From: Neil Brown <neilb@suse.de>
To: Christoph Hellwig <hch@infradead.org>
Cc: Andreas Dilger <adilger@sun.com>, Theodore Tso <tytso@mit.edu>,
"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
viro@zeniv.linux.org.uk, corbet@lwn.net,
linux-fsdevel@vger.kernel.org, sfrench@us.ibm.com
Subject: Re: [PATCH -V3] Generic name to handle and open by handle syscalls
Date: Mon, 26 Apr 2010 21:16:13 +1000 [thread overview]
Message-ID: <20100426211613.33dc6076@notabene.brown> (raw)
In-Reply-To: <20100426102844.GA24515@infradead.org>
On Mon, 26 Apr 2010 06:28:44 -0400
Christoph Hellwig <hch@infradead.org> wrote:
> On Mon, Apr 26, 2010 at 08:16:33PM +1000, Neil Brown wrote:
> > uuids - as Ted as shown - are not necessarily unique (despite the name),
> > so using them to perform a lookup will either be imperfect (not good for a
> > kernel interface) or will impose extra uniqueness which would break current
> > configurations.
>
> UUID can easily be made unique. XFS for example refuses to mount
> filesystems with duplicate UUIDs.
>
In the email from Ted that I referred to he identified two cases where
UUIDs are not unique. Are you suggesting that we should cause those
use-cases - which work today - to fail?
NeilBrown
next prev parent reply other threads:[~2010-04-26 11:16 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-22 18:15 [PATCH -V3] Generic name to handle and open by handle syscalls Aneesh Kumar K.V
2010-04-22 18:15 ` [PATCH -V3 1/5] exportfs: Return the minimum required handle size Aneesh Kumar K.V
2010-04-22 18:15 ` [PATCH -V3 2/5] vfs: Add name to file handle conversion support Aneesh Kumar K.V
2010-04-22 18:15 ` [PATCH -V3 3/5] vfs: Add open by file handle support Aneesh Kumar K.V
2010-04-22 19:22 ` Andreas Dilger
2010-04-23 11:40 ` Aneesh Kumar K. V
2010-04-22 18:15 ` [PATCH -V3 4/5] x86: Add new syscalls for x86_32 Aneesh Kumar K.V
2010-04-22 18:15 ` [PATCH -V3 5/5] ext4: Add get_fsid callback Aneesh Kumar K.V
2010-04-22 19:07 ` [PATCH -V3] Generic name to handle and open by handle syscalls Andreas Dilger
2010-04-22 22:49 ` Serge E. Hallyn
2010-04-23 11:45 ` Aneesh Kumar K. V
2010-04-23 13:49 ` Serge E. Hallyn
2010-04-23 13:23 ` Theodore Tso
2010-04-24 0:19 ` Andreas Dilger
2010-04-24 1:08 ` Neil Brown
2010-04-25 18:21 ` Aneesh Kumar K. V
2010-04-26 9:56 ` Christoph Hellwig
2010-04-26 10:16 ` Neil Brown
2010-04-26 10:28 ` Christoph Hellwig
2010-04-26 11:16 ` Neil Brown [this message]
2010-04-26 14:53 ` Theodore Tso
2010-04-26 14:56 ` Christoph Hellwig
2010-04-25 18:07 ` Aneesh Kumar K. V
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