[linux-lvm] Snapshot merge in the background?

[Phillip Susi]

Last night I tested out the new snapshot merge feature by taking a
snapshot, running a dist-upgrade, then lvconvert --merge.  After
rebooting, it merged the snapshot back into the origin, but it waited
for the merge to complete before finishing the boot.  Can't the merge be
completed in the background while the volume is mounted and the boot
continues?