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From: "J. Bruce Fields" <bfields@fieldses.org>
To: NeilBrown <neilb@suse.de>
Cc: Christoph Hellwig <hch@infradead.org>,
	Trond Myklebust <Trond.Myklebust@netapp.com>,
	Matthew Treinish <treinish@linux.vnet.ibm.com>,
	linux-nfs@vger.kernel.org
Subject: Re: [PATCH/RFC 0/7] Volatile Filehandle Client-side Support
Date: Sun, 13 Nov 2011 11:45:36 -0500	[thread overview]
Message-ID: <20111113164536.GC28574@fieldses.org> (raw)
In-Reply-To: <20111113164240.GB28574@fieldses.org>

On Sun, Nov 13, 2011 at 11:42:40AM -0500, J. Bruce Fields wrote:
> On Sun, Nov 13, 2011 at 02:54:00PM +1100, NeilBrown wrote:
> > So if you know the filesystem will only return FHEXPIRED for filehandles
> > belonging to files that cannot be renamed, then it is perfectly reasonable to
> > repeat the name lookup to re-access the file after the server forgets about
> > an old filehandle.  The mount option is how you communicate this knowledge,
> > because the RFC doesn't provide a way to communicate it.
> 
> What about http://tools.ietf.org/html/rfc5661#section-11.11
> STATUS4_FIXED?

Also, could a re-looked-up file be considered sufficiently safe to use
if all the attributes matched?

(I guess not: inode numbers, change attributes, etc., could agree by
coincidence, so it would never be completely reliable.)

--b.

  reply	other threads:[~2011-11-13 16:45 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-11-11 23:04 [PATCH/RFC 0/7] Volatile Filehandle Client-side Support Matthew Treinish
2011-11-11 23:04 ` [PATCH/RFC 1/7] New mount option for volatile filehandle recovery Matthew Treinish
2011-11-12  0:19   ` Trond Myklebust
2011-11-12  3:35     ` Malahal Naineni
2011-11-11 23:04 ` [PATCH/RFC 2/7] Added support for FH_EXPIRE_TYPE attribute Matthew Treinish
2011-11-11 23:04 ` [PATCH/RFC 3/7] Add VFS objects from nfs4_proc calls into nfs4_exception Matthew Treinish
2011-11-11 23:04 ` [PATCH/RFC 4/7] Save root file handle in nfs_server Matthew Treinish
2011-11-11 23:04 ` [PATCH/RFC 5/7] Added VFH FHEXPIRED recovery functions Matthew Treinish
2011-11-12  0:27   ` Trond Myklebust
2011-11-12  3:45     ` Malahal Naineni
2011-11-12 17:16       ` Trond Myklebust
2011-11-14 21:12         ` Matthew Treinish
2011-11-11 23:04 ` [PATCH/RFC 6/7] Perform recovery on both inodes for rename Matthew Treinish
2011-11-11 23:04 ` [PATCH/RFC 7/7] Added error handling for NFS4ERR_FHEXPIRED Matthew Treinish
2011-11-11 23:04 ` [PATCH/RFC] Hard code testing on server <ONLY FOR TESTING> Matthew Treinish
2011-11-12  0:13 ` [PATCH/RFC 0/7] Volatile Filehandle Client-side Support Trond Myklebust
2011-11-12 14:49   ` Christoph Hellwig
2011-11-13  3:54     ` NeilBrown
2011-11-13 13:45       ` Tigran Mkrtchyan
2011-11-13 16:36         ` J. Bruce Fields
2011-11-13 21:07           ` NeilBrown
2011-11-14  0:42             ` J. Bruce Fields
2011-11-14  1:26               ` NeilBrown
2011-11-14 17:27             ` Trond Myklebust
2011-11-15  6:33             ` Trond Myklebust
2012-01-13 17:09               ` Malahal Naineni
2012-01-14  1:38                 ` J. Bruce Fields
2012-01-16 16:52                   ` Malahal Naineni
2012-01-17 15:18                     ` J. Bruce Fields
2012-01-17 17:22                       ` Malahal Naineni
2012-01-17 18:47                         ` J. Bruce Fields
2012-01-17 19:43                           ` Malahal Naineni
2011-11-14 16:29         ` Trond Myklebust
2011-11-13 16:42       ` J. Bruce Fields
2011-11-13 16:45         ` J. Bruce Fields [this message]
2011-11-13 18:25           ` Matthew Treinish
2011-11-13 18:06       ` Matthew Treinish
2011-11-14  9:09         ` Tigran Mkrtchyan
2011-11-14 21:47           ` Matthew Treinish
2011-11-15  6:49         ` Trond Myklebust
2011-11-15 22:38           ` Matthew Treinish

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