Il 25/07/2012 00:34, Nicholas A. Bellinger ha scritto:
> From: Stefan Hajnoczi
>
> This patch adds a new type of host device that drives the vhost_scsi
> device. The syntax to add vhost-scsi is:
>
> qemu -vhost-scsi id=vhost-scsi0,wwpn=...,tpgt=123
>
> The virtio-scsi emulated device will ma
Il 25/07/2012 00:33, Nicholas A. Bellinger ha scritto:
> +int event_notifier_notify(EventNotifier *e)
> +{
> +uint64_t value = 1;
> +int r;
> +
> +assert(event_notifier_valid(e));
> +r = write(e->fd, &value, sizeof(value));
> +if (r < 0) {
> +return -errno;
> +}
> +
Il 25/07/2012 00:33, Nicholas A. Bellinger ha scritto:
> From: Stefan Hajnoczi
>
> Normally host notifiers are only used together with vhost-net in KVM
> mode. It is occassionally useful to use vhost with TCG mode, mainly for
> testing and development. This isn't hard to achieve, simply fall ba
IM 2013
The 13th IFIP/IEEE Symposium on Integrated Network and Service Management
Ghent, Belgium, 27-31 May 2013
http://www.im2013.org/
(Paper Submission Date: 16 August 2012)
"Smart Management in a Virtualized World"
The 13th IFIP/IEEE Symposium on Integrated Network and Service Manageme
On Tue, 24 Jul 2012 15:01:59 +0200, Sasha Levin wrote:
> virtio on it's own was introduced to help solve the fragmentation
> around virtualized devices, so I don't think that the main purpose of
> doing virtio drivers is due to any performance benefits virtio may
> provide.
There's one argument i
On Wed, Jul 25, 2012 at 6:33 AM, Nicholas A. Bellinger
wrote:
> From: Nicholas Bellinger
>
> Hi Anthony + QEMU storage folks,
>
> The following is a reviewable RFC series of vhost-scsi against yesterday's
> QEMU.git/master @ commit 401a66357d.
>
> The series is available directly from:
>
> git:
From: Stefan Hajnoczi
This patch adds a new type of host device that drives the vhost_scsi
device. The syntax to add vhost-scsi is:
qemu -vhost-scsi id=vhost-scsi0,wwpn=...,tpgt=123
The virtio-scsi emulated device will make use of vhost-scsi to process
virtio-scsi requests inside the kernel
From: Nicholas Bellinger
This QEMU patch sets VirtIOSCSIConfig->max_target=0 for vhost-scsi operation
to restrict virtio-scsi LLD guest scanning to max_id=0 (a single target ID
instance) when connected to individual tcm_vhost endpoints.
This ensures that virtio-scsi LLD only attempts to scan tar
From: Stefan Hajnoczi
This patch starts and stops vhost as the virtio device transitions
through its status phases. Vhost can only be started once the guest
reports its driver has successfully initialized, which means the
virtqueues have been set up by the guest.
(v2: Squash virtio-scsi: use th
From: Stefan Hajnoczi
Begin adding vhost support by opening /dev/vhost-scsi.
(v2: Drop legacy ->vhost_vqs[] usage)
Signed-off-by: Stefan Hajnoczi
Signed-off-by: Zhi Yong Wu
Cc: Michael S. Tsirkin
Cc: Paolo Bonzini
Signed-off-by: Nicholas Bellinger
---
hw/virtio-scsi.c | 12
From: Stefan Hajnoczi
A vhost-scsi device must be bound to a tcm_vhost target port. This will
be done by issuing an ioctl to the device with the wwpn and tgpt. This
patch adds these properties to the virtio-scsi-pci device:
qemu -device virtio-scsi-pci,wwpn=$TARGET_WWN,tgpt=$TPGT
Future pat
From: Stefan Hajnoczi
The path to /dev/vhost-net is currently hardcoded in vhost_dev_init().
This needs to be changed so that /dev/vhost-scsi can be used. Pass in
the device path instead of hardcoding it.
