The original question was:
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> Managers,
> I've installed Veritas on a Solaris 2.5.1 system. With the
software,
> I've mirrored the root disk. I am wondering what the procedure is
> for starting the machine back up after a root disk failure. Can the
> machine somehow automatically fail over to the mirror, or will it
> require some sort of manual intervention? If the machine will require
> someone rebooting it, what is the procedure? Is it as simple as a
> plain reboot, or is there more involved? Please detail. I will
> summarize.
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The answer below summarizes what's necessary to recover from a
root disk crash when the root disk has previously been mirrored via
Veritas.
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1. Determine the full path of the boot device and mirror device and copy
it
somewhere (or write down on the paper).
# ls -l /dev/dsk/root_disk (mirror_disk)
You will get the full path to the devices. It looks like this:
/sbus@2,0/SUNW,soc@d,10000/SUNW,pln@a0000000,837d04/ssd@0,0:a
2. shutdown the machine
3. In ok prompt set aliases:
ok nvalias <rootdisk> <path to the root device - long string>
ok nvalias <mirrordisk> <path to the mirror device>
ok nvstore /* store the info in NVRAM */
ok setenv auto-boot? false /* after reset not to boot the machine
*/
ok reset
ok devalias
You should see the aliases setup for your boot devices.
ok setenv boot-device <rootdisk> /* set a boot device */
ok setenv diag-device <rootdisk>
ok reset
ok devalias
You should see the boot devices set as rootdisk.
ok setenv auto-boot? true /* DO NOT FORGET THIS */
ok boot rootdisk
or
ok boot mirrordisk
Any of those should boot. I am not awared that you can setup the
mirror
to autoboot. You have to do it manualy if anything goes wrong with the
rootdisk.
Zivco Margetic
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