Date: Fri, 2 Dec 2016 17:20:41 -0800 From: Chris Stankevitz <chris@stankevitz.com> To: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: ZFS resilvering drive on an ONLINE and healthy pool Message-ID: <db149c98-5cb3-0f6c-514e-5a986f31661a@stankevitz.com>
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Hello,
I recently imported an 11 drive RAIDZ3 pool. For some reason, one of
the disks was unavailable (let's assume I didn't have it fully seated
when I inserted it).
Upon import, the pool was degraded with a missing disk (as expected). I
exported the pool within ~10 seconds of importing it. Nothing should
have attempted to read or write to the pool except for zfs itself.
Actually all ZFS filesystem in the pool are readonly (it is used for
backup).
I reseated the drive and imported again. Now I see the status below.
Note that:
1. The pool is ONLINE
2. All 11 drives are ONLINE
3. Apparently a resilver is in progress
4. The resilver is progressing at "1/s" (whatever that means).
Can anyone tell me what is going on? I assume that a mini-resilver took
place because one of the drives was unavailable for ~10 seconds, but I
would imaging that this would have completed rather quickly.
Thank you,
Chris
===
root@silver:/agp0/admin/scripts # zpool status agb0
pool: agb0
state: ONLINE
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 Sat Dec 3 00:06:38 2016
1 scanned out of 15.3T at 1/s, (scan is slow, no estimated time)
0 resilvered, 0.00% done
config:
NAME STATE READ
WRITE CKSUM
agb0 ONLINE 0
0 0
raidz3-0 ONLINE 0
0 0
diskid/DISK-%20%20%20%20%20WD-WMC4N0H9R07Y ONLINE 0
0 0
diskid/DISK-%20%20%20%20%20WD-WMC4N0H1PWSJ ONLINE 0
0 0
diskid/DISK-%20%20%20%20%20WD-WMC4N0K7CPYA ONLINE 0
0 0
diskid/DISK-%20%20%20%20%20WD-WMC4N0K59SFW ONLINE 0
0 0
diskid/DISK-%20%20%20%20%20WD-WMC4N0K458X4 ONLINE 0
0 0
diskid/DISK-%20%20%20%20%20WD-WMC4N0K43H7R ONLINE 0
0 0
diskid/DISK-%20%20%20%20%20WD-WMC4N0K6STAC ONLINE 0
0 0
diskid/DISK-%20%20%20%20%20WD-WMC4N0K4ZH7A ONLINE 0
0 0
diskid/DISK-%20%20%20%20%20WD-WMC4N0K6KWMT ONLINE 0
0 0
diskid/DISK-%20%20%20%20%20WD-WMC4N0K75F6V ONLINE 0
0 0
diskid/DISK-%20%20%20%20%20WD-WMC4N0K58HHT ONLINE 0
0 0
errors: No known data errors
root@silver:/agp0/admin/scripts #
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