> -Original Message-
> From: Peter Krempa
> Sent: 23 November 2020 17:47
> To: Thanos Makatos
> Cc: Suraj Kasi ; libvirt-l...@redhat.com; John Levon
>
> Subject: Re: Libvirt NVME support
>
> On Mon, Nov 23, 2020 at 17:40:58 +, Thanos Makatos wrote:
On Mon, Nov 23, 2020 at 17:40:58 +, Thanos Makatos wrote:
>
>
> > -Original Message-
> > From: Peter Krempa
> > Sent: 23 November 2020 16:56
> > To: Thanos Makatos
> > Cc: Suraj Kasi ; libvirt-l...@redhat.com; John Levon
> >
> > S
> -Original Message-
> From: Peter Krempa
> Sent: 23 November 2020 16:56
> To: Thanos Makatos
> Cc: Suraj Kasi ; libvirt-l...@redhat.com; John Levon
>
> Subject: Re: Libvirt NVME support
>
> On Mon, Nov 23, 2020 at 16:48:55 +, Thanos Makatos wrote:
> -Original Message-
> From: Peter Krempa
> Sent: 23 November 2020 15:20
> To: Daniel P. Berrangé
> Cc: Michal PrÃvoznÃk ; Thanos Makatos
> ; Suraj Kasi ;
> libvirt-l...@redhat.com; John Levon
> Subject: Re: Libvirt NVME support
>
> On Mon, Nov 23,
On Mon, Nov 23, 2020 at 16:48:55 +, Thanos Makatos wrote:
> > On Mon, Nov 23, 2020 at 13:07:51 +, Thanos Makatos wrote:
> > >
> > > > On Mon, Nov 23, 2020 at 09:47:23 +, Thanos Makatos wrote:
> > > > > > On Thu, Nov 19, 2020 at 10:17:56 +, Thanos Makatos wrote:
> > > > >
> > > > >
> On Mon, Nov 23, 2020 at 13:07:51 +, Thanos Makatos wrote:
> >
> > > On Mon, Nov 23, 2020 at 09:47:23 +, Thanos Makatos wrote:
> > > > > On Thu, Nov 19, 2020 at 10:17:56 +, Thanos Makatos wrote:
> > > > > > > As a starting point a trivial way to model this in the XML will
> > > > > >
On Mon, Nov 23, 2020 at 15:01:31 +, Daniel Berrange wrote:
> On Mon, Nov 23, 2020 at 03:36:42PM +0100, Peter Krempa wrote:
> > On Mon, Nov 23, 2020 at 15:32:20 +0100, Michal Privoznik wrote:
[...]
> > No, the NVMe controller lives on PCIe. Here we are trying to emulate a
> > NVMe controller
On Mon, Nov 23, 2020 at 03:36:42PM +0100, Peter Krempa wrote:
> On Mon, Nov 23, 2020 at 15:32:20 +0100, Michal Privoznik wrote:
> > On 11/23/20 3:03 PM, Daniel P. Berrangé wrote:
> > > On Wed, Nov 18, 2020 at 11:24:30AM +0100, Peter Krempa wrote:
> > > > On Wed, Nov 18, 2020 at 09:57:14 +,
On Mon, Nov 23, 2020 at 15:32:20 +0100, Michal Privoznik wrote:
> On 11/23/20 3:03 PM, Daniel P. Berrangé wrote:
> > On Wed, Nov 18, 2020 at 11:24:30AM +0100, Peter Krempa wrote:
> > > On Wed, Nov 18, 2020 at 09:57:14 +, Thanos Makatos wrote:
> > > > > As a separate question, is there any
On Mon, Nov 23, 2020 at 03:32:20PM +0100, Michal Prívozník wrote:
> On 11/23/20 3:03 PM, Daniel P. Berrangé wrote:
> > On Wed, Nov 18, 2020 at 11:24:30AM +0100, Peter Krempa wrote:
> > > On Wed, Nov 18, 2020 at 09:57:14 +, Thanos Makatos wrote:
> > > > > As a separate question, is there any
On 11/23/20 3:03 PM, Daniel P. Berrangé wrote:
On Wed, Nov 18, 2020 at 11:24:30AM +0100, Peter Krempa wrote:
On Wed, Nov 18, 2020 at 09:57:14 +, Thanos Makatos wrote:
As a separate question, is there any performance benefit of emulating a
NVMe controller compared to e.g. virtio-scsi?
We
On Wed, Nov 18, 2020 at 11:24:30AM +0100, Peter Krempa wrote:
> On Wed, Nov 18, 2020 at 09:57:14 +, Thanos Makatos wrote:
> > > As a separate question, is there any performance benefit of emulating a
> > > NVMe controller compared to e.g. virtio-scsi?
