Re: [libvirt] [PATCH] virNetDevOpenvswitchInterfaceStats: Be more forgiving when fetching stats

https://bugzilla.redhat.com/show_bug.cgi?id=1461270 When fetching stats for a vhost-user type of interface, we run couple of ovs-vsctl commands and parse their output. However, not all stats exist at all times, for instance "rx_dropped" or "tx_errors" can be missing. Thing is, we ask for a bulk of statistics and if one of them is missing an error is reported instead of returning the rest. Since we ignore errors, we fail to set statistics. Fix this by asking for each piece alone. Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com&gt; --- src/util/virnetdevopenvswitch.c | 96 +++++++++++++++-------------------------- 1 file changed, 34 insertions(+), 62 deletions(-) diff --git a/src/util/virnetdevopenvswitch.c b/src/util/virnetdevopenvswitch.c index 8f7215e06..6848f65b7 100644 --- a/src/util/virnetdevopenvswitch.c +++ b/src/util/virnetdevopenvswitch.c @@ -340,67 +334,45 @@ virNetDevOpenvswitchInterfaceStats(const char *ifname,

+ if (!gotStats) { virReportError(VIR_ERR_INTERNAL_ERROR, "%s", - _("Fail to parse ovs-vsctl output")); + _("Interface doesn't have statistics"));

goto cleanup;