I have a pool composed of 8 1TB WD RE4 drives. The URE rate is <1 in 10 to the 15th. I am currently resilvering on of the mirrored vdevs. Since there is about a .8% or so chance that a URE will be encountered during a resilver, I'd like to know what happens.
With RAID 5, that typically means, total failure of the array and restoring from backup.
What happens with ZFS when using mirrored vdevs?
With RAID 5, that typically means, total failure of the array and restoring from backup.
What happens with ZFS when using mirrored vdevs?
Code:
cannot open '-v': name must begin with a letter pool: BIGPOOL state: DEGRADED status: One or more devices is currently being resilvered. The pool will continue to function, possibly in a degraded state. action: Wait for the resilver to complete. scan: resilver in progress since Mon Sep 23 09:21:33 2013 1.31T scanned out of 1.99T at 189M/s, 1h2m to go 331G resilvered, 65.94% done config: NAME STATE READ WRITE CKSUM BIGPOOL DEGRADED 0 0 0 mirror-0 DEGRADED 0 0 0 replacing-0 OFFLINE 0 0 0 10298620699599008217 OFFLINE 0 0 0 was /dev/gptid/52ce4171-1c89-11e3-9faa-002590c8d426 gptid/10c05dfc-2453-11e3-af2a-002590c8d426 ONLINE 0 0 0 (resilvering) gptid/532208dc-1c89-11e3-9faa-002590c8d426 ONLINE 0 0 0 mirror-1 ONLINE 0 0 0 gptid/6ea02f36-1c89-11e3-9faa-002590c8d426 ONLINE 0 0 0 gptid/6ef5b6b1-1c89-11e3-9faa-002590c8d426 ONLINE 0 0 0 mirror-2 ONLINE 0 0 0 gptid/9490bd8c-1c89-11e3-9faa-002590c8d426 ONLINE 0 0 0 gptid/94e51f13-1c89-11e3-9faa-002590c8d426 ONLINE 0 0 0 mirror-3 ONLINE 0 0 0 gptid/b70b61f6-1c89-11e3-9faa-002590c8d426 ONLINE 0 0 0 gptid/720a639f-2421-11e3-a39f-002590c8d426 ONLINE 0 0 0