> >
> > We haven't measured that yet; I
On Mon, Nov 23, 2020 at 13:07:51 +, Thanos Makatos wrote:
>
> > On Mon, Nov 23, 2020 at 09:47:23 +, Thanos Makatos wrote:
> > > > On Thu, Nov 19, 2020 at 10:17:56 +, Thanos Makatos wrote:
> > > > > > As a starting point a trivial way to model this in the XML will be:
> > > > > >
> > >
> On Mon, Nov 23, 2020 at 09:47:23 +, Thanos Makatos wrote:
> > > On Thu, Nov 19, 2020 at 10:17:56 +, Thanos Makatos wrote:
> > > > > As a starting point a trivial way to model this in the XML will be:
> > > > >
> > > > >
> > > > >
> > > > > And then add the storage into it as:
> >
On Mon, Nov 23, 2020 at 09:47:23 +, Thanos Makatos wrote:
> > On Thu, Nov 19, 2020 at 10:17:56 +, Thanos Makatos wrote:
> > > > As a starting point a trivial way to model this in the XML will be:
> > > >
> > > >
> > > >
> > > > And then add the storage into it as:
> > > >
> > > >
> On Thu, Nov 19, 2020 at 10:17:56 +, Thanos Makatos wrote:
> > > As a starting point a trivial way to model this in the XML will be:
> > >
> > >
> > >
> > > And then add the storage into it as:
> > >
> > >
> > >
> > >
> >
> > 'target dev' is how the device appears in
On Thu, Nov 19, 2020 at 10:17:56 +, Thanos Makatos wrote:
> > As a starting point a trivial way to model this in the XML will be:
> >
> >
> >
> > And then add the storage into it as:
> >
> >
> >
> >
>
> 'target dev' is how the device appears in the guest, right? It
> As a starting point a trivial way to model this in the XML will be:
>
>
>
> And then add the storage into it as:
>
>
>
>
'target dev' is how the device appears in the guest, right? It should be
something like 'nvme0n1'. I'm not sure though this is something that we
On Wed, Nov 18, 2020 at 20:31:03 +0100, Michal Privoznik wrote:
> On 11/18/20 11:24 AM, Peter Krempa wrote:
> > On Wed, Nov 18, 2020 at 09:57:14 +, Thanos Makatos wrote:
[...]
> Would it make sense to relax the current limitation in libvirt and allow
> (which is meant for cases where the
On 11/18/20 11:24 AM, Peter Krempa wrote:
On Wed, Nov 18, 2020 at 09:57:14 +, Thanos Makatos wrote:
As a separate question, is there any performance benefit of emulating a
NVMe controller compared to e.g. virtio-scsi?
We haven't measured that yet; I would expect it to be slight faster
On Wed, Nov 18, 2020 at 09:57:14 +, Thanos Makatos wrote:
> > As a separate question, is there any performance benefit of emulating a
> > NVMe controller compared to e.g. virtio-scsi?
>
> We haven't measured that yet; I would expect it to be slight faster and/or
> more
> CPU efficient but
> As a separate question, is there any performance benefit of emulating a
> NVMe controller compared to e.g. virtio-scsi?
We haven't measured that yet; I would expect it to be slight faster and/or more
CPU efficient but wouldn't be surprised if it isn't. The main benefit of using
NVMe is that we
On Mon, Nov 16, 2020 at 23:01:00 +, Suraj Kasi wrote:
> Hi Peter,
>
> Just wanted to follow up. As Thanos mentioned that we want a virtual NVMe
> controller in the guest for which the support doesn't yet exist in libvirt.
> Is it something that would be accepted if we were to implement it?
ot; wrote:
> -Original Message-
> From: Peter Krempa
> Sent: 09 November 2020 16:44
> To: Suraj Kasi
> Cc: libvirt-l...@redhat.com; Thanos Makatos
> ; John Levon
> Subject: Re: Libvirt NVME support
>
> On Mon, Nov 09, 202
> -Original Message-
> From: Peter Krempa
> Sent: 09 November 2020 16:44
> To: Suraj Kasi
> Cc: libvirt-l...@redhat.com; Thanos Makatos
> ; John Levon
> Subject: Re: Libvirt NVME support
>
> On Mon, Nov 09, 2020 at 16:38:11 +, Suraj Kasi wrote:
> &g
On Mon, Nov 09, 2020 at 16:38:11 +, Suraj Kasi wrote:
> Hi,
>
> We wanted to check if it’s possible to specify a disk’s target as nvme (so
> that the disk shows up as a nvme disk to the guest VM).
>
> Per libvirt documentation it looks like (since Libvirt 6.0.0) we can specify
> the disk
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