On Mon, Mar 18, 2013 at 04:13:57PM -0700, Darrick J. Wong wrote: > I realize dm-cache hasn't been in an upstream release yet, but could we add new > fields at the end of the disk superblock? Updated here: http://people.redhat.com/agk/patches/linux/editing/dm-cache-policy-change-version-from-string-to-integer-set.patch I presume this will now be compatible (just losing the hints the first time after updating the kernel)? > And after 3.9, maybe have some sort > of guard too? There's already a version number CACHE_VERSION. I would hope the space after the superblock is automatically filled with zeros. If not, that will need to be fixed too. Alasdair -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
