Date: Wed, 23 Apr 2014 14:00:42 +0200 From: Hugo Lombard <hal@elizium.za.net> To: Johan Hendriks <joh.hendriks@gmail.com> Cc: freebsd-fs@freebsd.org Subject: Re: ZFS unable to import pool Message-ID: <20140423120042.GK2830@sludge.elizium.za.net> In-Reply-To: <5357937D.4080302@gmail.com> References: <B493BD80-CDC2-4BA6-AC14-AE16B373A051@icloud.com> <20140423064203.GD2830@sludge.elizium.za.net> <B1024D84-EBBE-4A9B-82C4-5C19B5A66B60@icloud.com> <20140423080056.GE2830@sludge.elizium.za.net> <20140423091852.GH2830@sludge.elizium.za.net> <20140423100126.GJ2830@sludge.elizium.za.net> <5357937D.4080302@gmail.com>
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On Wed, Apr 23, 2014 at 12:18:37PM +0200, Johan Hendriks wrote:
>
> Did you in the past add an extra disk to the pool?
> This could explain the whole issue as the pool is missing a whole vdev.
>
I agree that there's a vdev missing...
I was able to "simulate" the current problematic import state (sans
failed "disk7", since that doesn't seem to be the stumbling block) by
adding 5 disks [1] to get to here:
# zpool status test
pool: test
state: ONLINE
scan: none requested
config:
NAME STATE READ WRITE CKSUM
test ONLINE 0 0 0
raidz1-0 ONLINE 0 0 0
md3 ONLINE 0 0 0
md4 ONLINE 0 0 0
md5 ONLINE 0 0 0
md6 ONLINE 0 0 0
md7 ONLINE 0 0 0
raidz1-2 ONLINE 0 0 0
md8 ONLINE 0 0 0
md9 ONLINE 0 0 0
md10 ONLINE 0 0 0
md11 ONLINE 0 0 0
md12 ONLINE 0 0 0
logs
md1s1 ONLINE 0 0 0
cache
md1s2 ONLINE 0 0 0
errors: No known data errors
#
Then exporting it, and removing md8-md12, which results in:
# zpool import
pool: test
id: 8932371712846778254
state: UNAVAIL
status: One or more devices are missing from the system.
action: The pool cannot be imported. Attach the missing
devices and try again.
see: http://illumos.org/msg/ZFS-8000-6X
config:
test UNAVAIL missing device
raidz1-0 ONLINE
md3 ONLINE
md4 ONLINE
md5 ONLINE
md6 ONLINE
md7 ONLINE
cache
md1s2
logs
md1s1 ONLINE
Additional devices are known to be part of this pool, though their
exact configuration cannot be determined.
#
One more data point: In the 'zdb -l' output on the log device it shows
vdev_children: 2
for the pool consisting of raidz1 + log + cache, but it shows
vdev_children: 3
for the pool with raidz1 + raidz1 + log + cache. The pool in the
problem report also shows 'vdev_children: 3' [2]
[1] Trying to add a single device resulted in zpool add complaining
with:
mismatched replication level: pool uses raidz and new vdev is disk
and trying it with three disks said:
mismatched replication level: pool uses 5-way raidz and new vdev uses 3-way raidz
[2] http://lists.freebsd.org/pipermail/freebsd-fs/2014-April/019340.html
--
Hugo Lombard
.___.
(o,o)
/) )
---"-"---
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