Hi, I'm new to the list. I'm experimenting with the snapshot-merge target on a 2.6.33_rc4 kernel: echo 0 $(blockdev --getsize /dev/mapper/original) snapshot-merge /dev/mapper/original /dev/loop1 p 8 | dmsetup create mergeomatic where /dev/loop1 is a COW volume I created earlier (with the 'snapshot' target, against /dev/mapper/original, of course). I wait for some time and then I just 'dmsetup remove' to break down the device stack, starting with the 'mergeomatic' device. I then take a look at /dev/mapper/original, and, much to my delight, I see stuff that has been merged back in from the snapshot. But I don't know how to determine whether the merge has completed. I looked around in /proc and /sys, but those contained no obvious clues (not obvious to me, that is). My kernel logs never mention any dm activity (whereas the md driver is quite chatty and features /proc/mdstat). Any suggestions greatly appreciated. Regards, Wicher -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel