On Fri, Dec 03, 2010 at 05:45:26PM -0500, J. Bruce Fields wrote: > We're using statfs64.fs_fsid for this; I believe that's both stable > across reboots and distinguishes between subvolumes, so that's OK.
It's a field that doesn't have any useful specification and basically contains random garbage that a filesystem put into it. Using it is a very bad idea. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
