On Wed, Feb 16, 2011 at 12:50 PM, Thomas Broda tho...@bassfimass.de wrote:
On Tue, 15 Feb 2011 15:50:00 +, Stefan Hajnoczi
stefa...@gmail.com wrote:
On Tue, Feb 15, 2011 at 10:15 AM, Thomas Broda tho...@bassfimass.de
wrote:
Using O_DIRECT, performance went down to 11 MB/s
On Mon, Feb 14, 2011 at 6:15 PM, Thomas Broda tho...@bassfimass.de wrote:
dd'ing /dev/zero to a testfile gives me a throughput of about 400MB/s when
done directly on the hypervisor. If I try this from within a virtual guest,
it's only 19MB/s to 24MB/s if the guest is on the LVM volume (raw
On Tue, Feb 15, 2011 at 10:15 AM, Thomas Broda tho...@bassfimass.de wrote:
On Tue, 15 Feb 2011 09:19:23 +, Stefan Hajnoczi
stefa...@gmail.com wrote:
Did you run dd with O_DIRECT?
dd if=/dev/zero of=path-to-device oflag=direct bs=64k
Using O_DIRECT, performance went down to 11 MB/s
On Mon, Feb 14, 2011 at 10:18 PM, Anthony Liguori anth...@codemonkey.ws wrote:
On 02/14/2011 11:56 AM, Chris Wright wrote:
Please send in any agenda items you are interested in covering.
-rc2 is tagged and waiting for announcement. Please take a look at -rc2 and
make sure there is nothing
On Mon, Feb 7, 2011 at 10:40 PM, Chris Wright chr...@redhat.com wrote:
Please send in any agenda items you are interested in covering.
Automated builds and testing: maintainer trees, integrating
KVM-Autotest, and QEMU tests we need but don't exist
Stefan
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On Tue, Feb 8, 2011 at 3:55 PM, Chris Wright chr...@redhat.com wrote:
Automated builds and testing
- found broken 32-bit
The broken build was found (and fixed?) before automated qemu.git
builds. It's a good motivator though.
Stefan
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On Wed, Feb 9, 2011 at 1:55 AM, Michael S. Tsirkin m...@redhat.com wrote:
On Wed, Feb 09, 2011 at 12:09:35PM +1030, Rusty Russell wrote:
On Wed, 9 Feb 2011 11:23:45 am Michael S. Tsirkin wrote:
On Wed, Feb 09, 2011 at 11:07:20AM +1030, Rusty Russell wrote:
On Wed, 2 Feb 2011 03:12:22 pm
On Mon, Jan 31, 2011 at 11:27 AM, Jan Kiszka jan.kis...@siemens.com wrote:
On 2011-01-31 11:03, Avi Kivity wrote:
On 01/27/2011 04:33 PM, Jan Kiszka wrote:
Found by Stefan Hajnoczi: There is a race in kvm_cpu_exec between
checking for exit_request on vcpu entry and timer signals arriving
On Mon, Jan 31, 2011 at 12:18 PM, Jan Kiszka jan.kis...@siemens.com wrote:
On 2011-01-31 13:13, Stefan Hajnoczi wrote:
On Mon, Jan 31, 2011 at 11:27 AM, Jan Kiszka jan.kis...@siemens.com wrote:
On 2011-01-31 11:03, Avi Kivity wrote:
On 01/27/2011 04:33 PM, Jan Kiszka wrote:
Found by Stefan
2011/1/29 Darko Petrović darko.b.petro...@gmail.com:
Could you please tell me if it is possible to use a block driver that
completely avoids the guest kernel and copies block data directly to/from
the given buffer in the guest userspace?
If yes, how to activate it? If not... why not? :)
2011/1/29 Darko Petrović darko.b.petro...@gmail.com:
Thanks for your help. Actually, I am more interested in doing it from the
outside, if possible (I am not allowed to change the application code). Can
the guest be tricked by KVM somehow, using the appropriate drivers? Just to
clear it out,
On Fri, Jan 28, 2011 at 1:13 PM, Himanshu Chauhan
hschau...@nulltrace.org wrote:
I just cloned qemu-kvm, built and installed it. But the qemu-img fails
to create any disk image above 1G. The problem as I see is use of
ssize_t for image size. When size is 2G, the check if (sval 0)
succeeds and
On Tue, Jan 25, 2011 at 2:02 PM, Luiz Capitulino lcapitul...@redhat.com wrote:
- Google summer of code 2011 is on, are we interested? (note: I just saw the
news, I don't have any information yet)
http://www.google-melange.com/document/show/gsoc_program/google/gsoc2011/timeline
I'd like to
On Tue, Jan 25, 2011 at 2:26 PM, Avi Kivity a...@redhat.com wrote:
On 01/25/2011 12:06 AM, Anthony Liguori wrote:
On 01/24/2011 07:25 AM, Chris Wright wrote:
Please send in any agenda items you are interested in covering.
