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Re: [Qemu-block] [PATCH 3/4] block/vpc: give option to force the current
From: |
Kevin Wolf |
Subject: |
Re: [Qemu-block] [PATCH 3/4] block/vpc: give option to force the current_size field in .bdrv_create |
Date: |
Wed, 24 Feb 2016 11:19:37 +0100 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
Am 24.02.2016 um 01:47 hat Jeff Cody geschrieben:
> When QEMU creates a VHD image, it goes by the original spec,
> calculating the current_size based on the nearest CHS geometry (with an
> exception for disks > 127GB).
>
> Apparently, Azure will only allow images that are sized to the nearest
> MB, and the current_size as calculated from CHS cannot guarantee that.
>
> Allow QEMU to create images similar to how Hyper-V creates images, by
> setting current_size to the specified virtual disk size. This
> introduces an option, force_size, to be passed to the vpc format during
> image creation, e.g.:
>
> qemu-img convert -f raw -o force_size -O vpc test.img test.vhd
>
> Bug reference: https://bugs.launchpad.net/qemu/+bug/1490611
>
> Signed-off-by: Jeff Cody <address@hidden>
We need to set a different creator string here that makes vpc_open()
recognise the image as current_size based.
Kevin
- [Qemu-block] [PATCH 0/4] VHD/VPC format compatibility, Jeff Cody, 2016/02/23
- [Qemu-block] [PATCH 1/4] block/vpc: choose size calculation method based on creator_app field, Jeff Cody, 2016/02/23
- [Qemu-block] [PATCH 3/4] block/vpc: give option to force the current_size field in .bdrv_create, Jeff Cody, 2016/02/23
- Re: [Qemu-block] [PATCH 3/4] block/vpc: give option to force the current_size field in .bdrv_create,
Kevin Wolf <=
- Re: [Qemu-block] [PATCH 3/4] block/vpc: give option to force the current_size field in .bdrv_create, Jeff Cody, 2016/02/24
- Re: [Qemu-block] [PATCH 3/4] block/vpc: give option to force the current_size field in .bdrv_create, Peter Lieven, 2016/02/24
- Re: [Qemu-block] [PATCH 3/4] block/vpc: give option to force the current_size field in .bdrv_create, Kevin Wolf, 2016/02/24
- Re: [Qemu-block] [PATCH 3/4] block/vpc: give option to force the current_size field in .bdrv_create, Jeff Cody, 2016/02/24
- Re: [Qemu-block] [PATCH 3/4] block/vpc: give option to force the current_size field in .bdrv_create, Peter Lieven, 2016/02/24
- Re: [Qemu-block] [PATCH 3/4] block/vpc: give option to force the current_size field in .bdrv_create, Jeff Cody, 2016/02/24
- Re: [Qemu-block] [PATCH 3/4] block/vpc: give option to force the current_size field in .bdrv_create, Peter Lieven, 2016/02/24
[Qemu-block] [PATCH 2/4] block/vpc: tests for auto-detecting VPC and Hyper-V VHD images, Jeff Cody, 2016/02/23