data volume writes.

* 4013169 (Tracking ID: 4011691)

SYMPTOM:
Observed high CPU consumption on the VVR secondary nodes because of high pending IO load.

DESCRIPTION:
High replication related IO load on the VVR secondary and the requirement of maintaining write order fidelity with limited memory pools created  contention. This resulted in multiple VxVM kernel threads contending for shared resources and there by increasing the CPU consumption.

RESOLUTION:
Limited the way in which VVR consumes its resources so that a high pending IO load would not result into high CPU consumption.

* 4037288 (Tracking ID: 4034857)

SYMPTOM:
Current load of Vxvm modules were failing on SLES15 SP2(Kernel - 5.3.18-22.2-default).

DESCRIPTION:
With new kernel (5.3.18-22.2-default) below mentioned functions were depricated -
1. gettimeofday() 
2.struct timeval
3. bio_segments()
4. iov_for_each()
5.req filed in struct next_rq
Also, there was susceptible Data corruption with big size IO(>1M) processed by Linux kernel IO splitting.

RESOLUTION:
Code changes are mainly to support kernel 5.3.18 and to provide support for deprecated functions. 
Remove dependency on req->next_rq field in blk-mq code
And, changes related to bypassing the Linux kernel IO split functions, which seems redundant for VxVM IO processing.

* 4054311 (Tracking ID: 4040701)

SYMPTOM:
Below warnings are observed while installing the VXVM package.
WARNING: libhbalinux/libhbaapi is not installed. vxesd will not capture SNIA HBA API library events.
mv: '/var/adm/vx/cmdlog' and '/var/log/vx/cmdlog' are the same file
mv: '/var/adm/vx/cmdlog.1' and '/var/log/vx/cmdlog.1' are the same file
mv: '/var/adm/vx/cmdlog.2' and '/var/log/vx/cmdlog.2' are the same file
mv: '/var/adm/vx/cmdlog.3' and '/var/log/vx/cmdlog.3' are the same file
mv: '/var/adm/vx/cmdlog.4' and '/var/log/vx/cmdlog.4' are the same file
mv: '/var/adm/vx/ddl.log' and '/var/log/vx/ddl.log' are the same file
mv: '/var/adm/vx/ddl.log.0' and '/var/log/vx/ddl.log.0' are the same file
mv: '/var/adm/vx/ddl.log.1' and '/var/log/vx/ddl.log.1' are the same file
mv: '/var/adm/vx/ddl.log.10' and '/var/log/vx/ddl.log.10' are the same file
mv: '/var/adm/vx/ddl.log.11' and '/var/log/vx/ddl.log.11' are the same file

DESCRIPTION:
Some warnings are observed while installing vxvm package.

RESOLUTION:
Appropriate code changes are done to avoid the warnings.

* 4056919 (Tracking ID: 4056917)

SYMPTOM:
In Flexible Storage Sharing (FSS) environments, disk group import operation with few disks missing leads to data corruption.

DESCRIPTION:
In FSS environments, import of disk group with missing disks is not allowed. If disk with highest updated configuration information is not present during import, the import operation fired was leading incorrectly incrementing the config TID on remaining disks before failing the operation. When missing disk(s) with latest configuration came back, import was successful. But because of earlier failed transaction, import operation incorrectly choose wrong configuration to import the diskgroup leading to data corruption.

RESOLUTION:
Code logic in disk group import operation is modified to ensure failed/missing disks check happens early before attempting perform any on-disk update as part of import.

* 4058873 (Tracking ID: 4057526)

SYMPTOM:
Whenever vxnm-vxnetd is loaded, it reports "Cannot touch '/var/lock/subsys/vxnm-vxnetd': No such file or directory" in /var/log/messages.

DESCRIPTION:
New systemd update removed the support for "/var/lock/subsys/" directory. Thus, whenever vxnm-vxnetd is loaded on the systems supporting systemd, it 
reports "cannot touch '/var/lock/subsys/vxnm-vxnetd': No such file or directory"

RESOLUTION:
Added a check to validate if the /var/lock/subsys/ directory is supported in vxnm-vxnetd.sh

* 4060839 (Tracking ID: 3975667)

SYMPTOM:
NMI watchdog: BUG: soft lockup

DESCRIPTION:
When flow control on ioshipping channel is set there is window in code where vol_ioship_sender thread can go in tight loop.
This causes softlockup

RESOLUTION:
Relinquish CPU to schedule other process. vol_ioship_sender() thread will restart after some delay.

* 4060962 (Tracking ID: 3915202)

SYMPTOM:
vxconfigd hang in vxconfigd -k -r reset

DESCRIPTION:
vxconfigd hang is observed since all the file descriptors to the process have been utilized because of fd leak.
This issue was not integrated hence facing the issue.

RESOLUTION:
Appropriate code changes are done to handle scenario of the fd leak.

* 4060966 (Tracking ID: 3959716)

SYMPTOM:
System may panic with sync replication with VVR configuration, when VVR RVG is in DCM mode, with following panic stack:
volsync_wait [vxio]
voliod_iohandle [vxio]
volted_getpinfo [vxio]
voliod_loop [vxio]
voliod_kiohandle [vxio]
kthread

DESCRIPTION:
With sync replication, if ACK for data message is delayed from the secondary site, the 
primary site might incorrectly free the message from the waiting queue at primary site.
Due to incorrect handling of the message, a system panic may happen.

RESOLUTION:
Required code changes are done to resolve the panic issue.

* 4061004 (Tracking ID: 3993242)

SYMPTOM:
vxsnap prepare on vset might throw error : "VxVM vxsnap ERROR V-5-1-19171 Cannot perform prepare operation on cloud 
volume"

DESCRIPTION:
There were  some wrong volume-records entries being fetched for VSET and due to which required validations were failing and triggering the issue .

RESOLUTION:
Code changes have been done to resolve the issue .

* 4061036 (Tracking ID: 4031064)

SYMPTOM:
During master switch with replication in progress, cluster wide hang is seen on VVR secondary.

DESCRIPTION:
With application running on primary, and replication setup between VVR primary & secondary, when master switch operation is attempted on secondary, it gets hung permanently.

RESOLUTION:
Appropriate code changes are done to handle scenario of master switch operation and replication data on secondary.

* 4061055 (Tracking ID: 3999073)

SYMPTOM:
Data corruption occurred when the fast mirror resync (FMR) was enabled and the failed plex of striped-mirror layout was attached.

DESCRIPTION:
To determine and recover the regions of volumes using contents of detach, a plex attach operation with FMR tracking has been enabled.

For the given volume region, the DCO region size being higher than the stripe-unit of volume, the code logic in plex attached code path was incorrectly skipping the bits in detach maps. Thus, some of the regions (offset-len) of volume did not sync with the attached plex leading to inconsistent mirror contents.

RESOLUTION:
To resolve the data corruption issue, the code has been modified to consider all the bits for given region (offset-len) in plex attached code.

* 4061057 (Tracking ID: 3931583)

SYMPTOM:
Node may panic while uninstalling or upgrading the VxVM package or during reboot.

DESCRIPTION:
Due to a race condition in Volume Manager (VxVM), IO may be queued for processing while the vxio module is being unloaded. This results in VxVM acquiring and accessing a lock which is currently being freed and it may panic the system with the following backtrace:

 #0 [ffff88203da089f0] machine_kexec at ffffffff8105d87b
 #1 [ffff88203da08a50] __crash_kexec at ffffffff811086b2
 #2 [ffff88203da08b20] panic at ffffffff816a8665
 #3 [ffff88203da08ba0] nmi_panic at ffffffff8108ab2f
 #4 [ffff88203da08bb0] watchdog_overflow_callback at ffffffff81133885
 #5 [ffff88203da08bc8] __perf_event_overflow at ffffffff811727d7
 #6 [ffff88203da08c00] perf_event_overflow at ffffffff8117b424
 #7 [ffff88203da08c10] intel_pmu_handle_irq at ffffffff8100a078
 #8 [ffff88203da08e38] perf_event_nmi_handler at ffffffff816b7031
 #9 [ffff88203da08e58] nmi_handle at ffffffff816b88ec
#10 [ffff88203da08eb0] do_nmi at ffffffff816b8b1d
#11 [ffff88203da08ef0] end_repeat_nmi at ffffffff816b7d79
 [exception RIP: _raw_spin_unlock_irqrestore+21]
 RIP: ffffffff816b6575 RSP: ffff88203da03d98 RFLAGS: 00000283
 RAX: 0000000000000283 RBX: ffff882013f63000 RCX: 0000000000000080
 RDX: 0000000000000001 RSI: 0000000000000283 RDI: 0000000000000283
 RBP: ffff88203da03d98 R8: 00000000005d1cec R9: ffff8810e8ec0000
 R10: 0000000000000002 R11: ffff88203da03da8 R12: ffff88103af95560
 R13: ffff882013f630c8 R14: 0000000000000001 R15: 0000000000000ca5
 ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018
--- <NMI exception stack> ---
#12 [ffff88203da03d98] _raw_spin_unlock_irqrestore at ffffffff816b6575
#13 [ffff88203da03da0] voliod_qsio at ffffffffc0fd14c3 [vxio]
#14 [ffff88203da03dd0] vol_sample_timeout at ffffffffc101d8df [vxio]
#15 [ffff88203da03df0] __voluntimeout at ffffffffc0fd34be [vxio]
#16 [ffff88203da03e18] voltimercallback at ffffffffc0fd3568 [vxio]
...
...

RESOLUTION:
Code changes made to handle the race condition and prevent the access of resources that are being freed.

* 4061298 (Tracking ID: 3982103)

SYMPTOM:
When the memory available is low in the system , I/O hang is seen.

DESCRIPTION:
In low memory situation, the memory allocated to some VVR IOs was NOT getting released properly due to which the new application IO
could NOT be served as the VVR memory pool gets fully utilized. This was resulting in IO hang type of situation.

