[ the previous message was eaten by mailing-list server, probably because it was too long, so I am reposting it without the patch. The patch is at the URL below. ] Hi This is patch for shared snapshots to be included in the next merge window. The patch only adds new modules dm_multisnapshot and dm_store_mikulas, it doesn't modify any existing code. It already works with userspace code. The disk format is supposed to be stable, there would be hopefully no more changes to it. The patch can be downloaded at http://people.redhat.com/mpatocka/patches/kernel/new-snapshots/r10/dm-multisnap-mikulas.patch Mikulas -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel