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Date: Tue, 16 Mar 2010 01:23:07 -0700
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From: Randy Bush <randy@psg.com>
To: Dan Naumov <dan.naumov@gmail.com>
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Cc: freebsd-fs@freebsd.org
Subject: Re: degraded zfs slowdown
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>> as the ghostly bad drive does not have a unique name, [how] can i tell
>> zfs to remove it for the moment?
> Have you tried running a scrub on the pool and THEN trying to offline
> and detach (zpool commands, not physical actions) the ghost drive?
psg.com:/root# zpool scrub tank
psg.com:/root# zpool status
pool: tank
state: DEGRADED
status: One or more devices could not be used because the label is missing or
invalid. Sufficient replicas exist for the pool to continue
functioning in a degraded state.
action: Replace the device using 'zpool replace'.
see: http://www.sun.com/msg/ZFS-8000-4J
scrub: scrub in progress for 0h0m, 0.00% done, 169h12m to go
config:
NAME STATE READ WRITE CKSUM
tank DEGRADED 0 0 0
mirror DEGRADED 0 0 0
twed1 FAULTED 0 3 0 corrupted data
twed1 ONLINE 0 0 0
errors: No known data errors
still do not know how to detach bad drive as it does not have a unique
name
randy
> Note: when adding the replacement drive, remember to ATTACH the drives
> together. If you ADD the new drive, you will end up with a stripe, not
> a mirror.
ack. thanks.
randy