From: Malahal Naineni <malahal@us.ibm.com>
To: linux-nfs@vger.kernel.org
Subject: Re: [PATCH/RFC 1/7] New mount option for volatile filehandle recovery
Date: Fri, 11 Nov 2011 19:35:20 -0800 [thread overview]
Message-ID: <20111112033520.GA15724@us.ibm.com> (raw)
In-Reply-To: <1321057177.8733.8.camel@lade.trondhjem.org>
Trond Myklebust [Trond.Myklebust@netapp.com] wrote:
> On Fri, 2011-11-11 at 18:04 -0500, Matthew Treinish wrote:
> > The new 'vfhretry' mount option will be used to enable the volatile filehandle
> > recovery routines in the client. On an expired filehandle recover the client
> > will attempt to recover by performing a lookup on the name of the file.
> >
> > This mechanism of recovery isn't necessarily safe for a posix filesystem so
> > using the mount option will allow the user to enable this at their own risk. If the mount option is not turned on, the FHEXPIRED error will be converted to
> > ESTALE.
>
> Either we handle NFS4ERR_FHEXPIRED, or we don't... What is the
> justification for wanting to turn this off on a per-mount basis?
VFH should work with read-only file systems. Is there a way to find if
the exported file system is read-only? If there is, Matt should use that
instead of using this mount option.
--Malahal.
next prev parent reply other threads:[~2011-11-12 3:36 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 [this message]
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
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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