0005859: Bridge is disabled when bonded slave is disabled despite bond still being active

(0015535)
jlawer (reporter)
2012-07-25 00:52

Reproduced on second server. Unable to reproduce on Fedora 17.

(0015536)
jlawer (reporter)
2012-07-25 02:27

OK, I've installed kernel-ml from elrepo (Kernel 3.5) and has this fixed the issue, so while this is not ideal for me, I am going to use this as a workaround.

As such it is no longer a "major" severity for myself.

(0015541)
toracat (developer)
2012-07-25 16:03

@jlawer

If not already reported, could you try filing a new issue with the upstream bugzilla ( http://bugzilla.redhat.com [^] ) ? Mentioning your finding that kernel 3.5 does not have the same problem _might_ trigger investigation.

(0015542)
jlawer (reporter)
2012-07-25 21:15

Thanks @Toracat,

I did another search of the upstream bugzilla and have since found issue BZ 841983 which looks like this may have just been resolved in 2.6.32-279.2.1 (even though I thought I had re-tested under this).

I will try and reproduce today on this 2.6 kernel version and let you know the outcome.

(0015543)
jlawer (reporter)
2012-07-25 22:49

Sorry, I misread, this will be a patch post 2.6.32.279.2.1 currently targeting Z stream (ie 6.3.z).

I suppose as such there is nothing much to do except wait for this fix to land.

If anyone else finds this report you can grab the .diff from upstream bugzilla and rebuild a 2.6.32 kernel that will fix this issue. The issue is fixed by adding some code in the vlan driver which explicitly checks if its getting a NETDEV notify from a bonded slave and checks to see if another slave is active. If another slave is active the VLAN driver ignores the event.

(0015544)
toracat (developer)
2012-07-25 23:49

I think that the patch is a good candidate for the centosplus kernel.

jlawer, if I build a patched kernel, will you be able to test it? Which arch, i686 or x86_64?

(0015545)
jlawer (reporter)
2012-07-25 23:53

x86_64 mate, and yeah, I would be happy to use the test kernel on the two servers I have.

Thanks

(0015547)
toracat (developer)
2012-07-26 02:36

@jlawer

The patched kernel ( 2.6.32-279.2.1.bug5859.el6.centos.plus ) is now available at:

http://people.centos.org/toracat/kernel/6/plus/2.6.32-279.2.1.bug5859.el6.centos.plus/x86_64/ [^]

Please note that it is not signed. If you can confirm the patch resolves the issue, it will be included in the next release of the Cplus kernel.

(0015548)
jlawer (reporter)
2012-07-26 03:44

@toracat

The patched kernel worked on my test system. I will keep it running that kernel until there is a new release and report if there is any issues, but it's looking good.

(0015549)
toracat (developer)
2012-07-26 04:33

@jlawer

That's good news. Yes, please do update with anything you find.

(0015562)
toracat (developer)
2012-07-28 11:09

The patched kernel is now in:

http://people.centos.org/toracat/kernel/6/plus/2.6.32-279.2.1.bug5859bug5424.el6.centos.plus/ [^]

(0015674)
jlawer (reporter)
2012-08-17 12:34

This is now in the stock kernel-2.6.32-279.5.1.el6

[root@hydrogen etc]# rpm -q --changelog kernel | grep 841983
- [net] 8021q/vlan: filter device events on bonds (Neil Horman) [842429 841983]

Thanks toracat for the bug fix kernel, it helped keep my project going.

(0015678)
toracat (developer)
2012-08-17 14:25

You are welcome. Yes, they got this patch in very quickly upstream. Closing this report as 'resolved'.

Notes
(0015535) jlawer (reporter) 2012-07-25 00:52	Reproduced on second server. Unable to reproduce on Fedora 17.

(0015536) jlawer (reporter) 2012-07-25 02:27	OK, I've installed kernel-ml from elrepo (Kernel 3.5) and has this fixed the issue, so while this is not ideal for me, I am going to use this as a workaround. As such it is no longer a "major" severity for myself.

(0015541) toracat (developer) 2012-07-25 16:03	@jlawer If not already reported, could you try filing a new issue with the upstream bugzilla ( http://bugzilla.redhat.com [^] ) ? Mentioning your finding that kernel 3.5 does not have the same problem _might_ trigger investigation.

(0015542) jlawer (reporter) 2012-07-25 21:15	Thanks @Toracat, I did another search of the upstream bugzilla and have since found issue BZ 841983 which looks like this may have just been resolved in 2.6.32-279.2.1 (even though I thought I had re-tested under this). I will try and reproduce today on this 2.6 kernel version and let you know the outcome.

(0015543) jlawer (reporter) 2012-07-25 22:49	Sorry, I misread, this will be a patch post 2.6.32.279.2.1 currently targeting Z stream (ie 6.3.z). I suppose as such there is nothing much to do except wait for this fix to land. If anyone else finds this report you can grab the .diff from upstream bugzilla and rebuild a 2.6.32 kernel that will fix this issue. The issue is fixed by adding some code in the vlan driver which explicitly checks if its getting a NETDEV notify from a bonded slave and checks to see if another slave is active. If another slave is active the VLAN driver ignores the event.

(0015544) toracat (developer) 2012-07-25 23:49	I think that the patch is a good candidate for the centosplus kernel. jlawer, if I build a patched kernel, will you be able to test it? Which arch, i686 or x86_64?

(0015545) jlawer (reporter) 2012-07-25 23:53	x86_64 mate, and yeah, I would be happy to use the test kernel on the two servers I have. Thanks

(0015547) toracat (developer) 2012-07-26 02:36	@jlawer The patched kernel ( 2.6.32-279.2.1.bug5859.el6.centos.plus ) is now available at: http://people.centos.org/toracat/kernel/6/plus/2.6.32-279.2.1.bug5859.el6.centos.plus/x86_64/ [^] Please note that it is not signed. If you can confirm the patch resolves the issue, it will be included in the next release of the Cplus kernel.

(0015548) jlawer (reporter) 2012-07-26 03:44	@toracat The patched kernel worked on my test system. I will keep it running that kernel until there is a new release and report if there is any issues, but it's looking good.

(0015549) toracat (developer) 2012-07-26 04:33	@jlawer That's good news. Yes, please do update with anything you find.

(0015562) toracat (developer) 2012-07-28 11:09	The patched kernel is now in: http://people.centos.org/toracat/kernel/6/plus/2.6.32-279.2.1.bug5859bug5424.el6.centos.plus/ [^]

(0015674) jlawer (reporter) 2012-08-17 12:34	This is now in the stock kernel-2.6.32-279.5.1.el6 [root@hydrogen etc]# rpm -q --changelog kernel \| grep 841983 - [net] 8021q/vlan: filter device events on bonds (Neil Horman) [842429 841983] Thanks toracat for the bug fix kernel, it helped keep my project going.

(0015678) toracat (developer) 2012-08-17 14:25	You are welcome. Yes, they got this patch in very quickly upstream. Closing this report as 'resolved'.

Issue History
Date Modified	Username	Field	Change
2012-07-25 00:49	jlawer	New Issue
2012-07-25 00:52	jlawer	Note Added: 0015535
2012-07-25 02:27	jlawer	Note Added: 0015536
2012-07-25 16:03	toracat	Note Added: 0015541
2012-07-25 16:03	toracat	Status	new => acknowledged
2012-07-25 21:15	jlawer	Note Added: 0015542
2012-07-25 22:49	jlawer	Note Added: 0015543
2012-07-25 23:49	toracat	Note Added: 0015544
2012-07-25 23:53	jlawer	Note Added: 0015545
2012-07-26 02:36	toracat	Note Added: 0015547
2012-07-26 03:44	jlawer	Note Added: 0015548
2012-07-26 04:33	toracat	Note Added: 0015549
2012-07-28 11:09	toracat	Note Added: 0015562
2012-08-17 12:34	jlawer	Note Added: 0015674
2012-08-17 14:25	toracat	Note Added: 0015678
2012-08-17 14:26	toracat	Status	acknowledged => resolved
2012-08-17 14:26	toracat	Resolution	open => fixed

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