Hello,
i've send a new patch which hopefully cares about all your comments.
[PATCH] rbd block driver fix race between aio completition and aio cancel
Greets
Stefan
Am 21.11.2012 10:07, schrieb Stefan Hajnoczi:
On Mon, Nov 19, 2012 at 09:39:45PM +0100, Stefan Priebe wrote:
@@ -376,9 +376,7
Hi Andreas,
thanks for your comment. Do i have to resend this patch?
--
Greets,
Stefan
Am 22.11.2012 17:40, schrieb Andreas Färber:
Am 22.11.2012 10:07, schrieb Stefan Priebe:
When acb-cmd is WRITE or DISCARD block/rbd stores rcb-size into acb-ret
Look here:
if (acb-cmd == RBD_AIO_WRITE
Signed-off-by: Stefan Priebe s.pri...@profihost.ag
Am 22.11.2012 10:07, schrieb Stefan Priebe:
When acb-cmd is WRITE or DISCARD block/rbd stores rcb-size into acb-ret
Look here:
if (acb-cmd == RBD_AIO_WRITE ||
acb-cmd == RBD_AIO_DISCARD) {
if (r 0) {
acb
Am 21.11.2012 09:26, schrieb Stefan Hajnoczi:
On Wed, Nov 21, 2012 at 08:47:16AM +0100, Stefan Priebe - Profihost AG wrote:
Am 21.11.2012 07:41, schrieb Stefan Hajnoczi:
We're going in circles here. I know the types are wrong in the code and
your patch fixes it, that's why I said it looks
Hello Stefan,
hello Paolo,
most of the ideas and removing the whole cancellation stuff came from
Paolo. Maybe he can comment also?
I would then make a new patch.
Greets,
Stefan
Am 21.11.2012 10:07, schrieb Stefan Hajnoczi:
On Mon, Nov 19, 2012 at 09:39:45PM +0100, Stefan Priebe wrote
Not sure about off_t. What is min and max size?
Stefan
Am 21.11.2012 um 18:03 schrieb Stefan Weil s...@weilnetz.de:
Am 20.11.2012 13:44, schrieb Stefan Priebe:
rbd / rados tends to return pretty often length of writes
or discarded blocks. These values might be bigger than int.
Signed-off
rbd / rados tends to return pretty often length of writes
or discarded blocks. These values might be bigger than int.
Signed-off-by: Stefan Priebe s.pri...@profihost.ag
---
block/rbd.c |4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/block/rbd.c b/block/rbd.c
index
Hi Stefan,
Am 20.11.2012 17:29, schrieb Stefan Hajnoczi:
On Tue, Nov 20, 2012 at 01:44:55PM +0100, Stefan Priebe wrote:
rbd / rados tends to return pretty often length of writes
or discarded blocks. These values might be bigger than int.
Signed-off-by: Stefan Priebe s.pri...@profihost.ag
Am 21.11.2012 07:41, schrieb Stefan Hajnoczi:
On Tue, Nov 20, 2012 at 8:16 PM, Stefan Priebe s.pri...@profihost.ag wrote:
Hi Stefan,
Am 20.11.2012 17:29, schrieb Stefan Hajnoczi:
On Tue, Nov 20, 2012 at 01:44:55PM +0100, Stefan Priebe wrote:
rbd / rados tends to return pretty often length
Hi Paolo,
Am 19.11.2012 09:10, schrieb Paolo Bonzini:
I'm sorry the discard requests aren't failing. Qemu / Block driver
starts to cancel a bunch of requests.
That is being done in the kernel (the guest, I think) because the UNMAPs
are taking too long.
That makes sense. RBD handles discards
Am 19.11.2012 10:54, schrieb Paolo Bonzini:
Il 19/11/2012 10:36, Stefan Priebe - Profihost AG ha scritto:
Hi Paolo,
Am 19.11.2012 09:10, schrieb Paolo Bonzini:
I'm sorry the discard requests aren't failing. Qemu / Block driver
starts to cancel a bunch of requests.
That is being done
Am 19.11.2012 11:06, schrieb Paolo Bonzini:
Il 19/11/2012 10:59, Stefan Priebe - Profihost AG ha scritto:
Do you know what is the correct way?
I think the correct fix is to serialize them in the kernel.
So you mean this is not a bug in rbd or qemu this is a general bug in
the linux kernel
Am 19.11.2012 11:23, schrieb Paolo Bonzini:
Il 19/11/2012 11:13, Stefan Priebe - Profihost AG ha scritto:
So you mean this is not a bug in rbd or qemu this is a general bug in
the linux kernel since they implemented discard?
Yes.
As you're known in the linux dev community ;-) Might you
Yeah thats my old thread regarding iscsi und unmap but this works fine
now since you patched qemu.
Stefan
Am 19.11.2012 11:36, schrieb Paolo Bonzini:
Il 19/11/2012 11:30, Stefan Priebe - Profihost AG ha scritto:
But do you have any idea why it works with an iscsi / libiscsi backend
Am 19.11.2012 12:16, schrieb Paolo Bonzini:
Il 19/11/2012 11:57, Stefan Priebe - Profihost AG ha scritto:
Yeah thats my old thread regarding iscsi und unmap but this works fine
now since you patched qemu.
It still causes hangs no? Though it works apart from that.
iscsi/libiscsi
Am 19.11.2012 13:24, schrieb Paolo Bonzini:
Il 19/11/2012 12:49, Stefan Priebe - Profihost AG ha scritto:
It still causes hangs no? Though it works apart from that.
iscsi/libiscsi and discards works fine since your latest patches:
1bd075f29ea6d11853475c7c42734595720c3ac6
.
Greets,
Stefan
Am 19.11.2012 14:06, schrieb Paolo Bonzini:
Il 19/11/2012 14:01, Stefan Priebe - Profihost AG ha scritto:
The right behavior is to return
only after the target says whether the cancellation was done or not.
For libiscsi, it was implemented by the commits you mention.
So the whole bunch
Hi Paolo,
this is my current work status on porting these fixes to rbd. Right now
the discards get still canceled by the client kernel.
Might you have a look what i have forgotten?
Thanks!
Stefan
Am 19.11.2012 14:06, schrieb Paolo Bonzini:
Il 19/11/2012 14:01, Stefan Priebe - Profihost AG
Am 19.11.2012 15:41, schrieb Paolo Bonzini:
Il 19/11/2012 15:28, Stefan Priebe - Profihost AG ha scritto:
typedef struct RADOSCB {
@@ -376,6 +377,10 @@ static void qemu_rbd_complete_aio(RADOSCB *rcb)
RBDAIOCB *acb = rcb-acb;
int64_t r;
+if (acb-bh) {
+return
Mon Sep 17 00:00:00 2001
From: Stefan Priebe s.pri...@profhost.ag
Date: Mon, 19 Nov 2012 15:54:05 +0100
Subject: [PATCH] fix cancel rbd race
Signed-off-by: Stefan Priebe s.pri...@profhost.ag
---
block/rbd.c | 19 ---
1 file changed, 12 insertions(+), 7 deletions(-)
diff --git
Am 19.11.2012 16:22, schrieb Paolo Bonzini:
Il 19/11/2012 16:04, Stefan Priebe - Profihost AG ha scritto:
[ 49.183366] sd 2:0:0:1: [sdb]
[ 49.183366] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[ 49.183366] sd 2:0:0:1: [sdb]
[ 49.183366] Sense Key : Aborted Command [current
From: Stefan Priebe s.pri...@profhost.ag
This one fixes a race qemu also had in iscsi block driver between
cancellation and io completition.
qemu_rbd_aio_cancel was not synchronously waiting for the end of
the command.
It also removes the useless cancelled flag and introduces instead
a status
From Stefan Priebe s.pri...@profihost.ag # This line is ignored.
From: Stefan Priebe s.pri...@profihost.ag
Cc: pve-de...@pve.proxmox.com
Cc: pbonz...@redhat.com
Cc: ceph-de...@vger.kernel.org
Subject: QEMU/PATCH: rbd block driver: fix race between completition and cancel
In-Reply-To:
ve-de
Hi Paolo,
Am 06.11.2012 23:42, schrieb Paolo Bonzini:
i wantes to use scsi unmap with rbd. rbd documention says you need to
set discard_granularity=512 for the device. I'm using qemu 1.2.
If i set this and send an UNMAP command i get this kernel output:
The discard request is failing.
Am 06.11.2012 23:42, schrieb Paolo Bonzini:
i wantes to use scsi unmap with rbd. rbd documention says you need to
set discard_granularity=512 for the device. I'm using qemu 1.2.
If i set this and send an UNMAP command i get this kernel output:
The discard request is failing. Please check
Hello list,
i wantes to use scsi unmap with rbd. rbd documention says you need to
set discard_granularity=512 for the device. I'm using qemu 1.2.
