zpool not visible in web gui

[TheAbyssDragon]

I have a 7 disk raidz2 built from a mix of 2.0 TB WD Blacks and Seagate Barracudas on FreeNAS-9.3-STABLE-201502162250. Unfortunately the system is all consumer grade, but I do have proper backups in case of catastrophic failure.

On Monday I had a double drive failure (one drive failure probably happened last week and went unnoticed) and a third drive throwing errors. Somehow this caused an error in the web gui saying that the size of the zpool could not be determined, so I detached the volume and proceeded to the command line.

I've since imported the zpool, replaced both faulty disks, and am in the process of scrubbing the pool now. See my "zpool status -v" below. The disk with cksum errors is the third disk that is going bad, I should have a replacement for it soon.

Code:

  pool: zpool1
state: ONLINE
status: One or more devices has experienced an unrecoverable error.  An
        attempt was made to correct the error.  Applications are unaffected.
action: Determine if the device needs to be replaced, and clear the errors
        using 'zpool clear' or replace the device with 'zpool replace'.
   see: http://illumos.org/msg/ZFS-8000-9P
  scan: scrub in progress since Thu Apr 30 09:29:29 2015
        576G scanned out of 6.96T at 257M/s, 7h14m to go
        0 repaired, 8.09% done
config:

        NAME                                            STATE     READ WRITE CKSUM
        zpool1                                          ONLINE       0     0     0
          raidz2-0                                      ONLINE       0     0     0
            gptid/82898f22-c26e-11e4-ab59-fcaa1484a02d  ONLINE       0     0     0
            gptid/b4246a42-d05f-4811-9714-6f91f84f62fb  ONLINE       0     0     0
            gptid/35cc7cb5-18f4-11e4-a47e-1c6f655a6c78  ONLINE       0     0   267
            gptid/79f68319-7194-11e4-a5ec-1c6f655a6c78  ONLINE       0     0     0
            gptid/2c083ccc-6aa7-11e4-a073-1c6f655a6c78  ONLINE       0     0     0
            gptid/36c7b08d-18f4-11e4-a47e-1c6f655a6c78  ONLINE       0     0     0
            gptid/3724190c-18f4-11e4-a47e-1c6f655a6c78  ONLINE       0     0     0

errors: No known data errors

I can mount/unmount the various datasets and interact with all of the files. However, the zpool doesn't show in the web gui under storage. Instead I get "No entry has been found". If I try to auto-import, the drop down is blank; I'm guessing this is because the volume has already been imported.

How do I get my zpool to show in the web gui again?

 

[SweetAndLow]

export your pool then use the gui to import or just reboot should fix the issue. How did a drive failure go unnoticed? You should get emails when this happens.

 

[Bidule0hm]

I guess you've imported the zpool from the CLI.

So, export it from the CLI and then import it from the GUI.

 

[TheAbyssDragon]

I had already tried rebooting, it did not fix the issue. However, exporting from CLI then importing in the GUI did the trick. Thank you for the assistance.

I haven't been able to get the email function working. Perhaps an issue for another thread.

EDIT: Follow up question, it appears to have forgotten all of my CIFS shares. Any easy way to recover them, or do I need to set them back up from scratch?

 

[Bidule0hm]

If you've done a backup of the config file (it's recommended to do so regularly) you can upload it to restore your last config (then you'll need to fix the email again).

 

[L]

3 disk failures in a week would point me toward a controller failure rather than disks. I also would wait for the scrub to complete before I did anything..