- coroutines for the block layer
I have a perpetually in progress
On Sun, Jan 23, 2011 at 9:35 PM, Emil Langrock emil.langr...@gmx.de wrote:
there is support for ext4 to use the trim ATA command when a block is freed. I
read that there should be an extra command which does that freeing afterwards.
So is it possible to use that information inside the qcow to
On Mon, Jan 10, 2011 at 1:05 PM, Jes Sorensen jes.soren...@redhat.com wrote:
On 01/10/11 12:59, Juan Quintela wrote:
Juan Quintela quint...@redhat.com wrote:
Now sent it to the right kvm list. Sorry for the second sent.
Please send any agenda items you are interested in covering.
- KVM
On Thu, Jan 6, 2011 at 7:48 AM, Nikola Ciprich extmaill...@linuxbox.cz wrote:
So windows started checking disk integrity, but the problem is, that
it's waaay too slow - after ~12 hours, it's still running and seeems
like it'll take ages to finish.
Please post your KVM command-line.
Have you
On Wed, Jan 5, 2011 at 5:01 PM, Serge E. Hallyn se...@hallyn.com wrote:
I don't see this patch in the git tree, nor a revert of the buggy
commit. Was any decision made on this?
Blue Swirl posted a patch a few days ago:
[PATCH] pc: move port 92 stuff back to pc.c from pckbd.c
It hasn't been
On Thu, Dec 30, 2010 at 11:25 PM, Erich Weiler bitscrub...@gmail.com wrote:
I've got this issue that I've been banging my head against a wall for a
while over and I think another pair of eyes may help, if anyone have a
moment. We have this new-ish KVM VM server (with the latest CentOS 5.5
On Tue, Jan 4, 2011 at 11:02 AM, Yoshiaki Tamura
tamura.yoshi...@lab.ntt.co.jp wrote:
After doing some heavy load tests, I realized that we have to
take a hybrid approach to replay for now. This is because when a
device moves to the next state (e.g. virtio decreases inuse) is
different
On Sat, Dec 25, 2010 at 7:02 PM, Peter Lieven p...@dlh.net wrote:
this was the outcome of my bisect session:
956a3e6bb7386de48b642d4fee11f7f86a2fcf9a is first bad commit
commit 956a3e6bb7386de48b642d4fee11f7f86a2fcf9a
Author: Blue Swirl blauwir...@gmail.com
Date: Sat May 22 07:59:01 2010
On Sun, Dec 26, 2010 at 9:21 PM, Peter Lieven p...@dlh.net wrote:
Am 25.12.2010 um 20:02 schrieb Peter Lieven:
Am 23.12.2010 um 03:42 schrieb Stefan Hajnoczi:
On Wed, Dec 22, 2010 at 10:02 AM, Peter Lieven p...@dlh.net wrote:
If I start a VM with the following parameters
qemu-kvm-0.13.0
On Wed, Dec 22, 2010 at 10:02 AM, Peter Lieven p...@dlh.net wrote:
If I start a VM with the following parameters
qemu-kvm-0.13.0 -m 2048 -smp 2 -monitor tcp:0:4014,server,nowait -vnc :14
-name 'ubuntu.test' -boot order=dc,menu=off -cdrom
ubuntu-10.04.1-desktop-amd64.iso -k de
and select
On Fri, Dec 17, 2010 at 4:19 PM, Yoshiaki Tamura
tamura.yoshi...@lab.ntt.co.jp wrote:
2010/12/17 Stefan Hajnoczi stefa...@gmail.com:
On Thu, Dec 16, 2010 at 9:50 AM, Yoshiaki Tamura
tamura.yoshi...@lab.ntt.co.jp wrote:
2010/12/16 Michael S. Tsirkin m...@redhat.com:
On Thu, Dec 16, 2010 at 04
On Thu, Dec 16, 2010 at 9:50 AM, Yoshiaki Tamura
tamura.yoshi...@lab.ntt.co.jp wrote:
2010/12/16 Michael S. Tsirkin m...@redhat.com:
On Thu, Dec 16, 2010 at 04:37:41PM +0900, Yoshiaki Tamura wrote:
2010/11/28 Yoshiaki Tamura tamura.yoshi...@lab.ntt.co.jp:
2010/11/28 Michael S. Tsirkin
On Wed, Dec 15, 2010 at 8:28 PM, jd jdsw2...@yahoo.com wrote:
We are pleased to announce availability of ConVirt 2.0.1 open
source. We would like to thank ConVirt user community for their
continuing participation and support. This release incorporates
feedback gathered from the community over
if there are disk timeouts
in the guest? This behavior appeared on almost all hosts (20) so I can
eliminate a single machine HW failure.
