[libvirt] [PATCH] Return error when --start <number> in cpu-stats is invalid.

Andrea Bolognani abologna at redhat.com
Fri Apr 15 13:21:13 UTC 2016


On Fri, 2016-04-15 at 03:28 -0400, Nitesh Konkar wrote:
> Signed-off-by: Nitesh Konkar <nitkon12 at linux.vnet.ibm.com>
> ---
> # virsh cpu-stats --domain 40 --start 159
> CPU159:
> 	cpu_time             0.000000000 seconds
> 	vcpu_time            0.000000000 seconds
> 
> # virsh cpu-stats --domain 40 --start 160
> Start cpu 160 larger than maximum of 159.
> 
>  tools/virsh-domain.c | 6 ++++++
>  1 files changed, 6 insertions(+)
> 
> diff --git a/tools/virsh-domain.c b/tools/virsh-domain.c
> index 800829e..3d6b626 100644
> --- a/tools/virsh-domain.c
> +++ b/tools/virsh-domain.c
> @@ -7357,6 +7357,12 @@ cmdCPUStats(vshControl *ctl, const vshCmd *cmd)
>      /* get number of cpus on the node */
>      if ((max_id = virDomainGetCPUStats(dom, NULL, 0, 0, 0, 0)) < 0)
>          goto failed_stats;
> +
> +    if (cpu >= max_id) {
> +        vshPrint(ctl, "Start cpu %d larger than maximum of %d.", cpu, max_id - 1);
> +        goto cleanup;
> +    }
> +
>      if (show_count < 0 || show_count > max_id) {
>          if (show_count > max_id)
>              vshPrint(ctl, _("Only %d CPUs available to show\n"), max_id);

I've tweaked the error message a bit, switched from
vshPrint() to vshError() and pushed the patch.

Cheers.

-- 
Andrea Bolognani
Software Engineer - Virtualization Team




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