Randomly the other day my parity drive just decided to go offline and is now marked as disabled and faulty in the UI. I ran the smart report from in the UI and there is no indication of any problem based on the results I am getting back. Is this just a data issue is there a procedure I should follow to recover or rebuild that drive?

You need to resync parity, to do that you need to re-enable the drive:

 

https://lime-technology.com/wiki/Troubleshooting#Re-enable_the_drive

 

P.S. it might be a good idea to post your diagnostics anyway, even if the disk is fine there could be other visible issues, like cable problems or a known problematic controller, etc.

Diagnostics attached. Thanks for the help! I will review that article. Unfortunately I am traveling and can't check for a cabling issue but it's in a hot swap sled so it would have had to come loose from the motherboard and the other connector is a locking connector so hopefully nothing fishy is happening.

glados-diagnostics-20180125-1744.zip

Everything looks fine, just resync parity, if you can I would still use a different hot swap bay (or swap with another disk) just to rule it out in case it happens again.

Going to hijack this thread as I have just had the exact same problem. 

I just got an email telling me my parity disk was in error state, now its marked with a red X, and I'm just trying to remain calm. 

 

Quick SMART check shows no issues. I booted into maintenance mode to do a filesystem check like @johnnie.black showed me for a previous issue, but this wasn't available for that disk(not sure if it's because of its parity or an error state). I also can not do a Parity-Check, only a Read-Check, which I think isn't including the parity disk. 

Am I correct in believing this can be caused in error, and I need to unmount and remount it and rebuild the parity drive?
 

tower-diagnostics-20180201-1134.zip

Disk looks fine, you need to re-enable the disk and resync parity, before doing that recommend swamping cables/backplane with a different disk to rule out cable issues if it happens again, then:

 

http://lime-technology.com/wiki/Troubleshooting#Re-enable_the_drive

thanks again @johnnie.black

20 hours ago, samtrois said:

Going to hijack this thread

Please don't make a habit of it.

I think I have a similar problem, this night a scheduled parity check was interrupted because of a disk error.

and now that disk is disabled.

 

I have checked the smart status of that disk and everything pass.

 

I have attached the diagnostic to inspect

thanks

 

 

by01-diagnostics-20180202-0935.zip

34 minutes ago, byographic said:

I think I have a similar problem, this night a scheduled parity check was interrupted because of a disk error.

and now that disk is disabled.

 

Likely a bad SATA cable:
 

199 UDMA_CRC_Error_Count    0x0032   200   200   000    Old_age   Always       -       17

 

Replace and rebuild.

 

 

2 minutes ago, johnnie.black said:

 

Likely a bad SATA cable:
 

199 UDMA_CRC_Error_Count    0x0032   200   200   000    Old_age   Always       -       17

 

Replace and rebuild.

 

 

thank you very much!