Christoph any pointers on how to debug this?
The backtraces from the original email are below:
Am Donnerstag, den 09.12.2010, 10:30 + schrieb Stefan Hajnoczi:
On Thu
On Mon, Nov 15, 2010 at 11:20 AM, Stefan Hajnoczi stefa...@gmail.com wrote:
On Sun, Nov 14, 2010 at 12:19 PM, Avi Kivity a...@redhat.com wrote:
On 11/14/2010 01:05 PM, Avi Kivity wrote:
I agree, but let's enable virtio-ioeventfd carefully because bad code
is out there.
Sure. Note as long
On Wed, Dec 1, 2010 at 12:30 PM, Avi Kivity a...@redhat.com wrote:
On 12/01/2010 01:44 PM, Stefan Hajnoczi wrote:
And, what about efficiency? As in bits/cycle?
We are running benchmarks with this latest patch and will report
results.
Full results here (thanks to Khoa Huynh
On Tue, Nov 30, 2010 at 9:50 AM, Yoshiaki Tamura
tamura.yoshi...@lab.ntt.co.jp wrote:
2010/11/29 Stefan Hajnoczi stefa...@gmail.com:
On Thu, Nov 25, 2010 at 6:06 AM, Yoshiaki Tamura
tamura.yoshi...@lab.ntt.co.jp wrote:
event-tap controls when to start FT transaction, and provides proxy
On Tue, Nov 30, 2010 at 12:58 PM, Dor Laor dl...@redhat.com wrote:
Please send in any agenda items you are interested in covering.
Juan already has a thread for agenda items. It includes:
As I forgot to put the call for agenda befor, Anthony already suggested:
- 2011 kvm conference
- 0.14.0
On Mon, Nov 29, 2010 at 2:00 AM, T Johnson tjohnso...@gmail.com wrote:
Hello,
On Thu, Nov 25, 2010 at 3:33 AM, Nikola Ciprich extmaill...@linuxbox.cz
wrote:
Hello Thomas,
I t hink blkio-cgroup really can't help You here, but since NFS is
network protocol,
why not just consider some kind
On Sat, Nov 27, 2010 at 1:11 PM, Yoshiaki Tamura
tamura.yoshi...@lab.ntt.co.jp wrote:
2010/11/27 Stefan Hajnoczi stefa...@gmail.com:
On Sat, Nov 27, 2010 at 8:53 AM, Yoshiaki Tamura
tamura.yoshi...@lab.ntt.co.jp wrote:
2010/11/27 Stefan Hajnoczi stefa...@gmail.com:
On Sat, Nov 27, 2010 at 4
On Thu, Nov 25, 2010 at 6:06 AM, Yoshiaki Tamura
tamura.yoshi...@lab.ntt.co.jp wrote:
event-tap controls when to start FT transaction, and provides proxy
functions to called from net/block devices. While FT transaction, it
queues up net/block requests, and flush them when the transaction gets
On Mon, Nov 29, 2010 at 3:00 PM, Yoshiaki Tamura
tamura.yoshi...@lab.ntt.co.jp wrote:
2010/11/29 Paul Brook p...@codesourcery.com:
If devices incorrectly claim support for live migration, then that should
also be fixed, either by removing the broken code or by making it work.
