From: Kevin Wolf <kwolf@redhat.com>
To: Frediano Ziglio <freddy77@gmail.com>
Cc: qemu-devel <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] qcow2: snapshot and resize possible?
Date: Tue, 13 Sep 2011 11:51:59 +0200 [thread overview]
Message-ID: <4E6F27BF.5040301@redhat.com> (raw)
In-Reply-To: <CAHt6W4eedq-rY7_EEqCC3T78wSBrqLUy+WJmijGMB5KEJEybYg@mail.gmail.com>
Am 13.09.2011 11:41, schrieb Frediano Ziglio:
> Looking at block TODOs I saw qcow2 resize with snapshot. However I
> would ask if this is technical possible with current format. The
> reason is that snapshots have no size (only l1_size, QCowHeader have a
> size field) however I think that size if part of machine state and is
> not possible to compute exact size from l1_size.
> Should this resize be posted to qcow3 update?
Yes, I think it would require a format change. Maybe we should add a
field for the image size to the qcow2 v3 proposal.
Kevin
prev parent reply other threads:[~2011-09-13 9:49 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-13 9:41 [Qemu-devel] qcow2: snapshot and resize possible? Frediano Ziglio
2011-09-13 9:51 ` Kevin Wolf [this message]
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