mdadm: Cannot get exclusive access to /dev/md3:Perhaps a running process, mounted filesystem or active volume group?

[framp]

Schade. Es kommt offensichtlich auf den genauen Fehler an. Hier hat es gottseidank funktioniert.

 

[DaveR]

btrfs scrub start -Bd <mountpoint> #start scrubbing
btrfs scrub status <mountpoint> # check scrubbing status

Ob Adminrechte ausreichen weiss ich nicht. Ich habe die Befehle als root abgesetzt.

You would need sudo to run btrfs the command.

I was going to ask what did you use for the <mountpoint> then I remembered I'd already done this 3 years ago and both /dev/md2 and /volume1 worked.

sudo btrfs scrub status <mountpoint>

works for checking if the scrub is still running.

To get more detailed information I'd use:

sudo btrfs scrub status -dR <mountpoint>

 

[framp]

was going to ask what did you use for the <mountpoint>

I used /volume3