[snip]
I believe that -kernel use will be rare, though. It's a lot
easier to keep everything in one filesystem.
Well, for what it's worth, I rarely ever use anything else. My
virtual disks are raw so I can loop mount them easily, and I can also
switch my guest kernels from outside...
On 03/23/2010 02:54 AM, Ingo Molnar wrote:
* Alexander Grafag...@suse.de wrote
Yes. I think the point was that every layer in between brings potential
slowdown and loss of features.
Exactly. The more 'fragmented' a project is into sub-projects, without a
single, unified, functional
On 03/23/2010 05:13 PM, Kevin Wolf wrote:
Am 22.03.2010 23:06, schrieb Anthony Liguori:
On 03/22/2010 02:47 PM, Avi Kivity wrote:
Having qemu enumerate guests one way or another is not a good idea IMO
since it is focused on one guest and doesn't have a system-wide entity.
Avi Kivity wrote:
On 03/24/2010 06:40 PM, Joerg Roedel wrote:
Looks trivial to find a guest, less so with enumerating (still doable).
Not so trival and even more likely to break. Even it perf has the pid of
the process and wants to find the directory it has to do:
1. Get the uid of
Antoine Martin wrote:
On 03/08/2010 02:35 AM, Avi Kivity wrote:
On 03/07/2010 09:25 PM, Antoine Martin wrote:
On 03/08/2010 02:17 AM, Avi Kivity wrote:
On 03/07/2010 09:13 PM, Antoine Martin wrote:
What version of glibc do you have installed?
Latest stable:
sys-devel/gcc-4.3.4
sys-libs
On 02/27/2010 12:38 AM, Antoine Martin wrote:
1 0 0 98 0 1| 0 0 | 66B 354B| 0 0 | 3011
1 1 0 98 0 0| 0 0 | 66B 354B| 0 0 | 2911
From that point onwards, nothing will happen.
The host has disk IO to spare... So what is it waiting
Host and guest kernel version is 2.6.34, headers 2.6.33, glibc 2.10.1-r1
qemu-kvm 0.12.4 + patch above.
Who do I need to bug? glibc? kvm?
Thanks
Antoine
On 04/09/2010 05:00 AM, Antoine Martin wrote:
Antoine Martin wrote:
On 03/08/2010 02:35 AM, Avi Kivity wrote:
On 03/07/2010 09:25 PM
On 05/22/2010 06:17 PM, Michael Tokarev wrote:
22.05.2010 14:44, Antoine Martin wrote:
Bump.
Now that qemu is less likely to eat my data, *[Qemu-devel] [PATCH 4/8]
block: fix sector comparism in*
http://marc.info/?l=qemu-develm=127436114712437
I thought I would try using the raw 1.5TB
On 05/23/2010 01:10 AM, Jim Paris wrote:
Antoine Martin wrote:
On 02/27/2010 12:38 AM, Antoine Martin wrote:
1 0 0 98 0 1| 0 0 | 66B 354B| 0 0 | 3011
1 1 0 98 0 0| 0 0 | 66B 354B| 0 0 | 2911
From that point
On 05/23/2010 06:57 PM, Avi Kivity wrote:
On 05/23/2010 11:53 AM, Antoine Martin wrote:
I'm not: 64-bit host and 64-bit guest.
Just to be sure, I've tested that patch and still no joy:
/dev/vdc: read failed after 0 of 512 at 0: Input/output error
/dev/vdc: read failed after 0 of 512 at 0
On 05/23/2010 09:18 PM, Avi Kivity wrote:
On 05/23/2010 05:07 PM, Antoine Martin wrote:
On 05/23/2010 06:57 PM, Avi Kivity wrote:
On 05/23/2010 11:53 AM, Antoine Martin wrote:
I'm not: 64-bit host and 64-bit guest.
Just to be sure, I've tested that patch and still no joy:
/dev/vdc: read
How about if=ide?
Will test with another kernel and report back (this one doesn't have
any non-virtio drivers)
Can anyone tell me which kernel module I need for if=ide? Google was
no help here.
