From: Jim Rees <rees@umich.edu>
To: Peng Tao <bergwolf@gmail.com>
Cc: "Myklebust, Trond" <Trond.Myklebust@netapp.com>,
"Adamson, Andy" <William.Adamson@netapp.com>,
Christoph Hellwig <hch@infradead.org>,
linux-nfs@vger.kernel.org, peter honeyman <honey@citi.umich.edu>
Subject: Re: [PATCH v4 00/27] add block layout driver to pnfs client
Date: Wed, 3 Aug 2011 07:49:08 -0400 [thread overview]
Message-ID: <20110803114908.GA5453@merit.edu> (raw)
In-Reply-To: <CA+a=Yy6ajY+Te6ij3KTM0sNSf-jjFVubReqWLJ5UnN8cuhdidQ@mail.gmail.com>
Peng Tao wrote:
On Wed, Aug 3, 2011 at 10:38 AM, Jim Rees <rees@umich.edu> wrote:
> Myklebust, Trond wrote:
>
> Can you try to turn on the callback debugging ('echo 256 >
> /proc/sys/sunrpc/nfs_debug')? A wireshark trace of what is going on
> during the hang itself might also help.
>
> It doesn't fail with callback debugging turned on. I suspect the output to
> my slow serial console disrupts the timing.
>
> The trace is in
> http://www.citi.umich.edu/projects/nfsv4/pnfs/block/download/089.pcap
In frame 8785, client returned NFS4ERR_DELAY in response to
CB_SEQUENCE and the next RPC was 12s later. So it should be the case
that Trond mentioned above.
Yes, and there's some funny stuff earlier too. In frame 6381 the client
returns a delegation, then in 6387 the server tries to recall the same
delegation. Which I suppose is legal but I wonder why. This is followed by
another 12 sec delay.
next prev parent reply other threads:[~2011-08-03 11:49 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-28 17:30 [PATCH v4 00/27] add block layout driver to pnfs client Jim Rees
2011-07-28 17:30 ` [PATCH v4 01/27] pnfs: GETDEVICELIST Jim Rees
2011-07-28 17:30 ` [PATCH v4 02/27] pnfs: add set-clear layoutdriver interface Jim Rees
2011-07-28 17:30 ` [PATCH v4 03/27] pnfs: save layoutcommit lwb at layout header Jim Rees
2011-07-28 17:30 ` [PATCH v4 04/27] pnfs: save layoutcommit cred " Jim Rees
2011-07-28 17:30 ` [PATCH v4 05/27] pnfs: let layoutcommit handle a list of lseg Jim Rees
2011-07-28 18:52 ` Boaz Harrosh
2011-07-28 17:30 ` [PATCH v4 06/27] pnfs: use lwb as layoutcommit length Jim Rees
2011-07-28 17:30 ` [PATCH v4 07/27] NFS41: save layoutcommit cred in layout header init Jim Rees
2011-07-28 17:30 ` [PATCH v4 08/27] pnfs: ask for layout_blksize and save it in nfs_server Jim Rees
2011-07-28 17:30 ` [PATCH v4 09/27] pnfs: cleanup_layoutcommit Jim Rees
2011-07-28 18:26 ` Boaz Harrosh
2011-07-29 3:16 ` Jim Rees
2011-07-28 17:30 ` [PATCH v4 10/27] pnfsblock: add blocklayout Kconfig option, Makefile, and stubs Jim Rees
2011-07-28 17:31 ` [PATCH v4 11/27] pnfsblock: use pageio_ops api Jim Rees
2011-07-28 17:31 ` [PATCH v4 12/27] pnfsblock: basic extent code Jim Rees
