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-rw-r--r--xlators/protocol/client/src/client.c165
1 files changed, 160 insertions, 5 deletions
diff --git a/xlators/protocol/client/src/client.c b/xlators/protocol/client/src/client.c
index 229e0191725..8955e237dee 100644
--- a/xlators/protocol/client/src/client.c
+++ b/xlators/protocol/client/src/client.c
@@ -40,6 +40,81 @@ int client_handshake (xlator_t *this, struct rpc_clnt *rpc);
void client_start_ping (void *data);
int client_init_rpc (xlator_t *this);
int client_destroy_rpc (xlator_t *this);
+int client_mark_fd_bad (xlator_t *this);
+
+int32_t
+client_type_to_gf_type (short l_type)
+{
+ int32_t gf_type;
+
+ switch (l_type) {
+ case F_RDLCK:
+ gf_type = GF_LK_F_RDLCK;
+ break;
+ case F_WRLCK:
+ gf_type = GF_LK_F_WRLCK;
+ break;
+ case F_UNLCK:
+ gf_type = GF_LK_F_UNLCK;
+ break;
+ }
+
+ return gf_type;
+}
+
+uint32_t
+client_get_lk_ver (clnt_conf_t *conf)
+{
+ uint32_t lk_ver = 0;
+
+ GF_VALIDATE_OR_GOTO ("client", conf, out);
+
+ pthread_mutex_lock (&conf->lock);
+ {
+ lk_ver = conf->lk_version;
+ }
+ pthread_mutex_unlock (&conf->lock);
+out:
+ return lk_ver;
+}
+
+void
+client_grace_timeout (void *data)
+{
+ int ver = 0;
+ xlator_t *this = NULL;
+ struct clnt_conf *conf = NULL;
+ struct rpc_clnt *rpc = NULL;
+
+ GF_VALIDATE_OR_GOTO ("client", data, out);
+
+ this = THIS;
+
+ rpc = (struct rpc_clnt *) data;
+
+ conf = (struct clnt_conf *) this->private;
+
+ pthread_mutex_lock (&conf->lock);
+ {
+ ver = ++conf->lk_version;
+ /* ver == 0 is a special value used by server
+ to notify client that this is a fresh connect.*/
+ if (ver == 0)
+ ver = ++conf->lk_version;
+
+ gf_timer_call_cancel (this->ctx, conf->grace_timer);
+ conf->grace_timer = NULL;
+ }
+ pthread_mutex_unlock (&conf->lock);
+
+ gf_log (this->name, GF_LOG_WARNING,
+ "client grace timer expired, updating "
+ "the lk-version to %d", ver);
+
+ client_mark_fd_bad (this);
+out:
+ return;
+}
int
client_submit_request (xlator_t *this, void *req, call_frame_t *frame,
@@ -828,7 +903,6 @@ out:
}
-
int32_t
client_flush (call_frame_t *frame, xlator_t *this, fd_t *fd)
{
@@ -1455,7 +1529,6 @@ out:
return 0;
}
-
int32_t
client_lk (call_frame_t *frame, xlator_t *this, fd_t *fd, int32_t cmd,
struct gf_flock *lock)
@@ -1841,7 +1914,7 @@ out:
}
- int
+int
client_mark_fd_bad (xlator_t *this)
{
clnt_conf_t *conf = NULL;
@@ -1908,11 +1981,42 @@ client_rpc_notify (struct rpc_clnt *rpc, void *mydata, rpc_clnt_event_t event,
conf->last_sent_event = GF_EVENT_CHILD_UP;
}
}
+
+ /* Cancel grace timer if set */
+ pthread_mutex_lock (&conf->lock);
+ {
+ if (conf->grace_timer) {
+ gf_log (this->name, GF_LOG_WARNING,
+ "Cancelling the grace timer");
+
+ gf_timer_call_cancel (this->ctx,
+ conf->grace_timer);
+ conf->grace_timer = NULL;
+ }
+ }
+ pthread_mutex_unlock (&conf->lock);
+
break;
}
case RPC_CLNT_DISCONNECT:
+ /* client_mark_fd_bad (this); */
- client_mark_fd_bad (this);
+ pthread_mutex_lock (&conf->lock);
+ {
+ if (conf->grace_timer) {
+ gf_log (this->name, GF_LOG_DEBUG,
+ "Client grace timer is already set");
+ } else {
+ gf_log (this->name, GF_LOG_WARNING,
+ "Registering a grace timer");
+ conf->grace_timer =
+ gf_timer_call_after (this->ctx,
+ conf->grace_tv,
+ client_grace_timeout,
+ conf->rpc);
+ }
+ }
+ pthread_mutex_unlock (&conf->lock);
if (!conf->skip_notify) {
if (conf->connected)
@@ -2107,6 +2211,40 @@ out:
int
+client_init_grace_timer (xlator_t *this, dict_t *options,
+ clnt_conf_t *conf)
+{
+ char *lk_heal = NULL;
+ int32_t ret = -1;
+ int32_t grace_timeout = -1;
+
+ GF_VALIDATE_OR_GOTO ("client", this, out);
+ GF_VALIDATE_OR_GOTO (this->name, options, out);
+ GF_VALIDATE_OR_GOTO (this->name, conf, out);
+
+ conf->lk_heal = _gf_true;
+
+ ret = dict_get_str (options, "lk-heal", &lk_heal);
+ if (!ret)
+ gf_string2boolean (lk_heal, &conf->lk_heal);
+
+ ret = dict_get_int32 (options, "grace-timeout", &grace_timeout);
+ if (!ret)
+ conf->grace_tv.tv_sec = grace_timeout;
+ else
+ conf->grace_tv.tv_sec = 10;
+
+ conf->grace_tv.tv_usec = 0;
+
+ gf_log (this->name, GF_LOG_INFO, "lk-heal = %s",
+ (conf->lk_heal) ? "on" : "off");
+
+ ret = 0;
+out:
+ return ret;
+}
+
+int
reconfigure (xlator_t *this, dict_t *options)
{
clnt_conf_t *conf = NULL;
@@ -2153,6 +2291,10 @@ reconfigure (xlator_t *this, dict_t *options)
}
}
+ ret = client_init_grace_timer (this, options, conf);
+ if (ret)
+ goto out;
+
ret = 0;
out:
return ret;
@@ -2186,6 +2328,14 @@ init (xlator_t *this)
pthread_mutex_init (&conf->lock, NULL);
INIT_LIST_HEAD (&conf->saved_fds);
+ /* Initialize parameters for lock self healing*/
+ conf->lk_version = 1;
+ conf->grace_timer = NULL;
+
+ ret = client_init_grace_timer (this, this->options, conf);
+ if (ret)
+ goto out;
+
LOCK_INIT (&conf->rec_lock);
conf->last_sent_event = -1; /* To start with we don't have any events */
@@ -2207,7 +2357,6 @@ init (xlator_t *this)
goto out;
}
-
ret = client_init_rpc (this);
out:
if (ret)
@@ -2409,5 +2558,11 @@ struct volume_options options[] = {
{ .key = {"client-bind-insecure"},
.type = GF_OPTION_TYPE_BOOL
},
+ { .key = {"lk-heal"},
+ .type = GF_OPTION_TYPE_STR
+ },
+ { .key = {"grace-timeout"},
+ .type = GF_OPTION_TYPE_INT
+ },
{ .key = {NULL} },
};