Hi,
VirtIO SCSI [0] has been supported a while now by Linux and all kernels, but
inside CloudStack we are not using it. There is a issue for this [1].
It would bring more (theoretical) performance to VMs, but one of the motivators
(for me) is that we can support TRIM/DISCARD [2].
This would al
parameter? It would be great if
someone familiar with the vmware code could chime in here.
Thanks,
Nathan
>
> Wido
>
>> Thoughts?
>>
>>
>>
>> From: Syed Ahmed
>> Sent: Tuesday, January 24, 2017 10:46 AM
>> T
Nathan
>
> Wido
>
>> Thoughts?
>>
>>
>>
>> From: Syed Ahmed
>> Sent: Tuesday, January 24, 2017 10:46 AM
>> To: dev@cloudstack.apache.org
>> Cc: Simon Weller
>>
> Wido
>>
>>> Thoughts?
>>>
>>>
>>>
>>> From: Syed Ahmed
>>> Sent: Tuesday, January 24, 2017 10:46 AM
>>> To: dev@cloudstack.apache.org
>>> Cc: Simon Weller
>>> Subject: Re: Add
;
> Thanks,
>
> Nathan
>
>
>
>> Wido
>>
>>> Thoughts?
>>>
>>>
>>>
>>> From: Syed Ahmed
>>> Sent: Tuesday, January 24, 20
ware code, it
>> looks like maybe they already use this parameter? It would be great if
>> someone familiar with the vmware code could chime in here.
>>
>> Thanks,
>>
>> Nathan
>>
>>
>>
>>> Wido
>>>
>>>
iar with the vmware code could chime in here.
>
> Thanks,
>
> Nathan
>
>
>
>> Wido
>>
>>> Thoughts?
>>>
>>>
>>>
>>> From: Syed Ahmed
>> name inside the agent code. From a quick glance at the vmware code, it
>> looks like maybe they already use this parameter? It would be great if
>> someone familiar with the vmware code could chime in here.
>>
>> Thanks,
>>
>> Nathan
Hi Wido,
If I understand correctly from the documentation and your examples, virtio
provides virtio interface to the guest while virtio-scsi provides scsi
interface, therefore an IaaS service should not replace it without user
request / approval. It would be probably better to let the user set wha
Wido,
Were you thinking of adding this as a global setting? I can see why it will
be useful. I'm happy to review any ideas you might have around this.
Thanks,
-Syed
On Sat, Jan 21, 2017 at 04:46 Laszlo Hornyak
wrote:
> Hi Wido,
>
> If I understand correctly from the documentation and your examp
> Op 21 januari 2017 om 16:15 schreef Syed Ahmed :
>
>
> Wido,
>
> Were you thinking of adding this as a global setting? I can see why it will
> be useful. I'm happy to review any ideas you might have around this.
>
Well, not really. We don't have any structure for this in place right now to
-
From: Wido den Hollander [w...@widodh.nl]
Received: Saturday, 21 Jan 2017, 2:56PM
To: Syed Ahmed [sah...@cloudops.com]; dev@cloudstack.apache.org
[dev@cloudstack.apache.org]
Subject: Re: Adding VirtIO SCSI to KVM hypervisors
> Op 21 januari 2017 om 16:15 schreef Syed Ahmed :
>
>
>
stomers.
>
>
>
> Simon Weller/615-312-6068 <(615)%20312-6068>
>
>
> -Original Message-
> *From:* Wido den Hollander [w...@widodh.nl]
> *Received:* Saturday, 21 Jan 2017, 2:56PM
> *To:* Syed Ahmed [sah...@cloudops.com]; dev@cloudstack.apache.org [
> dev@c
[dev@cloudstack.apache.org]
Subject: Re: Adding VirtIO SCSI to KVM hypervisors
Exposing this via an API would be tricky but it can definitely be added as a
cluster-wide or a global setting in my opinion. By enabling that, all the
instances would be using VirtIO SCSI. Is there a reason you'd want some
instan
t;> *From:* Wido den Hollander [w...@widodh.nl]
>> *Received:* Saturday, 21 Jan 2017, 2:56PM
>> *To:* Syed Ahmed [sah...@cloudops.com]; dev@cloudstack.apache.org [
>> dev@cloudstack.apache.org]
>> *Subject:* Re: Adding VirtIO SCSI to KVM hypervisors
>>
>>
>>&g
;
> >>
> >>
> >> Simon Weller/615-312-6068 <(615)%20312-6068>
> >>
> >>
> >> -Original Message-
> >> *From:* Wido den Hollander [w...@widodh.nl]
> >> *Received:* Saturday, 21 Jan 2017, 2:56PM
> >> *
with Windows VMs before? The standard virtio
> driver
> > >> doesn't support spanned disks and that's something we'd really like to
> > >> enable for our customers.
> > >>
> > >>
> > >>
> > >> Simon Weller/615-3
Subject: Re: Adding VirtIO SCSI to KVM hypervisors
To maintain backward compatibility we would have to add a config option here
unfortunately. I do like the idea however. We can make the default VirtIO ISCSI
and keep the VirtIO-blk as an alternative for existing installations.
On Mon, Jan 23, 2017 at
indows VMs before? The standard virtio driver
> > >> doesn't support spanned disks and that's something we'd really like to
> > >> enable for our customers.
> > >>
> > >>
> > >>
> > >> Simon Weller/615-312-6068
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