I totally
On Sat, Nov 27, 2010 at 8:53 AM, Yoshiaki Tamura
tamura.yoshi...@lab.ntt.co.jp wrote:
2010/11/27 Stefan Hajnoczi stefa...@gmail.com:
On Sat, Nov 27, 2010 at 4:29 AM, Yoshiaki Tamura
tamura.yoshi...@lab.ntt.co.jp wrote:
2010/11/27 Blue Swirl blauwir...@gmail.com:
On Thu, Nov 25, 2010 at 6:06
On Fri, Nov 26, 2010 at 8:47 AM, Jun Koi junkoi2...@gmail.com wrote:
this created a snapshot named test on my image. then i tried to start
the snapshot VM, like below:
qemu-system-x86_64 -m 2000 -vga std -usb -usbdevice tablet -localtime
-loadvm 2 -hda img.qcow2.win7_x64
but then i have a
On Fri, Nov 26, 2010 at 9:26 AM, Jun Koi junkoi2...@gmail.com wrote:
On Fri, Nov 26, 2010 at 5:18 PM, Stefan Hajnoczi stefa...@gmail.com wrote:
On Fri, Nov 26, 2010 at 8:47 AM, Jun Koi junkoi2...@gmail.com wrote:
this created a snapshot named test on my image. then i tried to start
On Fri, Nov 26, 2010 at 7:19 PM, Freddie Cash fjwc...@gmail.com wrote:
Within 2 weeks of booting, the host machine is using 2 GB of swap, and
disk I/O wait is through the roof. Restarting all of the VMs will
free up RAM, but restarting the whole box is the only way to get
performance back up.
On Fri, Nov 26, 2010 at 8:16 PM, Freddie Cash fjwc...@gmail.com wrote:
On Fri, Nov 26, 2010 at 12:04 PM, Stefan Hajnoczi stefa...@gmail.com wrote:
On Fri, Nov 26, 2010 at 7:19 PM, Freddie Cash fjwc...@gmail.com wrote:
Within 2 weeks of booting, the host machine is using 2 GB of swap, and
disk
On Fri, Nov 26, 2010 at 9:59 PM, Christian Brunner
c.m.brun...@gmail.com wrote:
Thanks for the review. What am I supposed to do now?
Kevin is the block maintainer. His review is the next step, I have
CCed him. After that rbd would be ready to merge.
Stefan
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to instrumentation patches. Perhaps
the instrumentation framework could be used (maybe with some changes)
for Kemari as well? That could be beneficial to both.
Yes. I had the same idea but I'm not sure how tracing works. I think
Stefan Hajnoczi knows it better.
Stefan, is it possible
On Tue, Nov 23, 2010 at 2:37 PM, Kevin Wolf kw...@redhat.com wrote:
Am 22.11.2010 14:55, schrieb Stefan Hajnoczi:
On Mon, Nov 22, 2010 at 1:38 PM, Juan Quintela quint...@redhat.com wrote:
Please send in any agenda items you are interested in covering.
QCOW2 performance roadmap:
* What can
On Mon, Nov 22, 2010 at 1:38 PM, Juan Quintela quint...@redhat.com wrote:
Please send in any agenda items you are interested in covering.
QCOW2 performance roadmap:
* What can be done to achieve near-raw image format performance?
* Benchmark results from an ideal QCOW2 model.
Stefan
--
To
On Mon, Nov 22, 2010 at 2:05 PM, Prasad Joshi
p.g.jo...@student.reading.ac.uk wrote:
I was under the impression that the each virtio driver will have a frontend
and backend part. The frontend part would be loaded in the Guest OS and the
backend driver will be loaded in the Host OS. These two
Reviewed-by: Stefan Hajnoczi stefa...@linux.vnet.ibm.com
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More majordomo info at http://vger.kernel.org/majordomo-info.html
On Tue, Nov 16, 2010 at 4:02 PM, Michael S. Tsirkin m...@redhat.com wrote:
On Fri, Nov 12, 2010 at 01:24:28PM +, Stefan Hajnoczi wrote:
Virtqueue notify is currently handled synchronously in userspace virtio.
This
prevents the vcpu from executing guest code while hardware emulation code
On Sun, Nov 14, 2010 at 12:19 PM, Avi Kivity a...@redhat.com wrote:
On 11/14/2010 01:05 PM, Avi Kivity wrote:
I agree, but let's enable virtio-ioeventfd carefully because bad code
is out there.
