I have a single-disk zpool that was temporarily removed without "zpool
export" to make space for some reallocation to a new disk. The system
was cleanly shut down before removal, but not exported. This disk was
using a device name such as "c11t0d0".
Subsequently, while writing to a new pool in the same disk position (but
a new disk and pool name), the system started to generate data
corruption errors for the removed pool, such as "pool10a: disk c11t0d0:
corrupt data" (wording may not match). So I tried to make the system
stop trying to access this pool, with "zpool destroy -f pool10a" and
this stopped the errors.
The problem, is that now the pool will not re-import because zpool
import says:
pool: pool10a
id: 11135625420108541132
state: UNAVAIL
status: One or more devices contains corrupted data.
action: The pool cannot be imported due to damaged devices or data.
see: http://illumos.org/msg/ZFS-8000-5E
config:
pool10a UNAVAIL insufficient replicas
c1t5000CCA266D6BC8Bd0 UNAVAIL corrupted data
It seems unlikely the disk is actually corrupt because it was physically
detached. At least unless the system has written some cached data after
reattachment, which also seems unlikely because it's not imported.
Is this an issue with zpool.cache or some other saved state, and if so
is this fixable? There have been other changes since this pool was last
mounted so I don't think I can just use an old cache file. Are there
other options, such as rebooting with the cache file nuked?
If this is not fixable I will nuke and re-create, but I would prefer to
get the disk back as-is if this is possible.
Thanks,
Hugh.
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