From: Eric Blake <eblake@redhat.com>
To: "Daniel P. Berrange" <berrange@redhat.com>,
Stefan Hajnoczi <stefanha@gmail.com>
Cc: Kevin Wolf <kwolf@redhat.com>,
Allon Mureinik <amureini@redhat.com>,
qemu-devel@nongnu.org, Max Reitz <mreitz@redhat.com>,
Nir Soffer <nsoffer@redhat.com>,
Maor Lipchuk <mlipchuk@redhat.com>,
qemu-discuss@nongnu.org
Subject: Re: [Qemu-devel] Estimation of qcow2 image size converted from raw image
Date: Wed, 15 Feb 2017 09:34:08 -0600 [thread overview]
Message-ID: <7fffca8b-b58a-d085-8f48-0d6c4fb9a774@redhat.com> (raw)
In-Reply-To: <20170215152013.GH24672@redhat.com>
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On 02/15/2017 09:20 AM, Daniel P. Berrange wrote:
>> Let's try this syntax:
>>
>> $ qemu-img query-max-size -f raw -O qcow2 input.raw
>> 1234678000
>>
>> As John explained, it is only an estimate. But it will be a
>> conservative maximum.
>
> This forces you to have an input file. It would be nice to be able to
> get the same information by merely giving the desired capacity e.g
>
> $ qemu-img query-max-size -O qcow2 20G
We'd need an option to tell the difference between size and pre-existing
file, if we want to support both ways. Maybe:
qemu-img query-max-size -O qcow2 --size 20G
qemu-img query-max-size -O qcow2 -f raw input.raw
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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next prev parent reply other threads:[~2017-02-15 15:34 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-13 15:46 [Qemu-devel] Estimation of qcow2 image size converted from raw image Maor Lipchuk
2017-02-13 17:03 ` John Snow
2017-02-13 17:16 ` Daniel P. Berrange
2017-02-13 18:26 ` John Snow
2017-02-15 15:14 ` Stefan Hajnoczi
2017-02-15 15:20 ` Daniel P. Berrange
2017-02-15 15:34 ` Eric Blake [this message]
2017-02-15 15:57 ` Nir Soffer
2017-02-15 16:05 ` [Qemu-devel] [Qemu-discuss] " Alberto Garcia
2017-02-15 16:11 ` Daniel P. Berrange
2017-02-15 16:07 ` [Qemu-devel] " Daniel P. Berrange
2017-02-20 11:12 ` Stefan Hajnoczi
2017-02-15 15:49 ` Nir Soffer
2017-02-20 11:07 ` Stefan Hajnoczi
[not found] ` <CAJ1JNOdzD7DHTHGJEO2YQANDPq0kY-PEh6J1jBkP7hUW0Kvy9w@mail.gmail.com>
[not found] ` <CAMRbyyssi_rspwDJTtWM1Ju5CTZ15z1xBikRDONrS84rx+B8Qg@mail.gmail.com>
2017-02-22 16:15 ` Maor Lipchuk
2017-02-22 22:06 ` Maor Lipchuk
2017-02-28 9:19 ` Stefan Hajnoczi
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