On Sat, 24 Aug 2013 22:15:16 +0800 Drunkard Zhang <gongfan193@xxxxxxxxx> wrote: > > May be we can enable debug for short time when > > OPS is not working: > > > > # Start debug for 10ms > > echo 20 > /proc/sys/net/ipv4/vs/debug_level > > usleep 10000 > > # Stop debug > > echo 0 > /proc/sys/net/ipv4/vs/debug_level Just some general notes on debugging. Debug verbose levels: - 1 is least verbose - 12 is most verbose - 0 disables debugging Kernel needs to be compiled with CONFIG_IP_VS_DEBUG=y To get even more detailed debugging. The macro IP_VS_DBG_PKT uses debug_pr() to print its messages. If the kernel is configured with dynamic debug (CONFIG_DYNAMIC_DEBUG), you will not see these messages. To enable these messages, do the following: mount -t debugfs none /sys/kernel/debug/ cat /sys/kernel/debug/dynamic_debug/control | grep ipvs echo "func ip_vs_tcpudp_debug_packet_v6 +p" > /sys/kernel/debug/dynamic_debug/control echo "func ip_vs_tcpudp_debug_packet_v4 +p" > /sys/kernel/debug/dynamic_debug/control -- Best regards, Jesper Dangaard Brouer MSc.CS, Sr. Network Kernel Developer at Red Hat Author of http://www.iptv-analyzer.org LinkedIn: http://www.linkedin.com/in/brouer -- To unsubscribe from this list: send the line "unsubscribe lvs-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
