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From: Anthony Liguori <anthony@codemonkey.ws>
To: qemu-devel@nongnu.org
Cc: uri Lublin <ulublin@redhat.com>
Subject: Re: [Qemu-devel] [6907] Introducing qcow2 extensions (Uri Lublin)
Date: Sat, 28 Mar 2009 20:13:12 -0500	[thread overview]
Message-ID: <49CECB28.30306@codemonkey.ws> (raw)
In-Reply-To: <49CE7352.1050800@redhat.com>

Avi Kivity wrote: 
>
> We should introduce a notion of compatible vs. incompatible extensions.
>
> A compatible extension my be ignored by the qcow2 code if it does not 
> understand the magic number.  An incompatible extension causes an 
> abort.  This allows both more flexibility in how we can change the 
> file format.  I believe ext* does the same thing.

I was assuming that all extensions would be compatible.  I don't like 
the idea of having qcow2 files floating around that require specific 
version of QEMU.

For that, we should just bump to qcow3 (that's what versioning is for, 
right? :-).

Regards,

Anthony Liguori

  reply	other threads:[~2009-03-29  1:13 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-03-28 17:55 [Qemu-devel] [6907] Introducing qcow2 extensions (Uri Lublin) Anthony Liguori
2009-03-28 18:58 ` Avi Kivity
2009-03-29  1:13   ` Anthony Liguori [this message]
2009-03-29  5:45     ` Avi Kivity
2009-03-29 19:44       ` Anthony Liguori

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