ZFS Checksum errors

[Rich]

I can't speak for every case, but in my experience, that's what
happens if the corrupted data points to something that no longer
exists because it was deleted or similar - as an example I don't
recommend trying, you could figure out which on-disk blocks map to a
test file, scramble some of them beyond repair on enough disks to be
unrecoverable, do a scrub, and it'll report that file as lost - delete
the file, the reference will change to a pointer with no name.

- Rich

On Wed, Jun 20, 2012 at 5:17 PM, Steven Hartland
<killing at multiplay.co.uk> wrote:
> Sorry not seen that before I'm afraid. Maybe you can use zdb to get more info but sounds like something is causing nasty issues.
>
> I'd check your machine for bad hardware issues such as bad ram, cpu or cabling issues.
>
>    Regards
>    Steve
>  ----- Original Message -----
>  From: rondzierwa at comcast.net
>  To: Steven Hartland
>  Cc: freebsd-fs at freebsd.org
>  Sent: Wednesday, June 20, 2012 9:55 PM
>  Subject: Re: ZFS Checksum errors
>
>
>  Steve.
>
>  well, it got done, and it found another anonymous file with errors.  any idea how to get rid of these?
>
>  thanks,
>  ron.
>
>
>
>  phoenix# zpool status -v zfsPool
>    pool: zfsPool
>   state: ONLINE
>  status: One or more devices has experienced an error resulting in data
>          corruption.  Applications may be affected.
>  action: Restore the file in question if possible.  Otherwise restore the
>          entire pool from backup.
>     see: http://www.sun.com/msg/ZFS-8000-8A
>   scrub: scrub completed after 8h29m with 6276 errors on Wed Jun 20 16:18:01 2012
>  config:
>
>          NAME        STATE     READ WRITE CKSUM
>          zfsPool     ONLINE       0     0 6.17K
>            da0       ONLINE       0     0 13.0K  1.34M repaired
>
>  errors: Permanent errors have been detected in the following files:
>
>          zfsPool/raid:<0x9e241>
>          zfsPool/Build:<0x0>
>  phoenix#
>
>
>
>
>
> ------------------------------------------------------------------------------
>  From: "Steven Hartland" <killing at multiplay.co.uk>
>  To: rondzierwa at comcast.net, freebsd-fs at freebsd.org
>  Sent: Wednesday, June 20, 2012 1:58:20 PM
>  Subject: Re: ZFS Checksum errors
>
>  ----- Original Message -----
>  From: <rondzierwa at comcast.net>
>  ..
>
>  > zpool status indicates that a file has errors, but doesn't tell me its name:
>  >
>  > phoenix# zpool status -v zfsPool
>  > pool: zfsPool
>  > state: ONLINE
>  > status: One or more devices has experienced an error resulting in data
>  > corruption. Applications may be affected.
>  > action: Restore the file in question if possible. Otherwise restore the
>  > entire pool from backup.
>  > see: http://www.sun.com/msg/ZFS-8000-8A
>  > scrub: scrub in progress for 5h27m, 18.71% done, 23h42m to go
>
>  Try waiting for the scrub to complete and see if its more helpful after that.
>
>      Regards
>      Steve
>
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