Signed-off-by: Stefan Hajnoczi
Cc: Paolo Bonzini
Cc: Michael S. Tsirkin
Signed-off-by:
From: Stefan Hajnoczi
For sanity assert that event notification succeeds.
Signed-off-by: Stefan Hajnoczi
Cc: Anthony Liguori
Cc: Paolo Bonzini
Signed-off-by: Nicholas Bellinger
---
hw/virtio-pci.c |5 -
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/hw/virtio-pci.c b
From: Stefan Hajnoczi
Normally host notifiers are only used together with vhost-net in KVM
mode. It is occassionally useful to use vhost with TCG mode, mainly for
testing and development. This isn't hard to achieve, simply fall back
to notifying the host notifier manually from qemu if KVM mode
From: Stefan Hajnoczi
Event notifiers that have not had the event_notifier_init() function
called on them are invalid. The event_notifier_valid() function checks
whether or not an event notifier is valild. This can be used to check
whether a notifier is in use or not.
It sometimes useful to no
From: Nicholas Bellinger
Hi Anthony + QEMU storage folks,
The following is a reviewable RFC series of vhost-scsi against yesterday's
QEMU.git/master @ commit 401a66357d.
The series is available directly from:
git://git.kernel.org/pub/scm/virt/kvm/nab/qemu-kvm.git vhost-scsi-merge
It contain
On Mon, 2012-07-23 at 18:56 -0700, Greg Kroah-Hartman wrote:
> On Tue, Jul 24, 2012 at 01:26:20AM +, Nicholas A. Bellinger wrote:
> > From: Nicholas Bellinger
> >
> > As requested by Anthony, here is a patch against
> > target-pending/for-next-merge
> > to expose an ABI version to userspace
On Tue, Jul 24, 2012 at 2:36 AM, Yoshihiro YUNOMAE
wrote:
> Hi All,
>
> The following patch set provides a low-overhead system for collecting kernel
> tracing data of guests by a host in a virtualization environment.
>
> A guest OS generally shares some devices with other guests or a host, so
> re
(2012/07/24 19:02), Stefan Hajnoczi wrote:
> On Tue, Jul 24, 2012 at 3:36 AM, Yoshihiro YUNOMAE
> wrote:
>> The performance of each method is compared as follows:
>> [1] Native
>> - only recording trace data to ring-buffer on a guest
>> [2] Virtio-trace
>> - running a trace agent on a
(2012/07/24 11:36), Yoshihiro YUNOMAE wrote:
> Therefore, we propose a new system "virtio-trace", which uses enhanced
> virtio-serial and existing ring-buffer of ftrace, for collecting guest kernel
> tracing data. In this system, there are 5 main components:
> (1) Ring-buffer of ftrace in a guest
On Tue, Jul 24, 2012 at 01:26:20AM +, Nicholas A. Bellinger wrote:
> From: Nicholas Bellinger
>
> As requested by Anthony, here is a patch against target-pending/for-next-merge
> to expose an ABI version to userspace via a new VHOST_SCSI_GET_ABI_VERSION
> ioctl operation.
>
> As mentioned in
On Tue, Jul 24, 2012 at 12:03 PM, Masami Hiramatsu
wrote:
> (2012/07/24 19:02), Stefan Hajnoczi wrote:
>> On Tue, Jul 24, 2012 at 3:36 AM, Yoshihiro YUNOMAE
>> wrote:
>>> The performance of each method is compared as follows:
>>> [1] Native
>>> - only recording trace data to ring-buffer on
On Tue, Jul 24, 2012 at 12:19 PM, Yoshihiro YUNOMAE
wrote:
>>> Are you using text formatted ftrace?
> No, currently using raw format, but　we'd like to reformat it in text.
Capturing the info necessary to translate numbers into symbols is one
of the problems of host<->guest tracing so I'm curious
On 07/24/2012 02:46 PM, Dor Laor wrote:
> On 07/24/2012 03:30 PM, Sasha Levin wrote:
>> On 07/24/2012 10:26 AM, Dor Laor wrote:
>>> On 07/24/2012 07:55 AM, Rusty Russell wrote:
On Mon, 23 Jul 2012 22:32:39 +0200, Sasha Levin
wrote:
> As it was discussed recently, there's currently n
On 07/24/2012 03:30 PM, Sasha Levin wrote:
On 07/24/2012 10:26 AM, Dor Laor wrote:
On 07/24/2012 07:55 AM, Rusty Russell wrote:
On Mon, 23 Jul 2012 22:32:39 +0200, Sasha Levin wrote:
As it was discussed recently, there's currently no way for the guest to notify
the host about panics. Further
On Tue, Jul 24, 2012 at 02:31:25PM +0200, Sasha Levin wrote:
> On 07/24/2012 02:28 PM, Gleb Natapov wrote:
> > On Tue, Jul 24, 2012 at 02:26:33PM +0200, Sasha Levin wrote:
> >> On 07/24/2012 09:44 AM, Gleb Natapov wrote:
> >>> On Mon, Jul 23, 2012 at 10:32:39PM +0200, Sasha Levin wrote:
> As i
On 07/24/2012 02:28 PM, Gleb Natapov wrote:
> On Tue, Jul 24, 2012 at 02:26:33PM +0200, Sasha Levin wrote:
>> On 07/24/2012 09:44 AM, Gleb Natapov wrote:
>>> On Mon, Jul 23, 2012 at 10:32:39PM +0200, Sasha Levin wrote:
As it was discussed recently, there's currently no way for the guest to
>>
On 07/24/2012 10:26 AM, Dor Laor wrote:
> On 07/24/2012 07:55 AM, Rusty Russell wrote:
>> On Mon, 23 Jul 2012 22:32:39 +0200, Sasha Levin
>> wrote:
>>> As it was discussed recently, there's currently no way for the guest to
>>> notify
>>> the host about panics. Further more, there's no reasonabl
On Tue, Jul 24, 2012 at 02:26:33PM +0200, Sasha Levin wrote:
> On 07/24/2012 09:44 AM, Gleb Natapov wrote:
> > On Mon, Jul 23, 2012 at 10:32:39PM +0200, Sasha Levin wrote:
> >> As it was discussed recently, there's currently no way for the guest to
> >> notify
> >> the host about panics. Further m
On 07/24/2012 09:44 AM, Gleb Natapov wrote:
> On Mon, Jul 23, 2012 at 10:32:39PM +0200, Sasha Levin wrote:
>> As it was discussed recently, there's currently no way for the guest to
>> notify
>> the host about panics. Further more, there's no reasonable way to notify the
>> host of other critical
On 07/24/2012 06:55 AM, Rusty Russell wrote:> On Mon, 23 Jul 2012 22:32:39
+0200, Sasha Levin wrote:
>> As it was discussed recently, there's currently no way for the guest to
>> notify
>> the host about panics. Further more, there's no reasonable way to notify the
>> host of other critical even
Hi Stefan,
Thank you for commenting on our patch set.
(2012/07/24 20:03), Masami Hiramatsu wrote:
(2012/07/24 19:02), Stefan Hajnoczi wrote:
On Tue, Jul 24, 2012 at 3:36 AM, Yoshihiro YUNOMAE
wrote:
The performance of each method is compared as follows:
[1] Native
- only recording tr
On Tue, Jul 24, 2012 at 3:36 AM, Yoshihiro YUNOMAE
wrote:
> The performance of each method is compared as follows:
> [1] Native
> - only recording trace data to ring-buffer on a guest
> [2] Virtio-trace
> - running a trace agent on a guest
> - a reader on a host opens FIFO using c
On 07/24/2012 07:55 AM, Rusty Russell wrote:
On Mon, 23 Jul 2012 22:32:39 +0200, Sasha Levin wrote:
As it was discussed recently, there's currently no way for the guest to notify
the host about panics. Further more, there's no reasonable way to notify the
host of other critical events such as a
On Mon, Jul 23, 2012 at 10:32:39PM +0200, Sasha Levin wrote:
> As it was discussed recently, there's currently no way for the guest to notify
> the host about panics. Further more, there's no reasonable way to notify the
> host of other critical events such as an OOM kill.
>
> This short patch ser
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