On 17/02/2020 14:17, Hugo Mills wrote: > On Mon, Feb 17, 2020 at 03:12:35PM +0100, Menion wrote: >> ok thanks >> I have launched it (in a tmux session), after 5 minutes the command >> did not return yet, but dmesg and btrfs balance status >> /array/mount/point report it in progress (0%). >> Is it normal? > > Yes, it's got to rewrite all of your metadata. This can take a > while (especially if you have lots of snapshots or reflinks -- such as > from running a deduper). You should be able to see progress happening > fairly regularly in dmesg. This is typically one chunk every minute or > so, although some chunks can take much *much* longer. Also, you can watch what is happening by using "btrfs filesystem usage /your/mount/point". You should see "Metadata,RAID5:" going down and "Metadata,RAID1" going up. I often leave: watch -n 10 btrfs fi usage /mount/point running in a window while doing these sorts of things so I can see how things are going at a glance.
