From: Jamie Lokier <jamie@shareable.org>
To: qemu-devel@nongnu.org
Cc: Uri Lublin <uril@redhat.com>
Subject: Re: [Qemu-devel] [PATCH 0/2] qemu block changes: keep backing file format v2
Date: Mon, 26 Jan 2009 21:56:54 +0000 [thread overview]
Message-ID: <20090126215654.GB9296@shareable.org> (raw)
In-Reply-To: <1232995199-12086-1-git-send-email-uril@redhat.com>
Uri Lublin wrote:
> I call "hidden image format" to the following format of a backing file name:
> "name\0format". Although it can be considered a hack, that's an easy
> way to support old images with new qemu as well as old qemu with new images
> (in which case probing would be done), without changing the qcow2 header.
...
> Changes from v1: use "name\0format" instead of "fmt:FMT:name"
Do you think there will be any other information added in future,
while wanting to remain compatible with old qemus (i.e. without
changing the qcow2 header)?
If so, "name\0format=FMT", and stop at the second \0 if there is one,
something like that?
-- Jamie
next prev parent reply other threads:[~2009-01-26 21:56 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-26 18:39 [Qemu-devel] [PATCH 0/2] qemu block changes: keep backing file format v2 Uri Lublin
2009-01-26 18:39 ` [Qemu-devel] [PATCH 1/2] Introducing hidden image format in backing file name Uri Lublin
2009-01-26 18:39 ` Uri Lublin
2009-01-26 18:39 ` [Qemu-devel] [PATCH 2/2] qemu-img: adding a "-F base_fmt" option to "qemu-img create -b" Uri Lublin
2009-01-26 21:56 ` Jamie Lokier [this message]
2009-01-27 13:23 ` [Qemu-devel] [PATCH 0/2] qemu block changes: keep backing file format v2 Uri Lublin
2009-01-27 21:46 ` Anthony Liguori
2009-01-27 23:11 ` Uri Lublin
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