summaryrefslogtreecommitdiffstats
path: root/rpc
diff options
context:
space:
mode:
authorNiels de Vos <ndevos@redhat.com>2015-02-17 12:12:11 +0100
committerKaleb KEITHLEY <kkeithle@redhat.com>2015-03-17 05:10:17 -0700
commit6b3704990257643da54100d8581856a7d2c72f86 (patch)
tree53256b40fc8f36aa0989649a69867acd2fa38faa /rpc
parent2b97b57cd8c71cb07b7002cf3483e9cfc9403c58 (diff)
socket: use TCP_USER_TIMEOUT to detect client failures quicker
Use the network.ping-timeout to set the TCP_USER_TIMEOUT socket option (see 'man 7 tcp'). The option sets the transport.tcp-user-timeout option that is handled in the rpc/socket layer on the protocol/server side. This socket option makes detecting unclean disconnected clients more reliable. When the socket gets closed, any locks that the client held are been released. This makes it possible to reduce the fail-over time for applications that run on systems that became unreachable due to a network partition or general system error client-side (kernel panic, hang, ...). It is not trivial to create a test-case for this at the moment. We need a client that unclean disconnects and an other client that tries to take over the lock from the disconnected client. URL: http://supercolony.gluster.org/pipermail/gluster-devel/2014-May/040755.html Change-Id: I5e5f540a49abfb5f398291f1818583a63a5f4bb4 BUG: 1129787 Signed-off-by: Niels de Vos <ndevos@redhat.com> Reviewed-on: http://review.gluster.org/8065 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: soumya k <skoduri@redhat.com> Reviewed-by: Santosh Pradhan <santosh.pradhan@gmail.com> Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
Diffstat (limited to 'rpc')
-rw-r--r--rpc/rpc-lib/src/rpc-transport.c7
-rw-r--r--rpc/rpc-lib/src/rpc-transport.h2
-rw-r--r--rpc/rpc-transport/socket/src/socket.c55
-rw-r--r--rpc/rpc-transport/socket/src/socket.h1
4 files changed, 56 insertions, 9 deletions
diff --git a/rpc/rpc-lib/src/rpc-transport.c b/rpc/rpc-lib/src/rpc-transport.c
index f6774b7..23fbf37 100644
--- a/rpc/rpc-lib/src/rpc-transport.c
+++ b/rpc/rpc-lib/src/rpc-transport.c
@@ -572,7 +572,7 @@ out:
//why call it if you dont set it.
int
rpc_transport_keepalive_options_set (dict_t *options, int32_t interval,
- int32_t time)
+ int32_t time, int32_t timeout)
{
int ret = -1;
@@ -588,6 +588,11 @@ rpc_transport_keepalive_options_set (dict_t *options, int32_t interval,
"transport.socket.keepalive-time", time);
if (ret)
goto out;
+
+ ret = dict_set_int32 (options,
+ "transport.tcp-user-timeout", timeout);
+ if (ret)
+ goto out;
out:
return ret;
}
diff --git a/rpc/rpc-lib/src/rpc-transport.h b/rpc/rpc-lib/src/rpc-transport.h
index d1c650e..d0572a1 100644
--- a/rpc/rpc-lib/src/rpc-transport.h
+++ b/rpc/rpc-lib/src/rpc-transport.h
@@ -306,7 +306,7 @@ rpc_transport_pollin_destroy (rpc_transport_pollin_t *pollin);
int
rpc_transport_keepalive_options_set (dict_t *options, int32_t interval,
- int32_t time);
+ int32_t time, int32_t timeout);
int
rpc_transport_unix_options_build (dict_t **options, char *filepath,
diff --git a/rpc/rpc-transport/socket/src/socket.c b/rpc/rpc-transport/socket/src/socket.c
index 2b61eb4..054a1c0 100644
--- a/rpc/rpc-transport/socket/src/socket.c
+++ b/rpc/rpc-transport/socket/src/socket.c
@@ -31,9 +31,15 @@
#include "xdr-nfs3.h"
#include "rpcsvc.h"
+/* for TCP_USER_TIMEOUT */
+#if !defined(TCP_USER_TIMEOUT) && defined(GF_LINUX_HOST_OS)
+#include <linux/tcp.h>
+#else
+#include <netinet/tcp.h>
+#endif
+
#include <fcntl.h>
#include <errno.h>
-#include <netinet/tcp.h>
#include <rpc/xdr.h>
#include <sys/ioctl.h>
#define GF_LOG_ERRNO(errno) ((errno == ENOTCONN) ? GF_LOG_DEBUG : GF_LOG_ERROR)
@@ -857,10 +863,12 @@ __socket_nodelay (int fd)
static int
-__socket_keepalive (int fd, int family, int keepalive_intvl, int keepalive_idle)
+__socket_keepalive (int fd, int family, int keepalive_intvl,
+ int keepalive_idle, int timeout)
