>How did you decide it is okay and that zfs saved you? Did you
>NOT post some further progress in your recovery?
I made no further recovery attempts, the pool imported cleanly after
rebooting, or so i thought  as a zpool status showed no errors and i
could read data from the drive again.
On Thu, Jul 12, 2012 at 2:35 PM, Edward Ned Harvey <
> > From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
> > boun...@opensolaris.org] On Behalf Of Jim Klimov
> > Purely speculating, I might however suggest that your disk was
> > dedicated to the pool completely, so its last blocks contain
> > spare uberblocks (zpool labels) and that might help ZFS detect
> > and import the pool -
> Certain types of data have multiple copies on disk. I have overwritten the
> first 1MB of a disk before, and then still been able to import the pool, so
> I suspect, with a little effort, you'll be able to import your pool again.
> After the pool is imported, of course, some of your data is very likely to
> be corrupt. ZFS should be able to detect it, because the checksum won't
> match. You should run a scrub.
 Ok i have run a scrub on the pool and is now being reported as being
in DEGRADED status again.
I did think it was strange that the zpool had magically recovered its self:
root@n36l:~# zpool status data2
status: One or more devices has experienced an unrecoverable error. An
attempt was made to correct the error. Applications are unaffected.
action: Determine if the device needs to be replaced, and clear the errors
using 'zpool clear' or replace the device with 'zpool replace'.
scan: scrub repaired 0 in 0h26m with 0 errors on Thu Jul 12 15:07:47 2012
NAME STATE READ WRITE CKSUM
data2 DEGRADED 0 0 0
c2t0d0s0 DEGRADED 0 0 0 too many errors
errors: No known data errors
At least it is letting me access data for now, i guess the only fix is to
migrate data off and then "rebuild" the disk.
> You'll be able to produce a list of all the partially-corrupted files.
> likely, you'll just want to rm those files, and then you'll know you have
> good files, whatever is still left.
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