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corosync/0002-fix-ifdown-udp.patch
Bin Liu 4560e27e9c Accepting request 535834 from home:BinLiu:branches:network:ha-clustering:Factory 
- Upgrade corosync-2.4.2 to corosync-2.4.3(fate#321385)
        doc: document watchdog_device parameter
        Main: Call mlockall after fork
        Totempg: remove duplicate memcpy in mcast_msg func
        Qdevice: fix spell errors in qdevice
        logconfig: Do not overwrite logger_subsys priority
        totemconfig: Prefer nodelist over bindnetaddr
        cpghum: Fix printf of size_t variable
        Qnetd lms: Use UTILS_PRI_RING_ID printf format str
        wd: Report error when close of wd fails
        votequorum: Don't update expected_votes display if value is too high
        votequorum: simplify reconfigure message handling
        quorumtool: Add option to show all node addresses
        main: Don't ask libqb to handle segv, it doesn't work
        man: Document -a option to corosync-quorumtool
        main: use syslog & printf directly for early log messages
        votequorum: make atb consistent on nodelist reload
        Fix typo: Destorying -> Destroying
        init: Add doc URIs to the systemd service files
        wd: fix typo
        corosync.conf.5: Fix watchdog documentation
        corosync.conf.5: add warning about slow watchdogs
        wd: remove extra capitalization typo
        corosync.conf.5: watchdog support is conditional
        notifyd: Add the community name to an SNMP trap
        Logsys: Change logsys syslog_priority priority
        totemrrp: Fix situation when all rings are faulty
        main: Display reason why cluster cannot be formed
        totem: Propagate totem initialization failure
        totemcrypto: Refactor symmetric key importing

OBS-URL: https://build.opensuse.org/request/show/535834
OBS-URL: https://build.opensuse.org/package/show/network:ha-clustering:Factory/corosync?expand=0&rev=113
2017-10-23 04:32:00 +00:00

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From 790794bc1f654fd1b4c8c2904c8d5c60374b99c1 Mon Sep 17 00:00:00 2001
From: Jan Friesse <jfriesse@redhat.com>
Date: Mon, 31 Jul 2017 18:05:18 +0200
Subject: [PATCH] totemudp: Add local loop support for unicast msgs
This patch intends to solve long time ifdown corosync problem. Idea is
to use multicast local socket also for sending unicast messages.
Together with testing what is current bind state it's possible to keep
pretending existence of old IP address instead of rebinding to localhost
what breaks a lot things badly.
Heavilly based on Yu, Zou <zouyu@shiqichuban.com> work. Also big thanks
to Bin Liu <bliu@suse.com> for testing and bringing some ideas.
Signed-off-by: Jan Friesse <jfriesse@redhat.com>
---
exec/totemudp.c | 215 +++++++++++++++++++++++++++++++++-----------------------
1 file changed, 128 insertions(+), 87 deletions(-)
diff --git a/exec/totemudp.c b/exec/totemudp.c
index 31d05704..47830e4b 100644
--- a/exec/totemudp.c
+++ b/exec/totemudp.c
@@ -207,8 +207,6 @@ static int totemudp_build_sockets (
struct totemudp_socket *sockets,
struct totem_ip_address *bound_to);
-static struct totem_ip_address localhost;
-
static void totemudp_instance_initialize (struct totemudp_instance *instance)
{
memset (instance, 0, sizeof (struct totemudp_instance));
@@ -269,6 +267,7 @@ static inline void ucast_sendmsg (