Sure. Note as long as the thread waiting on ioeventfd doesn't consume too
much cpu, it will
On Sun, Nov 14, 2010 at 10:34 AM, Avi Kivity a...@redhat.com wrote:
On 11/12/2010 11:20 AM, Stefan Hajnoczi wrote:
Who guarantees that less common virtio-blk and virtio-net guest drivers
for non-Linux OSes are fine with it? Maybe you should add a feature
flag
that the guest has
On Thu, Nov 11, 2010 at 3:53 PM, Michael S. Tsirkin m...@redhat.com wrote:
On Thu, Nov 11, 2010 at 01:47:21PM +, Stefan Hajnoczi wrote:
Care must be taken not to interfere with vhost-net, which already uses
ioeventfd host notifiers. The following list shows the behavior implemented
On Thu, Nov 11, 2010 at 4:45 PM, Christoph Hellwig h...@infradead.org wrote:
On Thu, Nov 11, 2010 at 01:47:21PM +, Stefan Hajnoczi wrote:
Some virtio devices are known to have guest drivers which expect a notify to
be
processed synchronously and spin waiting for completion. Only enable
On Fri, Nov 12, 2010 at 9:25 AM, Michael S. Tsirkin m...@redhat.com wrote:
On Fri, Nov 12, 2010 at 09:18:48AM +, Stefan Hajnoczi wrote:
On Thu, Nov 11, 2010 at 3:53 PM, Michael S. Tsirkin m...@redhat.com wrote:
On Thu, Nov 11, 2010 at 01:47:21PM +, Stefan Hajnoczi wrote:
Care must
- qemu_set_fd_handler(NULL), deassign host
notifiers
* virtio_pci_set_host_notifier(true) - qemu_set_fd_handler(NULL)
* virtio_pci_set_host_notifier(false) -
qemu_set_fd_handler(virtio_pci_host_notifier_read)
Signed-off-by: Stefan Hajnoczi stefa...@linux.vnet.ibm.com
---
hw/virtio-pci.c
to work.
Signed-off-by: Stefan Hajnoczi stefa...@linux.vnet.ibm.com
---
hw/virtio-pci.c |4
kvm-all.c | 46 ++
kvm-stub.c |5 +
kvm.h |1 +
4 files changed, 56 insertions(+), 0 deletions(-)
diff --git a/hw
The VirtIOPCIProxy bugs field is currently used to enable workarounds
for older guests. Rename it to flags so that other per-device behavior
can be tracked.
A later patch uses the flags field to remember whether ioeventfd should
be used for virtqueue host notification.
Signed-off-by: Stefan
On Fri, Nov 12, 2010 at 1:24 PM, Stefan Hajnoczi
stefa...@linux.vnet.ibm.com wrote:
@@ -1046,6 +1087,11 @@ int kvm_has_xcrs(void)
return kvm_state-xcrs;
}
+int kvm_has_many_ioeventfds(void)
+{
+ return kvm_state-many_ioeventfds;
+}
+
Missing if (!kvm_enabled()) { return 0
On Thu, Nov 11, 2010 at 12:17 PM, Prasad Joshi
p.g.jo...@student.reading.ac.uk wrote:
Though specifying the absolute path for source image worked for me.
Can any one please let me know the situation in which one would not want to
specify the absolute path?
How does relative path help?
This is a rewrite of the virtio-ioeventfd patchset to work at the virtio-pci.c
level instead of virtio.c. This results in better integration with the
host/guest notifier code and makes the code simpler (no more state machine).
Virtqueue notify is currently handled synchronously in userspace
- qemu_set_fd_handler(NULL), deassign host notifiers
* virtio_pci_set_host_notifier(true) - qemu_set_fd_handler(NULL)
* virtio_pci_set_host_notifier(false) -
qemu_set_fd_handler(virtio_pci_host_notifier_read)
Signed-off-by: Stefan Hajnoczi stefa...@linux.vnet.ibm.com
---
hw/virtio-pci.c | 155
The VirtIOPCIProxy bugs field is currently used to enable workarounds
for older guests. Rename it to flags so that other per-device behavior
can be tracked.
A later patch uses the flags field to remember whether ioeventfd should
be used for virtqueue host notification.
Signed-off-by: Stefan
to work.
Signed-off-by: Stefan Hajnoczi stefa...@linux.vnet.ibm.com
---
hw/virtio-pci.c |4
kvm-all.c | 46 ++
kvm-stub.c |5 +
kvm.h |1 +
4 files changed, 56 insertions(+), 0 deletions(-)
diff --git a/hw
On Fri, Oct 15, 2010 at 8:54 PM, Christian Brunner c...@muc.de wrote:
Hi,
once again, Yehuda committed fixes for all the suggestions made on the
list (and more). Here is the next update for the ceph/rbd block driver.
