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Re: [PATCH v5 4/5] qemu-img: Add convert --bitmaps option


From: Eric Blake
Subject: Re: [PATCH v5 4/5] qemu-img: Add convert --bitmaps option
Date: Thu, 21 May 2020 10:19:40 -0500
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0

On 5/21/20 10:11 AM, Nir Soffer wrote:
On Thu, May 21, 2020 at 1:01 AM Eric Blake <address@hidden> wrote:

Make it easier to copy all the persistent bitmaps of (the top layer
of) a source image along with its guest-visible contents, by adding a
boolean flag for use with qemu-img convert.  This is basically
shorthand, as the same effect could be accomplished with a series of
'qemu-img bitmap --add' and 'qemu-img bitmap --merge -b source'
commands, or by QMP commands.

Note that this command will fail in the same scenarios where 'qemu-img
measure --bitmaps' fails, when either the source or the destanation

destination

lacks persistent bitmap support altogether.

If we remove --bitmaps option from qemu-img measure, we need to remove
this note.

Or rather, adjust it to state that "this command will fail in the scenarios where 'qemu-img measure' omits a 'bitmaps size:' output line.

--
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3226
Virtualization:  qemu.org | libvirt.org




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