So while I'm still diving into the somewhat invasive changes to optimize some of the cloning all we might relaly need for your use case should be this: http://git.infradead.org/users/hch/block.git/shortlog/refs/heads/blk-clone-no-bdev Can you check if this helps you? -- dm-devel mailing list dm-devel@xxxxxxxxxx https://listman.redhat.com/mailman/listinfo/dm-devel
