On 7/16/15 10:57 AM, Eric Sandeen wrote: > This adds a new superblock field, sb_meta_uuid. If set, along with > a new incompat flag, the code will use that field on a V5 filesystem > to compare to metadata UUIDs, which allows us to change the user- > visible UUID at will. Userspace handles the setting and clearing > of the incompat flag as appropriate, as the UUID gets changed; i.e. > setting the user-visible UUID back to the original UUID (as stored in > the new field) will remove the incompatible feature flag. > > If the incompat flag is not set, this copies the user-visible UUID into > into the meta_uuid slot in memory when the superblock is read from disk; > the meta_uuid field is not written back to disk in this case. > > The remainder of this patch simply switches verifiers, initializers, > etc to use the new sb_meta_uuid field. > > Signed-off-by: Eric Sandeen <sandeen@xxxxxxxxxx> This one was also Reviewed-by: Brian Foster <bfoster@xxxxxxxxxx> but again has small changes to address Dave's points, and rebase changes. THanks, -Eric _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