RESOLUTION:
Code changes are done to properly release the memory in the low memory situation.

* 4061317 (Tracking ID: 3925277)

SYMPTOM:
vxdisk resize corrupts disk public region and causes file system mount fail.

DESCRIPTION:
While resizing single path disk with GPT label, update policy data according to the changes made to da/dmrec during two transactions of resize is missed, hence the private region IOs are sent to the old private region device which is on partition 3. This may make the private region data written to public region and cause corruption.

RESOLUTION:
Code changes have been made to fix  the problem.

* 4061509 (Tracking ID: 4043337)

SYMPTOM:
rp_rv.log file uses space for logging.

DESCRIPTION:
rp_rv log files needs to be removed and logger file should have 16 mb rotational log files.

RESOLUTION:
The code changes are implemented to disabel logging for rp_rv.log files

* 4062461 (Tracking ID: 4066785)

SYMPTOM:
When replicated disks are in SPLIT mode, importing its diskgroup failed with "Device is a hardware mirror".

DESCRIPTION:
When replicated disks are in SPLIT mode, which are r/w, importing its diskgroup failed with "Device is a hardware mirror". Third party doesn't expose disk 
attribute to show when it's in SPLIT mode. Now DMP refers to its REPLICATED status to judge if diskgroup import is allowed or not. `-o usereplicatedev=on/off` 
is enhanced to archive it.

RESOLUTION:
The code is enhanced to allow diskgroup import when replicated disks are in SPLIT mode.

* 4062577 (Tracking ID: 4062576)

SYMPTOM:
When hastop -local is used to stop the cluster, dg deport command hangs. Below stack trace is observed in system logs :

#0 [ffffa53683bf7b30] __schedule at ffffffffa834a38d
 #1 [ffffa53683bf7bc0] schedule at ffffffffa834a868
 #2 [ffffa53683bf7bd0] blk_mq_freeze_queue_wait at ffffffffa7e4d4e6
 #3 [ffffa53683bf7c18] blk_cleanup_queue at ffffffffa7e433b8
 #4 [ffffa53683bf7c30] vxvm_put_gendisk at ffffffffc3450c6b [vxio]   
 #5 [ffffa53683bf7c50] volsys_unset_device at ffffffffc3450e9d [vxio]
 #6 [ffffa53683bf7c60] vol_rmgroup_devices at ffffffffc3491a6b [vxio]
 #7 [ffffa53683bf7c98] voldg_delete at ffffffffc34932fc [vxio]
 #8 [ffffa53683bf7cd8] vol_delete_group at ffffffffc3494d0d [vxio]
 #9 [ffffa53683bf7d18] volconfig_ioctl at ffffffffc3555b8e [vxio]
#10 [ffffa53683bf7d90] volsioctl_real at ffffffffc355fc8a [vxio]
#11 [ffffa53683bf7e60] vols_ioctl at ffffffffc124542d [vxspec]
#12 [ffffa53683bf7e78] vols_unlocked_ioctl at ffffffffc124547d [vxspec]
#13 [ffffa53683bf7e80] do_vfs_ioctl at ffffffffa7d2deb4
#14 [ffffa53683bf7ef8] ksys_ioctl at ffffffffa7d2e4f0
#15 [ffffa53683bf7f30] __x64_sys_ioctl at ffffffffa7d2e536

DESCRIPTION:
This issue is seen due to some updation from kernel side w.r.t to handling request queue.Existing VxVM code set the request handling area (make_request_fn) as vxvm_gen_strategy, this functionality is getting impacted.

RESOLUTION:
Code changes are added to handle the request queues using blk_mq_init_allocated_queue.

* 4062746 (Tracking ID: 3992053)

SYMPTOM:
Data corruption may happen with layered volumes due to some data not re-synced while attaching a plex. This is due to 
inconsistent data across the plexes after attaching a plex in layered volumes.

DESCRIPTION:
When a plex is detached in a layered volume, the regions which are dirty/modified are tracked in DCO (Data change object) map.
When the plex is attached back, the data corresponding to these dirty regions is re-synced to the plex being attached.
There was a defect in the code due to which the some particular regions were NOT re-synced when a plex is attached.
This issue only happens only when the offset of the sub-volume is NOT aligned with the region size of DCO (Data change object) volume.

RESOLUTION:
The code defect is fixed to correctly copy the data for dirty regions when the sub-volume offset is NOT aligned with the DCO region size.

* 4062747 (Tracking ID: 3943707)

SYMPTOM:
vxconfigd reconfig hang when joing a cluster with below stack:
volsync_wait [vxio]
_vol_syncwait [vxio]
voldco_await_shared_tocflush [vxio]
volcvm_ktrans_fmr_cleanup [vxio]
vol_ktrans_commit [vxio]
volconfig_ioctl [vxio]
volsioctl_real [vxio]
vols_ioctl [vxspec]
vols_unlocked_ioctl [vxspec]
vfs_ioctl  
do_vfs_ioctl

DESCRIPTION:
There is a race condition that caused the current seqno on tocsio does not get incremented on one of the nodes. While master and other slaves move to next stage with higher seqno, this slave drops the DISTRIBUTE message. The messages is retried from master and slave keeps on dropping, leading to hang.

RESOLUTION:
Code changes have been made to avoid the race condition.

* 4062751 (Tracking ID: 3989185)

SYMPTOM:
In a Veritas Volume Manager(VVR) environment vxrecover command can hang.

DESCRIPTION:
When vxrecover is triggered after storage failure it is possible that the vxrecover operation may hang.
This is because vxrecover does the RVG recovery. As part of this recovery dummy updates are written on SRL.
Due to a bug in the code these updated were written incorrectly on the SRL which led the flush operation from SRL to data volume hang.

RESOLUTION:
Code changes are done appropriately so that the dummy updates are written  correctly to the SRL.

* 4062755 (Tracking ID: 3978453)

SYMPTOM:
Reconfig hang during master takeover with below stack:
volsync_wait+0xa7/0xf0 [vxio]
volsiowait+0xcb/0x110 [vxio]
vol_commit_iolock_objects+0xd3/0x270 [vxio]
vol_ktrans_commit+0x5d3/0x8f0 [vxio]
volconfig_ioctl+0x6ba/0x970 [vxio]
volsioctl_real+0x436/0x510 [vxio]
vols_ioctl+0x62/0xb0 [vxspec]
vols_unlocked_ioctl+0x21/0x30 [vxspec]
do_vfs_ioctl+0x3a0/0x5a0

DESCRIPTION:
There is a hang in dcotoc protocol on slave and that is causing couple of slave nodes not respond with LEAVE_DONE to master, hence the issue.

RESOLUTION:
Code changes have been made to add handling of transaction overlapping with a shared toc update. Passing toc update sio flag from old to new object during transaction, to resume recovery if required.

* 4063374 (Tracking ID: 4005121)

SYMPTOM:
Application IOs appear hung or progress slowly until SRL to DCM flush finished.

DESCRIPTION:
When VVR SRL gets full DCM protection was triggered and application IO appear hung until SRL to DCM flush finished.

RESOLUTION:
Added fix that avoided duplicate DCM tracking through vol_rvdcm_log_update(), which reduced the IOPS drop comparatively.

* 4064523 (Tracking ID: 4049082)

SYMPTOM:
I/O read error is displayed when remote FSS node rebooting.

DESCRIPTION:
When rebooting remote FSS node, I/O read requests to a mirror volume that is scheduled on the remote disk from the FSS node should be redirected to the remaining plex. However, current vxvm does not handle this correctly. The retrying I/O requests could still be sent to the offline remote disk, which cause to final I/O read failure.

RESOLUTION:
Code changes have been done to schedule the retrying read request on the remaining plex.

* 4066930 (Tracking ID: 3951527)

SYMPTOM:
Data loss issue is seen because of incorrect version check handling done as a part of SRL 4k update alignment changes in 7.4 release.

DESCRIPTION:
On primary, rv_target_rlink field always is set to NULL which internally skips checking the 4k version  in VOL_RU_INIT_UPDATE macro. It causes SRL writes to be written in a 4k aligned manner even though remote rvg version is <= 7.3.1. This resulted in data loss.

RESOLUTION:
Changes are done to use rv_replicas rather than rv_target_rlink to check the version appropriately for all sites and not write SRL IO's in 4k aligned manner. 
Also, RVG version is not upgraded as part of diskgroup upgrades if rlinks are in attached state. RVG version can be upgraded using vxrvg upgrade command after detaching the rlinks and also when all sites are upgraded.

* 4067706 (Tracking ID: 4060462)

SYMPTOM:
System is unresponsive while adding new nodes.

DESCRIPTION:
After a node is removed, and adding node with  different node name is attempted; system turns
unresponsive. When a node leaves a cluster, in-memory information related to the node is not cleared due to the race condition.

RESOLUTION:
Fixed race condition to clear in-memory information of the node that leaves the cluster.

* 4067710 (Tracking ID: 4064208)

SYMPTOM:
Node is unresponsive while it gets added to the cluster.

DESCRIPTION:
While a node joins the cluster, if bits on the node are upgraded; size
of the object is interpreted incorrectly. Issue is observed when number of objects is higher and on
InfoScale 7.3.1 and above.

RESOLUTION:
Correct sizes are calculated for the data received from the master node.

* 4067712 (Tracking ID: 3868140)

SYMPTOM:
VVR primary site node might panic if the rlink disconnects while some data is getting replicated to secondary with below stack: 

dump_stack()
panic()
vol_rv_service_message_start()
update_curr()
put_prev_entity()
voliod_iohandle()
voliod_loop()
voliod_iohandle()

DESCRIPTION:
If rlink disconnects, VVR will clear some handles to the in-progress updates in memory, but if some IOs are still getting acknowledged from secondary to primary, then accessing updates for these IOs might result in panic at primary node.

