1. When switching CPUs to offline/online in a system more than 128 cpus
2. When using virsh to destroy domain in a system with more interface
All of above happens nl_recv returned with error: No buffer space available.
This patch set socket buffer size to 128K and turn on message peeking for nl_recv,
as this would solve this problem totally and permanetly.
LTC-Bugzilla: #133359 #125768
Signed-off-by: Leno Hou <houqy@xxxxxxxxxxxxxxxxxx>
Cc: Wenyi Gao <wenyi@xxxxxxxxxxxxxxxxxx>
---
src/util/virnetlink.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/src/util/virnetlink.c b/src/util/virnetlink.c
index 679b48e..c8c9fe0 100644
--- a/src/util/virnetlink.c
+++ b/src/util/virnetlink.c
@@ -696,6 +696,14 @@ virNetlinkEventServiceStart(unsigned int protocol, unsigned int groups)
goto error_server;
}
+ if (nl_socket_set_buffer_size(srv->netlinknh, 131702, 0) < 0) {
+ virReportSystemError(errno,
+ "%s",_("cannot set netlink socket buffer size to 128k"));
+ goto error_server;
+ }
+
+ nl_socket_enable_msg_peek(srv->netlinknh);
+
if ((srv->eventwatch = virEventAddHandle(fd,
VIR_EVENT_HANDLE_READABLE,
virNetlinkEventCallback,
--
1.9.1
--
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