Today I had following problem:
After I had setup up a RAID 5 with a 3ware RAID controller (3ware Inc 9750), and format the entire disk with BTRFS and added some subvolumes, I wasn’t able to mount a single subvolume with the compress=lzo flag.
At first I tried to mount the partition through fstab, after that wasn’t successful, I tried to mount it from the command line, but neither worked.
I didn’t get an error or anything, but if when I list my mounts and grep for the mount, I see all defined flags, only the compress one is not there…
UUID=933fdfe1-a908-4ed9-b502-f5c107accf2e /mnt/data/users btrfs subvolid=261,noatime,nodiratime,autodefrag,compress=lzo,defaults 0 0
/dev/sdb on /mnt/data/users type btrfs (rw,noatime,nodiratime,space_cache,autodefrag,subvolid=261,subvol=/users)
So I thought I might try it with an external drive and see if that work, and it does! So it seams like its some problem with the RAID, maybe BTRFS compression works only with disks which are directly connected to the system?
Does anyone of you had a similar issue?
I didn’t find anything regarding this problem…