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Re: [Qemu-block] [Qemu-devel] storing machine data in qcow images?
From: |
Max Reitz |
Subject: |
Re: [Qemu-block] [Qemu-devel] storing machine data in qcow images? |
Date: |
Mon, 28 May 2018 20:44:40 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.7.0 |
On 2018-05-28 20:38, Kevin Wolf wrote:
> Am 28.05.2018 um 20:30 hat Richard W.M. Jones geschrieben:
>> On Mon, May 28, 2018 at 08:10:32PM +0200, Max Reitz wrote:
>>> As someone who is just naive and doesn't see the big picture, I don't
>>> see what's wrong with using a tar file that contains the image and
>>> additional data.
>>
>> FWIW an OVA file is exactly this: an uncompressed tar file containing
>> disk image(s) and metadata.
>
> If we combine VM configuration and the disk image this way, I would
> still want to directly use that combined thing without having to extract
> its components first.
>
> Just accessing the image file within a tar archive is possible and we
> could write a block driver for that (I actually think we should do
> this), but it restricts you because certain operations like resizing
> aren't really possible in tar. Unfortunately, resizing is a really
> common operation for non-raw image formats.
>
> And if I think of a file format that can contain several different
> things that can be individually resized etc., I end up with qcow2 in the
> simple case or a full file system in the more complex case.
Well, you end up with VMDK.
Max
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- Re: [Qemu-block] [Qemu-devel] storing machine data in qcow images?, (continued)
- Re: [Qemu-block] [Qemu-devel] storing machine data in qcow images?, Max Reitz, 2018/05/28
- Re: [Qemu-block] [Qemu-devel] storing machine data in qcow images?, Richard W.M. Jones, 2018/05/28
- Re: [Qemu-block] [Qemu-devel] storing machine data in qcow images?, Kevin Wolf, 2018/05/28
- Re: [Qemu-block] [Qemu-devel] storing machine data in qcow images?,
Max Reitz <=
- Re: [Qemu-block] [Qemu-devel] storing machine data in qcow images?, Kevin Wolf, 2018/05/28
- Re: [Qemu-block] [Qemu-devel] storing machine data in qcow images?, Max Reitz, 2018/05/29
- Re: [Qemu-block] [Qemu-devel] storing machine data in qcow images?, Kevin Wolf, 2018/05/29
- Re: [Qemu-block] [Qemu-devel] storing machine data in qcow images?, Eduardo Habkost, 2018/05/29
- Re: [Qemu-block] [Qemu-devel] storing machine data in qcow images?, Richard W.M. Jones, 2018/05/28
- Re: [Qemu-block] [Qemu-devel] storing machine data in qcow images?, Richard W.M. Jones, 2018/05/28
- Re: [Qemu-block] [Qemu-devel] storing machine data in qcow images?, Kevin Wolf, 2018/05/29
- Re: [Qemu-block] [Qemu-devel] storing machine data in qcow images?, Max Reitz, 2018/05/29