Please let us know if there are any pending issues.
For those who didn't
On Wed, Nov 10, 2010 at 10:08 AM, Prasad Joshi
p.g.jo...@student.reading.ac.uk wrote:
Where can I get the code of the qemu-kvm program?
I cloned the qemu-lvm git repository and compiled the code. But it looks like
qemu-kvm program is not part of this code.--
qemu-kvm.git contains the qemu-kvm
On Tue, Nov 9, 2010 at 8:06 PM, RaSca ra...@miamammausalinux.org wrote:
Today i saw this page:
http://www.linux-kvm.org/page/Guest_Support_Status
in which is explained how is better to run win2k on qcow2 images.
The page does not state that it is better to run Windows 2000 on
qcow2, it's
On Wed, Nov 10, 2010 at 12:40 PM, Prasad Joshi
p.g.jo...@student.reading.ac.uk wrote:
From: Stefan Hajnoczi [stefa...@gmail.com]
Sent: 10 November 2010 11:12
To: Prasad Joshi
Cc: Keqin Hong; kvm@vger.kernel.org
Subject: Re: Unable to start VM using COWed image
On Wed, Nov 10, 2010 at 10:08
Hi Michael,
I have looked into the way irqfd with msix mask notifiers works. From
what I can tell, the guest notifiers are enabled by vhost net in order
to hook up irqfds for the virtqueues. MSIX allows vectors to be
masked so there is a mmio write notifier in qemu-kvm to toggle the
irqfd and
On Tue, Nov 9, 2010 at 3:36 PM, Prasad Joshi
p.g.jo...@student.reading.ac.uk wrote:
Hello,
I am trying to run KVM machine from the image created as COW from the
original image. But it not working.
Screenshot that shows the KVM works with the original image
[r...@prasad images]# qemu-kvm
On Sun, Nov 7, 2010 at 4:07 PM, Hermann Himmelbauer du...@qwer.tk wrote:
Am Samstag 06 November 2010 20:58:12 schrieb Stefan Hajnoczi:
On Fri, Nov 5, 2010 at 5:16 PM, Hermann Himmelbauer du...@qwer.tk wrote:
I experience strange disk I/O stucks on my Linux Host + Guest with KVM,
which make
On Fri, Nov 5, 2010 at 5:16 PM, Hermann Himmelbauer du...@qwer.tk wrote:
I experience strange disk I/O stucks on my Linux Host + Guest with KVM, which
make the system (especially the guests) almost unusable. These stucks come
periodically, e.g. every 2 to 10 seconds and last between 3 and
On Wed, Oct 27, 2010 at 10:05 PM, Shirley Ma mashi...@us.ibm.com wrote:
This patch changes vhost TX used buffer signal to guest from one by
one to up to 3/4 of vring size. This change improves vhost TX message
size from 256 to 8K performance for both bandwidth and CPU utilization
without
On Thu, Oct 28, 2010 at 9:57 AM, Stefan Hajnoczi stefa...@gmail.com wrote:
Just read the patch 1/1 discussion and it looks like you're already on
it. Sorry for the noise.
Stefan
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/show_bug.cgi?id=646538.
Signed-off-by: Stefan Hajnoczi stefa...@linux.vnet.ibm.com
---
Here's a fix for the segfault.
block/qcow2.c |8 +---
1 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/block/qcow2.c b/block/qcow2.c
index ee3481b..0fceb0d 100644
--- a/block/qcow2.c
+++ b/block
On Tue, Oct 26, 2010 at 2:48 PM, Kevin Wolf kw...@redhat.com wrote:
Am 26.10.2010 15:23, schrieb Stefan Hajnoczi:
When an image is created with -o preallocate, ensure that we only call
preallocate() if the image was indeed opened successfully. Also use
bdrv_delete() instead of bdrv_close
On Tue, Oct 19, 2010 at 03:33:41PM +0200, Michael S. Tsirkin wrote:
Apologies if you receive this twice, the original message either
disappeared or was delayed somehow.
My main concern is with the fact that we add more state
in notifiers that can easily get out of sync with users.
If we
On Tue, Oct 19, 2010 at 03:33:41PM +0200, Michael S. Tsirkin wrote:
My main concern is with the fact that we add more state
in notifiers that can easily get out of sync with users.
