Date: Wed, 5 Oct 2011 16:08:51 -0700 From: William Yardley <freebsd-questions@veggiechinese.net> To: questions@freebsd.org Subject: gmirror resync seems stalled Message-ID: <20111005230851.GD8202@mitch.veggiechinese.net>
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I had a drive which had some timeout problems, and got kicked out of a
gmirror based RAID1 on my FreeBSD machine (now 8.2-RELEASE-p3).
Normally, if the devices get out of sync, they rebuild relatively
quickly, and I can watch the progress.
This time, after running gmirror forget and inserting the device, it
just seems to sit at '0%', despite the fact that it's supposedly
synchronizing. I've tried removing and re-adding it a couple times, but
the behavior is the same. Am I just being too impatient?
Autosynchronization of stale components should have already been enabled
(and the gmirror list output says 'synchronizing'), but I tried a
"gmirror configure -a gm0" just in case.
Also, any opinions on how safe the '-F' option ("Do not synchronize
after a power failure or system crash") is?
Following:
# gmirror remove gm0 ad6
# gmirror forget gm0 ad6
# gmirror insert gm0 ad6
I see:
# gmirror list
Geom name: gm0
State: DEGRADED
Components: 2
Balance: round-robin
Slice: 4096
Flags: NONE
GenID: 4
SyncID: 1
ID: 506994055
Providers:
1. Name: mirror/gm0
Mediasize: 1000204885504 (932G)
Sectorsize: 512
Mode: r6w5e14
Consumers:
1. Name: ad10
Mediasize: 1000204886016 (932G)
Sectorsize: 512
Mode: r1w1e1
State: ACTIVE
Priority: 0
Flags: DIRTY
GenID: 4
SyncID: 1
ID: 3348119132
2. Name: ad6
Mediasize: 1000204886016 (932G)
Sectorsize: 512
Mode: r1w1e1
State: SYNCHRONIZING
Priority: 0
Flags: DIRTY, SYNCHRONIZING
GenID: 4
SyncID: 1
Synchronized: 0%
ID: 3439333064
and the status seems to just stay at 0%
relevant atacontrol output:
ATA channel 3:
Master: ad6 <WDC WD10EVDS-63U8B0/01.00A01> SATA revision 2.x
Slave: no device present
ATA channel 5:
Master: ad10 <WDC WD10EVDS-63U8B0/01.00A01> SATA revision 2.x
Slave: no device present
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