struct sockaddr_storage sockaddr;
struct iovec iovec;
int addrlen;
+ int send_sock;
/*
* Encrypt and digest the message
@@ -313,11 +312,19 @@ static inline void ucast_sendmsg (
#endif
+ if (instance->netif_bind_state == BIND_STATE_REGULAR) {
+ send_sock = instance->totemudp_sockets.mcast_send;
+ } else {
+ send_sock = instance->totemudp_sockets.local_mcast_loop[1];
+ msg_ucast.msg_name = NULL;
+ msg_ucast.msg_namelen = 0;
+ }
+
/*
* Transmit unicast message
* An error here is recovered by totemsrp
*/
- res = sendmsg (instance->totemudp_sockets.mcast_send, &msg_ucast,
+ res = sendmsg (send_sock, &msg_ucast,
MSG_NOSIGNAL);
if (res < 0) {
LOGSYS_PERROR (errno, instance->totemudp_log_level_debug,
@@ -380,18 +387,20 @@ static inline void mcast_sendmsg (
msg_mcast.msg_accrightslen = 0;
#endif
- /*
- * Transmit multicast message
- * An error here is recovered by totemsrp
- */
- res = sendmsg (instance->totemudp_sockets.mcast_send, &msg_mcast,
- MSG_NOSIGNAL);
- if (res < 0) {
- LOGSYS_PERROR (errno, instance->totemudp_log_level_debug,
- "sendmsg(mcast) failed (non-critical)");
- instance->stats->continuous_sendmsg_failures++;
- } else {
- instance->stats->continuous_sendmsg_failures = 0;
+ if (instance->netif_bind_state == BIND_STATE_REGULAR) {
+ /*
+ * Transmit multicast message
+ * An error here is recovered by totemsrp
+ */
+ res = sendmsg (instance->totemudp_sockets.mcast_send, &msg_mcast,
+ MSG_NOSIGNAL);
+ if (res < 0) {
+ LOGSYS_PERROR (errno, instance->totemudp_log_level_debug,
+ "sendmsg(mcast) failed (non-critical)");
+ instance->stats->continuous_sendmsg_failures++;
+ } else {
+ instance->stats->continuous_sendmsg_failures = 0;
+ }
}
/*
@@ -556,7 +565,6 @@ static void timer_function_netif_check_timeout (
struct totemudp_instance *instance = (struct totemudp_instance *)data;
int interface_up;
int interface_num;
- struct totem_ip_address *bind_address;
/*
* Build sockets for every interface
@@ -593,28 +601,31 @@ static void timer_function_netif_check_timeout (
qb_loop_poll_del (instance->totemudp_poll_handle,
instance->totemudp_sockets.mcast_recv);
close (instance->totemudp_sockets.mcast_recv);
+ instance->totemudp_sockets.mcast_recv = -1;
}
if (instance->totemudp_sockets.mcast_send > 0) {
close (instance->totemudp_sockets.mcast_send);
- }
- if (instance->totemudp_sockets.local_mcast_loop[0] > 0) {
- qb_loop_poll_del (instance->totemudp_poll_handle,
- instance->totemudp_sockets.local_mcast_loop[0]);
- close (instance->totemudp_sockets.local_mcast_loop[0]);
- close (instance->totemudp_sockets.local_mcast_loop[1]);
+ instance->totemudp_sockets.mcast_send = -1;
}
if (instance->totemudp_sockets.token > 0) {
qb_loop_poll_del (instance->totemudp_poll_handle,
instance->totemudp_sockets.token);
close (instance->totemudp_sockets.token);
+ instance->totemudp_sockets.token = -1;
}
if (interface_up == 0) {
+ if (instance->netif_bind_state == BIND_STATE_UNBOUND) {
+ log_printf (instance->totemudp_log_level_error,
+ "One of your ip addresses are now bound to localhost. "
+ "Corosync would not work correctly.");
+ exit(COROSYNC_DONE_FATAL_ERR);
+ }
+
/*
* Interface is not up
*/
instance->netif_bind_state = BIND_STATE_LOOPBACK;
- bind_address = &localhost;
/*
* Add a timer to retry building interfaces and request memb_gather_enter
@@ -630,34 +641,29 @@ static void timer_function_netif_check_timeout (
