Re: [PATCH] qemuDomainObjStart: Warn on corrupted image

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On 11/11/13 16:48, Michal Privoznik wrote:
> If the managedsave image is corrupted, e.g. the XML part is, we fail to
> parse it and throw an error, e.g.:
> 
> error: Failed to start domain jms8
> error: XML error: missing security model when using multiple labels
> 
> This is okay, as we can't really start the machine and avoid undefined
> qemu behaviour. On the other hand, the error message doesn't give a
> clue to users what should they do. The consensus here would be to thrown

Well a normal user won't check the logs as a first operation. This is a
very good example place where libvirt would really benefit from having
"stacked" error messages as the low level message doesn't give the user
a clue about what happened.

> a warning to logs saying "Hey, you've got a corrupted file".
> 
> Signed-off-by: Michal Privoznik <mprivozn@xxxxxxxxxx>
> ---
>  src/qemu/qemu_driver.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)

I'm NOT ACKing this right away as I personally don't like the change of
behavior to report an error in case of a corrupt managed save. We will
now require the users to manually delete the corrupted file instead.

Peter



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