ZFS panic after replacing log device

Dan Langille dan at langille.org
Tue Nov 30 02:10:57 UTC 2010

On 11/16/2010 8:41 PM, Terry Kennedy wrote:
>> I would say it is definitely very odd that writes are a problem.  Sounds
>> like it might be a hardware problem.  Is it possible to export the pool,
>> remove the ZIL and re-import it?  I myself would be pretty nervous trying
>> that, but it would help isolate the problem?  If you can risk it.
>    I think it is unlikely to be a hardware problem. While I haven't run any
> destructive testing on the ZFS pool, the fact that it can be read without
> error, combined with ECC throughout the system and the panic always happen-
> ing on the first write, makes me think that it is a software issue in ZFS.
>    When I do:
> 	zpool export data; zpool remove data da0
>    I get a "No such pool: data". I then re-imported the pool and did:
> 	zpool offline data da0; zpool export data; zpool import data
>    After doing that, I can write to the pool without a panic. But once I
> online the log device and do any writes, I get the panic again.
>    As I mentioned, I have this data replicated elsewere, so I can exper-
> iment with the pool if it will help track down this issue.

Any more news on this?

Dan Langille - http://langille.org/

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