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Well, I have been putting off upgrading to 14.04 for fear that I would break something. Actually for fear that it would break zfs (or I would break it). I am bascially slightly better than novice at linux.

Spent the last couple of hours trying to get the pool back. Now I am at the stage where I don't think I have a complete failure, but I am worried that I may break it. So if could help me not break it, and recover it, I would be thankful.

My zfs is file storage and not boot. It was working fine for a year and was working perfectly before the upgrade (scrub and everything was fine). I was confident that the upgrade would work (or at least I could fix it) because I had upgraded once in the past, the pool went missing, but I was able to get it back.

I have reinstalled zfs, zfs utilities, and some dependencies (after searching this forum)

I think what happened is 14.04 deleted some config file, or specified disk names differntly, but I could be wrong. When I set the pool up originally, I was using specific device Ids as I recall (because I did not want to break things if they got reassigned at boot)

So see if this helps.

I can confirm that old mountpoint folders are there but empty.

no talloc stackframe at ../source3/param/loadparm.c:4864, leaking memory

pool: naspool1 state: UNAVAIL status: One or more devices could not be used because the label is missing or invalid. There are insufficient replicas for the pool to continue functioning. action: Destroy and re-create the pool from a backup source. see: http://zfsonlinux.org/msg/ZFS-8000-5E scan: none requested config:

NAME                                           STATE     READ WRITE CKSUM
naspool1                                       UNAVAIL      0     0     0  insufficient replicas
  raidz1-0                                     UNAVAIL      0     0     0  insufficient replicas
    scsi-SATA_WDC_WD1001FALS-_WD-WMATV0990825  UNAVAIL      0     0     0
    scsi-SATA_WDC_WD1001FALS-_WD-WMATV2995365  UNAVAIL      0     0     0
    scsi-SATA_WDC_WD10EARS-00_WD-WMAV51894349  UNAVAIL      0     0     0


___@ourserver:~$ sudo zpool import naspool1
cannot import 'naspool1': a pool with that name is already created/imported,
and no additional pools with that name were found


___@ourserver:~$ sudo zfs list
 no datasets available

What other output can I post to help? I'm thinking the update deleted some zfs config files. It seems like the pool exists and certainly 3 perfectly working disks did not fail at once. I am worried that I may break something without a little bit of guideance.
Thanks.

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The problem is that after the upgrade zfs thinks that this is a different server. You should be able to fix it by simply exporting and then importing the pool.

sudo zpool export naspool1
sudo zpool import naspool1

Most likely the import will complain that the "pool may be in use by another system, use -f to import it anyway". Use -f to do the import:

sudo zpool import naspool1 -f
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