(before I include dozens of unnecessary modules in my slimmed down and
non modular kernel)
On 05/23/2010 09:43 PM, Antoine Martin wrote:
On 05/23/2010 09:18 PM, Avi Kivity wrote:
On 05/23/2010 05:07 PM, Antoine Martin wrote:
On 05/23/2010 06:57 PM, Avi Kivity wrote:
On 05/23/2010 11:53 AM, Antoine Martin wrote:
I'm not: 64-bit host and 64-bit guest.
Just to be sure, I've tested
On 05/23/2010 10:12 PM, Avi Kivity wrote:
On 05/23/2010 05:43 PM, Antoine Martin wrote:
Description of the problem:
A guest tries to mount a large raw partition (1.5TB /dev/sda9 in my
case), this fails with pread enabled, works with it disabled.
Did you mean: preadv?
Yes, here's what makes
On 05/24/2010 12:47 AM, Stefan Hajnoczi wrote:
On Sun, May 23, 2010 at 5:18 PM, Antoine Martin anto...@nagafix.co.uk wrote:
Why does it work in a chroot for the other options (aio=native, if=ide, etc)
but not for aio!=native??
Looks like I am misunderstanding the semantics of chroot
Jan Kiszka wrote:
Marcelo Tosatti wrote:
On Sun, Sep 06, 2009 at 02:50:00PM +0700, Antoine Martin wrote:
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[snip]
Is this an AMD host?
Nope, Intel Core2, more host info :
I have put all the relevant binaries and their config files here:
http
Hi,
I've had this problem before and worked around it using scripts, but
this seems to happen a lot more now that a host has been upgraded to
2.6.31.4 (could just be me noticing more too)
After the guest kernel shuts off, the qemu process ends up spinning,
consuming 200% cpu (both cores!) and
Michael Tokarev wrote:
Avi Kivity пишет:
On 10/16/2009 07:45 PM, Antoine Martin wrote:
Hi,
Is there an easy way that I have missed to share a virtual disk
read-only between many guests whilst still having the ability to update
it occasionally from the host?
That's very fragile, since
Hi,
I am testing kernel builds with Intel's ICC and got a failure on KVM
(not that the rest was very smooth either...)
Just in case someone is interested, here it is (this kernel tree is
loosely based on linux-next + other patches):
CC [M] arch/x86/kvm/svm.o - due to: include/linux/bounds.h
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nuit...@melchior.nuitari.net wrote:
Hi everybody,
I switched to KVM some time ago from vmware and VB. Everything works
great but there are noticeable lags in mouse motion in comparison with
other VMs.
Is this a known issue? Are there any
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Jamie Kirkpatrick wrote:
Try adding -usbdevice tablet. This should sort it out.
Thank you very much. That did the trick!
2009/1/6 Antoine Martin anto...@nagafix.co.uk:
nuit...@melchior.nuitari.net wrote:
Hi everybody,
I switched to KVM
I've tried various guests, including most recent Fedora12 kernels,
custom 2.6.32.x
All of them hang around the same point (~1GB written) when I do heavy IO
write inside the guest.
I have waited 30 minutes to see if the guest would recover, but it just
sits there, not writing back any data, not
On 01/22/2010 02:57 PM, Michael Tokarev wrote:
Antoine Martin wrote:
I've tried various guests, including most recent Fedora12 kernels,
custom 2.6.32.x
All of them hang around the same point (~1GB written) when I do heavy IO
write inside the guest.
[]
Host is running: 2.6.31.4
On 01/23/2010 01:28 AM, Antoine Martin wrote:
On 01/22/2010 02:57 PM, Michael Tokarev wrote:
Antoine Martin wrote:
I've tried various guests, including most recent Fedora12 kernels,
custom 2.6.32.x
All of them hang around the same point (~1GB written) when I do
heavy IO
write inside
On 01/23/2010 02:15 AM, Antoine Martin wrote:
On 01/23/2010 01:28 AM, Antoine Martin wrote:
On 01/22/2010 02:57 PM, Michael Tokarev wrote:
Antoine Martin wrote:
I've tried various guests, including most recent Fedora12 kernels,
custom 2.6.32.x
All of them hang around the same point (~1GB
On 01/23/2010 02:15 AM, Antoine Martin wrote:
On 01/23/2010 01:28 AM, Antoine Martin wrote:
On 01/22/2010 02:57 PM, Michael Tokarev wrote:
Antoine Martin wrote:
I've tried various guests, including most recent Fedora12 kernels,
custom 2.6.32.x
All of them hang around the same point (~1GB
1 0 0 98 0 1| 0 0 | 66B 354B| 0 0 | 3011
1 1 0 98 0 0| 0 0 | 66B 354B| 0 0 | 2911
From that point onwards, nothing will happen.
