Hello,
I had an alert show up in FreeNAS UI so I took the liberty to do some digging. The UI indicated no issues outside of the dialog reporting that the ZFS volume status was UNKOWN even though the status in the UI for Storage said ONLINE. Anyway, I ran zpool status command in the shell and got this:
I figured, no issue there, let's run smart...and of course I got no errors. So I went ahead and scrubbed the data volume. Before this I was getting 50'ish MB/s and now I'm getting 18MB/s.
When I ran scrub, I waited until the system load was back to basically nothing and restarted the machine. Waited for load to drop again and started using the system. Performance is pretty sad now for a ZFS stripe.
I had an alert show up in FreeNAS UI so I took the liberty to do some digging. The UI indicated no issues outside of the dialog reporting that the ZFS volume status was UNKOWN even though the status in the UI for Storage said ONLINE. Anyway, I ran zpool status command in the shell and got this:
Code:
The volume Backup (ZFS) status is UNKNOWN: One or more devices has experienced an error resulting in data corruption. Applications may be affected.Restore the file in question if possible. Otherwise restore the entire pool from backup. pool: Backup state: ONLINE status: One or more devices has experienced an error resulting in data corruption. Applications may be affected. action: Restore the file in question if possible. Otherwise restore the entire pool from backup. see: http://www.sun.com/msg/ZFS-8000-8A scan: none requested config: NAME STATE READ WRITE CKSUM Backup ONLINE 1 0 0 gptid/6015bc9b-48ba-11e2-9622-0017314048ae ONLINE 0 0 0 gptid/60806027-48ba-11e2-9622-0017314048ae ONLINE 0 0 0 gptid/60e8525f-48ba-11e2-9622-0017314048ae ONLINE 0 0 0 gptid/6151e1af-48ba-11e2-9622-0017314048ae ONLINE 0 0 0 gptid/61b2f20a-48ba-11e2-9622-0017314048ae ONLINE 1 0 0 errors: Permanent errors have been detected in the following files: Backup/Backup:<0x6465e>
I figured, no issue there, let's run smart...and of course I got no errors. So I went ahead and scrubbed the data volume. Before this I was getting 50'ish MB/s and now I'm getting 18MB/s.
When I ran scrub, I waited until the system load was back to basically nothing and restarted the machine. Waited for load to drop again and started using the system. Performance is pretty sad now for a ZFS stripe.