RESOLUTION:
Code fix is implemented to correctly access the primary node updates in order to avoid the panic.

* 4067713 (Tracking ID: 3997531)

SYMPTOM:
VVR replication is not working, as vxnetd does not start properly.

DESCRIPTION:
If vxnetd restarts, a race condition blocks the completion of vxnetd start function after the shutdown process is completed.

RESOLUTION:
To avoid the race condition, the vxnetd start and stop functions are Synchronized.

* 4067715 (Tracking ID: 4008740)

SYMPTOM:
System panic

DESCRIPTION:
Due to a race condition there was code accessing freed VVR update which resulted in system panic

RESOLUTION:
Fixed race condition to avoid incorrect memory access

* 4067717 (Tracking ID: 4009151)

SYMPTOM:
Auto-import of diskgroup on system reboot fails with error:
"Disk for diskgroup not found"

DESCRIPTION:
When diskgroup is auto-imported, VxVM (Veritas Volume Manager) tries to find the disk with latest configuration copy. During this the DG import process searches through all the disks. The procedure also tries to find out if the DG contains clone disks or standard disks. While doing this calculation the DG import process incorrectly determines that current DG contains cloned disks instead of standard disks because of the stale value being there for the previous DG selected. Since VxVM incorrectly decides to import cloned disks instead of standard disks the import fails with "Disk for diskgroup not found" error.

RESOLUTION:
Code has been modified to accurately determine whether the DG contains standard or cloned disks and accordingly use those disks for DG import.

* 4067914 (Tracking ID: 4037757)

SYMPTOM:
VVR services always get started on boot up even if VVR is not being used.

DESCRIPTION:
VVR services get auto start as they are integrated in system init.d or similar framework.

RESOLUTION:
Added a tunable to not start VVR services on boot up

* 4067915 (Tracking ID: 4059134)

SYMPTOM:
Resync task takes too long on large size raid-5 volume

DESCRIPTION:
The resync of raid-5 volume will be done by small regions, and a check point will be setup for each region. If the size of raid-5 volume is large, it will be divided to large number of regions for resync, and check point setup will be issued against each region in loop. In each cycle, resync utility will open and connect vxconfigd daemon to do that,  each client would be created in vxconfigds context along with each region. As the number of created clients is large, it will take long time for vxconfigd which need to traverse the client list, thus, introduce the performance issue for resync.

RESOLUTION:
Code changes are made so that only one client created during the whole resync process, few time spent in client list traversing.

* 4069522 (Tracking ID: 4043276)

SYMPTOM:
If admin has offlined disks with "vxdisk offline <disk_name>" then vxattachd may brings the disk back to online state.

DESCRIPTION:
The "offline" state of VxVM disks is not stored persistently, it is recommended to use "vxdisk define" to persistently offline a disk.
For Veritas Netbackup Appliance there is a requirement that vxattachd shouldn't online the disks offlined with "vxdisk offline" operation.
To cater this request we have added tunable based enhancement to vxattachd for Netbackup Appliance use case.
The enhancement are done specifically so that Netback Appliance script can use it.
Following are the tunable details.
If skip_offline tunable is set then it will avoid offlined disk into online state. 
If handle_invalid_disk is set then it will offlined the "online invalid" SAN disks.
If remove_disable_dmpnode is set then it will cleanup stale entries from disk.info file and VxVM layer.
By default these tunables are off, we DONOT recommend InfoScale users to enable these vxattachd tunables.

RESOLUTION:
Code changes are done in vxattachd to cater Netbackup Appliance usecases.

* 4069523 (Tracking ID: 4056751)

SYMPTOM:
When importing a disk group containing all cloned disks with cloneoff option(-c) and some of disks are in read only status, the import fails and some of writable disks are removed from the disk group unexpectedly.

DESCRIPTION:
During disk group import with cloneoff option, a flag DA_VFLAG_ASSOC_DG gets set as update dgid is necessary. When associating da record of the read only disks, update private region TOC failed because of write failure, so the pending associations get aborted for all disks. During the aborting, for those of disks containing flag DA_VFLAG_ASSOC_DG would be removed from the dg and offline their config copy. Hence we can see a kind of private region corruption on writeable disks, actually they were removed from the dg.

RESOLUTION:
The issue has been fixed by failing the import at early stage if some of disks are read-only.

* 4069524 (Tracking ID: 4056954)

SYMPTOM:
When performing addsec using the VIPs with SSL enable the hang is observed

DESCRIPTION:
the issues comes when on primary side,  vradmin tries to create a local socket with endpoints as Local VIP & Interface IP and ends up calling SSL_accept and gets stuck infinitely.

RESOLUTION:
Appropriate code changes are done to handle scenario of vvr_islocalip() function to identify if the ip is local to the node.
So now by using the vvr_islocalip() the SSL_accept() func get called only if the ip is remote ip

* 4070099 (Tracking ID: 3159650)

SYMPTOM:
vxtune did not support vol_vvr_use_nat.

DESCRIPTION:
Platform specific methods were required to set vol_vvr_use_nat tunable, as its support for vxtune command was not present.

RESOLUTION:
Added vol_vvr_use_nat support for vxtune command.

* 4070253 (Tracking ID: 3911930)

SYMPTOM:
Valid PGR operations sometimes fail on a DMP node.

DESCRIPTION:
As part of the PGR operations, if the inquiry command finds that PGR is not
supported on the DMP node, the PGR_FLAG_NOTSUPPORTED flag is set on the node. Further PGR operations check this value and issue PGR commands only if the flag is not set. PGR_FLAG_NOTSUPPORTED remains set even if the hardware is changed so as to support PGR.

RESOLUTION:
A new command, enablepr, is provided in the vxdmppr utility to clear this flag on the specified DMP node.

* 4071131 (Tracking ID: 4071605)

SYMPTOM:
A security vulnerability exists in the third-party component libxml2.

DESCRIPTION:
VxVM uses a third-party component named libxml2 in which a security vulnerability exists.

RESOLUTION:
VxVM is updated to use a newer version of libxml2 in which the security vulnerability has been addressed.

* 4072874 (Tracking ID: 4046786)

SYMPTOM:
During reboot , nodes go out of cluster and FS is not mounted .

DESCRIPTION:
NVMe asl can some time give different UDID (difference with actual UDID would be absence of space characters in UDID) during discovery.

RESOLUTION:
usage of nvme ioctl to fetch data has been removed and sysfs will be used instead

* 4070186 (Tracking ID: 4041822)

SYMPTOM:
In an SRDF/Metro array setup, the last path is in the enabled state even after all the host and the array-side switch ports are disabled.

DESCRIPTION:
In case of an SRDF/Metro array setup, if the path connectivity is disrupted, one path may still appear to be in the enabled state until the connectivity is restored. For example:
# vxdmpadm getsubpaths dmpnodename=emc0_02e0
NAME                      STATE[A]    PATH-TYPE[M]  CTLR-NAME  ENCLR-TYPE  ENCLR-NAME  ATTRS  PRIORITY
=======================================================================================================
c7t50000975B00AD80Ad9s2   DISABLED       -           c7        EMC         emc0        -      -
c7t50000975B00AD84Ad9s2   DISABLED       -           c7        EMC         emc0        -      -
c7t50000975B00AF40Ad70s2  DISABLED       -           c7        EMC         emc0        -      -
c7t50000975B00AF44Ad70s2  DISABLED       -           c7        EMC         emc0        -      -
c8t50000975B00AD80Ad9s2   DISABLED       -           c8        EMC         emc0        -      -
c8t50000975B00AD84Ad9s2   DISABLED       -           c8        EMC         emc0        -      -
c8t50000975B00AF40Ad70s2  ENABLED(A)     -           c8        EMC         emc0        -      -
c8t50000975B00AF44Ad70s2  DISABLED       -           c8        EMC         emc0        -      -
Note: This situation does not occur if I/Os are in progress through this DMP node. DMP identifies the disruption in the connectivity and correctly updates the state of the path.

RESOLUTION:
Made code changes to fixed this issue, To refresh the state of the paths sooner, run the 'vxdisk scandisks' command.

Patch ID: VRTSvxvm-7.4.2.2600

* 4047588 (Tracking ID: 4044072)

SYMPTOM:
I/Os fail for NVMe disks with 4K block size on the RHEL 8.4 kernel.

DESCRIPTION:
This issue occurs only in the case of disks of the 4K block size. I/Os complete successfully when the disks of 512 block size are used. If disks of the 4K block size are used, the following error messages are logged:
[ 51.228908] VxVM vxdmp V-5-0-0 [Error] i/o error occurred (errno=0x206) on dmpnode 201/0x10
[ 51.230070] blk_update_request: operation not supported error, dev nvme1n1, sector 240 op 0x0:(READ) flags 0x800 phys_seg 1 prio class 0
[ 51.240861] blk_update_request: operation not supported error, dev nvme0n1, sector 0 op 0x0:(READ) flags 0x800 phys_seg 1 prio class 0

RESOLUTION:
Updated the VxVM and the VxDMP modules to address this issue. The logical block size is now set to 4096 bytes, which is the same as the physical block size.

* 4047722 (Tracking ID: 4023390)

SYMPTOM:
Vxconfigd crashes as a disk contains invalid privoffset(160), which is smaller than minimum required offset(VTOC 265, GPT 208).

DESCRIPTION:
There may have disk label corruption or stale information residents on the disk header, which caused unexpected label written.

RESOLUTION:
Add a assert when updating CDS label to ensure the valid privoffset written to disk header.

* 4048120 (Tracking ID: 4031452)

SYMPTOM:
Add node operation is failing with error "Error found while invoking '' in the new node, and rollback done in both nodes"

DESCRIPTION:
Stack showed a valid address for pointer ptmap2, but still it generated core.
It suggested that it might be a double-free case. Issue lies in freeing a pointer

RESOLUTION:
Added handling for such case by doing NULL assignment to pointers wherever they are freed

* 4048867 (Tracking ID: 4041515)

SYMPTOM:
VxVM volumes mentioned in /etc/fstab may not get mount at boot time and user may
face system boot hang.