The host has disk IO to spare... So what is it waiting for??
Moved to an AMD64 host. No effect.
Disabled
Hi,
With qemu-kvm-0.12.3:
./qemu-system-x86_64 [..] -drive file=/dev/sdc9,if=virtio,cache=none [..]
[1.882843] vdc:
[2.365154] udev: starting version 146
[2.693768] end_request: I/O error, dev vdc, sector 126
[2.693772] Buffer I/O error on device vdc, logical block 126
[
On 03/07/2010 04:28 AM, Michael Tokarev wrote:
Antoine Martin wrote:
Hi,
With qemu-kvm-0.12.3:
./qemu-system-x86_64 [..] -drive file=/dev/sdc9,if=virtio,cache=none [..]
[1.882843] vdc:
[2.365154] udev: starting version 146
[2.693768] end_request: I/O error, dev vdc, sector 126
On 03/07/2010 05:00 PM, Christoph Hellwig wrote:
On Sun, Mar 07, 2010 at 12:32:38PM +0300, Michael Tokarev wrote:
Antoine Martin wrote:
[]
https://sourceforge.net/tracker/?func=detailatid=893831aid=2933400group_id=180599
The initial report is almost 8 weeks old!
Is data
[snip]
So there is something else at play. And just for the record:
1) kvm-88 works fine *with the exact same setup*
2) I've tried running as root
3) The raw disk mounts fine from the host.
So I *know* the problem is with kvm. I wouldn't post to the list
without triple checking that.
I have
On 03/08/2010 12:30 AM, Avi Kivity wrote:
On 03/07/2010 07:21 PM, Christoph Hellwig wrote:
On Sun, Mar 07, 2010 at 07:18:40PM +0200, Avi Kivity wrote:
The only things that stands out is this before the read failed
message:
[pid 9098] lseek(12, 0, SEEK_END) = 1321851815424
[pid 9121]
On 03/08/2010 12:34 AM, Christoph Hellwig wrote:
On Sun, Mar 07, 2010 at 07:30:06PM +0200, Avi Kivity wrote:
It may also be that glibc is emulating preadv, incorrectly.
I've done a quick audit of all pathes leading to pread and all seem
to align correctly. So either a broken glibc emulation
[snip]
The other interesting thing is that it's using pread - which means
it's a too old kernel to use preadv and thus a not very well tested
codepath with current qemu.
Too old?, I am confused: both host and guest kernels are 2.6.33!
I built KVM against the 2.6.30 headers though.
You need to
On 03/08/2010 02:09 AM, Asdo wrote:
Avi Kivity wrote:
On 03/07/2010 08:01 PM, Antoine Martin wrote:
Yes cache=none: -drive file=./vm/var_fs,if=virtio,cache=none
Side question: this is the right thing to do for raw partitions, right?
The rightest.
Isn't cache=writeback now safe on virtio
On 03/08/2010 02:10 AM, Avi Kivity wrote:
On 03/07/2010 09:07 PM, Antoine Martin wrote:
Antoine, can you check this? ltrace may help,
This the only part that looked slightly relevant:
[pid 26883] __xstat64(1, ./vm/media_fs, 0x7fff92e40500) = 0
[pid 26883] malloc(48
On 03/08/2010 02:17 AM, Avi Kivity wrote:
On 03/07/2010 09:13 PM, Antoine Martin wrote:
What version of glibc do you have installed?
