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Zpool device weirdness

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Operating Systems Solaris Zpool device weirdness
# 1  
Old 06-02-2014
Zpool device weirdness
Weird duplicate device in one of my nested raidz1s - device is shown as both online and unavailable, with a hot spare showing up as degraded as well.

Any thoughts on how I should proceed?

Code:
root@storage# zpool status tank
  pool: tank
 state: DEGRADED
status: One or more devices are unavailable in response to persistent errors.
        Sufficient replicas exist for the pool to continue functioning in a
        degraded state.
action: Determine if the device needs to be replaced, and clear the errors
        using 'zpool clear' or 'fmadm repaired', or replace the device
        with 'zpool replace'.
        Run 'zpool status -v' to see device specific details.
  scan: resilvered 153G in 10h3m with 0 errors on Mon Feb 24 07:03:05 2014
config:

        NAME           STATE     READ WRITE CKSUM
        tank           DEGRADED     0     0     0
          raidz1-0     ONLINE       0     0     0
            c9t60d0    ONLINE       0     0     0
            c9t32d0    ONLINE       0     0     0
            c9t39d0    ONLINE       0     0     0
            c9t41d0    ONLINE       0     0     0
            c9t56d0    ONLINE       0     0     0
          raidz1-1     ONLINE       0     0     0
            c9t2d0     ONLINE       0     0     0
            c9t33d0    ONLINE       0     0     0
            c9t59d0    ONLINE       0     0     0
            c9t38d0    ONLINE       0     0     0
            c9t44d0    ONLINE       0     0     0
          raidz1-2     DEGRADED     0     0     0
            spare-0    DEGRADED     0     0     0
              c9t47d0  UNAVAIL      0     0     0
              c9t47d0  ONLINE       0     0     0
            c9t18d0    ONLINE       0     0     0
            c9t35d0    ONLINE       0     0     0
            c9t55d0    ONLINE       0     0     0
            c9t53d0    ONLINE       0     0     0
          raidz1-3     ONLINE       0     0     0
            c9t16d0    ONLINE       0     0     0
            c9t54d0    ONLINE       0     0     0
            c9t20d0    ONLINE       0     0     0
            c9t14d0    ONLINE       0     0     0
            c9t42d0    ONLINE       0     0     0
          raidz1-4     ONLINE       0     0     0
            c9t17d0    ONLINE       0     0     0
            c9t15d0    ONLINE       0     0     0
            c9t13d0    ONLINE       0     0     0
            c9t3d0     ONLINE       0     0     0
            c9t11d0    ONLINE       0     0     0
          raidz1-5     ONLINE       0     0     0
            c9t57d0    ONLINE       0     0     0
            c9t45d0    ONLINE       0     0     0
            c9t34d0    ONLINE       0     0     0
            c9t4d0     ONLINE       0     0     0
            c9t43d0    ONLINE       0     0     0
          raidz1-6     ONLINE       0     0     0
            c9t12d0    ONLINE       0     0     0
            c9t5d0     ONLINE       0     0     0
            c9t19d0    ONLINE       0     0     0
            c9t58d0    ONLINE       0     0     0
            c9t37d0    ONLINE       0     0     0
        logs
          mirror-7     ONLINE       0     0     0
            c7t2d0     ONLINE       0     0     0
            c7t3d0     ONLINE       0     0     0
        cache
          c7t4d0       ONLINE       0     0     0
          c7t5d0       ONLINE       0     0     0
        spares
          c9t49d0      INUSE   
          c9t50d0      AVAIL   
          c9t40d0      AVAIL

# 2  
Old 06-03-2014
Well backup first Smilie

Are your format/cfgadm/zpool/zfs commands working properly (not hanging or such?)

You might want to check out that disk using format (printing partitions and stuff - non destructive).

Check out zpool history <pool> for actions made on that zpool which might have caused it (if any), dmesg or messages should log i/o errors or path failures.

You can umount your zfs filesystems, export the pool, then import it in hope the error will go away Smilie
# 3  
Old 06-04-2014
Thanks for the suggestions! Much appreciated - I'll try these out later tonight.
# 4  
Old 06-12-2014
Follow up -

I can't get this zpool to export, even in single user mode. The pool contains three zfs filesystems, each of which contain a zfs iSCSI volume mounted on another server. The host that mounts these iSCSI volumes has been shut off so I can do maintenance on this host.

Should I just offline the offending device and have one of the newly added hot spares kick in? I'm out of ideas.
# 5  
Old 06-12-2014
Please provide error message which is displayed during export ?

Can you use zfs umount command on filesystems which are mounted before zpool export

Can you stop ISCSI target on server before exporting zpool ?

Regards
Peasant.
Last edited by Peasant; 06-12-2014 at 09:00 AM.. Reason: replaced target for initiator, mistake..
# 6  
Old 06-12-2014
I booted into single-user more hoping I could perform this command, but I get the same error.
Code:
root@storage:~# zpool export tank
cannot unmount '/tank': Device busy

When I try to do a zfs unmount on my three file systems in single user mode, I get this error:
Code:
root@storage:~# zfs unmount tank/disk2
cannot open 'tank/disk2': operation not applicable to datasets of this type

# 7  
Old 06-13-2014
Please check if ISCSI target service is running and stop it.
svcs -l iscsi/target
This is probably the reason you are getting the error that the pool is being used.

Then try to export the zpool and re-import it.

If you backuped the data, you can just try a simple reboot (since that will reimport the zpool)

Hope that helps
Regards
Peasant.
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