Bug#782012: [PATCH] xfs_db: disallow sb UUID write on v5 filesystems

2015-04-07 Thread Brian Foster
On Mon, Apr 06, 2015 at 10:06:03AM -0500, Eric Sandeen wrote: > Do not allow xfs_db (or the xfs_admin frontend) to change the UUID > of a V5 filesystem; this will cause UUID mismatches across the > filesystem, and we currently have no mechanism to update them all. > Changing only the superblock UUI

Bug#782012: [PATCH] xfs_db: disallow sb UUID write on v5 filesystems

2015-04-06 Thread Eric Sandeen
Do not allow xfs_db (or the xfs_admin frontend) to change the UUID of a V5 filesystem; this will cause UUID mismatches across the filesystem, and we currently have no mechanism to update them all. Changing only the superblock UUID makes all other metadata look invalid, and xfs_repair reacts by junk