On Wed, May 09 2012 at 2:03am -0400, Busby <chaimvy@xxxxxxxxx> wrote: > I created pool without ignore_discard feature, is this the way to > enable discard? I mounted the ext4 with '--discard' args, I will trace > whether the ext4 really issue discard later. thin-pool's discard support (and discard passdown) are enabled by default. But again, if the underlying storage doesn't support discards you'll get this warning when you load the thin-pool's table: device-mapper: thin: Discard unsupported by data device: Disabling discard passdown. -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