If we absolutely need this state, let's try to at least
document the state machine, and make the API
for state
On Thu, Oct 21, 2010 at 11:49 PM, Nirmal Guhan vavat...@gmail.com wrote:
On Thu, Oct 21, 2010 at 9:23 AM, Nirmal Guhan vavat...@gmail.com wrote:
Hi,
Am trying to create a VM using qemu-kvm with two interfaces(fedora12
is the host and vm) and running into an issue. Given below is the
command
2010/10/22 Jean-Philippe Menil jean-philippe.me...@univ-nantes.fr:
i encounter the following problem, when i attempt to build qemu-kvm with the
--enable-io-thread option:
--enable-io-thread doesn't build in qemu-kvm.git. qemu-kvm.git has an
equivalent implemented and used automatically so you
On Tue, Oct 19, 2010 at 4:43 AM, Alex Davis alex14...@yahoo.com wrote:
Steps to reproduce:
) Download the first two Slackware-13.1 32-bit CD-ROM ISO images.
) Start KVM with the following command
qemu-system-x86_64 -m 1024M \
-cdrom full path of 1st install disk \
-boot d
) Hit
On Thu, Sep 30, 2010 at 03:01:52PM +0100, Stefan Hajnoczi wrote:
Virtqueue notify is currently handled synchronously in userspace virtio.
This prevents the vcpu from executing guest code while hardware
emulation code handles the notify.
On systems that support KVM, the ioeventfd mechanism
On Tue, Oct 19, 2010 at 2:33 PM, Anthony Liguori anth...@codemonkey.ws wrote:
On 10/19/2010 08:27 AM, Avi Kivity wrote:
On 10/19/2010 03:22 PM, Anthony Liguori wrote:
I had assumed that this would involve:
qemu -hda windows.img
(qemu) snapshot ide0-disk0 snap0.img
1) create snap0.img
On Tue, Oct 19, 2010 at 2:35 PM, Michael S. Tsirkin m...@redhat.com wrote:
On Tue, Oct 19, 2010 at 08:12:42AM -0500, Anthony Liguori wrote:
On 10/19/2010 08:07 AM, Stefan Hajnoczi wrote:
Is there anything stopping this patch from being merged?
Michael, any objections? If not, I'll merge
On Wed, Oct 13, 2010 at 12:18 AM, Christian Brunner c...@muc.de wrote:
+static int rbd_set_snapc(rados_pool_t pool, const char *snap, RbdHeader1
*header)
+{
+ uint32_t snap_count = header-snap_count;
+ rados_snap_t *snaps = NULL;
+ rados_snap_t seq;
+ uint32_t i;
+ uint64_t
On Fri, Oct 8, 2010 at 8:00 PM, Yehuda Sadeh yeh...@hq.newdream.net wrote:
No flush operation is supported. Can the guest be sure written data
is on stable storage when it receives completion?
+/*
+ * This aio completion is being called from rbd_aio_event_reader() and
+ * runs in qemu
On Sun, Oct 3, 2010 at 12:01 PM, Avi Kivity a...@redhat.com wrote:
On 09/30/2010 04:01 PM, Stefan Hajnoczi wrote:
Virtqueue notify is currently handled synchronously in userspace virtio.
This prevents the vcpu from executing guest code while hardware
emulation code handles the notify
Try this:
http://wiki.qemu.org/download/qemu-doc.html#vm_005fsnapshots
To list the snapshots in your QCOW2 image:
qemu-img snapshot -l myimage.qcow2
To revert the disk to a saved state:
qemu-img snapshot -a snapshot-name myimage.qcow2
Stefan
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Signed-off-by: Stefan Hajnoczi stefa...@linux.vnet.ibm.com
---
Small
On Thu, Sep 30, 2010 at 2:49 PM, Peter Doherty
dohe...@hkl.hms.harvard.edu wrote:
On Sep 30, 2010, at 04:31 , Stefan Hajnoczi wrote:
Try this:
http://wiki.qemu.org/download/qemu-doc.html#vm_005fsnapshots
To list the snapshots in your QCOW2 image:
qemu-img snapshot -l myimage.qcow2
On Tue, Sep 28, 2010 at 9:24 PM, Peter Doherty
dohe...@hkl.hms.harvard.edu wrote:
I thought I could do this with the qcow2 images.
