On 2/6/18 12:11 AM, Dave Chinner wrote: > On Mon, Feb 05, 2018 at 04:37:22PM -0600, Eric Sandeen wrote: >> >> >> On 2/5/18 4:36 PM, Dave Chinner wrote: >>>> In retrospect I think we (I) should have left the "metadata" uuid as >>>> the one to match the log, not the user-facing one. >>> I suspect we can just change the log recovery code to accept either >>> sb_uuid or sb_metauuid if the metauuid feature bit is set and >>> change xfs_db to not rewrite the log when metauuid is used.... >>> >>> Cheers, >> >> That was my first thought, but then newer userspace UUID changes >> won't be mountable on older kernels. I don't think we can just >> change it w/o some thought re: compatibility... > > So maybe we should use a log incompat bit and provide an alternative > command for the old way of changing the UUID in the log? Sure, if we're happy burning an incompat bit for this, sounds good. -Eric -- To unsubscribe from this list: send the line "unsubscribe linux-xfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
