I have 2 500gb crucial ssd's mirrored in a raid 1 cache pool. I keep everything updated, on the latest 6.9.2.

 

Everything was swimming along nicely until this morning when I updated Fix Common Problems, then went to CA and showed me that docker was disabled. I check things out and see that my cache drive is in read only mode, and one of the 2 SSDs was showing BTRFS errors to trigger this. I was confused why I would have any issues, if one drive had a problem, wouldn't the second be able to keep things afloat?

 

So I tried stopping the array, this way i can add a spare SSD to pool devices and copy the cache drive contents, then possibly drop BTRFS for XFS and run a single cache drive with scheduled backups. Stopping the array was getting hung up on unmounting the cache drive. i tried manually unmounting, but no joy. So I rebooted into safe mode and now both SSDs are showing as unmountable with no file system.

 

For the love of god, please tell me there's a way to recover the cache drive contents. I've been running a mirrored cache pool solely for the peace of mind that i have redundancy, how could this be happening? What can i do?

 

Please post the diagnostics.

4 minutes ago, JorgeB said:

Please post the diagnostics.

Attachedandrews-unraid-diagnostics-20220228-1258.zip

Mirror is for redundancy, it won't help with filesystem corruption which is the problem here, there are some recovery options here, see if you can backup anything important then re-format the pool and restore the data.

50 minutes ago, JorgeB said:

Mirror is for redundancy, it won't help with filesystem corruption which is the problem here, there are some recovery options here, see if you can backup anything important then re-format the pool and restore the data.

THANK YOU!!!

 

btrfs restore is doing the trick for me

Edited February 28, 20224 yr by [email protected]

51 minutes ago, JorgeB said:

Mirror is for redundancy, it won't help with filesystem corruption which is the problem here

 

for my new cache pool, would it make sense to run a single drive primary cache and schedule rsync on the entire drive to a secondary SSD pool, this way both drives are XFS, both drives have independent filesystems, and i could stop the array and hot swap the backup cache in case of failure. is this plausible or am i missing something?

For backups it would be much better, assuming the sync is done frequently enough.

roger that. thanks for your help. i almost had an anxiety attack

edit: i re-ran it and yea it appears to skip existing files pretty quickly

 

 

btrfs restore ran for a while but hit a not enough memory error.. not sure what to do next

 

would re-running skip over what's already restored?

 

Edited February 28, 20224 yr by [email protected]

12 hours ago, [email protected] said:

would re-running skip over what's already restored?

Not sure, you can try, or restore to a different path.