From: Anthony Liguori <anthony@codemonkey.ws>
To: Marc Bevand <m.bevand@gmail.com>
Cc: qemu-devel@nongnu.org
Subject: [Qemu-devel] Re: [PATCH 2/2] New qemu-img convert -B option to preserve the COW aspect of images and/or re-base them
Date: Wed, 04 Jun 2008 09:03:53 -0500 [thread overview]
Message-ID: <4846A0C9.9050106@codemonkey.ws> (raw)
In-Reply-To: <OF8A88C382.3F4B1AFA-ON8525745E.00231217@rapid7.com>
Marc Bevand wrote:
> If a disk image hd_a is a copy-on-write image based on the backing
> file hd_base, it is currently impossible to use qemu-img to convert
> hd_a to hd_b (possibly using another disk image format) while keeping
> hd_b a copy-on-write image of hd_base. qemu-img also doesn't provide a
> feature that would let an enduser re-base a image, for example: adjust
> hd_a's backing file name from hd_base to hd_base2 if it had to change
> for some reason.
>
> This patch solves the 2 above problems by adding a new qemu-img
> convert -B option which works as described below. This is a generic
> feature that should work with ANY disk image format supporting backing
> files:
>
Looks good to me.
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Regards,
Anthony Liguori
next prev parent reply other threads:[~2008-06-04 14:21 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-04 6:22 [Qemu-devel] [PATCH 0/2] Update documentation for qemu-img + add new -B option Marc Bevand
2008-06-04 6:23 ` [Qemu-devel] [PATCH 1/2] Update documentation for qemu-img convert options Marc Bevand
2008-06-04 13:54 ` [Qemu-devel] " Anthony Liguori
2008-06-04 6:23 ` [Qemu-devel] [PATCH 2/2] New qemu-img convert -B option to preserve the COW aspect of images and/or re-base them Marc Bevand
2008-06-04 14:03 ` Anthony Liguori [this message]
2008-06-04 7:37 ` [Qemu-devel] [PATCH 0/2] Update documentation for qemu-img + add new -B option Jamie Lokier
2008-06-04 10:24 ` Marc Bevand
2008-06-04 15:39 ` Jamie Lokier
2008-06-04 17:09 ` Marc Bevand
2008-06-05 12:16 ` Jamie Lokier
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