DESCRIPTION:
If any VxVM volumes are mentioned in /etc/fstab, then such filesystems/volumes
are expected to get auto-mounted after systemd reboot.
With systemd framework in place on RHEL-7/RHEL-8/SLES-12 platforms, it might
happen that some block devices are discovered late during boot and hence the
mount might get skipped. If OS tried to mount such block devices which are
not yet available, unexpected hang issues might happen during system boot.

RESOLUTION:
To avoid boot failures, if user needs to add any VxVM volumes in /etc/fstab, then
its recommended to also specify option _netdev and reload sytsemd before reboot,
in order to follow proper shutdown and boot sequence for VxVM volumes.

The user may follow these steps to add VxVM volumes to /etc/fstab only if its
intended to auto-mount such file systems at next reboots.

Note: These steps should be performed immediately after editing the mount path
      in /etc/fstab, before any subsequent reboots.

1.add _netdev option to /etc/fstab along with the mount path:
Example:
        /dev/vx/dsk/testdg/testvol  /testvol  vxfs    _netdev 0 0
2.Reload the systemd daemon
        systemctl daemon-reload

* 4051701 (Tracking ID: 4031597)

SYMPTOM:
vradmind generates a core dump in __strncpy_sse2_unaligned.

DESCRIPTION:
The following core dump is generated:
(gdb)bt
Thread 1 (Thread 0x7fcd140b2780 (LWP 90066)):
#0 0x00007fcd12b1d1a5 in __strncpy_sse2_unaligned () from /lib64/libc.so.6
#1 0x000000000059102e in IpmServer::accept (this=0xf21168, new_handlesp=0x0) at Ipm.C:3406
#2 0x0000000000589121 in IpmHandle::events (handlesp=0xf12088, new_eventspp=0x7ffc8e80a4e0, serversp=0xf120c8, new_handlespp=0x0, ms=100) at Ipm.C:613
#3 0x000000000058940b in IpmHandle::events (handlesp=0xfc8ab8, vlistsp=0xfc8938, ms=100) at Ipm.C:645
#4 0x000000000040ae2a in main (argc=1, argv=0x7ffc8e80e8e8) at srvmd.C:722

RESOLUTION:
vradmind is updated to properly handle getpeername(), which addresses this issue.

* 4051702 (Tracking ID: 4019182)

SYMPTOM:
In case of a VxDMP configuration, an InfoScale server panics when applying a patch. The following stack trace is generated:
unix:panicsys+0x40()
unix:vpanic_common+0x78()
unix:panic+0x1c()
unix:mutex_enter() - frame recycled
vxdmp(unloaded text):0x108b987c(jmpl?)()
vxdmp(unloaded text):0x108ab380(jmpl?)(0)
genunix:callout_list_expire+0x5c()
genunix:callout_expire+0x34()
genunix:callout_execute+0x10()
genunix:taskq_thread+0x42c()
unix:thread_start+4()

DESCRIPTION:
Some VxDMP functions create callouts. The VxDMP module may already be unloaded when a callout expires, which may cause the server to panic. VxDMP should cancel any previous timeout function calls before it unloads itself.

RESOLUTION:
VxDMP is updated to cancel any previous timeout function calls before unloading itself.

* 4051703 (Tracking ID: 4010794)

SYMPTOM:
Veritas Dynamic Multi-Pathing (DMP) caused system panic in a cluster with below stack while there were storage activities going on.
dmp_start_cvm_local_failover+0x118()
dmp_start_failback+0x398()
dmp_restore_node+0x2e4()
dmp_revive_paths+0x74()
gen_update_status+0x55c()
dmp_update_status+0x14()
gendmpopen+0x4a0()

DESCRIPTION:
It could happen dmpnode's current primary path became invalid when disks were attached/detached in a cluster. DMP accessed the current primary path without doing sanity check. Hence system panic due to an invalid pointer.

RESOLUTION:
Code changes have been made to avoid accessing a invalid pointer.

* 4051705 (Tracking ID: 4049371)

SYMPTOM:
DMP unable to display all WWN details when running "vxdmpadm getctlr all".

DESCRIPTION:
When udev discovers any sd device, vxvm will remove the old HBA info file and create a new one. During this period, vxesd could fail to obtain the HBA information.

RESOLUTION:
Code changes have been done to aviod missing the HBA info.

* 4051706 (Tracking ID: 4046007)

SYMPTOM:
disk private region gets corrupted after cluster name change in FSS environment.

DESCRIPTION:
Under some conditions, when vxconfigd tries to update TOC(table of contents) blocks of disk private region, the allocation maps may not be initialized in memory yet. This could make allocation maps incorrect and lead to corruption of disk private region.

RESOLUTION:
Code changes have been done to avoid corruption of disk private region.

* 4052119 (Tracking ID: 4045871)

SYMPTOM:
vxconfigd crashed at ddl_get_disk_given_path with following stacks:
ddl_get_disk_given_path
ddl_reconfigure_all
ddl_find_devices_in_system
find_devices_in_system
mode_set
setup_mode
startup
main
_start

DESCRIPTION:
Under some situations, duplicate paths can be added in one dmpnode in vxconfigd. After that if the duplicate paths get removed the empty path entry can be generated for that dmpnode. Thus later when vxconfigd accesses the empty path entry, it will crash due to NULL pointer reference.

RESOLUTION:
Code changes have been done to avoid the duplicate paths to be added.

* 4055211 (Tracking ID: 4052191)

SYMPTOM:
Any scripts or command files in the / directory may run unexpectedly at system startup.
and vxvm volumes will not be available until those scripts or commands are complete.

DESCRIPTION:
If this issue occurs, /var/svc/log/system-vxvm-vxvm-configure:default.log indicates that a script or command
located in the / directory has been executed.
example-
ABC Script ran!!
/lib/svc/method/vxvm-configure[241] abc.sh not found
/lib/svc/method/vxvm-configure[242] abc.sh not found
/lib/svc/method/vxvm-configure[243] abc.sh not found
/lib/svc/method/vxvm-configure[244] app/ cannot execute
In this example, abc.sh is located in the / directory and just echoes "ABC script ran !!". vxvm-configure launched abc.sh.

RESOLUTION:
Issue got fixed by changing the comments format in SunOS_5.11.vxvm-configure.sh script.

* 4056329 (Tracking ID: 4056156)

SYMPTOM:
VxVM package fails to load on SLES15 SP3

DESCRIPTION:
Changes introduced in SLES15 SP3 impacted VxVM block IO functionality. This included changes in block layer structures in kernel.

RESOLUTION:
Changes have been done to handle the impacted functionalities.

* 4059318 (Tracking ID: 4050050)

SYMPTOM:
VxVM volumes mentioned in /etc/fstab may not get mount at boot time and user may
face system boot hang.

DESCRIPTION:
If any VxVM volumes are mentioned in /etc/fstab, then such filesystems/volumes
are expected to get auto-mounted after systemd reboot.
With systemd framework in place on RHEL-7/RHEL-8/SLES-12 platforms, it might
happen that some block devices are discovered late during boot and hence the
mount might get skipped. If OS tried to mount such block devices which are
not yet available, unexpected hang issues might happen during system boot.

RESOLUTION:
To avoid boot failures, if user needs to add any VxVM volumes in /etc/fstab, then
its recommended to also specify option _netdev and reload sytsemd before reboot,
in order to follow proper shutdown and boot sequence for VxVM volumes.

The user may follow these steps to add VxVM volumes to /etc/fstab only if its
intended to auto-mount such file systems at next reboots.

Note: These steps should be performed immediately after editing the mount path
      in /etc/fstab, before any subsequent reboots.

1.add _netdev option to /etc/fstab along with the mount path:
Example:
        /dev/vx/dsk/testdg/testvol  /testvol  vxfs    _netdev 0 0
2.Reload the systemd daemon
        systemctl daemon-reload

Patch ID: VRTSvxvm-7.4.2.2200

* 4018173 (Tracking ID: 3852146)

SYMPTOM:
In a CVM cluster, when importing a shared diskgroup specifying both -c and -o
noreonline options, the following error may be returned: 
VxVM vxdg ERROR V-5-1-10978 Disk group <dgname>: import failed: Disk for disk
group not found.

DESCRIPTION:
The -c option will update the disk ID and disk group ID on the private region
of the disks in the disk group being imported. Such updated information is not
yet seen by the slave because the disks have not been re-onlined (given that
noreonline option is specified). As a result, the slave cannot identify the
disk(s) based on the updated information sent from the master, causing the
import to fail with the error Disk for disk group not found.

RESOLUTION:
The code is modified to handle the working of the "-c" and "-o noreonline"
options together.

* 4018178 (Tracking ID: 3906534)

SYMPTOM:
After enabling DMP (Dynamic Multipathing) Native support, enable /boot to be
mounted on DMP device.

DESCRIPTION:
Currently /boot is mounted on top of OS (Operating System) device. When DMP
Native support is enabled, only VG's (Volume Groups) are migrated from OS 
device to DMP device.This is the reason /boot is not migrated to DMP device.
With this if OS device path is not available then system becomes unbootable 
since /boot is not available. Thus it becomes necessary to mount /boot on DMP
device to provide multipathing and resiliency.

RESOLUTION:
Code changes have been done to migrate /boot on top of DMP device when DMP
Native support is enabled.
Note - The code changes are currently implemented for RHEL-6 only. For other
linux platforms, /boot will still not be mounted on the DMP device

* 4039517 (Tracking ID: 4012763)

SYMPTOM:
IO hang may happen in VVR (Veritas Volume Replicator) configuration when SRL overflows for one rlink while another one rlink is in AUTOSYNC mode.

