Re: Starting btrfs defrag with xargs -P 2 locks

On Fri, May 27, 2016 at 4:58 AM, Jérôme Poulin wrote: > I was de-fragmenting a BTRFS recently and it was quite slow, so I > decided to pipe find output to xargs -P 2 to speed up the file listing > process and found out it breaks BTRFS quite fast. In 2 minutes, I had > this

Starting btrfs defrag with xargs -P 2 locks

I was de-fragmenting a BTRFS recently and it was quite slow, so I decided to pipe find output to xargs -P 2 to speed up the file listing process and found out it breaks BTRFS quite fast. In 2 minutes, I had this in dmesg. As expected, btrfs command is deadlocked. btrfs-progs v4.2.2