Degraded zpool, Device Unavail

[Paulo]

Got a couple emails from my FreeNAS box saying my zpool is degraded. I'm not really sure where to go with this information. I'm very new still to FreeNAS. First the errors then my build:

Code:

Checking status of zfs pools:
NAME   SIZE  ALLOC   FREE    CAP  DEDUP  HEALTH  ALTROOT
RZ2   13.6T  6.20T  7.43T    45%  1.00x  DEGRADED  /mnt

  pool: RZ2
 state: DEGRADED
status: One or more devices could not be opened.  Sufficient replicas exist for
        the pool to continue functioning in a degraded state.
action: Attach the missing device and online it using 'zpool online'.
   see: http://illumos.org/msg/ZFS-8000-2Q
  scan: scrub repaired 0 in 4h28m with 0 errors on Sun Jan 26 04:28:13 2014
config:

        NAME                                            STATE     READ WRITE CKSUM
        RZ2                                             DEGRADED     0     0     0
          raidz2-0                                      DEGRADED     0     0     0
            gptid/834c1b82-68dd-11e3-b332-00259086cde4  ONLINE       0     0     0
            gptid/83cb96e8-68dd-11e3-b332-00259086cde4  ONLINE       0     0     0
            6555624091777250825                         UNAVAIL      0   105     0  was /dev/gptid/84a8a546-68dd-11e3-b332-00259086cde4
            gptid/85822bf2-68dd-11e3-b332-00259086cde4  ONLINE       0     0     0
            gptid/86290381-68dd-11e3-b332-00259086cde4  ONLINE       0     0     0

errors: No known data errors

dmesg: http://pastebin.com/raw.php?i=qsHxisqm

Kingston KVR16E11/8 8GB x2
Supermicro Motherboard X10SL7-F
Western Digital Red 3TB x4
Seagate Barracude 3TB x1
Seasonic Power Supply SSR-360GP 360W

FreeNAS 9.2

 

[jyavenard]

device connected to /dev/da1 is either dead or got disconnected.

I would reboot first, and if drive is still unavailable; get it replaced under warranty.

 

[Paulo]

The drive came back online after reboot, however now the chksum column is getting higher and higher (up to 709 after a few minutes)

 

[cyberjock]

You should do a scrub to bring the drive back in-sync with your pool. Also, you should run some SMART testing and look at the SMART info to see if the drive is failing. There's plenty of examples in the forums on how to do both of these things if you don't know how.