[libvirt] [PATCH] qemu: Report nicer error if decompression of save image fails

Daniel P. Berrange berrange at redhat.com
Thu Feb 7 17:12:36 UTC 2013


On Thu, Feb 07, 2013 at 06:09:50PM +0100, Peter Krempa wrote:
> This patch is a little more specific what failed while trying to restore
> a guest from a save image.
> ---
>  src/qemu/qemu_driver.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
> index 979a027..c96ba7a 100644
> --- a/src/qemu/qemu_driver.c
> +++ b/src/qemu/qemu_driver.c
> @@ -4903,6 +4903,8 @@ qemuDomainSaveImageStartVM(virConnectPtr conn,
> 
>          if (virCommandWait(cmd, NULL) < 0) {
>              qemuProcessStop(driver, vm, VIR_DOMAIN_SHUTOFF_FAILED, 0);
> +            virReportError(VIR_ERR_OPERATION_FAILED, "%s",
> +                           _("Decompression of save image failed"));

virCommandWait will already be reporting an error which you're
now overwriting. Historically this has been a very bad thing
for us when troubleshooting because you're throwing away the
more specific details, in favour of a generic error message
with no detail.


Daniel.
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