You may not want to mirror the boot block. That way you can update one
boot block, test it before copying the other. If the new boot block
fails to boot, the BIOS should go to the next hard drive and boot the
mirror. I don't know if it's possible to detect which drive you're
actually booting from to know for sure it worked though. A back up is
better than a mirror. With a mirror, you're more likely to fail to boot.
On 5/12/2013 12:26 PM, Paul Kraus wrote:
On May 12, 2013, at 9:48 AM, Outback Dingo <outbackdi...@gmail.com> wrote:
notice my boot pool is a mirror, so disk 2 is identical to disk1, so if
disk1 ever dies, logically i could boot from disk two
The zpool mirror does not mirror the bootblock. You need to manually
add that to all the drives you may want to boot from.
pool: tank
state: ONLINE
scan: scrub repaired 0 in 0h0m with 0 errors on Sat May 11 13:20:41 2013
config:
NAME STATE READ WRITE CKSUM
tank ONLINE 0 0 0
mirror-0 ONLINE 0 0 0
da34p3 ONLINE 0 0 0
da35p3 ONLINE 0 0 0
errors: No known data errors
--
Paul Kraus
Deputy Technical Director, LoneStarCon 3
Sound Coordinator, Schenectady Light Opera Company
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