improving NFS stability in next Debian release

improving NFS stability in next Debian release

[Daniel Pocock]

Hi all,

NFS was quite stable with previous Debian versions but in Jessie, the
current stable release, it has been prone to crashes under load (kernel
3.16, bug report[1]).  A user also asked[2] about this on the
linux-fsdevel list a few months ago.

With the next Debian release freeze approaching, what will it take to
ensure a stable experience for NFS users?

Are there any known problems for NFS in the current Debian kernel[3]?

Which version of nfs-utils should be distributed?  The current package
is quite old[4].

Debian jessie-backports contains a 4.7.9 kernel, should that be
compatible with the nfs-utils package v1.2.8 and other related things in
jessie?

Regards,

Daniel


1. http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=847549
2. http://www.spinics.net/lists/linux-fsdevel/msg98540.html
3. https://packages.qa.debian.org/l/linux.html
4. https://packages.qa.debian.org/n/nfs-utils.html

Re: improving NFS stability in next Debian release

[Daniel Pocock]

Brief update on this issue: nfs-utils 1.3.4 is now in Debian sid

There is discussion about changes (e.g. going from svcgssd to gss-proxy)
in this bug, if anybody could add any comments it would be very welcome

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=847681



On 11/12/16 20:01, Daniel Pocock wrote:
> 
> 
> Hi all,
> 
> NFS was quite stable with previous Debian versions but in Jessie, the
> current stable release, it has been prone to crashes under load (kernel
> 3.16, bug report[1]).  A user also asked[2] about this on the
> linux-fsdevel list a few months ago.
> 
> With the next Debian release freeze approaching, what will it take to
> ensure a stable experience for NFS users?
> 
> Are there any known problems for NFS in the current Debian kernel[3]?
> 
> Which version of nfs-utils should be distributed?  The current package
> is quite old[4].
> 
> Debian jessie-backports contains a 4.7.9 kernel, should that be
> compatible with the nfs-utils package v1.2.8 and other related things in
> jessie?
> 
> Regards,
> 
> Daniel
> 
> 
> 1. http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=847549
> 2. http://www.spinics.net/lists/linux-fsdevel/msg98540.html
> 3. https://packages.qa.debian.org/l/linux.html
> 4. https://packages.qa.debian.org/n/nfs-utils.html
> --
> To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 

Re: improving NFS stability in next Debian release

[J. Bruce Fields]

On Sun, Dec 11, 2016 at 08:01:12PM +0100, Daniel Pocock wrote:
> NFS was quite stable with previous Debian versions but in Jessie, the
> current stable release, it has been prone to crashes under load (kernel
> 3.16, bug report[1]).  A user also asked[2] about this on the
> linux-fsdevel list a few months ago.
> 
> With the next Debian release freeze approaching, what will it take to
> ensure a stable experience for NFS users?
> 
> Are there any known problems for NFS in the current Debian kernel[3]?
> 
> Which version of nfs-utils should be distributed?  The current package
> is quite old[4].
> 
> Debian jessie-backports contains a 4.7.9 kernel, should that be
> compatible with the nfs-utils package v1.2.8 and other related things in
> jessie?

We're pretty conservative about changes to the nfs-utils<->kernel
interfaces.  I wouldn't expect incompatibilites between versions only a
few years out of sync.

As for questions about known problems and stability of particular kernel
versions, sorry, I really don't have a simple answer.  I think it's
mainly a matter of investigating individual bug reports and keeping an
eye on upstream patches, especially anything marked for stable.

--b.

> 
> Regards,
> 
> Daniel
> 
> 
> 1. http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=847549
> 2. http://www.spinics.net/lists/linux-fsdevel/msg98540.html
> 3. https://packages.qa.debian.org/l/linux.html
> 4. https://packages.qa.debian.org/n/nfs-utils.html
> --
> To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html

Re: Bug#847681: improving NFS stability in next Debian release

[Ben Hutchings]

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On Wed, 2016-12-14 at 20:27 +0100, Daniel Pocock wrote:
> Brief update on this issue: nfs-utils 1.3.4 is now in Debian sid
[...]

But it's broken: https://bugs.debian.org/848145

This one looks stranger; may or may not be a regression:
https://bugs.debian.org/848115

Ben.

-- 
Ben Hutchings
The two most common things in the universe are hydrogen and stupidity.

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