Veritas Volume Manager 5.1 SP1 Troubleshooting Guide (5900-1507, April 2011)

See “Recovering a system by booting from a VxVM root disk mirror” on page 42.
See “Recovering a system by booting from recovery media” on page 42.
Recovering a system with VxVM boot disk under
native multi-pathing
If a system with VxVM boot disk under native multi-pathing is unable to boot,
boot the system from an alternate boot disk and use the following recovery
procedures.
Scenario 1
The system is unable to boot. The following messages are displayed on the console
or in syslog:
VxVM sysboot INFO : reading the krs value is successful value is 1
VxVM sysboot INFO V-5-2-3811 Starting in boot mode
To recover the system from such failure, where krs value is displayed as 1, boot
the system from an alternate boot disk and follow the steps given below:
1
# mkdir /mnt1
2
# fsck /dev/vx/dsk/dgname/rootvol
where dgname is the name of the diskgroup containing the affected boot disk.
3
# mount /dev/vx/dsk/dgname/rootvol /mnt1
4
# echo "/dev/disk/* foreign a block /dev/rdisk/* \
char" >> /mnt1/etc/vx/darecs
5
# umount /mnt1
6
Reboot the system
Scenario 2
The system is unable to boot from the VxVM boot disk under native multi-pathing.
Similar messages are displayed on the console or in syslog with krs value 0 :
VxVM sysboot INFO : reading the krs value is successful value is 0
47Recovering from boot disk failure
Recovering a system with VxVM boot disk under native multi-pathing