If i set this and send an UNMAP command i get this kernel output:
Sense Key : Aborted Command [current]
sd 2:0:0:1: [sdb]
Add. Sense: I/O process
. Sense: I/O process terminated
[ 75.500374] sd 2:0:0:4: [sdc] CDB:
[ 75.500374] Write same(16): 93 08 00 00 00 00 03 7f ff f9 00 7f ff ff
00 00
[ 75.500374] end_request: I/O error, dev sdc, sector 58720249
Stefan
Am 02.11.2012 09:20, schrieb Stefan Priebe - Profihost AG:
Am 02.11.2012 00:36
Hello list,
i'm running kvm 1.2 on vanilla 3.6.3 kernel.
I'm trying to understand the memory usage and the migration speed.
I've a VM which does nothing else than running OpenSSH and a cron job
every minute to write a small json file.
When the VM is freshly started Host shows 300MB memory
Hello list,
i'm using 1.2 stable and wanted to use xbzrle but xbzrle is extremely slow.
While trying to transfer a simple VM with 4GB memory through a 10GBe nic
while running a MySQL (with NO LOAD) it takes up to 10 - 15 minutes.
Remaining is often jumping or just lowering pretty slow.
Is
Am 25.10.2012 11:44, schrieb Orit Wasserman:
Is this known or is something wrong?
My guess this workload migrates fine without XBZRLE so it is not the speed or
downtime :).
it could be that the cache size is too small resulting with a lot of cache
misses which means
XBZRLE makes things worse
Am 25.10.2012 13:39, schrieb Orit Wasserman:
On 10/25/2012 12:35 PM, Stefan Priebe - Profihost AG wrote:
Am 25.10.2012 11:44, schrieb Orit Wasserman:
Is this known or is something wrong?
My guess this workload migrates fine without XBZRLE so it is not the speed or
downtime :).
it could
Am 25.10.2012 15:15, schrieb Orit Wasserman:
Looks like a lot of cache miss, you can try increasing the cache size
(migrate_set_cache_size).
But you should remember that for an idle guest XBZRLE is wasteful,
it is useful for workload that changes the same memory pages frequently.
sure here
Hello list,
what is the status of CPU hotplug support?
I tried latest 1.2rc1 kvm-qemu with vanilla kernel v3.5.2 but the VM
just crashes when sending cpu_set X online through qm monitor.
Greets,
Stefan
Am 30.08.2012 um 17:41 schrieb Andreas Färber afaer...@suse.de:
Hello,
Am 30.08.2012 11:06, schrieb Stefan Priebe:
I tried latest 1.2rc1 kvm-qemu with vanilla kernel v3.5.2 but the VM
just crashes when sending cpu_set X online through qm monitor.
For SLES we're carrying a patch
Am 30.08.2012 18:43, schrieb Andreas Färber:
Am 30.08.2012 18:35, schrieb Stefan Priebe:
Am 30.08.2012 um 17:41 schrieb Andreas Färber afaer...@suse.de:
Am 30.08.2012 11:06, schrieb Stefan Priebe:
I tried latest 1.2rc1 kvm-qemu with vanilla kernel v3.5.2 but the VM
just crashes when sending
Am 30.08.2012 20:40, schrieb Igor Mammedov:
Am 30.08.2012 um 17:41 schrieb Andreas Färber afaer...@suse.de:
Am 30.08.2012 11:06, schrieb Stefan Priebe:
I tried latest 1.2rc1 kvm-qemu with vanilla kernel v3.5.2 but the VM
just crashes when sending cpu_set X online through qm monitor
Am 30.08.2012 20:56, schrieb Igor Mammedov:
On Thu, 30 Aug 2012 20:45:10 +0200
Stefan Priebe s.pri...@profihost.ag wrote:
Am 30.08.2012 20:40, schrieb Igor Mammedov:
Am 30.08.2012 um 17:41 schrieb Andreas Färber afaer...@suse.de:
Am 30.08.2012 11:06, schrieb Stefan Priebe:
I tried latest
Am 21.08.2012 00:36, schrieb ronnie sahlberg:
On Mon, Aug 20, 2012 at 6:12 PM, Stefan Priebe - Profihost AG
s.pri...@profihost.ag wrote:
Hi Ronnie,
Am 20.08.2012 10:08, schrieb Paolo Bonzini:
That's because the big QEMU lock is held by the thread that called
qemu_aio_cancel.
and i also see
Am 20.08.2012 09:22, schrieb Paolo Bonzini:
Il 19/08/2012 21:22, Stefan Priebe - Profihost AG ha scritto:
No problem, my fault---I'm just back and I haven't really started again
all my stuff, so the patch was not tested.