Latest stable:
sys-devel/gcc-4.3.4
sys-libs/glibc-2.10.1-r1
$ git show glibc-2.10~108 | head
commit e109c6124fe121618e42ba882e2a0af6e97b8efc
Author: Ulrich
Hi,
I've updated my host kernel headers to 2.6.33, rebuilt glibc (and the
base system), rebuilt kvm.
... and now I get hundreds of those in dmesg on the host when I start a
guest kernel that worked fine before. (2.6.33 + pax patch v5)
set_cr0: 0x88000ec29d58 #GP, reserved bits 0x80040033
On 03/11/2010 04:31 PM, pagee...@freemail.hu wrote:
On 11 Mar 2010 at 8:44, Avi Kivity wrote:
On 03/10/2010 06:17 PM, Antoine Martin wrote:
Hi,
I've updated my host kernel headers to 2.6.33, rebuilt glibc (and the
base system), rebuilt kvm.
... and now I get hundreds of those
On 03/08/2010 02:35 AM, Avi Kivity wrote:
On 03/07/2010 09:25 PM, Antoine Martin wrote:
On 03/08/2010 02:17 AM, Avi Kivity wrote:
On 03/07/2010 09:13 PM, Antoine Martin wrote:
What version of glibc do you have installed?
Latest stable:
sys-devel/gcc-4.3.4
sys-libs/glibc-2.10.1-r1
$ git
On 03/22/2010 02:17 AM, Ingo Molnar wrote:
* Anthony Liguorianth...@codemonkey.ws wrote:
On 03/19/2010 03:53 AM, Ingo Molnar wrote:
* Avi Kivitya...@redhat.com wrote:
There were two negative reactions immediately, both showed a fundamental
server versus desktop bias:
-
On 03/22/2010 03:11 AM, Avi Kivity wrote:
On 03/21/2010 10:08 PM, Olivier Galibert wrote:
On Sun, Mar 21, 2010 at 10:01:51PM +0200, Avi Kivity wrote:
On 03/21/2010 09:17 PM, Ingo Molnar wrote:
Adding any new daemon to an existing guest is a deployment and
usability
nightmare.
The logical
On 03/22/2010 03:24 AM, Avi Kivity wrote:
On 03/21/2010 10:18 PM, Antoine Martin wrote:
That includes the guest kernel. If you can deploy a new kernel in
the guest, presumably you can deploy a userspace package.
That's not always true.
The host admin can control the guest kernel via kvm
Hi list,
Got 2 crashes on the same guest in 2 days when under heavy IO (virt-io).
There's not much to go at:
3785 Bus error ./qemu-19 -clock dynticks -usbdevice tablet
- -m 768 -monitor telnet:127.0.0.1:10019,server,nowait -L ./ -kernel
./bzImage-2.6.28.1 -append
are still running 2.6.29.1, but I am not likely to try that
release again on the host anytime soon! Ouch!
Antoine
Antoine Martin wrote:
Hi,
I've got some hosts that were happily running the 2.6.25.x host kernel,
kvm-84, kernel.org kvm modules.
The guests were running 2.6.25 to 2.6.29.x quite
And if anything, it made things worse... (speed was down to just 6KB/s
because of the number of broken packets)
Any ideas?
Cheers
Antoine
Mark McLoughlin wrote:
On Sun, 2009-04-19 at 14:48 +0300, Avi Kivity wrote:
Antoine Martin wrote:
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Wireshark
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Hi,
./configure --kerneldir=/usr/src/linux-2.6.29.4 --static
[...]
make
[...]
CCx86_64-softmmu/i386-dis.o
ARx86_64-softmmu/libqemu.a
LINK x86_64-softmmu/qemu-system-x86_64
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Michael Tokarev wrote:
Antoine Martin wrote:
[]
LINK x86_64-softmmu/qemu-system-x86_64
/usr/lib/gcc/x86_64-pc-linux-gnu/4.3.2/../../../../x86_64-pc-linux-gnu/bin/ld:
cannot find -lpci
What gives?
Is it your system or who's? Why
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Hi list,
I was just testing some old builds and managed to freeze the guest I was
testing on... Totally repeatable.
Running the same binary on a kernel not running in KVM does not cause
the lockup.
