Re: Does a failed separate ZIL disk mean the entire zpool is lost?

did you use two mirrored ZIL devices?

You can "zpool import -m", but you will probably be confronted with some
errors - you will probably lose the data the ZIL has not committed, but
most of your data in your pool should be there


On 09.09.24 17:51, andy thomas wrote:
> A server I look after had a 65TB ZFS RAIDz1 pool with 8 x 8TB hard disks
> plus one hot spare and separate ZFS intent log (ZIL) and L2ARC cache
> disks that used a pair of 256GB SSDs. This ran really well for 6 years
> until 2 weeks ago, when the main cooling system in the data centre where
> it was installed failed and the backup cooling system failed to start up.
>
> The upshot was the ZIL SSD went short-circuit across its power
> connector, shorting out the server's PSUs and shutting down the server.
> After replacing the failed SSD and verifying all the spinning hard disks
> and the cache SSD are undamaged, attempts to import the pool fail with
> the following message:
>
> NAME       SIZE  ALLOC   FREE  CKPOINT  EXPANDSZ   FRAG    CAP  DEDUP
> HEALTH  ALTROOT
> clustor2      -      -      -        -         -      -      -      -
> UNAVAIL  -
>
> Does this mean the pool's contents are now lost and unrecoverable?
>
> Andy
>