This should fix it, though.
Booting works fine now. But the VM starts
Hi Ronnie,
Am 20.08.2012 10:08, schrieb Paolo Bonzini:
That's because the big QEMU lock is held by the thread that called
qemu_aio_cancel.
and i also see
no cancellation message in kernel log.
And that's because the UNMAP actually ultimately succeeds. You'll
probably see soft lockup
Hi Paolo,
Am 18.08.2012 23:49, schrieb Paolo Bonzini:
Hi Stefan,
this is my version of your patch. I think the flow of the code is a
bit simpler (or at least matches other implementations of cancellation).
Can you test it on your test case?
I'm really sorry but your patch doesn't work at all.
Am 19.08.2012 15:11, schrieb Paolo Bonzini:
No problem, my fault---I'm just back and I haven't really started again
all my stuff, so the patch was not tested.
This should fix it, though.
Booting works fine now. But the VM starts to hang after trying to unmap
large regions. No segfault or so
---
block/iscsi.c | 55 +++
1 files changed, 23 insertions(+), 32 deletions(-)
diff --git a/block/iscsi.c b/block/iscsi.c
index 12ca76d..1c8b049 100644
--- a/block/iscsi.c
+++ b/block/iscsi.c
@@ -76,6 +76,10 @@ static void
This patch fixes two main issues with block/iscsi.c:
1.) iscsi_task_mgmt_abort_task_async calls iscsi_scsi_task_cancel which was
also directly
called in iscsi_aio_cancel
2.) a race between task completition and task abortion could happen cause the
scsi_free_scsi_task
were done before
Signed-off-by: Stefan Priebe s.pri...@profihost.ag
---
block/iscsi.c | 55 +++
1 files changed, 23 insertions(+), 32 deletions(-)
diff --git a/block/iscsi.c b/block/iscsi.c
index 12ca76d..1c8b049 100644
--- a/block/iscsi.c
+++ b/block
iscsi_schedule_bh has finished
GIT: [PATCH] PATCH V2: fix NULL dereferences / races between task
completition and abort
Am 15.08.2012 09:09, schrieb Stefan Priebe:
Signed-off-by: Stefan Priebe s.pri...@profihost.ag
---
block/iscsi.c | 55
From: spriebe g...@profihost.ag
---
block/iscsi.c | 36
1 files changed, 20 insertions(+), 16 deletions(-)
diff --git a/block/iscsi.c b/block/iscsi.c
index 12ca76d..257f97f 100644
--- a/block/iscsi.c
+++ b/block/iscsi.c
@@ -76,6 +76,10 @@ static void
Am 14.08.2012 16:08, schrieb Kevin Wolf:
Am 14.08.2012 14:11, schrieb Stefan Hajnoczi:
On Tue, Aug 14, 2012 at 1:09 PM, ronnie sahlberg
ronniesahlb...@gmail.com wrote:
Is a reply with the text
Acked-by: Ronnie Sahlberg ronniesahlb...@gmail.com
sufficient ?
Yes
But is this only meant as a
This patch fixes a race and some segfaults which i discovered while testing
scsi-generic
and unmapping with libiscsi.
The first problem is that in iscsi_aio_cancel iscsi_scsi_task_cancel and
iscsi_task_mgmt_abort_task_async got called but
iscsi_task_mgmt_abort_task_async already
calls
Signed-off-by: Stefan Priebe s.pri...@profihost.ag
---
block/iscsi.c | 55 +++
1 files changed, 23 insertions(+), 32 deletions(-)
diff --git a/block/iscsi.c b/block/iscsi.c
index 12ca76d..1c8b049 100644
--- a/block/iscsi.c
+++ b/block
virtio-scsi is now working fine. Could you please help me to get discard
/ trim running? I can't find any information what is needed to get
discard / trim working.
Thanks,
Stefan
Am 09.08.2012 12:17, schrieb Stefan Priebe - Profihost AG:
That looks better - thanks for the hint. But now
I'm using iscsi. So no raw or qcow2. XFS as FS.
