On Mon, Jun 29, 2015 at 4:37 PM, Carlos E. R. <carlos.e.r@opensuse.org> wrote:
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On 2015-06-29 23:48, Chris Murphy wrote:
btrfs-progs 4.1 now has a way to change the fs volume UUID. So after cloning if there is *any* possibility the two file systems will be visible to the kernel at the same time while one will be mounted, first it's best to change the UUID on one of them. This will take a while as the fs volume UUID is used constantly in the metadata format. In effect the whole fs (minus data) has to be read and written.
Rings a bell, I think I read about something similar on the XFS mail list. About XFS, of course.
You might be thinking of this bug where changing UUID on XFS v5 file systems destroys it. http://oss.sgi.com/archives/xfs/2015-04/msg00021.html This commit fixes that problem by disabling the change UUID feature in xfsprogs, and is found in xfsprogs 3.2.3 now. I don't know if this is temporary, or time line on making it v5 compatible. http://oss.sgi.com/cgi-bin/gitweb.cgi?p=xfs/cmds/xfsprogs.git;a=commit;h=609... -- Chris Murphy -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org