Thanks for the info, slu. I'm sorry we couldn't nail this down in
lucid. Since we have no other reporters to help track down the cause
and have lost the only hardware on which it was found, I'm going to mark
this invalid.
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Server dont crash with disabled KSM, but I test it only 7 days that was not
enough to give a answer!
Because we had a lot of trouble with the crashes and dont know its maybe a
hardware failure we switch to debian with the same hardware.
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In comment #22, you say you are waiting to find out if disabling KSM
solved it. Do I gather from comment #23 that you reproduced the crash
with KSM disabled?
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The server has been running for 10 weeks without any problem on debian
6.0.
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https://bugs.launchpad.net/bugs/710114
Title:
kvm/qemu server "freeze"
To manage notific
@ Serge,
yes KSM was enabled all the time and crashes, I disable it yesterday for
testing as you write in comment #14.
And no I can not reproducing the crash, sorry, I have no idea where the
problem is.
My first idea was, because the server crash every few weeks that the
windows auto restart fun
@slu,
I'm confused. In comment #18 you said KSM was enabled, and I thought
the crash was 100% reproducible. Is comment #20 about a different
server? Or are you saying that with KSM disabled you cannot reproduce
the crash?
If it's not 100% reproducible (or even 50%) then maybe I just need to
sp
KSM is disabled:
root@vmhost:~# cat /etc/default/qemu-kvm
# To disable qemu-kvm's page merging feature, set KSM_ENABLED=0 and
# sudo restart qemu-kvm
KSM_ENABLED=0
#SLEEP_MILLISECS=2000
root@vmhost:~#
Can not really reproduce the problem, the server running sometimes for four
weeks without a cra
Tried to reproduce twice on the server kernel. still couldn't hit it.
Can you try and reproduce with ksm disabled?
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Title:
kvm
root@vmhost:~# cat /etc/default/qemu-kvm
# To disable qemu-kvm's page merging feature, set KSM_ENABLED=0 and
# sudo restart qemu-kvm
KSM_ENABLED=1
#SLEEP_MILLISECS=2000
root@vmhost:~#
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We have three Ubuntu 10.04 servers (64Bit) and two WinXP Prof. 32Bit on this
quem-kvm server running.
Maybe there is no problem with the WinXP but in combination with the Ubuntu
Servers.
It looks like there is no way to reproduce the problem reliable and I am
the only person who is affected.
**
Quoting slu (710...@bugs.launchpad.net):
> Hi,
>
> don't look so good:
> root@vmhost:/var/crash# ls -la
> insgesamt 8
> drwxrwxrwt 2 root root 4096 2010-04-13 22:52 .
> drwxr-xr-x 14 root root 4096 2010-06-04 01:37 ..
> root@vmhost:/var/crash#
>
> Linux vmhost 2.6.32-30-server #59-Ubuntu SMP Tue
Hi,
don't look so good:
root@vmhost:/var/crash# ls -la
insgesamt 8
drwxrwxrwt 2 root root 4096 2010-04-13 22:52 .
drwxr-xr-x 14 root root 4096 2010-06-04 01:37 ..
root@vmhost:/var/crash#
Linux vmhost 2.6.32-30-server #59-Ubuntu SMP Tue Mar 1 22:46:09 UTC 2011 x86_64
GNU/Linux
qemu-kvm 0.12.3+no
Still could not reproduce.
Since KSM shows up in the stack trace, could you try disabling KSM by
doing
echo 0 > /sys/kernel/mm/ksm/run
and then try again?
Please also append your /etc/default/qemu-kvm and the result of
virsh dumpxml (winxp_vm_name)
to this report.
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Hm, qemu-kvm 0.12.3+noroms-0ubuntu9.4 and kernel 2.6.32-30-generic
#59-Ubuntu, I was not able to reproduce. Although I was doing it over
vnc. Let me try over ssh -X.
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Am installing a winxp sp2 VM right now on a lucid host to test with.
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Title:
kvm/qemu server "freeze"
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Hi,
can you look under /var/crash for the info collected by apport-collect?
If you can log in on terminal (after a reboot if need be) and do
apport-bug /var/crash/_qemu-kvm..crash
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@ Serge,
Server crash today again.
I start "apport-collect 710114" on the terminal, but I can not send the
bugreport with my launchpad login :-(
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@slu
The next time this happens, could you please run
apport-collect 710114
So we can hopefully get all the information we need to figure out what's
going on?
** Changed in: qemu-kvm (Ubuntu)
Status: In Progress => Incomplete
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Yes installed using the defaults from virt-manager.
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Title:
kvm/qemu server "freeze"
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Ubunt
(*&$% guis
** Changed in: qemu-kvm (Ubuntu)
Status: Fix Committed => In Progress
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Title:
kvm/qemu server "freeze"
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So a lucid host, and winxp professional guest. Installed using the
defaults from virt-manager? I"ll give that a shot when I can boot my
host into lucid.
** Changed in: qemu-kvm (Ubuntu)
Status: Incomplete => Fix Committed
** Changed in: qemu-kvm (Ubuntu)
Assignee: (unassigned) => Se
I produce a crash today.
Server running with a older Kernel at the moment (for testing):
Linux vmhost 2.6.32-26-server #48-Ubuntu SMP Wed Nov 24 10:28:32 UTC 2010
x86_64 GNU/Linux
What I do:
- ssh -X root@vmhost (from my client)
- start virt-manager
- open the screen of a virtual winxp prof (whi
Yes lucid running from june 2010 to october 2010 without problems on this
hardware.
In november or december 2010 the server crash first time with the error.
Dont find a way to reliably reproduce the problem, happens one time in the
night and the other two times in middle of the day.
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You rece
Thanks for reporting this bug and helping to make Ubuntu better.
This looks to be a bug in the rmap_remove() function in the kernel kvm
module. Unfortunately that part of the code has changed quite a bit so
this could be tough to track down. To help narrow things down, can you
tell us when was t
** Package changed: ubuntu => qemu-kvm (Ubuntu)
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Title:
kvm/qemu server "freeze"
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