Split-brain situation due to fencing key issue, errors: V-11-1-VxFEN & V-11-1-12

Article:TECH168269  |  Created: 2011-08-28  |  Updated: 2012-07-28  |  Article URL http://www.symantec.com/docs/TECH168269
Article Type
Technical Solution


Environment

Issue



VCS will not start after server crashed (abnornal shutdown(.


Error



VXFEN INFO V-11-1-VxFEN configured at protocol version 10
GAB INFO V-15-1-20026 Port b gen 816603 k_jeopardy ;1
VXFEN WARNING V-11-1-12 Potentially a
preexisting split-brain.
Dropping out of cluster.


Solution



Need to clear fencing keys using the following example:

# vxfenadm -g /dev/rdsk/c2t0d19s2
Reading SCSI Registration Keys...
Device Name: /dev/rdsk/c2t0d19s2
Total Number Of Keys: 2 <<== 2 keys.
key[0]:
Key Value [Numeric Format]: 65,80,71,82,48,48,48,51
Key Value [Character Format]: APGR0003
key[1]:
Key Value [Numeric Format]: 65,80,71,82,48,48,48,51
Key Value [Character Format]: APGR0003


Create a file /tmp/disks as follows for the disks that have key:
/dev/rdsk/c2t0d19s2
/dev/rdsk/c2t0d27s2
/dev/rdsk/c2t0d23s2

Then try running the following comamnds on this file:
# /sbin/vxfenadm –a –k TMP –f /tmp/disks
# /sbin/vxfenadm –c –k TMP –f /tmp/disks


# /sbin/vxfenadm -a -k TMP -f /tmp/disks
Registration and Ignore completed for disk path: /dev/rdsk/c2t0d27s2
Registration and Ignore completed for disk path: /dev/rdsk/c2t0d19s2
Registration and Ignore completed for disk path: /dev/rdsk/c2t0d23s2


# /sbin/vxfenadm –c –k TMP –f /tmp/disks
Clear completed for disk path: /dev/rdsk/c2t0d19s2
Clear completed for disk path: /dev/rdsk/c2t0d23s2
Clear completed for disk path: /dev/rdsk/c2t0d27s2


Check if the keys exist:
# vxfenadm -g /dev/rdsk/c2t0d19s2
Reading SCSI Registration Keys...
Device Name: /dev/rdsk/c2t0d19s2
Total Number Of Keys: 0 <<== No keys.
No keys...

Manually started fencing:
# /etc/init.d/vxfen start

Then, started VCS:
# hastart




Article URL http://www.symantec.com/docs/TECH168269


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