On Fri, Jan 18, 2013 at 11:43:34PM +0200, Kasatkin, Dmitry wrote: > This patch I sent out has one missing feature what I have not pushed yet. > In the case of non-matching blocks, it just zeros blocks and returns > no error (zero-on-mismatch). > Writing to the block replaces the hmac. > It works quite nicely. mkfs and fsck is able to read and write/fix the > filesystem. > In normal environment, if fsck crashes, it might corrupt file system > in the same way. > zero-on-mismatch makes block device still accessible/fixable for fsck. I'm afraid I don't buy that. We can hardly call this "integrity" if it's designed to lose some of your data when the machine crashes - and worse - it doesn't tell you what you lost, but just gives you blocks of zeroes instead! I think a redesign is needed before this goes upstream. Alasdair -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
