vxnotify - display Veritas Volume Manager configuration events

vxnotify [-ACScdefilmprsv] [-g diskgroup] [-n number ] [-t timeout] [-w wait-time]

The vxnotify utility displays events related to disk and configuration changes, as managed by the Veritas Volume Manager (VxVM) configuration daemon, vxconfigd. If vxnotify is running on a system where the VxVM cluster feature is active, it displays events related to changes in the cluster state of the system on which it is running. vxnotify displays requested event types until killed by a signal, until a given number of events have been received, or until a given number of seconds have passed.

Note: Master and Slave words are going to be deprecated in upcoming releases. We will refer to them using Primary and Secondary words respectively.

Each event is displayed as a single-line output record on the standard output.

added disk array da_serial_no
	The disk array with serial number da_serial_no is connected to the host.
change dg groupname dgid groupid
	A change was made to the configuration for the named disk group. The transaction ID for the update was groupid.
change disk accessname dm medianame dg groupname dgid groupid
	The disk header changed for the disk with a device access name of accessname. The disk group name and ID of the disk are groupname and groupid, respectively. The displayed groupname and groupid strings are ‘‘-’’ or blank if the disk is not currently in an imported disk group.
changed dg groupname from disk array disk_array_vendor
	The configuration of the disk group named groupname changed. This disk group contains disks which belong to the disk array of vendor disk_array_vendor.
connected	A connection was established with vxconfigd. This event type is displayed immediately after successful startup and initialization of vxnotify. A connected event is also displayed if the connection to vxconfigd is lost, and then regained. A connected event displayed after a reconnection indicates that some events may have been lost.
degraded volume volume dg groupname dgid groupid
	The RAID-5 volume has become degraded due to the loss of one subdisk in the raid5 plex of the volume. Accesses to some parts of the volume may be slower than to other parts depending on the location of the failed subdisk and the subsequent I/O patterns.
deport dg groupname dgid groupid
	The named disk group was deported.
detach disk accessname dm medianame dg groupname dgid groupid
	The named disk, with device access name accessname and disk media name medianame was disconnected from the named disk group as a result of an apparent total disk failure. Total disk failures are checked for automatically when plexes or subdisks are detached by kernel failures, or explicitly by the vxdisk check operation (see vxdisk(1M)).
detach plex plex volume volume dg groupname dgid groupid
	The named plex, in the named disk group, was detached as a result of an I/O failure detected during normal volume I/O, or disabled as a result of a detected total disk failure.
detach subdisk subdisk plex plex volume volume dg groupname dgid groupid
	The named subdisk, in the named disk group, was detached as a result of an I/O failure detected during normal volume I/O, or disabled as a result of a detected disk failure. Failures of a subdisk in a RAID-5 volume or a log subdisk within a mirrored volume result in a subdisk detach; other subdisk failures generally result in the subdisk’s plex being detached.
detach volume volume dg groupname dgid groupid
	The named volume, in the named disk group, was detached as a result of an I/O failure detected during normal volume I/O, or as a result of a detected total disk failure. Usually, only plexes or subdisks are detached as a result of volume I/O failure. However, if a volume would become entirely unusable by detaching a plex or subdisk, then the volume may be detached.
disabled controller controllername belonging to disk array da_serial_no
	The host controller controllername connected to the disk array with disk array serial number da_serial_no is disabled for I/O. As a result, DMP does not allow I/Os to any of the paths that are connected to this host controller.
disabled dg groupname dgid groupid
	The named disk group was disabled. A disabled disk group cannot be changed, and its records cannot be printed with vxprint. However, some volumes in a disabled disk group may still be usable, although it is unlikely that the volumes are usable after a system reboot. A disk group is disabled as a result of excessive failures. A disk group is disabled if the last disk in the disk group fails, or if errors occur when writing to all configuration and log copies in the disk group.
disabled dmpnode dmpnodename
	The DMP metanode dmpnodename is disabled. The disk/LUN represented by the DMP metanode is not available for I/O.
disabled path pathname belonging to dmpnode dmpnodename
	The path pathname is no longer available for I/O. It is a path to the disk/LUN represented by the DMP metanode dmpnodename.
disconnected
	The connection to vxconfigd was lost. This normally results from vxconfigd being stopped (such as by vxdctl stop) or killed by a signal. In response to a disconnection, vxnotify displays a disconnected event and then waits until a reconnection succeeds. A connected event is then displayed.
	A disconnected event is also printed if vxconfigd is not accessible at the time vxnotify is started. In this case, the disconnected event precedes the first connected event.
enabled controller controllername belonging to disk array da_serial_no
	The host controller controllername connected to the disk array with the disk array serial number da_serial_no is enabled. As a result DMP allows I/Os to all paths connected to this host controller.
Secondary: enabled dmpnode dmpnodename
	The DMP metanode dmpnodename is enabled on a Secondary node in Cluster Volume Manager (CVM). At least one of the paths to the disk/LUN represented by this DMP metanode is now available for I/O.
enabled path pathname belonging to dmpnode dmpnodename
	The path pathname is now available for I/O. It is a path to the disk/LUN represented by the DMP metanode dmpnodename.
export set on disk accessname
	The disk was exported for flexible storage sharing.
export set off disk accessname
	The disk was unexported from flexible storage sharing.
import dg groupname dgid groupid
	The disk group named groupname was imported. The disk group ID of the imported disk group is groupid.
joined cluster clustername as Primary node nodeid
	This system has joined the cluster named clustername as a Primary node. Its node ID is nodeid. If the system was already in the cluster as a Secondary, it has now become the Primary node. Available only if the VxVM cluster feature is enabled.
joined cluster clustername as Secondary node nodeid
	This system has joined the cluster named clustername as a Secondary node. Its node ID is nodeid. Available only if the VxVM cluster feature is enabled.
left cluster
	This system has left the cluster of which it was previously a member. Available only if the VxVM cluster feature is enabled.
log-detach volume volume dg groupname dgid groupid
	All log copies for the volume (either log plexes for a RAID-5 volume or log subdisks for a regular mirrored volume) have become unusable, either as a result of I/O failures or as a result of a detected total disk failure.
more events
	Due to internal buffer overruns or other problems, some events may have been lost.
removed disk array da_serial_no
	The disk array with serial number da_serial_no is disconnected from the host.
reconfiguration type:node-join;Primary-leave;Secondary-leave;
	The cluster has had a reconfiguration. The reconfiguration is one of the following types: node-join   one or more nodes have joined the cluster. Primary-leave   the Primary of the cluster has left the cluster. Secondary-leave   one or more Secondary nodes have left the cluster.
waiting ...	If the -w option is specified, a waiting event is displayed after a defined period with no other events. Shell scripts can use waiting messages to collect groups of nearly simultaneous, or at least related, events. This can make shell scripts more efficient. This can also provide some scripts with better input because sets of detach events, in particular, often occur in groups that scripts can relate together. This is particularly important given that a typical shell script blocks until vxnotify produces output, thus requiring output to indicate the end of a possible sequence of related events.

