[libvirt] [PATCH] qemu: don't log failure during QMP add-fd probe

Daniel P. Berrange berrange at redhat.com
Tue Feb 5 15:59:05 UTC 2013


On Tue, Feb 05, 2013 at 08:54:57AM -0700, Eric Blake wrote:
> Otherwise, we get a lot of scary (but harmless) noise in the logs:
> 
> 2013-02-05 15:35:48.555+0000: 8637: error : qemuMonitorJSONCheckError:353 : internal error unable to execute QEMU command 'add-fd': Parameter 'fdset-id' expects an existing fdset-id
> 
> one for every qemu 1.2 binary that we probe.
> 
> * src/qemu/qemu_monitor_json.c (qemuMonitorJSONAddFd): During
> probe, avoid logging failures.
> ---
>  src/qemu/qemu_monitor_json.c | 10 +++++++++-
>  1 file changed, 9 insertions(+), 1 deletion(-)
> 
> diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c
> index 686cee9..a86d90c 100644
> --- a/src/qemu/qemu_monitor_json.c
> +++ b/src/qemu/qemu_monitor_json.c
> @@ -2660,8 +2660,16 @@ qemuMonitorJSONAddFd(qemuMonitorPtr mon, int fdset, int fd, const char *name)
> 
>      ret = qemuMonitorJSONCommandWithFd(mon, cmd, fd, &reply);
> 
> -    if (ret == 0)
> +    if (ret == 0) {
> +        /* qemu 1.2 lacks the functionality we need; but we have to
> +         * probe to find that out.  Don't log errors in that case.  */
> +        if (STREQ_NULLABLE(name, "/dev/null") &&
> +            qemuMonitorJSONHasError(reply, "GenericError")) {
> +            ret = -2;
> +            goto cleanup;
> +        }
>          ret = qemuMonitorJSONCheckError(cmd, reply);
> +    }
>      if (ret == 0) {
>          virJSONValuePtr data = virJSONValueObjectGet(reply, "return");

ACK

Daniel
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