From: Dave Chinner <david@fromorbit.com>
To: Eric Sandeen <sandeen@sandeen.net>
Cc: xfs-oss <xfs@oss.sgi.com>
Subject: Re: Proposal/RFC: new metadata-specific UUID for V5 supers
Date: Thu, 30 Apr 2015 07:27:56 +1000 [thread overview]
Message-ID: <20150429212756.GW15810@dastard> (raw)
In-Reply-To: <5541253D.4090701@sandeen.net>
On Wed, Apr 29, 2015 at 01:38:53PM -0500, Eric Sandeen wrote:
> On 4/27/15 9:06 PM, Eric Sandeen wrote:
> > On 4/27/15 8:20 PM, Dave Chinner wrote:
> >
> >> I think that labels are a far better way of dealing with this
> >> problem. Get rid of the UUID mount checking (and hence the nouuid
> >> mount option), and tell people to use by-label instead of by-uuid to
> >> identify their filesystems when doing clones and snapshots. Labels
> >> make it much easier for humans to identify the filesystem than
> >> UUIDs...
> >
> > I suppose so. Withdrawn. ;)
>
> One more thought. ;)
>
> It'd be quite possible to keep defaults compatible with old kernels,
> and only set the new feature if/when a user requests a UUID change.
>
> If UUID changes are rare, it'll rarely matter; if they are required,
> it'll be possible. I might send a patch just to make the discussion
> a bit more concrete.
Yes, we have precedence for doing things like that - v2 inodes,
attr2, etc. See what you come up with ;)
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
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next prev parent reply other threads:[~2015-04-29 21:28 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-27 22:10 Proposal/RFC: new metadata-specific UUID for V5 supers Eric Sandeen
2015-04-27 23:37 ` Dave Chinner
2015-04-28 0:52 ` Eric Sandeen
2015-04-28 1:20 ` Dave Chinner
2015-04-28 1:35 ` Carlos E. R.
2015-04-28 1:42 ` Dave Chinner
2015-04-28 2:06 ` Eric Sandeen
2015-04-29 18:38 ` Eric Sandeen
2015-04-29 21:27 ` Dave Chinner [this message]
2015-04-30 4:50 ` [PATCH RFC 1/2] xfs: add sb_meta_uuid field to superblock Eric Sandeen
2015-04-30 5:07 ` Eric Sandeen
2015-04-30 4:55 ` [PATCH RFC 2/2] xfsprogs: add support for sb_meta_uuid Eric Sandeen
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