Am Fri, 15 Jul 2016 13:24:45 +0800 schrieb Qu Wenruo <quwen...@cn.fujitsu.com>:
> > as for defrag, all my partitions are already on > > autodefrag, so I assume that should be good. Or is manual once in a > > while a good idea as well? > AFAIK autodefrag will only help if you're doing appending write. > > Manual one will help more, but since btrfs has problem defraging > extents shared by different subvolumes, I doubt the effect if you > have a lot of subvolumes/snapshots. "btrfs fi defrag" is said to only defrag metadata if you are pointing it to directories only without recursion. It could maybe help that case without unsharing the extents: find /btrfs-subvol0 -type d -print0 | xargs -0 btrfs fi defrag -- Regards, Kai Replies to list-only preferred. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