DESCRIPTION:
In VVR, if the SRL overflow happens for rlink (R1) and some other rlink (R2) is ongoing the AUTOSYNC, then AUTOSYNC is aborted for R2, R2 gets detached and DCM mode is activated on R1 rlink.

However, due to a race condition in code handling AUTOSYNC abort and DCM activation in parallel, the DCM could not be activated properly and IO which caused DCM activation gets queued incorrectly, this results in a IO hang.

RESOLUTION:
The code has been modified to fix the race issue in handling the AUTOSYNC abort and DCM activation at same time.

* 4046906 (Tracking ID: 3956607)

SYMPTOM:
When removing a VxVM disk using vxdg-rmdisk operation, the following error occurs requesting a disk reclaim.
VxVM vxdg ERROR V-5-1-0 Disk <device_name> is used by one or more subdisks which are pending to be reclaimed.
Use "vxdisk reclaim <device_name>" to reclaim space used by these subdisks, and retry "vxdg rmdisk" command.
Note: reclamation is irreversible. But when issuing vxdisk-reclaim as advised, the command dumps core.

DESCRIPTION:
In the disk-reclaim code path, memory allocation can fail at realloc() but the failure 
not detected, causing an invalid address to be referenced and a core dump results.

RESOLUTION:
The disk-reclaim code path now handles failure of realloc properly.

* 4046907 (Tracking ID: 4041001)

SYMPTOM:
When some nodes are rebooted in the system, nodes cannot join back as disk attach transactions are not
happening.

DESCRIPTION:
In VxVM, when some nodes are rebooted, some plexes of volume are detached. It may happen that all plexes
of volume are disabled. In this case, if all plexes of some DCO volume become inaccessible, that DCO
volume state should be marked as BADLOG.

If state is not marked BADLOG, transactions fail with following error.
VxVM ERROR V-5-1-10128  DCO experienced IO errors during the operation. Re-run the operation after ensuring that DCO is accessible

As the transactions are failing, system goes in hang state and nodes cannot join.

RESOLUTION:
The code is fixed to mark DCO state as BADLOG when all the plexes of DCO becomes inaccessible during IO load.

* 4046908 (Tracking ID: 4038865)

SYMPTOM:
System panick at vxdmp module with following calltrace in IRQ stack.
native_queued_spin_lock_slowpath
queued_spin_lock_slowpath
_raw_spin_lock_irqsave7
dmp_get_shared_lock
gendmpiodone
dmpiodone
bio_endio
blk_update_request
scsi_end_request
scsi_io_completion
scsi_finish_command
scsi_softirq_done
blk_done_softirq
__do_softirq
call_softirq
do_softirq
irq_exit
do_IRQ
 <IRQ stack>

DESCRIPTION:
A deadlock issue can happen between inode_hash_lock and DMP shared lock, when one process holding inode_hash_lock but acquires the DMP shared lock in IRQ context, in the mean time other process holding the DMP shared lock may acquire inode_hash_lock.

RESOLUTION:
Code changes have been done to avoid the deadlock issue.

* 4047588 (Tracking ID: 4044072)

SYMPTOM:
I/Os fail for NVMe disks with 4K block size on the RHEL 8.4 kernel.

DESCRIPTION:
This issue occurs only in the case of disks of the 4K block size. I/Os complete successfully when the disks of 512 block size are used. If disks of the 4K block size are used, the following error messages are logged:
[ 51.228908] VxVM vxdmp V-5-0-0 [Error] i/o error occurred (errno=0x206) on dmpnode 201/0x10
[ 51.230070] blk_update_request: operation not supported error, dev nvme1n1, sector 240 op 0x0:(READ) flags 0x800 phys_seg 1 prio class 0
[ 51.240861] blk_update_request: operation not supported error, dev nvme0n1, sector 0 op 0x0:(READ) flags 0x800 phys_seg 1 prio class 0

RESOLUTION:
Updated the VxVM and the VxDMP modules to address this issue. The logical block size is now set to 4096 bytes, which is the same as the physical block size.

* 4047590 (Tracking ID: 4045501)

SYMPTOM:
The following errors occur during the installation of the VRTSvxvm and the VRTSaslapm packages on CentOS 8.4 systems:
~
Verifying packages...
Preparing packages...
This release of VxVM is for Red Hat Enterprise Linux 8
and CentOS Linux 8.
Please install the appropriate OS
and then restart this installation of VxVM.
error: %prein(VRTSvxvm-7.4.1.2500-RHEL8.x86_64) scriptlet failed, exit status 1
error: VRTSvxvm-7.4.1.2500-RHEL8.x86_64: install failed
cat: 9: No such file or directory
~

DESCRIPTION:
The product installer reads the /etc/centos-release file to identify the Linux distribution. This issue occurs because the file has changed for CentOS 8.4.

RESOLUTION:
The product installer is updated to identify the correct Linux distribution so that the VRTSvxvm and the VRTSaslapm packages get installed successfully.

* 4047592 (Tracking ID: 3992040)

SYMPTOM:
CFS-Stress-l2 hits assert f:vx_dio_bio_done:2

DESCRIPTION:
In RHEL8.0/SLES15 kernel code, The value in bi_status isn't a standard error code at and there are completely separate set of values that are all small positive integers (for example, BLK_STS_OK and BLK_STS_IOERROR) while actual errors sent by VM are different hence VM should send proper bi_status to FS with newer kernel.

RESOLUTION:
Code changes are done to have a map for bi_status and bi_error conversion( as it's been there in Linux Kernel code - blk-core.c)

* 4047595 (Tracking ID: 4009353)

SYMPTOM:
After the command, vxdmpadm settune dmp_native_support=on, machine goes into maintenance mode. Issue is produced on physical setup with root lvm disk

DESCRIPTION:
If there is '-' in native vgname, then the script is taking an inaccurate vgname.

RESOLUTION:
Code changes have been made to fix the issue.

* 4047695 (Tracking ID: 3911930)

SYMPTOM:
Valid PGR operations sometimes fail on a dmpnode.

DESCRIPTION:
As part of the PGR operations, if the inquiry command finds that PGR is not
supported on the dmpnode node, a flag PGR_FLAG_NOTSUPPORTED is set on the
dmpnode.
Further PGR operations check this flag and issue PGR commands only if this flag
is
NOT set.
This flag remains set even if the hardware is changed so as to support PGR.

RESOLUTION:
A new command (namely enablepr) is provided in the vxdmppr utility to clear this
flag on the specified dmpnode.

* 4047722 (Tracking ID: 4023390)

SYMPTOM:
Vxconfigd crashes as a disk contains invalid privoffset(160), which is smaller than minimum required offset(VTOC 265, GPT 208).

DESCRIPTION:
There may have disk label corruption or stale information residents on the disk header, which caused unexpected label written.

RESOLUTION:
Add a assert when updating CDS label to ensure the valid privoffset written to disk header.

Patch ID: VRTSvxvm-7.4.2.1600

* 4013529 (Tracking ID: 4011691)

SYMPTOM:
Observed high CPU consumption on the VVR secondary nodes because of high pending IO load.

DESCRIPTION:
High replication related IO load on the VVR secondary and the requirement of maintaining write order fidelity with limited memory pools created  contention. This resulted in multiple VxVM kernel threads contending for shared resources and there by increasing the CPU consumption.

RESOLUTION:
Limited the way in which VVR consumes its resources so that a high pending IO load would not result into high CPU consumption.

* 4027262 (Tracking ID: 4027261)

SYMPTOM:
These log files have permissions rw-rw-rw which are being flagged during customer's security scans.

DESCRIPTION:
There have been multiple concerns about world-writeable permissions on /var/VRTSvxvm/in.vxrsyncd.stderr and /var/adm/vx/vxdmpd.log .These log files have permissions rw-rw-rw which are being flagged by customer's security scans.

RESOLUTION:
The files are just log files with no sensitive information to leak, not much of a security threat. The files may not require world write permissions and can be restricted to the root user. Hence the permission of these files have been changed now !

* 4033879 (Tracking ID: 3993050)

SYMPTOM:
vxdctl dumpmsg command gets stuck on large node cluster during reconfiguration

DESCRIPTION:
vxdctl dumpmsg command gets stuck on large node cluster during reconfiguration with following stack. This causes /var/adm/vx/voldctlmsg.log file
to get filled with old repeated messages in GBs consuming most of /var space.
# pstack 210460
voldctl_get_msgdump ()
do_voldmsg ()
main ()

RESOLUTION:
Code changes have been done to dump correct required messages to file

* 4037288 (Tracking ID: 4034857)

SYMPTOM:
Current load of Vxvm modules were failing on SLES15 SP2(Kernel - 5.3.18-22.2-default).

DESCRIPTION:
With new kernel (5.3.18-22.2-default) below mentioned functions were depricated -
1. gettimeofday() 
2.struct timeval
3. bio_segments()
4. iov_for_each()
5.req filed in struct next_rq
Also, there was susceptible Data corruption with big size IO(>1M) processed by Linux kernel IO splitting.

RESOLUTION:
Code changes are mainly to support kernel 5.3.18 and to provide support for deprecated functions. 
Remove dependency on req->next_rq field in blk-mq code
And, changes related to bypassing the Linux kernel IO split functions, which seems redundant for VxVM IO processing.

Patch ID: VRTSvxvm-7.4.2.1500

* 4018182 (Tracking ID: 4008664)

SYMPTOM:
System panic occurs with the following stack:

void genunix:psignal+4()
void vxio:vol_logger_signal_gen+0x40()
int vxio:vollog_logentry+0x84()
void vxio:vollog_logger+0xcc()
int vxio:voldco_update_rbufq_chunk+0x200()
int vxio:voldco_chunk_updatesio_start+0x364()
void vxio:voliod_iohandle+0x30()
void vxio:voliod_loop+0x26c((void *)0)
unix:thread_start+4()

DESCRIPTION:
Vxio keeps vxloggerd proc_t that is used to send a signal to vxloggerd. In case vxloggerd has been ended for some reason, the signal may be sent to an unexpected process, which may cause panic.

