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VXFENCONFIG (1M)
Maintenance Commands

Table of contents

NAME

vxfenconfig - Configure the vxfen driver used in I/O fencing.

SYNOPSIS

vxfenconfig -c [-s]

vxfenconfig -v

vxfenconfig -U

vxfenconfig -l

AVAILABILITY

VRTSvxfen

DESCRIPTION

The vxfenconfig command configures the vxfen driver using parameters found in /etc/vxfenmode file. For a list of possible parameters and usage information please see the manpage for /etc/vxfenmode file. If this file is omitted I/O Fencing defaults to SCSI3 functionality. When running in scsi3 mode, vxfenconfig command configures the vxfen driver using the coordinator disks listed in the /etc/vxfentab file. Disks must be listed by the full file name of the raw or DMP device. A minimum of three coordinator disks must be used (unless the -s option is specified to configure the driver); in total, an odd number of disks must be used.

OPTIONS

-c
Configure the vxfen driver.
[-s]
Configure the vxfen driver for use with only a single coordinator disk. The default (and Veritas recommendation) is three coordinator disks.
WARNING: When I/O fencing is configured to use only one coordinator disk, the loss of the single coordinator disk results in the loss of the availability of all applications in the cluster.
-U
Unconfigure the vxfen driver.
-l
List the coordinator disks used by vxfen driver.
-v
Print out the version information.

FILES

/etc/vxfentab
Contains the list of coordinator disks, each of which is identified by the full file name of the raw device. A minimum of three disks must be configured in normal cases (except in the case of the [-s] option). Multiple paths can also be listed. The /etc/vxfentab file is created by the rc script based on the contents of the /etc/vxfendg file. An example /etc/vxfentab file may contain the following lines:
For Solaris:
/dev/rdsk/c1t1d0s2 /dev/rdsk/c2t1d0s2 /dev/rdsk/c3t1d0s2
For Linux:
/dev/sdc /dev/sdd /dev/sde
For HP-UX:
/dev/rdsk/c1t1d0 /dev/rdsk/c2t1d0 /dev/rdsk/c3t1d0
For AIX:
/dev/rhdisk20 /dev/rhdisk21 /dev/rhdisk22
/etc/vxfendg
Contains the name of the disk group containing the coordinator disks. Typically, this disk group is vxfencoorddg. /etc/vxfendg must exist on each system in the cluster.

EXAMPLES

To run I/O Fencing in disabled mode, add the following line to /etc/vxfenmode
vxfen_mode=disabled
WARNING: Veritas does not support SFRAC clusters using I/O fencing in the disabled mode (vxfen_mode=disabled).
To run I/O Fencing in customized/sanvm mode, add the following lines to /etc/vxfenmode
vxfen_mode=customized vxfen_mechanism=sanvm

SEE ALSO

vxfenadm(1M), vxfentsthdw(1M), vxfendebug(1M), vxfenmode(4M), vxfenclearpre(1M)

Last updated: Jan 2009
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