* Is there any solution in KVM that like VAAI does in EXSI
@ 2013-02-26 5:49 Timon Wang
2013-02-26 15:13 ` Stefan Hajnoczi
0 siblings, 1 reply; 3+ messages in thread
From: Timon Wang @ 2013-02-26 5:49 UTC (permalink / raw)
To: kvm
Hi everybody,
Is there any solution in KVM that works like VAAI does in EXSI, I
found a PPT that posted in Sep. 2012, which said that storage offload
will be consider in future.
I am wondering anybody knows about this, or provide some information about this?
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Is there any solution in KVM that like VAAI does in EXSI
2013-02-26 5:49 Is there any solution in KVM that like VAAI does in EXSI Timon Wang
@ 2013-02-26 15:13 ` Stefan Hajnoczi
2013-02-27 17:23 ` Paolo Bonzini
0 siblings, 1 reply; 3+ messages in thread
From: Stefan Hajnoczi @ 2013-02-26 15:13 UTC (permalink / raw)
To: Timon Wang; +Cc: kvm
On Tue, Feb 26, 2013 at 01:49:42PM +0800, Timon Wang wrote:
> Is there any solution in KVM that works like VAAI does in EXSI, I
> found a PPT that posted in Sep. 2012, which said that storage offload
> will be consider in future.
> I am wondering anybody knows about this, or provide some information about this?
Thin Provisioning support is being added to QEMU. Some configurations
already work - virtio-scsi on a block device or raw file supports
discard, for example.
Linux recently got Zero Blocks support in the form of the BLKZEROOUT
ioctl. It is not being exploited by QEMU or libvirt yet.
Copy Offload, not aware of active development. Perhaps libvirt or
libstoragemgmt will support it.
Stefan
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Is there any solution in KVM that like VAAI does in EXSI
2013-02-26 15:13 ` Stefan Hajnoczi
@ 2013-02-27 17:23 ` Paolo Bonzini
0 siblings, 0 replies; 3+ messages in thread
From: Paolo Bonzini @ 2013-02-27 17:23 UTC (permalink / raw)
To: Stefan Hajnoczi; +Cc: Timon Wang, kvm
Il 26/02/2013 16:13, Stefan Hajnoczi ha scritto:
>> > Is there any solution in KVM that works like VAAI does in EXSI, I
>> > found a PPT that posted in Sep. 2012, which said that storage offload
>> > will be consider in future.
>> > I am wondering anybody knows about this, or provide some information about this?
> Thin Provisioning support is being added to QEMU. Some configurations
> already work - virtio-scsi on a block device or raw file supports
> discard, for example.
>
> Linux recently got Zero Blocks support in the form of the BLKZEROOUT
> ioctl. It is not being exploited by QEMU or libvirt yet.
>
> Copy Offload, not aware of active development. Perhaps libvirt or
> libstoragemgmt will support it.
Copy offload is in the works (still at the whiteboard stage, though).
Paolo
^ permalink raw reply [flat|nested] 3+ messages in thread
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2013-02-26 5:49 Is there any solution in KVM that like VAAI does in EXSI Timon Wang
2013-02-26 15:13 ` Stefan Hajnoczi
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