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authorKotresh H R <khiremat@redhat.com>2014-01-08 10:52:28 +0530
committerVijay Bellur <vbellur@redhat.com>2014-01-14 22:24:58 -0800
commit2f499e85a4ae0ac1e84785daa60a5bbfe979cc7f (patch)
treea80b6211c52122cf54e13fab394aa19baba20f03 /xlators/mgmt/glusterd/src
parent7d89ec77763dc5076379753c736f7fce2bedd9ec (diff)
glusterd/geo-rep : Allow volume to stop if geo-rep is not active.
In staging phase of volume stop, code is added to read the state_file for each slave of the master to which the volume belongs. If any of the geo-rep session is active with at least one slave, volume is not allowed to stop else it is allowed. Change-Id: I4a01a357fc86b872e9635b3d19998cdbd9545114 BUG: 1049727 Signed-off-by: Kotresh H R <khiremat@redhat.com> Reviewed-on: http://review.gluster.org/6663 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
Diffstat (limited to 'xlators/mgmt/glusterd/src')
-rw-r--r--xlators/mgmt/glusterd/src/glusterd-geo-rep.c152
-rw-r--r--xlators/mgmt/glusterd/src/glusterd-op-sm.h5
-rw-r--r--xlators/mgmt/glusterd/src/glusterd-volume-ops.c20
3 files changed, 176 insertions, 1 deletions
diff --git a/xlators/mgmt/glusterd/src/glusterd-geo-rep.c b/xlators/mgmt/glusterd/src/glusterd-geo-rep.c
index c5c76e1..849480a 100644
--- a/xlators/mgmt/glusterd/src/glusterd-geo-rep.c
+++ b/xlators/mgmt/glusterd/src/glusterd-geo-rep.c
@@ -1295,6 +1295,158 @@ glusterd_check_gsync_running (glusterd_volinfo_t *volinfo, gf_boolean_t *flag)
return 0;
}
+/*
+ * is_geo_rep_active:
+ * This function reads the state_file and sets is_active to 1 if the
+ * monitor status is neither "Stopped" or "Not Started"
+ *
+ * RETURN VALUE:
+ * 0: On successful read of state_file.
+ * -1: error.
+ */
+
+static int
+is_geo_rep_active (glusterd_volinfo_t *volinfo, char *slave,
+ char *conf_path, int *is_active)
+{
+ dict_t *confd = NULL;
+ char *statefile = NULL;
+ char *master = NULL;
+ char monitor_status[PATH_MAX] = "";
+ int ret = -1;
+ xlator_t *this = NULL;
+
+ this = THIS;
+ GF_ASSERT (this);
+
+ master = volinfo->volname;
+
+ confd = dict_new ();
+ if (!confd) {
+ gf_log ("", GF_LOG_ERROR, "Not able to create dict.");
+ goto out;
+ }
+
+ ret = glusterd_gsync_get_config (master, slave, conf_path,
+ confd);
+ if (ret) {
+ gf_log ("", GF_LOG_ERROR, "Unable to get configuration data "
+ "for %s(master), %s(slave)", master, slave);
+ ret = -1;
+ goto out;
+ }
+
+ ret = dict_get_param (confd, "state_file", &statefile);
+ if (ret) {
+ gf_log ("", GF_LOG_ERROR, "Unable to get state_file's name "
+ "for %s(master), %s(slave). Please check gsync "
+ "config file.", master, slave);
+ ret = -1;
+ goto out;
+ }
+
+ ret = glusterd_gsync_read_frm_status (statefile, monitor_status,
+ sizeof (monitor_status));
+ if (ret <= 0) {
+ gf_log ("", GF_LOG_ERROR, "Unable to read the status "
+ "file for %s(master), %s(slave)", master, slave);
+ strncpy (monitor_status, "defunct", sizeof (monitor_status));
+ }
+
+ if ((!strcmp(monitor_status, "Stopped")) ||
+ (!strcmp(monitor_status, "Not Started"))) {
+ *is_active = 0;
+ } else {
+ *is_active = 1;
+ }
+ ret = 0;
+out:
+ if (confd)
+ dict_destroy (confd);
+ return ret;
+}
+
+/*
+ * _get_slave_status:
+ * Called for each slave in the volume from dict_foreach.
+ * It calls is_geo_rep_active to get the monitor status.
+ *
+ * RETURN VALUE:
+ * 0: On successful read of state_file from is_geo_rep_active.
+ * When it is found geo-rep is already active from previous calls.
+ * When there is no slave.
+ * -1: On error.