-A	Displays disk array state change events.
-C	Displays growth events for cache objects (used by space-optimized instant snapshots).
-S	Displays dmp node online events from a Secondary node in Cluster Volume Manager (CVM).
-c	Displays disk group change events.
-d	Displays disk change events.
-e	Displays extended events that relate to the creation, deletion, association, dissociation and other changes to objects.
-g diskgroup	Restricts displayed events to those in the indicated disk group. The disk group can be specified either as a disk group name or a disk group ID.
-f	Displays plex, volume, and disk detach events.
-i	Displays disk group import, deport, and disable events.
-l	Displays cluster reconfiguration events. -m Displays multipath events.
-n number	Displays the indicated number of vxconfigd events, then exit. Events that are not generated by vxconfigd (that is, connect, disconnect, and waiting events) do not count towards the number of counted events, and do not cause an exit to occur.
-p	Displays cluster communications protocol change events.
-r	Displays RLINK state change events.
-s	Displays cluster change events. If the -i option is also specified, the imports and deports of shared disk groups are displayed when a cluster change takes place. Available only if the VxVM cluster feature is enabled.
-t timeout	Displays events for up to timeout seconds, then exit. The -n and -t options can be combined to specify a maximum number of events and a maximum timeout to wait before exiting.
-v	Displays resynchronization state change events.
-w wait_time	Displays waiting events after wait_time seconds with no other events.

If none of the -A, -c, -d, -f, -i, -p, -r, -s, or -v options are specified, vxnotify defaults to printing all event types that correspond to these options.

If a disk group is specified with -g, vxnotify displays only events that are related to that disk group.

The following example shell script sends mail to root for all detected plex, volume, and disk detaches:

checkdetach() {
  d=‘vxprint -AQdF ’%name %nodarec’ | awk ’$2=="on" {print " " $1}’‘
  p=‘vxprint -AQpe ’pl_kdetach || pl_nodarec’ -F ’ %name’‘
  v=‘vxprint -AQvF ’ %name’ -e  "((any aslist.pl_kdetach==true) ||
   (any aslist.pl_nodarec)) &&
   !(any aslist.pl_stale==false)"‘


    if [ ! -z "$d" ] || [ ! -z "$p" ] || [ ! -z "$v" ]
    then
        (
            cat <<EOF
Failures have been detected by VxVM:
EOF
            [ -z "$d" ] || echo "\\nfailed disks:\\n$d"
            [ -z "$p" ] || echo "\\nfailed plexes:\\n$p"
            [ -z "$v" ] || echo "\\nfailed volumes:\\n$v"
        ) | mailx -s "VxVM failures" root
    fi
}


vxnotify -f -w 30 | while read code more
do
    case $code in
    waiting) checkdetach;;
    esac
done

The vxnotify utility exits with a non-zero status if an error is encountered while communicating with vxconfigd.

See vxintro(1M) for a list of standard exit codes.

vxconfigd(1M), vxdisk(1M), vxdmpadm(1M), vxintro(1M), vxtrace(1M)