ZFS raidz device replacement problem

[Pawel Jakub Dawidek]

On Sun, Apr 15, 2007 at 10:38:46AM -0500, Barry Pederson wrote:
> But the thing that got me going on this was that if you *don't* do the scrub after the replace but instead do some other destructive things to one of the non-replaced 
> devices, like:
> 
>  dd if=/dev/random bs=1m count=64 oseek=1 conv=notrunc of=/tmp/foo1
> 
> and *then* do a scrub and then "zpool status -v mypool", you get this really alarming message mentioning data corruption.
> 
> ---------------------
> zpool status -v mypool
>   pool: mypool
>  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 with 184 errors on Sun Apr 15 09:55:43 2007
> config:
> 
>         NAME        STATE     READ WRITE CKSUM
>         mypool      ONLINE       0     0   761
>           raidz1    ONLINE       0     0   761
>             md0     ONLINE       0     0     0
>             md1     ONLINE       0     0   521
>             md3     ONLINE       0     0    25
> 
> errors: Permanent errors have been detected in the following files:
> 
>         mypool:<0x100>
>         mypool:<0x104>
>         mypool:<0x105>
>         .
>         .
> ---------------------
> 
> I suppose you have to actually have some files in /mypool for this to show up.
> 
> (are there supposed to be real filenames in the message instead of things like "<0x100>" ?)

I just committed a fix for 'zpool status -v'. It should now show
actually file names if corruption is related to file's data.

-- 
Pawel Jakub Dawidek                       http://www.wheel.pl
pjd at FreeBSD.org                           http://www.FreeBSD.org
FreeBSD committer                         Am I Evil? Yes, I Am!
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