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uisge
March 16th, 2009, 20:16
Hi -

I do run a mirror made from /dev/da4 and /dev/da6.

Two hours ago smartd started to throw the following error messages:

smartd[787]: Device: /dev/ad6, 1 Currently unreadable (pending) sectors
smartd[787]: Device: /dev/ad6, 1 Offline uncorrectable sectors


Well, and gmirror tells me:

me> gmirror status
Name Status Components
mirror/gm0 DEGRADED ad4



me> gmirror list
Geom name: gm0
State: DEGRADED
Components: 2
Balance: round-robin
Slice: 4096
Flags: NONE
GenID: 1
SyncID: 1
ID: 1798641043
Providers:
1. Name: mirror/gm0
Mediasize: 500107861504 (466G)
Sectorsize: 512
Mode: r6w6e7
Consumers:
1. Name: ad4
Mediasize: 500107862016 (466G)
Sectorsize: 512
Mode: r1w1e1
State: ACTIVE
Priority: 0
Flags: DIRTY
GenID: 1
SyncID: 1
ID: 674613560


Hmm, consumer 2 is gone :-(

Then I did try to re-insert /dev/da6:

me> me> gmirror insert gm0 /dev/ad6
gmirror: Not all disks connected.


Even a ...

me> gmirror rebuild gm0 /dev/ad6
gmirror: No such provider: /dev/ad6.

... didn't help me.

I do not have physical access to that machine (re-located).

What would you propose to do next? And, I really do appreciate every hint to literature, FAQs, and alike.

Thanks.
uisge
March 16th, 2009, 20:37
I forgot to show:

me> grep -i GEOM /var/log/messages
Mar 16 03:01:37 <kern.crit> enfer-du-nord kernel: GEOM_MIRROR: Request failed (error=5). ad6[READ(offset=99604004352, length=131072)]
Mar 16 03:01:37 <kern.crit> enfer-du-nord kernel: GEOM_MIRROR: Device gm0: provider ad6 disconnected.
uisge
March 16th, 2009, 21:26
What would you propose to do next?
And, I really do appreciate every hint to literature, FAQs, and alike.


Ok, I did manage to re-add that disk into the raid, and it is currently rebuilding.

JFTR:

me> gmirror forget gm0

me> gmirror status
Name Status Components
mirror/gm0 COMPLETE ad4

me> gmirror remove gm0 /dev/ad6
gmirror: No such provider: ad6.

me> gmirror insert gm0 /dev/ad6

me> gmirror status
Name Status Components
mirror/gm0 DEGRADED ad4
ad6 (0%)


Well, I'll see in a couple of hours/days if that disk will fail again.