* Interface is up
*/
instance->netif_bind_state = BIND_STATE_REGULAR;
- bind_address = &instance->totem_interface->bindnet;
}
/*
* Create and bind the multicast and unicast sockets
*/
(void)totemudp_build_sockets (instance,
&instance->mcast_address,
- bind_address,
+ &instance->totem_interface->bindnet,
&instance->totemudp_sockets,
&instance->totem_interface->boundto);
- qb_loop_poll_add (
- instance->totemudp_poll_handle,
- QB_LOOP_MED,
- instance->totemudp_sockets.mcast_recv,
- POLLIN, instance, net_deliver_fn);
-
- qb_loop_poll_add (
- instance->totemudp_poll_handle,
- QB_LOOP_MED,
- instance->totemudp_sockets.local_mcast_loop[0],
- POLLIN, instance, net_deliver_fn);
+ if (instance->netif_bind_state == BIND_STATE_REGULAR) {
+ qb_loop_poll_add (
+ instance->totemudp_poll_handle,
+ QB_LOOP_MED,
+ instance->totemudp_sockets.mcast_recv,
+ POLLIN, instance, net_deliver_fn);
- qb_loop_poll_add (
- instance->totemudp_poll_handle,
- QB_LOOP_MED,
- instance->totemudp_sockets.token,
- POLLIN, instance, net_deliver_fn);
+ qb_loop_poll_add (
+ instance->totemudp_poll_handle,
+ QB_LOOP_MED,
+ instance->totemudp_sockets.token,
+ POLLIN, instance, net_deliver_fn);
+ }
totemip_copy (&instance->my_id, &instance->totem_interface->boundto);
@@ -708,6 +714,66 @@ static void totemudp_traffic_control_set(struct totemudp_instance *instance, int
#endif
}
+static int totemudp_build_local_sockets(
+ struct totemudp_instance *instance,
+ struct totemudp_socket *sockets)
+{
+ int i;
+ unsigned int sendbuf_size;
+ unsigned int recvbuf_size;
+ unsigned int optlen = sizeof (sendbuf_size);
+ int res;
+
+ /*
+ * Create local multicast loop socket
+ */
+ if (socketpair(AF_UNIX, SOCK_DGRAM, 0, sockets->local_mcast_loop) == -1) {
+ LOGSYS_PERROR (errno, instance->totemudp_log_level_warning,
+ "socket() failed");
+ return (-1);
+ }
+
+ for (i = 0; i < 2; i++) {
+ totemip_nosigpipe (sockets->local_mcast_loop[i]);
+ res = fcntl (sockets->local_mcast_loop[i], F_SETFL, O_NONBLOCK);
+ if (res == -1) {
+ LOGSYS_PERROR (errno, instance->totemudp_log_level_warning,
+ "Could not set non-blocking operation on multicast socket");
+ return (-1);
+ }
+ }
+
+ recvbuf_size = MCAST_SOCKET_BUFFER_SIZE;
+ sendbuf_size = MCAST_SOCKET_BUFFER_SIZE;
+
+ res = setsockopt (sockets->local_mcast_loop[0], SOL_SOCKET, SO_RCVBUF, &recvbuf_size, optlen);
+ if (res == -1) {
+ LOGSYS_PERROR (errno, instance->totemudp_log_level_debug,
+ "Unable to set SO_RCVBUF size on UDP local mcast loop socket");
+ return (-1);
+ }
+ res = setsockopt (sockets->local_mcast_loop[1], SOL_SOCKET, SO_SNDBUF, &sendbuf_size, optlen);
+ if (res == -1) {
+ LOGSYS_PERROR (errno, instance->totemudp_log_level_debug,
+ "Unable to set SO_SNDBUF size on UDP local mcast loop socket");
+ return (-1);
+ }
+
+ res = getsockopt (sockets->local_mcast_loop[0], SOL_SOCKET, SO_RCVBUF, &recvbuf_size, &optlen);
+ if (res == 0) {
+ log_printf (instance->totemudp_log_level_debug,
+ "Local receive multicast loop socket recv buffer size (%d bytes).", recvbuf_size);
+ }
+
+ res = getsockopt (sockets->local_mcast_loop[1], SOL_SOCKET, SO_SNDBUF, &sendbuf_size, &optlen);
+ if (res == 0) {
+ log_printf (instance->totemudp_log_level_debug,
+ "Local transmit multicast loop socket send buffer size (%d bytes).", sendbuf_size);
+ }
+
+ return (0);
+}
+
static int totemudp_build_sockets_ip (
struct totemudp_instance *instance,
