Re: [libvirt PATCH] qemu: re-add padding to the saved state images

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On Mon, 2020-04-27 at 14:41 +0100, Daniel P. Berrangé wrote:
> In the past we added 1024 bytes of padding to saved state images so that
> users can run "virsh managedsave-edit $GUEST" and make XML changes which
> increase the size of the XML document. This padding was accidentally
> lost a while back
> 
>   commit 6b9b21db7079888a05d192b079e68290bdf14a76
>   Author: Peter Krempa <pkrempa@xxxxxxxxxx>
>   Date:   Wed Feb 17 13:10:11 2016 +0100
> 
>     qemu: Remove unnecessary calculations in qemuDomainSaveMemory
> 
> The original 1024 bytes was unreasonably stingy when we consider that
> the QEMU state is typically going to be many 100's of MB in size. Thus
> this adds 64 KB of padding after the XML which should cope with any
> plausible modifications a user will want to make.
> 
> Signed-off-by: Daniel P. Berrangé <berrange@xxxxxxxxxx>
> ---
>  src/qemu/qemu_driver.c | 17 ++++++++++-------
>  1 file changed, 10 insertions(+), 7 deletions(-)

Please consider including a link to

  https://bugzilla.redhat.com/show_bug.cgi?id=1229255

in the commit message.

-- 
Andrea Bolognani / Red Hat / Virtualization





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