@johnavp1989 Hello again. Thanks for the update. This is purely in the btrfs realm now so not Rockstor specific: again as much info on the setup and raid levels / hw as possible may help forum members with assisting you.
btrfs fi show
btrfs fi df /mnt2/<poolname>
btrfs fi usage /mnt2/test-pool
Although my advise would be to first retrieve what data you require before proceeding with any repair / rebuild as the read only response is a typical fail over in btrfs on encountering issues and if they can’t be resolved your situation may deteriorate further.
@phillxnet Hello. Yes this does appear to be an issue with BTRFS or possibly an interaction between BTRFS and the HBAs. The other server that I removed RockStor from I booted up with Ubuntu 16.04an d created a BTRFS array and I have the same issue so clearly not a RockStor problem.
I’m a bit surprised since the HBA’s are SAS 2308’s in IT mode.