struct totem_ip_address *mcast_address,
@@ -730,7 +796,8 @@ static int totemudp_build_sockets_ip (
int res;
int flag;
uint8_t sflag;
- int i;
+
+
/*
* Create multicast recv socket
@@ -760,24 +827,6 @@ static int totemudp_build_sockets_ip (
return (-1);
}
- /*
- * Create local multicast loop socket
- */
- if (socketpair(AF_UNIX, SOCK_DGRAM, 0, sockets->local_mcast_loop) == -1) {
- LOGSYS_PERROR (errno, instance->totemudp_log_level_warning,
- "socket() failed");
- return (-1);
- }
-
- for (i = 0; i < 2; i++) {
- totemip_nosigpipe (sockets->local_mcast_loop[i]);
- res = fcntl (sockets->local_mcast_loop[i], F_SETFL, O_NONBLOCK);
- if (res == -1) {
- LOGSYS_PERROR (errno, instance->totemudp_log_level_warning,
- "Could not set non-blocking operation on multicast socket");
- return (-1);
- }
- }
@@ -875,18 +924,6 @@ static int totemudp_build_sockets_ip (
"Unable to set SO_SNDBUF size on UDP mcast socket");
return (-1);
}
- res = setsockopt (sockets->local_mcast_loop[0], SOL_SOCKET, SO_RCVBUF, &recvbuf_size, optlen);
- if (res == -1) {
- LOGSYS_PERROR (errno, instance->totemudp_log_level_debug,
- "Unable to set SO_RCVBUF size on UDP local mcast loop socket");
- return (-1);
- }
- res = setsockopt (sockets->local_mcast_loop[1], SOL_SOCKET, SO_SNDBUF, &sendbuf_size, optlen);
- if (res == -1) {
- LOGSYS_PERROR (errno, instance->totemudp_log_level_debug,
- "Unable to set SO_SNDBUF size on UDP local mcast loop socket");
- return (-1);
- }
res = getsockopt (sockets->mcast_recv, SOL_SOCKET, SO_RCVBUF, &recvbuf_size, &optlen);
if (res == 0) {
@@ -900,17 +937,6 @@ static int totemudp_build_sockets_ip (
"Transmit multicast socket send buffer size (%d bytes).", sendbuf_size);
}
- res = getsockopt (sockets->local_mcast_loop[0], SOL_SOCKET, SO_RCVBUF, &recvbuf_size, &optlen);
- if (res == 0) {
- log_printf (instance->totemudp_log_level_debug,
- "Local receive multicast loop socket recv buffer size (%d bytes).", recvbuf_size);
- }
-
- res = getsockopt (sockets->local_mcast_loop[1], SOL_SOCKET, SO_SNDBUF, &sendbuf_size, &optlen);
- if (res == 0) {
- log_printf (instance->totemudp_log_level_debug,
- "Local transmit multicast loop socket send buffer size (%d bytes).", sendbuf_size);
- }
/*
@@ -1178,8 +1204,19 @@ int totemudp_initialize (
instance->totemudp_target_set_completed = target_set_completed;
- totemip_localhost (instance->mcast_address.family, &localhost);
- localhost.nodeid = instance->totem_config->node_id;
+ /*
+ * Create static local mcast sockets
+ */
+ if (totemudp_build_local_sockets(instance, &instance->totemudp_sockets) == -1) {
+ free(instance);
+ return (-1);
+ }
+
+ qb_loop_poll_add (
+ instance->totemudp_poll_handle,
+ QB_LOOP_MED,
+ instance->totemudp_sockets.local_mcast_loop[0],
+ POLLIN, instance, net_deliver_fn);
/*
* RRP layer isn't ready to receive message because it hasn't
@@ -1242,10 +1279,14 @@ int totemudp_recv_flush (void *udp_context)
for (i = 0; i < 2; i++) {
sock = -1;
if (i == 0) {
- sock = instance->totemudp_sockets.mcast_recv;
+ if (instance->netif_bind_state == BIND_STATE_REGULAR) {
+ sock = instance->totemudp_sockets.mcast_recv;
+ } else {
+ continue ;
+ }
}
if (i == 1) {
- sock = instance->totemudp_sockets.local_mcast_loop[0];
+ sock = instance->totemudp_sockets.local_mcast_loop[0];
}
assert(sock != -1);
--
2.12.3
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