[Large copy/write on btrfs cache pool locking up server temporarily]

13 hours ago, dis3as3d said:

+1 on this, I'm hitting the same issue with 2x Samsung 970s in a btrfs cache pool as well.  Has anyone found any fixes?

Your setup is almost identical to mine. There was no fix other than removing one drive from the cache pool and reformatting to ZFS. Definitively a weird edge case.

[Large copy/write on btrfs cache pool locking up server temporarily]

59 minutes ago, deusxanime said:

 

Welcome to unRAID! It is a great system, sorry that your first experience as you are setting up is running into this year+ old bug that feels like it should have been resolved by now (considering Samsung is probably one of the most popular, if not the most popular, consumer SSD brand). Unfortunately it seems like some things get ignored/slip through the cracks, but for the most part it is really awesome. Kind of reminds me of Plex in that regard...

At least now I know what the issue is. I was running memtests all night and not finding anything.

[Large copy/write on btrfs cache pool locking up server temporarily]

Just ran into this issue myself. Setup two Samsung 970s In a btrfs cache pool. I was getting intermittent system hangs. Time to move all the data around and reformat to xfs unfortunately.