{
int on = 1;
int ret = -1;
+ int timeout_ms = timeout * 1000;
ret = setsockopt (fd, SOL_SOCKET, SO_KEEPALIVE, &on, sizeof (on));
if (ret == -1) {
@@ -890,7 +898,7 @@ __socket_keepalive (int fd, int family, int keepalive_intvl, int keepalive_idle)
goto done;
ret = setsockopt (fd, IPPROTO_TCP, TCP_KEEPIDLE, &keepalive_idle,
- sizeof (keepalive_intvl));
+ sizeof (keepalive_idle));
if (ret == -1) {
gf_log ("socket", GF_LOG_WARNING,
"failed to set keep idle %d on socket %d, %s",
@@ -905,11 +913,23 @@ __socket_keepalive (int fd, int family, int keepalive_intvl, int keepalive_idle)
keepalive_intvl, fd, strerror(errno));
goto err;
}
+
+#if defined(TCP_USER_TIMEOUT)
+ ret = setsockopt (fd, IPPROTO_TCP , TCP_USER_TIMEOUT, &timeout_ms,
+ sizeof (timeout_ms));
+ if (ret == -1) {
+ gf_log ("socket", GF_LOG_WARNING, "failed to set "
+ "TCP_USER_TIMEOUT %d on socket %d, %s", timeout_ms, fd,
+ strerror(errno));
+ goto err;
+ }
+#endif
#endif
done:
- gf_log (THIS->name, GF_LOG_TRACE, "Keep-alive enabled for socket %d, interval "
- "%d, idle: %d", fd, keepalive_intvl, keepalive_idle);
+ gf_log (THIS->name, GF_LOG_TRACE, "Keep-alive enabled for socket %d, "
+ "interval %d, idle: %d, timeout: %d", fd, keepalive_intvl,
+ keepalive_idle, timeout);
err:
return ret;
@@ -2642,7 +2662,8 @@ socket_server_event_handler (int fd, int idx, void *data,
ret = __socket_keepalive (new_sock,
new_sockaddr.ss_family,
priv->keepaliveintvl,
- priv->keepaliveidle);
+ priv->keepaliveidle,
+ priv->timeout);
if (ret == -1)
gf_log (this->name, GF_LOG_WARNING,
"Failed to set keep-alive: %s",
@@ -2986,7 +3007,8 @@ socket_connect (rpc_transport_t *this, int port)
ret = __socket_keepalive (priv->sock,
sa_family,
priv->keepaliveintvl,
- priv->keepaliveidle);
+ priv->keepaliveidle,
+ priv->timeout);
if (ret == -1)
gf_log (this->name, GF_LOG_ERROR,
"Failed to set keep-alive: %s",
@@ -3577,6 +3599,7 @@ reconfigure (rpc_transport_t *this, dict_t *options)
char *optstr = NULL;
int ret = 0;
uint64_t windowsize = 0;
+ uint32_t timeout = 0;
GF_VALIDATE_OR_GOTO ("socket", this, out);
GF_VALIDATE_OR_GOTO ("socket", this->private, out);
@@ -3605,6 +3628,13 @@ reconfigure (rpc_transport_t *this, dict_t *options)
else
priv->keepalive = 1;
+ if (dict_get_uint32 (this->options, "transport.tcp-user-timeout",
+ &timeout) == 0) {
+ priv->timeout = timeout;
+ gf_log (this->name, GF_LOG_DEBUG, "Reconfigued "
+ "transport.tcp-user-timeout=%d", timeout);
+ }
+
optstr = NULL;
if (dict_get_str (this->options, "tcp-window-size",
&optstr) == 0) {
@@ -3659,6 +3689,7 @@ socket_init (rpc_transport_t *this)
uint64_t windowsize = GF_DEFAULT_SOCKET_WINDOW_SIZE;
char *optstr = NULL;
uint32_t keepalive = 0;
+ uint32_t timeout = 0;
uint32_t backlog = 0;
int session_id = 0;
int32_t cert_depth = 1;
@@ -3771,6 +3802,13 @@ socket_init (rpc_transport_t *this)
priv->keepaliveidle = keepalive;
}
+ if (dict_get_uint32 (this->options, "transport.tcp-user-timeout",
+ &timeout) == 0) {
+ priv->timeout = timeout;
+ }
+ gf_log (this->name, GF_LOG_DEBUG, "Configued "
+ "transport.tcp-user-timeout=%d", priv->timeout);
+
if (dict_get_uint32 (this->options,
"transport.socket.listen-backlog",
&backlog) == 0) {
@@ -4027,6 +4065,9 @@ struct volume_options options[] = {
.min = GF_MIN_SOCKET_WINDOW_SIZE,
.max = GF_MAX_SOCKET_WINDOW_SIZE
},
+ { .key = {"transport.tcp-user-timeout"},
+ .type = GF_OPTION_TYPE_INT,
+ },
{ .key = {"transport.socket.nodelay"},
.type = GF_OPTION_TYPE_BOOL
},
diff --git a/rpc/rpc-transport/socket/src/socket.h b/rpc/rpc-transport/socket/src/socket.h
index 6a8ab87..2a84e26 100644
--- a/rpc/rpc-transport/socket/src/socket.h
+++ b/rpc/rpc-transport/socket/src/socket.h
@@ -216,6 +216,7 @@ typedef struct {
int keepalive;
int keepaliveidle;
int keepaliveintvl;
+ int timeout;
uint32_t backlog;
gf_boolean_t read_fail_log;
gf_boolean_t ssl_enabled; /* outbound I/O */