Hello All, I would like to implement such block device, which can store additional information along with the block data. For example. so if file system has 4k block, I would like to store 4k+256b of additional information... Can such block device be implemented with device mapper? Thank you, Dmitry -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel