This bug was fixed in the package linux - 2.6.35-28.49
---
linux (2.6.35-28.49) maverick-proposed; urgency=low
[ Brad Figg ]
* Release Tracking Bug
- LP: #726796
[ Colin Ian King ]
* SAUCE: Dell All-In-One: Remove need for Dell module alias
[ Manoj Iyer ]
* SAUCE:
Never mind, I found it here:
https://wiki.ubuntu.com/KernelTeam/KernelUpdates
``For normal 18-month releases, we will only accept updates to the kernel for
3-4 months after release. At this point we consider the in-development release
to be stable enough for testing, and the primary target for fi
What really bothers me is that I can't find anything in writing about
why this patch did not make it into Karmic.
If someone would be so kind as to point out a link that explains why
this patch did not make it into Karmic I would be grateful.
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This bug was fixed in the package linux - 2.6.32-30.59
---
linux (2.6.32-30.59) lucid-proposed; urgency=low
[ Steve Conklin ]
* Release Tracking Bug
- LP: #727336
[ Tim Gardner ]
* [Config] CONFIG_IRQ_TIME_ACCOUNTING=n
- LP: #723819
[ Upstream Kernel Changes ]
Lucid proposed kernel with virtio-net napi patch passed all of the QA Team's
regression testing
https://wiki.ubuntu.com/QATeam/KernelSRU-lucid-2.6.32-30.59
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@AvaCam Note also that the file system buffer cache uses up RAM so
activity that reads in many files while performing network I/O triggers
this bug. That is why my test case of running two concurrent recursive
"scp -r ..." jobs causes an unpatched virtio-net driver to lock up.
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@AvaCam use enough RAM until you start getting "page allocation
failure." messages in the system logs.
What is happening is that the network driver needs to have a free page
of RAM. It also cannot wait around for a page to become free. It can
however, try again later. So if there are no free pa
I've installed the proposed kernel onto both a 10.10 and 10.04 VMs.
I've just set their MTU's to 9000. What would be a good way to stress
test them?
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https://bugs.launchpad.net/bugs/57927
@Divinsa did you test proposed?
https://wiki.ubuntu.com/Testing/EnableProposed
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Title:
Lost network in KVM VM / virtio_net page allocation failure
Would love to see a fix for this as well - running over 10 10.04
instances on ec2 and having crashes + hangs often with this bug.
Finding that MTU increase to 9000 speeds up time to failure.
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Well, I rebuilt Dubnium as Maverick and ran the test:
$ w
15:12:16 up 1:25, 3 users, load average: 1.94, 1.89, 1.90
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
nutz pts/3140.147.245.89:S 13:511:20m 17:04 15:53 /usr/bin/ssh -x
-oForwardAgent no -oPermitLo
In bash
sudo -i
cat >> /etc/apt/preferences << EOF
Package: *
Pin: release a=maverick-security
Pin-Priority: 990
Package: *
Pin: release a=maverick-updates
Pin-Priority: 900
Package: *
Pin: release a=maverick-proposed
Pin-Priority: 400
EOF
echo "deb http://archive.ubuntu.com/ubuntu/ maverick-pr
16 people (17 including me) checked the "affects me too" button on this
bug report? Will any of them test proposed on Maverick?
The instructions are right here:
https://wiki.ubuntu.com/Testing/EnableProposed
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I don't use Maverick in my environment and I still use Karmic. I don't
know who you are going to get to do the Maverick testing but it ain't
me.
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T
110 GB copied in three hours with no problems.
** Tags added: verification-done-lucid
** Tags removed: verification-needed-lucid
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Title:
Lost ne
Will the patch be added to 2.6.31?
Meanwhile
$ uname -a
Linux dubnium 2.6.32-30-server #59-Ubuntu SMP Tue Mar 1 22:46:09 UTC 2011
x86_64 GNU/Linux
7765 7764 1 17:14 pts/300:01:33 scp -r
/vol/ndnp/ndnp_staging/batches/kyu oxygen:/storage/scratch/virtio-net-test/2
x 77
This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-
needed-' to 'verification-done-'.
If verification is not done by one week from today, this fix wil
** Patch added: "debdiff of virtio-net napi patch for Karmic"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/579276/+attachment/1883450/+files/karmic.debdiff
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** Branch linked: lp:ubuntu/lucid-proposed/linux-ec2
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Title:
Lost network in KVM VM / virtio_net page allocation failure
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** Tags added: verification-needed-lucid verification-needed-maverick
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Title:
Lost network in KVM VM / virtio_net page allocation failure
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Patch is now in Lucid
https://launchpad.net/ubuntu/lucid/+source/linux/2.6.32-30.59
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Title:
Lost network in KVM VM / virtio_net page allocation fa
I had my first Karmic KVM guest encounter this issue today. I'm going
to add support for Karmic to my PPA.
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Title:
Lost network in KVM VM / virti
The 2.6.32-29.58 kernel update that recently was pushed out lacks the
virtio-net napi patch.
I updated my PPA against the updated kernel.
https://launchpad.net/~nutznboltz/+archive/lucid-virtio-napi
The updated PPA is still compiling; ETA Mar 2, 2011 02:40:00 UTC
To test with my PPA run:
sudo ap
Yesterday a new ticket and branch stable-v2.6.32.29 was created with
this patch
https://bugs.launchpad.net/ubuntu/lucid/+source/linux/+bug/723819
http://kernel.ubuntu.com/git?p=rtg/ubuntu-
lucid.git;a=blob;f=drivers/net/virtio_net.c;h=fb09effbfb63f5e080a87bfc80a823f83c363810;hb=refs/heads/stable-
This patch is in 2.6.37.1 as of Thu, 10 Feb 2011 19:03:31 +
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Title:
Lost network in KVM VM / virtio_net page allocation failure
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This bug was fixed in the package linux - 2.6.38-4.31
---
linux (2.6.38-4.31) natty; urgency=low
[ Andy Whitcroft ]
* add in bugs closed by upstream patches pulled in by rebases
* rebase to 795abaf1e4e188c4171e3cd3dbb11a9fcacaf505
* [Config] enable CONFIG_VSX to allow use of
Actually, it's not in proposed yet.
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Title:
Lost network in KVM VM / virtio_net page allocation failure
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In proposed now:
http://www.ubuntuupdates.org/packages/show/199704
Please test if you can:
https://wiki.ubuntu.com/Testing/EnableProposed
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Title:
This is now Fix Committed for Natty as we have just rebased to
v2.6.38-rc5 mainline which contains this fix.
** Changed in: linux (Ubuntu)
Status: Triaged => Fix Committed
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https:/
Tested Ok on my VM:
$ uname -a
Linux dubnium 2.6.32-29-server #58pre201102150902-Ubuntu SMP Tue Feb 15
10:16:07 UTC 2011 x86_64 GNU/Linux
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Title:
Patch is now in pre-proposed.
https://launchpad.net/~kernel-ppa/+archive/pre-proposed
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Title:
Lost network in KVM VM / virtio_net page allocation
This is now officially in linus' tree but not yet tagged. Will be in
the next Natty upload.
** Changed in: linux (Ubuntu)
Assignee: (unassigned) => Andy Whitcroft (apw)
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** Changed in: linux (Ubuntu Lucid)
Status: In Progress => Fix Committed
** Changed in: linux (Ubuntu Maverick)
Status: In Progress => Fix Committed
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** Also affects: linux (Ubuntu Lucid)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Maverick)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Lucid)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu Lucid)
Status: New =>
$ git show-branch
[master] Merge branch 'usb-linus' of
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6
$ git log drivers/net/virtio_net.c
commit 3e9d08ec0a68f6faf718d5a7e050fe5ca0ba004f
Author: Bruce Rogers
Date: Thu Feb 10 11:03:31 2011 -0800
virtio_net: Add schedule check
http://www.spinics.net/lists/linux-virtualization/msg12364.html
http://www.spinics.net/lists/linux-virtualization/msg12365.html
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Title:
Lost netwo
I started following @Linux_Kernel
http://twitter.com/Linux_Kernel
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Title:
Lost network in KVM VM / virtio_net page allocation failure
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Having Rusty pick it up should bring it (usually first to linux-next) to
Linus tree. As soon as it hits there we can go on with adding it to
10.04 and 10.10. Sorry about the procedure being somewhat tedious, but
this makes sure that relevant maintainers have looked at the change and
it is being int
http://goo.gl/FQqS0
https://lists.linux-foundation.org/pipermail/virtualization/2011-February/016321.html
https://lists.linux-foundation.org/pipermail/virtualization/2011-February/016322.html
https://lists.linux-foundation.org/pipermail/virtualization/2011-February/016323.html
But still not in 2.6
https://lists.linux-
foundation.org/pipermail/virtualization/2011-February/016320.html
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Title:
Lost network in KVM VM / virtio_net page allocation
At this point a representative from the Ubuntu kernel team thanked me for my
work in driving this however no evidence exists that the patch has made it into
the upstream kernel yet.
https://lists.ubuntu.com/archives/kernel-team/2011-February/014433.html
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addressed to...
http://www.youtube.com/watch?v=gEyFH-a-XoQ#t=1m
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Title:
I have not tested with NFS, but my newsserver test was also reliably
crashing without the NAPI patch.
I have seen Bruce's response. Will he take care of this patch going
upstream?
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The patched 2.6.38 kernel is running and has not crashed while copying
data overnight.
$ uname -a
Linux dubnium 2.6.38-2-server #29~lucid3-Ubuntu SMP Tue Feb 8 21:49:57 UTC 2011
x86_64 GNU/Linux
$ date;ps -eO lstart | grep "scp -r" | egrep -v 'grep|ssh'
Wed Feb 9 05:31:07 EST 2011
1035 Tue Feb
The attached debdiff contains my modifications to that with my updated
version of the patch from Bruce Rogers of Novell. I had to modify the
patch a bit to make it work with 2.6.38 which is what Natty is based on.
I used the Ubuntu Kernel Team Daily Build PPA (which isn't really updated
daily) as
Bruce Rogers of Novell replied to my E-mail saying that the patch should have
been accepted upstream and it was an oversight.
https://lists.ubuntu.com/archives/kernel-team/2011-February/014428.html
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I've seen this happen on servers that run java webapps; it seems that
high java heap usage (especially when heap size is close to physical
memory size) helps trigger one of aforementioned bugs. Unfortunately, I
don't have a simple test case.
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Peter, does your news server use NFS?
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Title:
Lost network in KVM VM / virtio_net page allocation failure
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You can test that too.
First install the tools
apt-get install dpkg-dev python-software-properties
After the tools are installed run
apt-add-repository ppa:kernel-ppa/ppa"
and then edit:
/etc/apt/sources.list.d/kernel-ppa-ppa-lucid.list
Copy this line
deb http://ppa.launchpad.net/kernel-ppa/ppa/u
Can you patch the natty kernel with the napi patch to be absolutely
sure?
You might also use netcat to transfer files between your boxes or use
iperf. This might reduce the time to crash.
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I have reason to believe that the absence of this patch in upstream
kernels is a critical oversight.
I used "apt-add-repository ppa:kernel-ppa/ppa" to put the "Natty" kernel
on my Lucid test VM
$ uname -a
Linux dubnium 2.6.38-2-server #29~lucid1-Ubuntu SMP Mon Feb 7 15:09:10 UTC 2011
x86_64 GNU/
I already sent an E-mail to Bruce Rogers of Novell asking about why his patch
didn't get into the upstream kernel, see:
https://lists.ubuntu.com/archives/kernel-team/2011-February/014414.html
You are welcome to try reaching out to anyone who might have the answer
as to why this patch never made i
I tested with kernels that include both of these patches, but they still
crashed.
I also think that the both patches you mentioned have been backported to Ubuntu
LTS.
How should we proceed? Contact the virtio developers and the developers from
Suse
why this patch never went upstream?
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This patch was posted via E-mail on June 3, 2010
* [PATCH] KVM: add schedule check to napi_enable call
- http://kerneltrap.org/mailarchive/linux-netdev/2010/6/4/6278660
and it never made it into the upstream kernel.
Shortly after that these two were added to the upstream kernel:
http://kern
just for the records. i have a binary newsfeed testserver with the napi patch
running stable for 52 days. it really seems that this
was the missing piece! more than 66TB data transferred.
root@ubuntu-newsfeed:~# uptime
13:00:49 up 52 days, 14:47, 2 users, load average: 2.32, 2.61, 2.69
root@u
486.5 GB transmitted without locking up.
$ ifconfig eth0
eth0 Link encap:Ethernet HWaddr 00:16:36:1c:fe:1a
inet addr:192.168.1.105 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::216:36ff:fe1c:fe1a/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1
I'm actively testing two concurrent "scp -r" of > 200 GB from NFS
directory to remote host which crashed the VM on the stock kernel.
$ uname -a
Linux dubnium 2.6.32-28-server #55ubuntu1~ppa3~lucid1-Ubuntu SMP Sun Feb 6
01:03:25 UTC 2011 x86_64 GNU/Linux
To test with the PPA run
sudo apt-get ins
I did the debdiff, the update to the bug report description for the SRU
and subscribed https://launchpad.net/~ubuntu-sru
Now this needs sponsorship.
https://wiki.ubuntu.com/SponsorshipProcess
In the meantime I started this PPA with the patch
https://launchpad.net/~nutznboltz/+archive/lucid-virtio
To get any further with this bug report read
https://wiki.ubuntu.com/StableReleaseUpdates
and try to do what it says.
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Title:
Lost network in KVM
How to install the debdiff:
https://wiki.ubuntu.com/UbuntuPackagingGuide/BuildFromDebdiff
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Title:
Lost network in KVM VM / virtio_net page allocat
Oh, I see what you mean by "can't integrate backlog for every protocol".
I rebuilt the debdiff with only the virtio driver patch and deleted the
old debdiff with two patches.
Debdiff containing patch:
* [PATCH] KVM: add schedule check to napi_enable call
- http://kerneltrap.org/mailarchive
** Patch removed: "linux_2.6.32-28.55ubuntu1.debdiff"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/579276/+attachment/1828276/+files/linux_2.6.32-28.55ubuntu1.debdiff
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Debdiff containing two patches:
* [PATCH] KVM: add schedule check to napi_enable call
- http://kerneltrap.org/mailarchive/linux-netdev/2010/6/4/6278660
* [PATCH 4/8] udp: use limited socket backlog
- http://kerneltrap.org/mailarchive/linux-netdev/2010/3/3/6271096
** Patch added: "li
Thinking about this a bit more, the "udp: use limited socket backlog" is
still necessary since the "page allocation failures" from nic drivers
problem affects real hardware with e100, e1000 and e1000e nic drivers.
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Oh, sorry, I hadn't seen this yet:
KVM: add schedule check to napi_enable call
http://kerneltrap.org/mailarchive/linux-netdev/2010/6/4/6278660
If you want to get this into Lucid make a debdiff
https://wiki.ubuntu.com/PackagingGuide/Recipes/Debdiff
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This was fixed, but not in Ubuntu yet.
See:
"udp: use limited socket backlog"
http://kerneltrap.org/mailarchive/linux-netdev/2010/3/3/6271096
Bug#576838: virtio network crashes again
starting with comment 184
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=592187#184
LP#661212 "crash after ksw
It seems that "virtio_net: Add schedule check to napi_enable call" is the final
solution to the virtio_net crashes.
I have a newsserver (constantly 300-500mbit throughput) running a modified
kernel with this patch for almost one month
now.
Who can help getting this patch into ubuntu-lucid offici
It took about 5 days this time to crash an unpatches Ubuntu LTS 10.04.1 64-bit
server. I will now try my home built kernel with the "virtio_net: Add schedule
check to napi_enable call" patch included.
If this patch is the final solution can someone help with:
- getting this patch in the vanilla
Sergey, I'm still running 9.04 (2.6.28-19.24) in production because of
this virtio_net stability problem. I'd like to upgrade the VMs to 10.04
LTS after this problem is resolved. I haven't done retesting lately.
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Right, Lucid kernel package 2.6.32-25.44 includes the "more reliable"
fix (see bug 607824).
lhotari, do you use this kernel?
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Title:
Lost network
This is weird. I remember when I last experiment with a vanilla 2.6.34
some time ago, it still crashed under heavy load. 2.6.34 should have all
the patches mentioned applied except for the yet unpublished napi fix
from SuSe.
I'm currently rebuilding my test setup (binary news spool server) and see
It's not in any kernel tree, either. Probably needs someone to bring it
to lkml@'s attention.
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Title:
Lost network in KVM VM / virtio_net page al
Sergey, thank you very much for the summary. From what I can see all
patches made it to the stable kernel since 2.6.34, but not the third
patch "virtio_net: Add schedule check to napi_enable call". Am I right
with that? That might be a reason why I still see the issue with recent
kernels (2.6.34+).
SuSE added another two patches to their 2.6.32 tree. Quoting first
message:
"These are patches which we have found useful for our 2.6.32 based SLES
11 SP1 release.
The first patch ["Make delayed refill more reliable"] is already
upstream, but should be included in stable.
The second patch ["If
To summarize:
* This is a "RX lockup" condition -- VM still runs, can send traffic
(ARP requests, mostly), but cannot receive replies.
* On Lucid, two backports to 2.6.32 are needed, "virtio_net: Make
delayed refill more reliable" and "Add limit for socket backlog". I
didn't research which mainl
I hope this fix gets included in 10.04.1 LTS as soon as possible. We
haven't been able to upgrade our Ubuntu VMs (running on Linux KVM) to
10.04 because of this bug. I think the priority should be much higher.
Could someone assign this bug to someone in the Ubuntu Server team?
--
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Original patch:
http://git.kernel.org/linus/8eae939f1400326b06d0c9afe53d2a484a326871
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* net/{tcp,udp,llc,sctp,tipc,x25}: Add limit for socket backlog
(Closes: #592187)
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Another upstream bug report: http://bugs.debian.org/cgi-
bin/bugreport.cgi?bug=592187
** Bug watch added: Debian Bug tracker #592187
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=592187
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Yo
Something must have changed, though. While earlier, I saw this bug
whenever I increased network load on the virtio device, with Linux
server64 2.6.32-25-server #45-Ubuntu the situation has improved, i.e.
the system has not crashed again so far, despite some load tests.
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Lost network in KVM VM /
No, I am completely wrong. It still happens all the time. There was a period
when it seemed stable. Here is my kernel panic fwiw on lucid
linux-image-2.6.32-25-server 2.6.32-25.45:
[747393.713739] swapper: page allocation failure. order:0, mode:0x4020
[747393.713743] Pid: 0, comm: swappe
We use vmware ESXi, and we were crippled by this bug (we had to rebuild
several systems back to karmic because they were so unusable).
Somewhere in the past month a kernel upgrade seems to have resolved this
issue for us. We could reproduce this problem easily:
Remote System:
cat /dev/zero | nc -
I can confirm this bug in Ubuntu Lucis LTS 10.04.1 64-bit Server.
This bug seems not to exists in an older kernel from opensuse 11.1 which I use
with heavy network i/o load.
Version is: Linux 2.6.27.48-0.2-default
So the bug seems to have been added somewhere in between.
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Lost network in KV
Switching to the 'e1000' emulation seems to have worked for us, but it's
far from a nice solution.
Rupert
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I think I'm seeing this or a similar bug on my lucid VM (on a lucid
host), too. (2.6.32-24-server Kernel)
Is there a workaround? Does it help, e.g., to switch from virtio to some
other network device?
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Lost network in KVM VM / virtio_net page allocation failure
https://bugs.launchpad.net/bugs/
Another variant of this bug occurs even with both patches applied -- see
recent comments in debbug 592187. Reporter says:
"With 2.6.35-1~experimental.1 and virtio in the guest, 2.6.32-18 in the
host I cannot (yet) trigger the bug."
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I can confirm this same issue.
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Lost network in KVM VM / virtio_net page allocation failure
https://bugs.launchpad.net/bugs/579276
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** Tags added: kernel-needs-review
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Lost network in KVM VM / virtio_net page allocation failure
https://bugs.launchpad.net/bugs/579276
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Please note that this bug eventually kills my VM. It loses network, logs
nfs timeouts and won't let anyone login to the console, nor do anything
useful. A reboot of the guest fixes this, but since the error occurs
after such a short time, this is not even a workaround.
Reversing the client/server
I can confirm this on a Lucid VM running in KVM with a Lucid host. This
mainly happens if the VM is copying data to/from an NFS share (guest as
the NFS client, host as the NFS server). IMHO this should be prioritised
higher than 'medium' since it doesn't take more than just minutes on
full network
Regarding my last comment: I tried it, using the 2010-05-31-lucid
mainline kernel build. The issue seemed to take longer to come about,
but it still happened eventually.
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Lost network in KVM VM / virtio_net page allocation failure
https://bugs.launchpad.net/bugs/579276
You received this bug not
So is installation of a recent upstream kernel thought to be a
workaround for this?
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Lost network in KVM VM / virtio_net page allocation failure
https://bugs.launchpad.net/bugs/579276
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
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** Changed in: linux (Ubuntu)
Status: Incomplete => Triaged
** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
** Tags added: cherry-pick kernel-net
** Tags removed: needs-kernel-logs needs-upstream-testing
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Lost network in KVM VM / virtio_net page allocation failure
http
Quoting Debian bug report:
"> It seems as if Redhat encountered and fixed this bug back in January:
>
> https://bugzilla.redhat.com/show_bug.cgi?id=554078
The original upstream bug fix was:
commit 3161e453e496eb5643faad30fff5a5ab183da0fe
Author: Rusty Russell
Date: Wed Aug 26 12:22:32 2009 -
apport information
** Tags added: apport-collected
** Description changed:
Binary package hint: 2.6.32-21-server
I'm seeing similar bugs in a VM running Lucid as there is reported in these
Redhat bug reports:
https://bugzilla.redhat.com/show_bug.cgi?id=520119
https://bugzilla.redhat.
Hi lhotari,
Please be sure to confirm this issue exists with the latest development release
of Ubuntu. ISO CD images are available from
http://cdimage.ubuntu.com/releases/ . If the issue remains, please run the
following command from a Terminal (Applications->Accessories->Terminal). It
will
upstream bug report: http://bugs.debian.org/cgi-
bin/bugreport.cgi?bug=576838
** Bug watch added: Debian Bug tracker #576838
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=576838
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Lost network in KVM VM / virtio_net page allocation failure
https://bugs.launchpad.net/bugs/579276
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