Hi, > Some general notes .. VM images ... While NOCOW will prevent COW ... As mentioned the VM is configured to access the partition where linux is installed directly. So btrfs is not used as filesystem on the host machine, but rather on the guest which writes directly to disk (so no other filesystem is interfering here). > I'm not sure about fsck (presumably btrfsck), > but filefrag does not know about btrfs compression yet My bad, this was fsck from my ext2 boot partition ;) I wonder why my filesystem got so painfully slow after scrub. Is there any useful measure to determine how badly fragmented a btrfs volume is? Thanks and best regards, Clemens -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
