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Re: [Qemu-devel] delvm does not reduce the qcow2 file size
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From: |
Kevin Wolf |
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Subject: |
Re: [Qemu-devel] delvm does not reduce the qcow2 file size |
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Date: |
Mon, 15 Oct 2012 16:24:11 +0200 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:13.0) Gecko/20120605 Thunderbird/13.0 |
Am 15.10.2012 15:25, schrieb Paolo Bonzini:
> Il 15/10/2012 11:33, Kuniyasu Suzaki ha scritto:
>> Hello,
>>
>> "delvm" is a command to delete a snapshot image in a qcow2 file.
>> However it does not reduce the qcow2 file size.
>
> Note that the file will not grow when new allocations are performed in
> the future.
>
> QEMU should also convert the unused clusters to "holes" in the file
> system, but it doesn't do that yet.
>
>> Is there any method to reduce the qcow2 file size when I delete a snapshot
>> image?
>> should I "convert" the qcow2 file?
>
> I'm not sure what convert does if you have internal snapshots.
It loses the snapshots.
Kevin