RESOLUTION:
Code changes have been made to correct the problem.

* 4020207 (Tracking ID: 4018086)

SYMPTOM:
vxiod with ID as 128 was stuck with below stack:

 #2 [] vx_svar_sleep_unlock at [vxfs]
 #3 [] vx_event_wait at [vxfs]
 #4 [] vx_async_waitmsg at [vxfs]
 #5 [] vx_msg_send at [vxfs]
 #6 [] vx_send_getemapmsg at [vxfs]
 #7 [] vx_cfs_getemap at [vxfs]
 #8 [] vx_get_freeexts_ioctl at [vxfs]
 #9 [] vxportalunlockedkioctl at [vxportal]
 #10 [] vxportalkioctl at [vxportal]
 #11 [] vxfs_free_region at [vxio]
 #12 [] vol_ru_start_replica at [vxio]
 #13 [] vol_ru_start at [vxio]
 #14 [] voliod_iohandle at [vxio]
 #15 [] voliod_loop at [vxio]

DESCRIPTION:
With SmartMove feature as ON, it can happen vxiod with ID as 128 starts replication where RVG was in DCM mode, this vxiod is waiting for filesystem's response if a given region is used by filesystem or not. Filesystem will trigger MDSHIP IO on logowner. Due to a bug in code, MDSHIP IO always gets queued in vxiod with ID as 128. Hence a dead lock situation.

RESOLUTION:
Code changes have been made to avoid handling MDSHIP IO in vxiod whose ID is bigger than 127.

* 4020438 (Tracking ID: 4020046)

SYMPTOM:
The following IO errors are reported on VxVM sub-disks result in DRL log detached without any SCSI errors detected.

VxVM vxio V-5-0-1276 error on Subdisk [xxxx] while writing volume [yyyy][log] offset 0 length [zzzz]
VxVM vxio V-5-0-145 DRL volume yyyy[log] is detached

DESCRIPTION:
DRL plexes detached as an atomic write flag (BIT_ATOMIC) was set on BIO unexpectedly. The BIT_ATOMIC flag gets set on bio only if VOLSIO_BASEFLAG_ATOMIC_WRITE flag is set on SUBDISK SIO and its parent MVWRITE SIO's sio_base_flags. When generating MVWRITE SIO,  it's sio_base_flags was copied from a gio structure, because the gio structure memory isn't initialized it may contain gabarge values, hence the issue.

RESOLUTION:
Code changes have been made to fix the issue.

* 4021238 (Tracking ID: 4008075)

SYMPTOM:
Observed with ASL changes for NVMe, This issue observed in reboot scenario. For every reboot machine was hitting panic And this was happening in loop.

DESCRIPTION:
panic was hitting for such splitted bios, root cause for this is RHEL8 introduced a new field named as __bi_remaining.
where __bi_remaining is maintanins the count of chained bios, And for every endio that __bi_remaining gets atomically decreased in bio_endio() function.
While decreasing __bi_remaining OS checks that the __bi_remaining 'should not <= 0' and in our case __bi_remaining was always 0 and we were hitting OS
BUG_ON.

RESOLUTION:
>>> For scsi devices maxsize is 4194304,
[   26.919333] DMP_BIO_SIZE(orig_bio) : 16384, maxsize: 4194304
[   26.920063] DMP_BIO_SIZE(orig_bio) : 262144, maxsize: 4194304

>>>and for NVMe devices maxsize is 131072
[  153.297387] DMP_BIO_SIZE(orig_bio) : 262144, maxsize: 131072
[  153.298057] DMP_BIO_SIZE(orig_bio) : 262144, maxsize: 131072

* 4021240 (Tracking ID: 4010612)

SYMPTOM:
$ vxddladm set namingscheme=ebn lowercase=no
This issue observed for NVMe and ssd. where every disk has separate enclosure like nvme0, nvme1... so on. means every nvme/ssd disks names would be 
hostprefix_enclosurname0_disk0, hostprefix_enclosurname1_disk0....

DESCRIPTION:
$ vxddladm set namingscheme=ebn lowercase=no
This issue observed for NVMe and ssd. where every disk has separate enclosure like nvme0, nvme1... so on.
means every nvme/ssd disks names would be hostprefix_enclosurname0_disk0, hostprefix_enclosurname1_disk0....
eg.
smicro125_nvme0_0 <--- disk1
smicro125_nvme1_0 <--- disk2

for lowercase=no our current code is suppressing the suffix digit of enclosurname and hence multiple disks gets same name and it is showing udid_mismatch 
because whatever udid of private region is not matching with ddl. ddl database showing wrong info because of multiple disks gets same name.

smicro125_nvme_0 <--- disk1   <<<<<<<-----here suffix digit of nvme enclosure suppressed
smicro125_nvme_0 <--- disk2

RESOLUTION:
Append the suffix integer while making da_name

* 4021346 (Tracking ID: 4010207)

SYMPTOM:
System panic occurred with the below stack:

native_queued_spin_lock_slowpath()
queued_spin_lock_slowpath()
_raw_spin_lock_irqsave()
volget_rwspinlock()
volkiodone()
volfpdiskiodone()
voldiskiodone_intr()
voldmp_iodone()
bio_endio()
gendmpiodone()
dmpiodone()
bio_endio()
blk_update_request()
scsi_end_request()
scsi_io_completion()
scsi_finish_command()
scsi_softirq_done()
blk_done_softirq()
__do_softirq()
call_softirq()

DESCRIPTION:
As part of collecting the IO statistics collection, the vxstat thread acquires a spinlock and tries to copy data to the user space. During the data copy, if some page fault happens, then the thread would relinquish the CPU and provide the same to some other thread. If the thread which gets scheduled on the CPU requests the same spinlock which vxstat thread had acquired, then this results in a hard lockup situation.

RESOLUTION:
Code has been changed to properly release the spinlock before copying out the data to the user space during vxstat collection.

* 4021366 (Tracking ID: 4008741)

SYMPTOM:
VxVM device files appears to have device_t SELinux label.

DESCRIPTION:
If an unauthorized or modified device is allowed to exist on the system, there is the possibility the system may perform unintended or unauthorized operations.
eg: ls -LZ
...
...
/dev/vx/dsk/testdg/vol1   system_u:object_r:device_t:s0
/dev/vx/dmpconfig         system_u:object_r:device_t:s0
/dev/vx/vxcloud           system_u:object_r:device_t:s0

RESOLUTION:
Code changes made to change the device labels to misc_device_t, fixed_disk_device_t.

* 4023095 (Tracking ID: 4007920)

SYMPTOM:
vol_snap_fail_source tunable is set still largest and oldest snapshot automatically deleted when cache object becomes full

DESCRIPTION:
If vol_snap_fail_source tunable is set then oldest snapshot should not be deleted in case of cache object full. Flex requires these snapshots for rollback.

RESOLUTION:
Added fix to stop auto snapshot deletion in vxcached

Patch ID: VRTSvlic-4.01.742.300

* 4049416 (Tracking ID: 4049416)

SYMPTOM:
Frequent Security vulnerabilities reported in JRE.

DESCRIPTION:
There are many vulnerabilities reported in JRE every quarter. To overcome this vulnerabilities issue migrate Telemetry Collector from Java to Python.
All other behavior of Telemetry Collector will remain the same.

RESOLUTION:
Migrated Telemetry Collector from Java to Python.

Patch ID: VRTSpython-3.7.4.35

* 4049693 (Tracking ID: 4049692)

SYMPTOM:
In order to support Licensing module, VRTSpython must include additional modules in it.

DESCRIPTION:
Licensing module utilizes VRTSpython package which needs additional modules to be added in VRTSpython.

RESOLUTION:
VRTSpython packages has been updated to include additional python modules in it.

Patch ID: VRTSvxfen-7.4.2.2500

* 4057309 (Tracking ID: 4057308)

SYMPTOM:
After an InfoScale upgrade, the updated values of vxfen tunables that are used when loading the corresponding module fail to persist.

DESCRIPTION:
When the value of a tunable in /etc/sysconfig/vxfen is changed before an RPM upgrade, the existing value gets reset to the default value.

RESOLUTION:
The vxfen module is updated so that its existing tunable values in /etc/sysconfig/vxfen can be retained even after an RPM upgrade.

* 4067460 (Tracking ID: 4004248)

SYMPTOM:
vxfend process segfaults and coredumped

DESCRIPTION:
During fencing race, sometimes vxfend crashes and generates core dump

RESOLUTION:
Vxfend internally uses fork and exec to execute sub tasks. The new child process was using same file descriptors for logging purpose. This simultaneous read of same file using single file descriptor was resulting incorrect read and hence the process crash and coredump. This fix creates new file descriptor for child process to fix the crash

Patch ID: VRTSvxfen-7.4.2.2100

* 4029493 (Tracking ID: 4029261)

SYMPTOM:
An entire InfoScale cluster may go down unexpectedly if one of its nodes receives a RECONFIG message during a shutdown or a restart operation.

DESCRIPTION:
If a cluster node receives a RECONFIG message while a shutdown or a restart operation is in progress, it may participate in the fencing race. The node may also win the race and then proceed to shut down. If this situation occurs, the fencing module panics the nodes that lost the race, which may cause the entire cluster to go down.

RESOLUTION:
This hotfix updates the fencing module so that it stops a cluster node from joining a race, if it receives a RECONFIG message while a shutdown or a restart operation is in progress.

* 4046423 (Tracking ID: 4043619)

SYMPTOM:
The OCPR function fails in case of SCSI3 fencing to customized mode.

DESCRIPTION:
The Online Coordination Point Replacement (OCPR) function fails to work as expected in case of SCSI3 fencing to customized mode. This issue occurs due to an incorrect change in the invocation of vxfend.