Thanks,
Stefan
Am 10.08.2012 12:20, schrieb Paolo Bonzini:
Il 10/08/2012 11:22, Stefan Priebe - Profihost AG ha scritto:
virtio-scsi is now working fine. Could you please help me to get discard
/ trim running? I can't find any information what
VM start command was:
http://pastebin.com/raw.php?i=6WNLPemy
Stefan
Am 10.08.2012 12:30, schrieb Paolo Bonzini:
Il 10/08/2012 12:28, Stefan Priebe - Profihost AG ha scritto:
I'm using iscsi. So no raw or qcow2.
Ok, then you need to use scsi-block as your device instead of scsi-disk
or scsi-hd
it. But i'm using virtio-scsi-pci? I'm
really sorry to ask so many questions.
Stefan
Am 10.08.2012 13:20, schrieb ronnie sahlberg:
On Fri, Aug 10, 2012 at 8:30 PM, Paolo Bonzini pbonz...@redhat.com wrote:
Il 10/08/2012 12:28, Stefan Priebe - Profihost AG ha scritto:
I'm using iscsi. So no raw or qcow2
Am 10.08.2012 13:12, schrieb ronnie sahlberg:
You want discard to work?
Yes
You are using qemu 1.0 ?
actual qemu-kvm git
So you dont have the qemu support for scsi-generic passthrough to iscsi devices.
Why?
I think you need to run the target on linux 3.2 or later kernels using
ext4/xfs
Am 10.08.2012 14:04, schrieb ronnie sahlberg:
On Fri, Aug 10, 2012 at 9:57 PM, Stefan Priebe - Profihost AG
s.pri...@profihost.ag wrote:
Am 10.08.2012 13:12, schrieb ronnie sahlberg:
You want discard to work?
Yes
You are using qemu 1.0 ?
actual qemu-kvm git
So you dont have the qemu
Am 10.08.2012 14:24, schrieb ronnie sahlberg:
On Fri, Aug 10, 2012 at 10:14 PM, Stefan Priebe - Profihost AG
s.pri...@profihost.ag wrote:
I dont know the kvm version numbers.
They're the same as qemu.
But you can check the file
block/iscsi.c for the version you use
it iscsi-aware
then use the commandssg_unmap to try to unmap regions and
sg_get_lba_status to check that the regions are now unmapped.
On Fri, Aug 10, 2012 at 9:54 PM, Stefan Priebe - Profihost AG
s.pri...@profihost.ag wrote:
http://www.nexenta.com/corp/products/what-is-openstorage
Hi Paolo,
Am 10.08.2012 14:39, schrieb Paolo Bonzini:
Il 10/08/2012 14:35, Stefan Priebe - Profihost AG ha scritto:
One way to activate passthough is via scsi-generic:
Example:
-device lsi -device scsi-generic,drive=MyISCSI \
-drive file=iscsi://10.1.1.125
, Stefan Priebe ha scritto:
Hello list,
i wanted to start using virtio-scsi instead of virtio-blk, cause it
offers the possibility to use discard / trim support.
Kernel: 3.5.0 on host and guest
Qemu-kvm: 1.1.1 stable
But i'm not seeing the same or nearly the same speed:
1) How did you start
Yes should be possible. guest is Debian or Ubuntu. I couldn't find a tag for
V1.1.1 which I ran from source. So where to start bisect?
Stefan
Am 09.08.2012 um 09:01 schrieb Paolo Bonzini pbonz...@redhat.com:
Il 09/08/2012 08:13, Stefan Priebe ha scritto:
i really would like to test
09/08/2012 09:07, Stefan Priebe ha scritto:
Yes should be possible. guest is Debian or Ubuntu. I couldn't find a
tag for V1.1.1 which I ran from source. So where to start bisect?
You can start from the v1.1.0 tag.
Can you give the command line, perhaps it is enough to reproduce?
Paolo
Stefan
@writethrough: why not?
@libiscsi Same speed problem with cache=none and with just local lvm disks.