+ */
+
+int
+_get_slave_status (dict_t *dict, char *key, data_t *value, void *data)
+{
+ gsync_status_param_t *param = NULL;
+ char *slave = NULL;
+ char *slave_ip = NULL;
+ char *slave_vol = NULL;
+ char *errmsg = NULL;
+ char conf_path[PATH_MAX] = "";
+ int ret = -1;
+ glusterd_conf_t *priv = NULL;
+ xlator_t *this = NULL;
+
+ param = (gsync_status_param_t *)data;
+
+ GF_ASSERT (param);
+ GF_ASSERT (param->volinfo);
+
+ if (param->is_active) {
+ ret = 0;
+ goto out;
+ }
+
+ this = THIS;
+ GF_ASSERT (this);
+
+ if (this)
+ priv = this->private;
+ if (priv == NULL) {
+ gf_log ("", GF_LOG_ERROR, "priv of glusterd not present");
+ goto out;
+ }
+
+ slave = strchr(value->data, ':');
+ if (!slave) {
+ ret = 0;
+ goto out;
+ }
+ slave++;
+
+ ret = glusterd_get_slave_info (slave, &slave_ip, &slave_vol, &errmsg);
+ if (ret) {
+ if (errmsg)
+ gf_log ("", GF_LOG_ERROR, "Unable to fetch "
+ "slave details. Error: %s", errmsg);
+ else
+ gf_log ("", GF_LOG_ERROR,
+ "Unable to fetch slave details.");
+ ret = -1;
+ goto out;
+ }
+
+ ret = snprintf (conf_path, sizeof(conf_path) - 1,
+ "%s/"GEOREP"/%s_%s_%s/gsyncd.conf",
+ priv->workdir, param->volinfo->volname,
+ slave_ip, slave_vol);
+ if (ret < 0) {
+ gf_log ("", GF_LOG_ERROR, "Unable to assign conf_path.");
+ ret = -1;
+ goto out;
+ }
+ conf_path[ret] = '\0';
+
+ ret = is_geo_rep_active (param->volinfo,slave, conf_path,
+ &param->is_active);
+out:
+ return ret;
+}
+
static int
glusterd_op_verify_gsync_running (glusterd_volinfo_t *volinfo,
char *slave, char *conf_path,
diff --git a/xlators/mgmt/glusterd/src/glusterd-op-sm.h b/xlators/mgmt/glusterd/src/glusterd-op-sm.h
index 62f9919..1125368 100644
--- a/xlators/mgmt/glusterd/src/glusterd-op-sm.h
+++ b/xlators/mgmt/glusterd/src/glusterd-op-sm.h
@@ -165,6 +165,11 @@ typedef struct glusterd_gsync_status_temp {
char *node;
}glusterd_gsync_status_temp_t;
+typedef struct gsync_status_param {
+ int is_active;
+ glusterd_volinfo_t *volinfo;
+}gsync_status_param_t;
+
typedef enum cli_cmd_type_ {
PER_REPLICA,
ALL_REPLICA,
diff --git a/xlators/mgmt/glusterd/src/glusterd-volume-ops.c b/xlators/mgmt/glusterd/src/glusterd-volume-ops.c
index df2562b..db9f39c 100644
--- a/xlators/mgmt/glusterd/src/glusterd-volume-ops.c
+++ b/xlators/mgmt/glusterd/src/glusterd-volume-ops.c
@@ -30,6 +30,8 @@
#define glusterd_op_start_volume_args_get(dict, volname, flags) \
glusterd_op_stop_volume_args_get (dict, volname, flags)
+extern int
+_get_slave_status (dict_t *this, char *key, data_t *value, void *data);
int
__glusterd_handle_create_volume (rpcsvc_request_t *req)
@@ -1059,6 +1061,7 @@ glusterd_op_stage_stop_volume (dict_t *dict, char **op_errstr)
glusterd_volinfo_t *volinfo = NULL;
char msg[2048] = {0};
xlator_t *this = NULL;
+ gsync_status_param_t param = {0,};
this = THIS;
GF_ASSERT (this);
@@ -1102,7 +1105,22 @@ glusterd_op_stage_stop_volume (dict_t *dict, char **op_errstr)
if (ret && (is_run == _gf_false))
gf_log (this->name, GF_LOG_WARNING, "Unable to get the status"
" of active "GEOREP" session");
- if (is_run) {
+
+ param.volinfo = volinfo;
+ ret = dict_foreach (volinfo->gsync_slaves, _get_slave_status, &param);
+
+ if (ret) {
+ gf_log (this->name, GF_LOG_WARNING, "_get_slave_satus failed");
+ snprintf (msg, sizeof(msg), GEOREP" Unable to get the status "
+ "of active "GEOREP" session for the volume '%s'.\n"
+ "Please check the log file for more info. Use "
+ "'force' option to ignore and stop the volume.",
+ volname);
+ ret = -1;
+ goto out;
+ }
+
+ if (is_run && param.is_active) {
gf_log (this->name, GF_LOG_WARNING, GEOREP" sessions active"
"for the volume %s ", volname);
snprintf (msg, sizeof(msg), GEOREP" sessions are active "