2011-07-28 17:31 ` [PATCH v4 13/27] pnfsblock: add device operations Jim Rees
2011-07-28 17:31 ` [PATCH v4 14/27] pnfsblock: remove " Jim Rees
2011-07-28 17:31 ` [PATCH v4 15/27] pnfsblock: lseg alloc and free Jim Rees
2011-07-28 17:31 ` [PATCH v4 16/27] pnfsblock: merge extents Jim Rees
2011-07-28 17:31 ` [PATCH v4 17/27] pnfsblock: call and parse getdevicelist Jim Rees
2011-07-28 17:31 ` [PATCH v4 18/27] pnfsblock: xdr decode pnfs_block_layout4 Jim Rees
2011-07-28 17:31 ` [PATCH v4 19/27] pnfsblock: bl_find_get_extent Jim Rees
2011-07-28 17:31 ` [PATCH v4 20/27] pnfsblock: add extent manipulation functions Jim Rees
2011-07-28 17:31 ` [PATCH v4 21/27] pnfsblock: merge rw extents Jim Rees
2011-07-28 17:31 ` [PATCH v4 22/27] pnfsblock: encode_layoutcommit Jim Rees
2011-07-28 17:31 ` [PATCH v4 23/27] pnfsblock: cleanup_layoutcommit Jim Rees
2011-07-28 17:31 ` [PATCH v4 24/27] pnfsblock: bl_read_pagelist Jim Rees
2011-07-28 17:31 ` [PATCH v4 25/27] pnfsblock: bl_write_pagelist Jim Rees
2011-07-28 17:31 ` [PATCH v4 26/27] pnfsblock: note written INVAL areas for layoutcommit Jim Rees
2011-07-28 17:31 ` [PATCH v4 27/27] pnfsblock: write_pagelist handle zero invalid extents Jim Rees
2011-07-29 15:51 ` [PATCH v4 00/27] add block layout driver to pnfs client Christoph Hellwig
2011-07-29 17:45 ` Peng Tao
2011-07-29 18:44 ` Christoph Hellwig
2011-07-29 18:54 ` Jim Rees
2011-07-29 19:01 ` Christoph Hellwig
2011-07-29 19:13 ` Jim Rees
2011-07-30 1:09 ` Trond Myklebust
2011-07-30 3:26 ` Jim Rees
2011-07-30 14:25 ` Peng Tao
2011-08-01 21:10 ` Trond Myklebust
2011-08-01 22:35 ` Trond Myklebust
2011-08-01 22:57 ` Andy Adamson
2011-08-01 23:11 ` Trond Myklebust
2011-08-02 17:30 ` Trond Myklebust
2011-08-02 18:50 ` [PATCH v2 1/2] NFSv4.1: Fix the callback 'highest_used_slotid' behaviour Trond Myklebust
2011-08-02 18:50 ` [PATCH v2 2/2] NFSv4.1: Return NFS4ERR_BADSESSION to callbacks during session resets Trond Myklebust
2011-08-03 8:52 ` [PATCH v2 1/2] NFSv4.1: Fix the callback 'highest_used_slotid' behaviour Peng Tao
2011-08-02 2:21 ` [PATCH v4 00/27] add block layout driver to pnfs client Jim Rees
2011-08-02 2:29 ` Myklebust, Trond
2011-08-02 3:23 ` Jim Rees
2011-08-02 12:28 ` Trond Myklebust
2011-08-02 12:56 ` Jim Rees
2011-08-03 1:48 ` Jim Rees
2011-08-03 2:07 ` Myklebust, Trond
[not found] ` <2E1EB2CF9ED1CB4AA966F0EB76EAB4430A778AE2-hX7t0kiaRRrlMGe9HJ1VYQK/GNPrWCqfQQ4Iyu8u01E@public.gmane.org>
2011-08-03 2:11 ` Jim Rees
2011-08-03 2:38 ` Jim Rees
2011-08-03 8:43 ` Peng Tao
2011-08-03 11:49 ` Jim Rees [this message]
2011-08-03 11:53 ` Jim Rees
2011-08-03 13:59 ` Peng Tao
2011-08-03 14:11 ` Jim Rees
2011-07-30 14:18 ` Jim Rees
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