[pca] zpool unavailable after Kernel Patch 142909-17

[Bleek Thomas]

Hello,

just a warning and perhaps a request for some advices.

We have a Sun StorEdge SE3510 connected to a V240. This Raid is used as JBOD (12 independend disks, 5x2 mirrored, 2 spares) for ZFS and Patch testings.
I have 2 pools, one on this array, another on 2 local scsi-disks.

After installing all current patches I can't mount the pool on the Raid, the local one works. The disks are seen with format, zpool status (actually zpool import) gives:
root at nftp:/>zpool import
  pool: tank
    id: 10696630212093874974
 state: UNAVAIL
status: The pool is formatted using an older on-disk version.
action: The pool cannot be imported due to damaged devices or data.
config:

        tank         UNAVAIL  insufficient replicas
          mirror-0   UNAVAIL  corrupted data
            c2t40d0  ONLINE
            c2t40d1  ONLINE
          mirror-1   UNAVAIL  corrupted data
            c2t40d3  ONLINE
            c2t40d2  ONLINE
          mirror-2   UNAVAIL  corrupted data
            c2t40d4  ONLINE
            c2t40d5  ONLINE
          mirror-3   UNAVAIL  corrupted data
            c2t40d6  ONLINE
            c2t40d7  ONLINE
          mirror-4   UNAVAIL  corrupted data
            c2t40d8  ONLINE
            c2t40d9  ONLINE
root at nftp:/>

2 things I have noticed:
1. The two spares have vanished (but they are seen with format)
2. The names of the submirros have changed, before the patch, they are all named simply "mirror".

I have still not done a "zpool upgrade" because I assume, that I will not able to mount on the older, unpatched system.

After booting into the old BE (thanks, Live Upgrade), the pool is online again.

So I tried to find the guilty patch with backing out patch for patch.
After backing out the kernel patch 142909-17 the problem has vanished but now I don't know how to proceed:-(

Any hints other than opening a case, which I will do after getting no responses?

TIA,
Thomas


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