search for: snapshot_autoextend_threshold

I've implemented a backups system and have come across a problem with delete-during and I/O errors. Currently I use a wrapper round rsync to create a LVM snapshot and rsync the snapshot, this works except that when the snapshot threshhold is exceeded LVM removes the snapshop, the mount fails and I/O errors happen. This is ok, except with delete-during I'm getting instances of rsync