Hey, all. I'm dealing with a potentially flaky 3Ware controller. Got seven 2 TB disks in a RAID-6. The BTRFS partition is a 9 TB partition. I've had to do a couple hard shutdowns on the system, and now I'm getting sporadic "Failed to read block groups" errors in dmesg: root@parsley:~# dmesg | egrep "Failed to read block groups:|btrfs" [ 27.184179] Failed to read block groups: -5 [ 27.295231] btrfs: open_ctree failed [ 2758.862565] Failed to read block groups: -5 [ 2758.896175] btrfs: ...