Please find comments inline
-----Original Message-----
From: boun...@canonical.com [mailto:boun...@canonical.com] On Behalf Of Jeff
Cody
Sent: Wednesday, January 07, 2015 9:11 PM
To: Lokesha, Amulya
Subject: Re: [Qemu-devel] [Bug 1399191] [NEW] Large VHDX image size
On Wed, Jan 07, 2015 at 03:30:28PM +0000, Stefan Hajnoczi wrote:
> On Thu, Dec 04, 2014 at 01:31:38PM -0000, AMULYA L wrote:
> > Public bug reported:
> >
> > We are trying to convert a VMDK image to VHDX image for deploy to HyperV
> > Server ( SCVMM 2012 SP1) using qemu-img.
> > We tried converting the image using both 'fixed' as well as 'dynamic'
> > format. We found that both the disks occupy the same size of 50GB. When the
> > same is done with VHD image, we found that the dynamic disks are much
> > lesser in size (5 GB) than the fixed disk (50GB).
> >
> > Why is that the VHDX generates large sized images for both the formats?
> >
> > The following commands were used to convert the vmdk image to VHDX
> > format
>
> Jeff, did you fix this recently in commit
> 85b712c9d5b873562c864e72f69cbf0d87d2fe40 ("block: vhdx - set
> .bdrv_has_zero_init to bdrv_has_zero_init_1")?
>
> Stefan
Yes, although there has been a report that there are issues in the resulting
vhdx image in a MS server, after this patch. I am going to test and fix (if
confirmed) once my MSDN subscription is renewed (in process now, I expect it
anytime).
Jeff
--
Hi Jeff,
Could you please give us a possible timeline of when fix will be
available. Our customers are waiting on this as we are blocked with the
image creation.
Thanks,
Amulya
You received this bug notification because you are subscribed to the bug report.
https://bugs.launchpad.net/bugs/1399191
Title:
Large VHDX image size
Status in QEMU:
New
Bug description:
We are trying to convert a VMDK image to VHDX image for deploy to HyperV
Server ( SCVMM 2012 SP1) using qemu-img.
We tried converting the image using both 'fixed' as well as 'dynamic' format.
We found that both the disks occupy the same size of 50GB. When the same is
done with VHD image, we found that the dynamic disks are much lesser in size (5
GB) than the fixed disk (50GB).
Why is that the VHDX generates large sized images for both the
formats?
The following commands were used to convert the vmdk image to VHDX
format
1. qemu-img convert -p -o subformat=fixed -f vmdk -O vhdx Test.vmdk
Test-fixed.vhdx
qemu-img info Test-fixed.vhdx
image: Test-fixed.vhdx
file format: vhdx
virtual size: 50G (53687091200 bytes)
disk size: 50G
cluster_size: 16777216
2. qemu-img convert -p -o subformat=dynamic -f vmdk -O vhdx Test.vmdk
Test-dynamic.vhdx
qemu-img info Test-dynamic.vhdx
image: Test-dynamic.vhdx
file format: vhdx
virtual size: 50G (53687091200 bytes)
disk size: 50G
cluster_size: 16777216
We tried this with the following version of qemu
1. qemu-2.0.0
2. qemu-2.1.2
3. qemu-2.2.0-rc4
Please let us know how to create compact VHDX images using qemu-img.
Thank you
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1399191/+subscriptions
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1399191
Title:
Large VHDX image size
Status in QEMU:
New
Bug description:
We are trying to convert a VMDK image to VHDX image for deploy to HyperV
Server ( SCVMM 2012 SP1) using qemu-img.
We tried converting the image using both 'fixed' as well as 'dynamic' format.
We found that both the disks occupy the same size of 50GB. When the same is
done with VHD image, we found that the dynamic disks are much lesser in size (5
GB) than the fixed disk (50GB).
Why is that the VHDX generates large sized images for both the
formats?
The following commands were used to convert the vmdk image to VHDX
format
1. qemu-img convert -p -o subformat=fixed -f vmdk -O vhdx Test.vmdk
Test-fixed.vhdx
qemu-img info Test-fixed.vhdx
image: Test-fixed.vhdx
file format: vhdx
virtual size: 50G (53687091200 bytes)
disk size: 50G
cluster_size: 16777216
2. qemu-img convert -p -o subformat=dynamic -f vmdk -O vhdx Test.vmdk
Test-dynamic.vhdx
qemu-img info Test-dynamic.vhdx
image: Test-dynamic.vhdx
file format: vhdx
virtual size: 50G (53687091200 bytes)
disk size: 50G
cluster_size: 16777216
We tried this with the following version of qemu
1. qemu-2.0.0
2. qemu-2.1.2
3. qemu-2.2.0-rc4
Please let us know how to create compact VHDX images using qemu-img.
Thank you
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1399191/+subscriptions
