>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 [1] 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 < opensolarisisdeadlongliveopensola...@nedharvey.com> wrote: > > 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. > [1] 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 pool: data2 state: DEGRADED 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'. see: http://www.sun.com/msg/ZFS-8000-9P scan: scrub repaired 0 in 0h26m with 0 errors on Thu Jul 12 15:07:47 2012 config: 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. -- Ritchie > You'll be able to produce a list of all the partially-corrupted files. > Most > 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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