Stefan
Am 09.08.2012 um 09:53 schrieb Paolo Bonzini pbonz...@redhat.com:
Il 09/08/2012 09:41, Stefan Priebe ha scritto:
-drive
file=iscsi://10.0.255.100/iqn.1986-03.com.sun:02:8a9019a4-4aa3
That looks better - thanks for the hint. But now network isn't working
at all ;-(
Stefan
Am 09.08.2012 11:18, schrieb Stefan Hajnoczi:
On Thu, Aug 9, 2012 at 8:41 AM, Stefan Priebe s.pri...@profihost.ag wrote:
starting line:
/usr/bin/qemu-x86_64 -chardev
socket,id=qmp,path=/var/run/qemu
Am 09.08.2012 13:04, schrieb Stefan Hajnoczi:
On Thu, Aug 9, 2012 at 11:17 AM, Stefan Priebe - Profihost AG
s.pri...@profihost.ag wrote:
That looks better - thanks for the hint. But now network isn't working at
all ;-(
You need to have commit 26b9b5fe17cc1b6be2e8bf8b9d16094f420bb8ad
(virtio
read : io=5748MB, bw=570178KB/s, iops=139, runt= 10323msec
Stefan
Am 09.08.2012 13:04, schrieb Stefan Hajnoczi:
On Thu, Aug 9, 2012 at 11:17 AM, Stefan Priebe - Profihost AG
s.pri...@profihost.ag wrote:
That looks better - thanks for the hint. But now network isn't working at
all ;-(
You need
Am 09.08.2012 14:19, schrieb Paolo Bonzini:
Il 09/08/2012 14:08, Stefan Priebe - Profihost AG ha scritto:
virtio-scsi:
rand 4k:
write: io=822448KB, bw=82228KB/s, iops=20557, runt= 10002msec
read : io=950920KB, bw=94694KB/s, iops=23673, runt= 10042msec
seq:
write: io=2436MB, bw
Am 09.08.2012 15:42, schrieb Paolo Bonzini:
Il 09/08/2012 15:39, Stefan Priebe - Profihost AG ha scritto:
scsi-generic would indeed incur some overhead because it does not do
scatter/gather I/O directly, but scsi-hd/scsi-block do not have this
overhead. In any case, that should be visible
Am 09.08.2012 15:42, schrieb Paolo Bonzini:
Il 09/08/2012 15:39, Stefan Priebe - Profihost AG ha scritto:
scsi-generic would indeed incur some overhead because it does not do
scatter/gather I/O directly, but scsi-hd/scsi-block do not have this
overhead. In any case, that should be visible
Am 09.08.2012 15:15, schrieb Paolo Bonzini:
Il 09/08/2012 14:52, ronnie sahlberg ha scritto:
guest uses noop right now. Disk Host is nexentastor running open solaris. I
use libiscsi right now so the disks are not visible in both cases
(virtio-blk and virtio-scsi) to the host right now.
And
OK VMs do work fine now. Sorry for missing the patch after switching to
qemu-kvm.
Am 09.08.2012 14:44, schrieb Paolo Bonzini:
Ok, try deadline in the guest then. Using noop amplifies bad
performance, because you lose request merging. With no host scheduler,
as is the case with libiscsi, noop
Hello list,
i tried to find out how to be able to use trim / discard. So my storage
can free unusedblocks.
But i wasn't able to find out which virtio block devices support trim /
discard and what else is needed.
Thanks and Greets,
Stefan
ah OK - thanks. Will there be a fixed 1.1.2 as well?
Stefan
Am 08.08.2012 10:06, schrieb Stefan Hajnoczi:
On Wed, Aug 08, 2012 at 07:51:07AM +0200, Stefan Priebe wrote:
Any news? Was this applied upstream?
Kevin is ill. He has asked me to review and test patches in his
absence. When he
Hello list,
i wanted to start using virtio-scsi instead of virtio-blk, cause it
offers the possibility to use discard / trim support.
Kernel: 3.5.0 on host and guest
Qemu-kvm: 1.1.1 stable
But i'm not seeing the same or nearly the same speed:
virtio-scsi:
rand. 4k:
write: io=677628KB,
Yes cache none. Is there a bugfix for 1.1.1?
Stefan
Am 08.08.2012 um 18:17 schrieb Paolo Bonzini pbonz...@redhat.com:
Il 08/08/2012 17:21, Stefan Priebe ha scritto:
Hello list,
i wanted to start using virtio-scsi instead of virtio-blk, cause it
offers the possibility to use discard / trim
Public bug reported:
qemu-kvm 1.1.1 stable is running fine for me with RHEL 6 2.6.32 based
kernel.
But with 3.5.0 kernel qemu-system-x86_64 segfaults while i'm trying to
install ubuntu 12.04 server reproducable.
You find three backtraces here:
http://pastebin.com/raw.php?i=xCy2pEcP
Stefan
**
can confirm - this fixed it!
Am 06.08.2012 14:37, schrieb Avi Kivity:
On 08/06/2012 03:12 PM, Avi Kivity wrote:
On 08/06/2012 11:46 AM, Stefan Priebe - Profihost AG wrote:
But still i got the segfault and core dump - this is my main problem? I
mean qemu-kvm master isn't declared as stable. So
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