Guest:
# uname -a
Linux virtual.nagafix.co.uk
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Hi,
I was told to turn off -usbdevice tablet to reduce context switching
on the host, and that vinagre handled the mouse position correctly
without it.
Just tried it: Vinagre / Remote Desktop Viewer 2.26.1 and it is as
unusable as all the other VNC
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Hi,
Dor Laor wrote:
On 08/03/2009 04:52 AM, Kent Tong wrote:
Hi,
It seems to be an unsettled issue, but, would any kind soul suggest
the current
best practice for setting the clock in Ubuntu Linux and Windows guests?
For Linux the best
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It seems to be an unsettled issue, but, would any kind soul suggest
the current
best practice for setting the clock in Ubuntu Linux and Windows guests?
For Linux the best source clock is the kvm pv clock (exist from 2.6.27
and above).
#
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Hi,
I reported this bug a while ago but no-one picked up on it.
Just launch any UML 32-bit kernel on a 64-bit KVM guest:
test $ ./kernel32-2.6.16.62
Checking that ptrace can change system call numbers...OK
Checking syscall emulation patch for
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Hi Marcelo,
Marcelo Tosatti wrote:
On Sat, Sep 05, 2009 at 08:41:26PM +0700, Antoine Martin wrote:
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Hi,
I reported this bug a while ago but no-one picked up on it.
Just launch any UML 32-bit
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[snip]
Is this an AMD host?
Nope, Intel Core2, more host info :
I have put all the relevant binaries and their config files here:
http://uml.devloop.org.uk/kvmbug/
Host kernel, qemu binary, kvm guest kernel and the UML binary I have
used for
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Hi,
Avi suggested that I use vinagre as a VNC client, but that did not solve
the problem for me.
I had to add: -usbdevice tablet
to the KVM command line.
Antoine
shawn du wrote:
Hi,
I am using vnc for graphical user interface viewing. The
] Total swap = 1048568kB
[701453.836985] 131056 pages RAM
[701453.836987] 4801 pages reserved
[701453.836988] 98664 pages shared
[701453.836990] 34608 pages non-shared
Antoine Martin wrote:
Hi,
The bug report below does indeed match everything I have experienced.
Upon further inspection
[929492.183252] Total swap = 1048568kB
[929492.186003] 131056 pages RAM
[929492.186006] 4799 pages reserved
[929492.186007] 44697 pages shared
[929492.186008] 90516 pages non-shared
[930274.380075] eth0: no IPv6 routers present
Antoine Martin wrote:
Hi
Still getting (some but less) network
Re-sending as this does not seem to have made it to the list.
Antoine Martin wrote:
Hi,
Here is another one, any ideas?
These oopses do look quite deep. Is it normal to end up in tcp_send_ack
from pdflush??
Cheers
Antoine
[929492.154634] pdflush: page allocation failure. order:0
Avi Kivity wrote:
Antoine Martin wrote:
Hi,
Here is another one, any ideas?
These oopses do look quite deep. Is it normal to end up in tcp_send_ack
from pdflush??
I think it can happen anywhere, part of the net softirq.
Hah, gotcha.
Cheers
Antoine
[929492.154634] pdflush: page
Avi Kivity wrote:
Antoine Martin wrote:
You're out of memory.
That's quite odd, the guest wasn't even hitting the swap at the tine.
But you do have swap enabled?
Yes.
I always do this on the guests as it seems fairer to let the guests use
swap when they need the extra memory rather
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Hi,
I've recently increased the number of guests (+20%) running on one of my
hosts and found that the responsiveness suffered.
Before that, the context switches were hovering around 10K, now they're
close to 30K. Or this could just be because I
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Ah, -usbdevice tablet, interrupt generator from hell. Let it go and
you'll see your context switch rate drop.
Indeed that solved it!
(only kept it for the one windows guest that really needs it)
Many many thanks.
- total-cpu-usage
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Avi Kivity wrote:
Antoine Martin wrote:
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Ah, -usbdevice tablet, interrupt generator from hell. Let it go and
you'll see your context switch rate drop.
Indeed that solved it!
(only kept
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