I've used:
qemu-img snapshot -c snapname disk_image.qcow2
to create the snapshot.
It doesn't work. The snapshots claim to be created, but if I shut down the
On Sat, Sep 25, 2010 at 2:43 PM, Peter Lieven p...@dlh.net wrote:
we experience filesystem corruption using virtio-blk on some guest systems
togehter with XFS. We still use qemu-kvm 0.12.4.
[...]
It seems that 64-bit Ubuntu LTS 10.04.1 is affected as well as an older
openSuse 11.1 system
On Thu, Sep 23, 2010 at 3:40 PM, Christoph Adomeit
christoph.adom...@gatworks.de wrote:
Lets say my source machine has a qcow2 file with virtual size of 60 GB but
only 2 GB are in use. So the qcow2 file only has a size of 2 GB.
After block migration the resulting qcow2 file on the target
On Wed, Sep 22, 2010 at 1:11 PM, Rayson Ho r...@redhat.com wrote:
On Tue, 2010-09-21 at 14:33 +0100, Stefan Hajnoczi wrote:
I will see what other probes are useful for the end users. Also, are
there developer documentations for KVM? (I googled but found a lot of
presentations about KVM
On Wed, Sep 22, 2010 at 1:42 PM, Rayson Ho r...@redhat.com wrote:
On Wed, 2010-09-22 at 13:33 +0100, Stefan Hajnoczi wrote:
KVM does not generate code. Almost all the emulation code in the
source tree is part of the Tiny Code Generator (TCG) used when KVM is
not enabled (e.g. to emulate
On Tue, Sep 21, 2010 at 1:58 PM, Rayson Ho r...@redhat.com wrote:
On Mon, 2010-09-20 at 14:36 +0100, Stefan Hajnoczi wrote:
Right now there are few pre-defined probes (trace events in QEMU
tracing speak). As I develop I try to be mindful of new ones I create
and whether they would
On Mon, Sep 20, 2010 at 2:19 PM, Rayson Ho r...@redhat.com wrote:
On Wed, 2010-09-08 at 15:08 +0100, Stefan Hajnoczi wrote:
Hi Rayson,
For the KVM kernel module Linux trace events are already used. For
example, see arch/x86/kvm/trace.h and check out
/sys/kernel/debug/tracing/events/kvm
On Fri, Sep 17, 2010 at 5:56 PM, Daniel Bareiro daniel-lis...@gmx.net wrote:
I have some installations with Debian GNU/Linux Etch I'm migrating to
KVM. I just installed a kernel 2.6.26 from backports to use Virtio.
But when I try to boot the operating system, it can not find the vd*
device to
2010/9/16 Andre Przywara andre.przyw...@amd.com:
TOURNIER Frédéric wrote:
Ok, thanks for taking time.
I'll dig into your answers.
So as i run relative.img on diskless systems with original.img on nfs,
what are the best practice/tips i can use ?
I thinks it is -snapshot you are looking
On Fri, Sep 10, 2010 at 10:47 PM, H. Peter Anvin h...@linux.intel.com wrote:
diff --git a/hw/usb-audio.c b/hw/usb-audio.c
new file mode 100644
index 000..d4cf488
--- /dev/null
+++ b/hw/usb-audio.c
@@ -0,0 +1,702 @@
+/*
+ * QEMU USB Net devices
+ *
+ * Copyright (c) 2006 Thomas Sailer
On Wed, Sep 8, 2010 at 2:20 PM, Rayson Ho r...@redhat.com wrote:
Hi all,
I am a developer of Systemtap. I am looking into tracing KVM (the kernel
part and QEMU) and also the KVM guests with Systemtap. I googled and
found references to Xenprobes and xdt+dtrace, and I was wondering if
someone
On Tue, Aug 31, 2010 at 11:32 PM, Alex Williamson
alex.william...@redhat.com wrote:
On Tue, 2010-08-31 at 23:25 +0300, Michael S. Tsirkin wrote:
On Fri, Aug 27, 2010 at 04:37:45PM -0600, Alex Williamson wrote:
The bottom half handler shows big improvements over the timer
with few downsides,
On Fri, Aug 6, 2010 at 4:42 PM, Julien Desfossez j...@klipix.org wrote:
On [2] you can see a closer look of the state of the kvm threads (blue
means syscall, red means running in VM mode (vm_entry), dark yellow
means waiting for CPU).
This is a great visualization. It shows the state of the
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