Bug#471062: ixp4xx: stalls and I/O errors when reading and writing via NFS

Package: linux-image-2.6.24-1-ixp4xx
Version: 2.6.24-4

I recently upgraded my NSLU2 from etch/arm to lenny/armel. I had no
problems throwing any amount of NFS traffic at it when I was on arm
(kernel linux-image-2.6.18-6-ixp4xx version 2.6.18.dfsg.1-18etch1), but
now that I'm on armel I get a lot of messages from nfsd in dmesg.

When reading:
nfsd: recvfrom returned errno 14

When writing:
nfsd: non-standard errno: -14

The read problem manifests as mplayer stalling every minute or so when
playing a movie from the NFS mount. The write problem manifests as cp
or mv reporting an I/O error for one or more files when I copy 40 or
50MB worth to the NFS mount.

Bug #404447 sounded similar and with the tcp_wmem sysctl setting
suggested therein applied mplayer behaves itself. However, the
recvfrom messages are still logged and writes still throw an I/O
error now and then.

The network setup is the NSLU2 and the client connected by wired
Ethernet to a Linksys WRT54GL.

--
Paul Collins
Wellington, New Zealand

Dag vijandelijk luchtschip de huismeester is dood



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* Paul Collins <paul@burly.ondioline.org> [2008-03-16 04:34]:[color=blue]
> Version: 2.6.24-4
>
> I recently upgraded my NSLU2 from etch/arm to lenny/armel. I had no
> problems throwing any amount of NFS traffic at it when I was on arm
> (kernel linux-image-2.6.18-6-ixp4xx version 2.6.18.dfsg.1-18etch1), but
> now that I'm on armel I get a lot of messages from nfsd in dmesg.[/color]

We changed the Ethernet driver used for the NSLU2 in 2.6.24, so it's
possible there are some regression compared to 2.6.18. Gordon, have
you seen this issue before?

[color=blue]
> When reading:
> nfsd: recvfrom returned errno 14
>
> When writing:
> nfsd: non-standard errno: -14
>
> The read problem manifests as mplayer stalling every minute or so when
> playing a movie from the NFS mount. The write problem manifests as cp
> or mv reporting an I/O error for one or more files when I copy 40 or
> 50MB worth to the NFS mount.
>
> Bug #404447 sounded similar and with the tcp_wmem sysctl setting
> suggested therein applied mplayer behaves itself. However, the
> recvfrom messages are still logged and writes still throw an I/O
> error now and then.
>
> The network setup is the NSLU2 and the client connected by wired
> Ethernet to a Linksys WRT54GL.
>
> --
> Paul Collins
> Wellington, New Zealand
>
> Dag vijandelijk luchtschip de huismeester is dood
>
>
>
> --
> To UNSUBSCRIBE, email to [email]debian-kernel-REQUEST@lists.debian.org[/email]
> with a subject of "unsubscribe". Trouble? Contact [email]listmaster@lists.debian.org[/email][/color]

--
Martin Michlmayr
[url]http://www.cyrius.com/[/url]


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* Paul Collins <paul@burly.ondioline.org> [2008-03-16 04:34]:[color=blue]
> I recently upgraded my NSLU2 from etch/arm to lenny/armel. I had no
> problems throwing any amount of NFS traffic at it when I was on arm
> (kernel linux-image-2.6.18-6-ixp4xx version 2.6.18.dfsg.1-18etch1), but
> now that I'm on armel I get a lot of messages from nfsd in dmesg.
>
> When reading:
> nfsd: recvfrom returned errno 14[/color]

OK, I can reproduce this with 2.6.24 on arm on a NSLU2. However, I
don't see it with 2.6.25-rc6.

Gordon, any idea how many changes there were between 2.6.24 and
2.6.25?
--
Martin Michlmayr
[url]http://www.cyrius.com/[/url]


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Hi Martin

On Tue, Mar 18, 2008 at 2:57 PM, Martin Michlmayr <tbm@cyrius.com> wrote:
[color=blue]
> OK, I can reproduce this with 2.6.24 on arm on a NSLU2. However, I
> don't see it with 2.6.25-rc6.
>
> Gordon, any idea how many changes there were between 2.6.24 and
> 2.6.25?[/color]

I'll have to check. I'll try to look into this before the weekend. I
should update the the network drive patch in 2.6.24 anyway to keep it
in sync with Krzysztof's tree.

Gordon

--
Gordon Farquharson
GnuPG Key ID: 32D6D676



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Hi Paul

On Sat, Mar 15, 2008 at 9:34 AM, Paul Collins <paul@burly.ondioline.org> wrote:[color=blue]
> Package: linux-image-2.6.24-1-ixp4xx
> Version: 2.6.24-4
>
> I recently upgraded my NSLU2 from etch/arm to lenny/armel. I had no
> problems throwing any amount of NFS traffic at it when I was on arm
> (kernel linux-image-2.6.18-6-ixp4xx version 2.6.18.dfsg.1-18etch1), but
> now that I'm on armel I get a lot of messages from nfsd in dmesg.[/color]

I added a patch to the Debian kernel subversion repository for sid.
Snapshots of the kernel are not built for arm, so I uploaded the
binary here [1]. Martin Michlmayr tested this version and reported
that he could not reproduce the problem. If possible, it would be
great if you could test the new kernel. The following link wil show
you the patch that was applied.

[url]http://svn.debian.org/wsvn/kernel/dists/sid/linux-2.6/debian/patches/bugfix/arm/ixp4xx-update-2.patch?op=file&rev=10959&sc=1[/url]

Gordon

[1] [url]http://fradharc.com/files/linux-image-2.6.24-1-ixp4xx_2.6.24-5_arm.deb[/url]
md5sum:
c16ad247db142be3e5b6c44441e45a81 linux-image-2.6.24-1-ixp4xx_2.6.24-5_arm.deb

--
Gordon Farquharson
GnuPG Key ID: 32D6D676



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Hi Gordon,

"Gordon Farquharson" <gordonfarquharson@gmail.com> writes:[color=blue]
> I added a patch to the Debian kernel subversion repository for sid.
> Snapshots of the kernel are not built for arm, so I uploaded the
> binary here [1]. Martin Michlmayr tested this version and reported
> that he could not reproduce the problem. If possible, it would be
> great if you could test the new kernel. The following link wil show
> you the patch that was applied.[/color]

I'm happy to test. However, the image you linked below is for arm, and
my system is armel.
[color=blue]
> [1] [url]http://fradharc.com/files/linux-image-2.6.24-1-ixp4xx_2.6.24-5_arm.deb[/url]
> md5sum:
> c16ad247db142be3e5b6c44441e45a81 linux-image-2.6.24-1-ixp4xx_2.6.24-5_arm.deb[/color]

--
Paul Collins
Wellington, New Zealand

Dag vijandelijk luchtschip de huismeester is dood



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Hi Paul

On Sun, Mar 23, 2008 at 4:56 PM, Paul Collins <paul@burly.ondioline.org> wrote:
[color=blue]
> I'm happy to test. However, the image you linked below is for arm, and
> my system is armel.[/color]

Ah! Sorry, my fault. I need to make an armel toolchain. I'll let you
know when I have built an armel version.

Gordon

--
Gordon Farquharson
GnuPG Key ID: 32D6D676



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Your message dated Thu, 27 Mar 2008 16:02:27 +0000
with message-id <E1JeuYd-0000eo-St@ries.debian.org>
and subject line Bug#471062: fixed in linux-2.6 2.6.24-5
has caused the Debian Bug report #471062,
regarding ixp4xx: stalls and I/O errors when reading and writing via NFS
to be marked as done.

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