RESOLUTION:
The fencing module is updated so that OCPR works as expected in case of SCSI3 fencing to customized mode.

* 4056996 (Tracking ID: 4056991)

SYMPTOM:
Veritas Infoscale Availability (VCS) does not support SUSE Linux Enterprise Server
15 Service Pack 3 (SLES 15 SP3).

DESCRIPTION:
Veritas Infoscale Availability did not support SUSE Linux Enterprise Server
versions released after SLES 15 SP2.

RESOLUTION:
Veritas Infoscale Availability support for SUSE Linux Enterprise Server 15 SP3 is
now introduced.

Patch ID: VRTSvxfen-7.4.2.1600

* 4038116 (Tracking ID: 4038112)

SYMPTOM:
Veritas Infoscale Availability (VCS) does not support SUSE Linux Enterprise Server
15 Service Pack 2 (SLES 15 SP2).

DESCRIPTION:
Veritas Infoscale Availability did not support SUSE Linux Enterprise Server
versions released after SLES 15 SP1.

RESOLUTION:
Veritas Infoscale Availability support for SUSE Linux Enterprise Server 15 SP2 is
now introduced

Patch ID: VRTSvxfen-7.4.2.1300

* 4006982 (Tracking ID: 3988184)

SYMPTOM:
The vxfen process cannot complete due to incomplete vxfentab file.

DESCRIPTION:
When I/O fencing starts, the vxfen startup script creates the /etc/vxfentab file on each node. If the coordination disk discovery is slow, the vxfen startup script fails to include all the coordination points in the vxfentab file. As a result, the vxfen startup script gets stuck in a loop.

RESOLUTION:
The vxfen startup process is modified to exit from the loop if it gets stuck while configuring 'vxfenconfig -c'. On exiting from the loop, systemctl starts vxfen again and tries to use the updated vxfentab file.

* 4007375 (Tracking ID: 4000745)

SYMPTOM:
The VxFEN process fails to start due to late discovery of the VxFEN disk group.

DESCRIPTION:
When I/O fencing starts, the VxFEN startup script creates this /etc/vxfentab file on each node. During disk-based fencing, the VxVM module may take longer time to discover the VxFEN disk group. Because of this delay, the 'generate disk list' opreration times out. Therefore, the VxFEN process fails to start and reports the following error: 'ERROR: VxFEN cannot generate vxfentab because vxfendg does not exist'

RESOLUTION:
A new tunable, getdisks_timeout, is introduced to specify the timeout value for the VxFEN disk group discovery. The maximum and the default value for this tunable is 600 seconds. You can set the value of this tunable by adding an getdisks_timeout=<time_in_sec> entry in the /etc/vxfenmode file.

* 4007376 (Tracking ID: 3996218)

SYMPTOM:
In a customized fencing mode, the 'vxfenconfig -c' command creates a new vxfend process even if VxFen is already configured.

DESCRIPTION:
When you configure fencing in the customized mode and run the 'vxfenconfig -c' command, the vxfenconfig utility reports the 'VXFEN ERROR V-11-1-6 vxfen already configured...' error. Moreover, it also creates a new vxfend process even if VxFen is already configured. Such redundant processes may impact the performance of the system.

RESOLUTION:
The vxfenconfig utility is modified so that it does not create a new vxfend process when VxFen is already configured.

* 4007677 (Tracking ID: 3970753)

SYMPTOM:
Freeing uninitialized/garbage memory causes panic in vxfen.

DESCRIPTION:
Freeing uninitialized/garbage memory causes panic in vxfen.

RESOLUTION:
Veritas has modified the VxFen kernel module to fix the issue by initializing the object before attempting to free it.
 .

Patch ID: VRTSamf-7.4.2.2500

* 4066721 (Tracking ID: 4066719)

SYMPTOM:
InfoScale stack upgrade issues observed on Solaris 11.4

DESCRIPTION:
InfoScale stack upgrade showed multiple issues due to separate AMF modules for 11.3, 11.4, and later versions.

RESOLUTION:
AMF now provides single module for Solaris 11.4 and later version. Support for Solaris 11.3 is now removed.

Patch ID: VRTSamf-7.4.2.2100

* 4046524 (Tracking ID: 4041596)

SYMPTOM:
A cluster node panics when the arguments passed to a process that is registered with AMF exceeds 8K characters.

DESCRIPTION:
This issue occurs due to improper parsing and handling of argument lists that are passed to processes registered with AMF.

RESOLUTION:
AMF is updated to correctly parse and handle argument lists for processes.

* 4056995 (Tracking ID: 4056991)

SYMPTOM:
Veritas Infoscale Availability (VCS) does not support SUSE Linux Enterprise Server
15 Service Pack 3 (SLES 15 SP3).

DESCRIPTION:
Veritas Infoscale Availability did not support SUSE Linux Enterprise Server
versions released after SLES 15 SP2.

RESOLUTION:
Veritas Infoscale Availability support for SUSE Linux Enterprise Server 15 SP3 is
now introduced.

Patch ID: VRTSamf-7.4.2.1600

* 4038115 (Tracking ID: 4038112)

SYMPTOM:
Veritas Infoscale Availability (VCS) does not support SUSE Linux Enterprise Server
15 Service Pack 2 (SLES 15 SP2).

DESCRIPTION:
Veritas Infoscale Availability did not support SUSE Linux Enterprise Server
versions released after SLES 15 SP1.

RESOLUTION:
Veritas Infoscale Availability support for SUSE Linux Enterprise Server 15 SP2 is
now introduced

Patch ID: VRTScps-7.4.2.2500

* 4054435 (Tracking ID: 4018218)

SYMPTOM:
Secure communication between a CP Server and a CP Client cannot be established using TLSv1.2

DESCRIPTION:
Secure communication between a CP Server and a CP Client cannot be established using TLSv1.2.

RESOLUTION:
This hotfix updates the VRTScps module so that InfoScale CP Client can establish secure communication with a CP server using TLSv1.2. However, to enable TLSv1.2 communication between the CP client and CP server after installing this hotfix, you must perform the following steps:

To configure TLSv1.2 for CP server
1. Stop the process resource that has pathname="/opt/VRTScps/bin/vxcpserv"
   # hares -offline <vxcpserv> -sys <sysname> 
2. Check that the vxcpserv daemon is stopped using the following command:
   # ps -eaf | grep "/opt/VRTScps/bin/vxcpserv"
3. When the vxcpserv daemon is stopped, edit the "/etc/vxcps_ssl.properties" file and make the following changes:
   a. Remove or comment the entry: openSSL.server.requireTLSv1 = true 
   b. Add a new entry: openSSL.server.requireTLSv1.2 = true
4. Start the process resource that has pathname="/opt/VRTScps/bin/vxcpserv"
   # hares -offline <vxcpserv> -sys <sysname>

To configure TLSv1.2 for CP Client
Edit the "/etc/vxcps_ssl.properties" file and make the following changes:
   a. Remove or comment the entry: openSSL.server.requireTLSv1 = true 
   b. Add a new entry: openSSL.server.requireTLSv1.2 = true

* 4067464 (Tracking ID: 4056666)

SYMPTOM:
The Error writing to database message may appear in syslogs intermittently on InfoScale CP servers.

DESCRIPTION:
Typically, when a coordination point server (CP server) is shared among multiple InfoScale clusters, the following messages may intermittently appear in syslogs:
CPS CRITICAL V-97-1400-501 Error writing to database! :database is locked.
These messages appear in the context of the CP server protocol handshake between the clients and the server.

RESOLUTION:
The CP server is updated so that, in addition to its other database write operations, all the ones for the CP server protocol handshake action are also synchronized.

Patch ID: VRTSvcsag-7.4.2.2500

* 4061462 (Tracking ID: 4044567)

SYMPTOM:
The HostMonitor agent faults while logging the memory usage of a system.

DESCRIPTION:
The HostMonitor agent runs in the background to monitor the usage of the resources of a system. It faults and terminates unexpectedly while logging the memory usage of a system and generates a core dump.

RESOLUTION:
This patch updates the HostMonitor agent to handle the issue that it encounters while logging the memory usage data of a system.

Patch ID: VRTSllt-7.4.2.2500

* 4046420 (Tracking ID: 3989372)

SYMPTOM:
When the CPU load and memory consumption is high in a VMware environment, some nodes in an InfoScale cluster may get fenced out.

DESCRIPTION:
Occasionally, in a VMware environment, the operating system may not schedule LLT contexts on time. Consequently, heartbeats from some of the cluster nodes may be lost, and those nodes may get fenced out. This situation typically occurs when the CPU load or the memory usage is high or when the VMDK snapshot or vMotion operations are in progress.

RESOLUTION:
This fix attempts to make clusters more resilient to transient issues by heartbeating using threads bound to every vCPU.

* 4057311 (Tracking ID: 4057310)

SYMPTOM:
After an InfoScale upgrade, the updated values of LLT tunables that are used when loading the corresponding modules fail to persist.

DESCRIPTION:
If the value of a tunable in /etc/sysconfig/llt is changed before an RPM upgrade, the change does not persist after the upgrade, and the tunable gets reset to the default value.

RESOLUTION:
The LLT module is updated so that its tunable parameters in /etc/sysconfig/llt can retain the existing values even after an RPM upgrade.

* 4067422 (Tracking ID: 4040261)

SYMPTOM:
During LLT configuration, if set-verbose is set to 1 in /etc/llttab, an lltconfig core dump is observed.

DESCRIPTION:
Some log messages may have IDs like 00000. When such logs are encountered, it may lead to a core dump by the lltconfig process.

RESOLUTION:
VCS is updated to use appropriate message IDs for logs so that such issues do not occur.

Patch ID: VRTSllt-7.4.2.2100

* 4039475 (Tracking ID: 4045607)

SYMPTOM:
LLT over UDP support for transmission and reception of data over 1500 MTU networks.

DESCRIPTION:
The UDP multiport feature in LLT performs poorly in case of 1500 MTU-based networks. Data packets larger than 1500 bytes cannnot be transmitted over 1500 MTU-based networks, so the IP layer fragments them appropriately for transmission. The loss of a single fragment from the set leads to a total packet (I/O) loss. LLT then retransmits the same packet repeatedly until the transmission is successful. Eventually, you may encounter issues with the Flexible Storage Sharing (FSS) feature. For example, the vxprint process or the disk group creation process may stop responding, or the I/O-shipping performance may degrade severely.

RESOLUTION:
The UDP multiport feature of LLT is updated to fragment the packets such that they can be accommodated in the 1500-byte network frame. The fragments are rearranged on the receiving node at the LLT layer. Thus, LLT can track every fragment to the destination, and in case of transmission failures, retransmit the lost fragments based on the current RTT time.

* 4046200 (Tracking ID: 4046199)

SYMPTOM:
LLT configurations over UDP accept only ethernet interface names as link tag names.

DESCRIPTION:
The tag field in the link definition accepts only the ethernet interface name as a value.

RESOLUTION:
The LLT module is updated to accept any string a as link tag name.

* 4046420 (Tracking ID: 3989372)

SYMPTOM:
When the CPU load and memory consumption is high in a VMware environment, some nodes in an InfoScale cluster may get fenced out.

DESCRIPTION:
Occasionally, in a VMware environment, the operating system may not schedule LLT contexts on time. Consequently, heartbeats from some of the cluster nodes may be lost, and those nodes may get fenced out. This situation typically occurs when the CPU load or the memory usage is high or when the VMDK snapshot or vMotion operations are in progress.

RESOLUTION:
This fix attempts to make clusters more resilient to transient issues by heartbeating using threads bound to every vCPU.

* 4056993 (Tracking ID: 4056991)

SYMPTOM:
Veritas Infoscale Availability (VCS) does not support SUSE Linux Enterprise Server
15 Service Pack 3 (SLES 15 SP3).

DESCRIPTION:
Veritas Infoscale Availability did not support SUSE Linux Enterprise Server
versions released after SLES 15 SP2.

RESOLUTION:
Veritas Infoscale Availability support for SUSE Linux Enterprise Server 15 SP3 is
now introduced.

Patch ID: VRTSllt-7.4.2.1600

* 4030881 (Tracking ID: 4022792)

SYMPTOM:
A cluster node panics during an FSS I/O transfer over LLT.

DESCRIPTION:
In a Flexible Storage Sharing (FSS) setup, LLT uses sockets to transfer data between nodes. If a remote node is rebooted while the FSS I/O is running on the local node, the socket that was closed as part of the reboot process may still be used. If a NULL socket is thus accidentally used by the socket selection algorithm, it results in a node panic.

RESOLUTION:
This hotfix updates the LLT module to avoid the selection of such closed sockets.

* 4030882 (Tracking ID: 4029253)

SYMPTOM:
LLT may not reuse the buffer slots on which NAK is received from the earlier RDMA writes.

DESCRIPTION:
On receiving the buffer advertisement after an RDMA write, LLT also waits for the hardware/OS ACK for that RDMA write. Only after the ACK is received, LLT sets the state of the buffers to free (usable). If the connection between the cluter nodes breaks after LLT receives the buffer advertisement but before receiving the ACK, the local node generates a NAK. LLT does not acknowledge this NAK, and so, that specific buffer slot remains unusable. Over time, the number of buffer slots in the unusable state increases, which sets the flow control for the LLT client. This conditions leads to an FSS I/O hang.

RESOLUTION:
This hotfix updates the LLT module to mark a buffer slot as free (usable) even when a NAK is received from the previous RDMA write.

* 4038113 (Tracking ID: 4038112)

SYMPTOM:
Veritas Infoscale Availability (VCS) does not support SUSE Linux Enterprise Server
15 Service Pack 2 (SLES 15 SP2).

DESCRIPTION:
Veritas Infoscale Availability did not support SUSE Linux Enterprise Server
versions released after SLES 15 SP1.

RESOLUTION:
Veritas Infoscale Availability support for SUSE Linux Enterprise Server 15 SP2 is
now introduced

Patch ID: VRTSllt-7.4.2.1300

* 4019535 (Tracking ID: 4018581)

SYMPTOM:
The LLT module fails to start and the system log messages indicate missing IP address.

DESCRIPTION:
When only the low priority LLT links are configured over UDP, UDPBurst mode must be disabled. UDPBurst mode must only be enabled when the high priority LLT links are configured over UDP. If the UDPBurst mode gets enabled while configuring the low priority links, the LLT module fails to start and logs the following error: "V-14-2-15795 missing ip address / V-14-2-15800 UDPburst:Failed to get link info".

RESOLUTION:
This hotfix updates the LLT module to not enable the UDPBurst mode when only the low priority LLT links are configured over UDP.

Patch ID: VRTSgab-7.4.2.2500

* 4057313 (Tracking ID: 4057312)

SYMPTOM:
After an InfoScale upgrade, the updated values of GAB tunables that are used when loading the corresponding modules fail to persist.

DESCRIPTION:
If the value of a tunable in  /etc/sysconfig/gab is changed before an RPM upgrade, the change does not persist after the upgrade, and the tunable gets reset to the default value.

RESOLUTION:
The GAB module is updated so that its tunable parameters in /etc/sysconfig/gab can retain the existing values even after an RPM upgrade.

Patch ID: VRTSgab-7.4.2.2100

* 4046415 (Tracking ID: 4046413)

SYMPTOM:
After a node is added to or removed from a cluster, the GAB node count or the fencing quorum is not updated.

DESCRIPTION:
The gabconfig -m <node_count> command returns an error even if the correct node count is provided.

RESOLUTION:
To address this issue, a parsing issue with the GAB module is fixed.

* 4046419 (Tracking ID: 4046418)

SYMPTOM:
The GAB module starts up even if LLT is not configured.

DESCRIPTION:
Since the GAB service depends on the LLT service, if LLT fails to start or if it is not configured, GAB should not start.

RESOLUTION:
The GAB module is updated to start only if LLT is configured.

* 4056994 (Tracking ID: 4056991)

SYMPTOM:
Veritas Infoscale Availability (VCS) does not support SUSE Linux Enterprise Server
15 Service Pack 3 (SLES 15 SP3).

DESCRIPTION:
Veritas Infoscale Availability did not support SUSE Linux Enterprise Server
versions released after SLES 15 SP2.

RESOLUTION:
Veritas Infoscale Availability support for SUSE Linux Enterprise Server 15 SP3 is
now introduced.

Patch ID: VRTSgab-7.4.2.1600

* 4038114 (Tracking ID: 4038112)

SYMPTOM:
Veritas Infoscale Availability (VCS) does not support SUSE Linux Enterprise Server
15 Service Pack 2 (SLES 15 SP2).

DESCRIPTION:
Veritas Infoscale Availability did not support SUSE Linux Enterprise Server
versions released after SLES 15 SP1.

RESOLUTION:
Veritas Infoscale Availability support for SUSE Linux Enterprise Server 15 SP2 is
now introduced

Patch ID: VRTSgab-7.4.2.1300

* 4013034 (Tracking ID: 4011683)

SYMPTOM:
The GAB module failed to start and the system log messages indicate failures with the mknod command.

DESCRIPTION:
The mknod command fails to start the GAB module because its format is invalid. If the names of multiple drivers in an environment contain the value "gab" as a substring, all their major device numbers get passed on to the mknod command. Instead, the command must contain the major device number for the GAB driver only.

RESOLUTION:
This hotfix addresses the issue so that the GAB module starts successfully even when other driver names in the environment contain "gab" as a substring.

Patch ID: VRTScavf-7.4.2.1400

* 4054857 (Tracking ID: 4035066)

SYMPTOM:
For better debugging of monitor and EP timeout events, improved instrumentation in the code.

DESCRIPTION:
For better debugging of monitor and EP timeout events, improved instrumentation in the code.

RESOLUTION:
N/A



INSTALLING THE PATCH
--------------------
Run the Installer script to automatically install the patch:
-----------------------------------------------------------
Please be noted that the installation of this P-Patch will cause downtime.

To install the patch perform the following steps on at least one node in the cluster:
1. Copy the patch infoscale-sles15_x86_64-Patch-7.4.2.2300.tar.gz to /tmp
2. Untar infoscale-sles15_x86_64-Patch-7.4.2.2300.tar.gz to /tmp/hf
    # mkdir /tmp/hf
    # cd /tmp/hf
    # gunzip /tmp/infoscale-sles15_x86_64-Patch-7.4.2.2300.tar.gz
    # tar xf /tmp/infoscale-sles15_x86_64-Patch-7.4.2.2300.tar
3. Install the hotfix(Please be noted that the installation of this P-Patch will cause downtime.)
    # pwd /tmp/hf
    # ./installVRTSinfoscale742P2300 [<host1> <host2>...]

You can also install this patch together with 7.4.2 base release using Install Bundles
1. Download this patch and extract it to a directory
2. Change to the Veritas InfoScale 7.4.2 directory and invoke the installer script
   with -patch_path option where -patch_path should point to the patch directory
    # ./installer -patch_path [<path to this patch>] [<host1> <host2>...]

Install the patch manually:
--------------------------
Manual installation is not recommended.


REMOVING THE PATCH
------------------
Manual uninstallation is not recommended.


KNOWN ISSUES
------------
* Tracking ID: 4061291

SYMPTOM: Vxconfigd daemon dump core during node join operation on any node

WORKAROUND: Workaround is to restart vxconfigd if HA is not available

* Tracking ID: 4067713

SYMPTOM: VVR replication is not working, as vxnetd does not start properly.

WORKAROUND: To avoid the race condition, the vxnetd start and stop functions are Synchronized.



SPECIAL INSTRUCTIONS
--------------------
NONE


OTHERS
------
NONE