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-rw-r--r--xlators/mgmt/glusterd/src/glusterd-op-sm.c359
1 files changed, 359 insertions, 0 deletions
diff --git a/xlators/mgmt/glusterd/src/glusterd-op-sm.c b/xlators/mgmt/glusterd/src/glusterd-op-sm.c
index 9db4c2c1949..82eb6b05d6d 100644
--- a/xlators/mgmt/glusterd/src/glusterd-op-sm.c
+++ b/xlators/mgmt/glusterd/src/glusterd-op-sm.c
@@ -2364,6 +2364,11 @@ glusterd_op_stage_gsync_set (dict_t *dict, char **op_errstr)
ret = gsync_verify_config_options (dict, op_errstr);
goto out;
+
+ case GF_GSYNC_OPTION_TYPE_ROTATE:
+ /* checks same as status mode */
+ ret = glusterd_verify_gsync_status_opts(dict, op_errstr);
+ goto out;
}
ret = glusterd_op_gsync_args_get (dict, op_errstr, &volname, &slave);
@@ -4372,8 +4377,358 @@ glusterd_get_gsync_status (dict_t *dict, char **op_errstr, dict_t *rsp_dict)
out:
gf_log ("", GF_LOG_DEBUG, "Returning %d", ret);
return ret;
+}
+
+int
+glusterd_send_sigstop (pid_t pid)
+{
+ int ret = 0;
+ ret = kill (pid, SIGSTOP);
+ if (ret)
+ gf_log ("", GF_LOG_ERROR, GEOREP"failed to send SIGSTOP signal");
+ return ret;
+}
+
+int
+glusterd_send_sigcont (pid_t pid)
+{
+ int ret = 0;
+ ret = kill (pid, SIGCONT);
+ if (ret)
+ gf_log ("", GF_LOG_ERROR, GEOREP"failed to send SIGCONT signal");
+ return ret;
+}
+
+/*
+ * Log rotations flow is something like this:
+ * - Send SIGSTOP to process group (this will stop monitor/worker process
+ * and also the slave if it's local)
+ * - Rotate log file for monitor/worker
+ * - Rotate log file for slave if it's local
+ * - Send SIGCONT to the process group. Monitor wakes up, kills the worker
+ * (this is done in the SIGCONT handler), which results in the termination
+ * of the slave (local/remote). After returning from signal handler,
+ * monitor detects absence of worker and starts it again, which in-turn
+ * starts the slave.
+ */
+int
+glusterd_send_log_rotate_signal (pid_t pid, char *logfile1, char *logfile2)
+{
+ int ret = 0;
+ struct stat stbuf = {0,};
+ char rlogfile[PATH_MAX] = {0,};
+ time_t rottime = 0;
+
+ ret = glusterd_send_sigstop (-pid);
+ rottime = time (NULL);
+
+ snprintf (rlogfile, sizeof (rlogfile), "%s.%"PRIu64, logfile1,
+ (uint64_t) rottime);
+ ret = rename (logfile1, rlogfile);
+ if (ret)
+ gf_log ("", GF_LOG_ERROR, "rename failed for geo-rep log file");
+
+ snprintf (rlogfile, sizeof (rlogfile), "%s.%"PRIu64, logfile2,
+ (uint64_t) rottime);
+ ret = stat (logfile2, &stbuf);
+ if (ret) {
+ if (errno != ENOENT)
+ gf_log("", GF_LOG_ERROR, "stat failed for slave log"
+ " file: %s", logfile2);
+ else {
+ gf_log ("", GF_LOG_DEBUG, "Slave is not local, skipping rotation");
+ ret = 0;
+ }
+ goto out;
+ }
+
+ ret = rename (logfile2, rlogfile);
+ if (ret)
+ gf_log ("", GF_LOG_ERROR, "rename failed for geo-rep slave log file");
+
+ out:
+ ret = glusterd_send_sigcont (-pid);
+ return ret;
+}
+
+int
+glusterd_gsync_get_session_owner (char *master, char *slave, char *session_owner,
+ char *gl_workdir)
+{
+ char cmd[PATH_MAX] = {0,};
+
+ snprintf (cmd, PATH_MAX,
+ GSYNCD_PREFIX"/gsyncd -c %s/"GSYNC_CONF" :%s %s --config-get session-owner",
+ gl_workdir, master, slave);
+
+ return glusterd_query_extutil (session_owner, cmd);
+}
+
+int
+glusterd_gsync_get_slave_log_file (char *master, char *slave, char *log_file)
+{
+ int ret = -1;
+ char uuid_str[64] = {0,};
+ char cmd[PATH_MAX] = {0,};
+ glusterd_conf_t *priv = NULL;
+ char *gl_workdir = NULL;
+
+ GF_ASSERT(THIS);
+ GF_ASSERT(THIS->private);
+
+ priv = THIS->private;
+
+ GF_VALIDATE_OR_GOTO("gsyncd", master, out);
+ GF_VALIDATE_OR_GOTO("gsyncd", slave, out);
+
+ gl_workdir = priv->workdir;
+
+ /* get the session owner for the master-slave session */
+ ret = glusterd_gsync_get_session_owner (master, slave, uuid_str,
+ gl_workdir);
+
+ if (ret)
+ goto out;
+
+ /* get the log file for the slave */
+ snprintf (cmd, PATH_MAX,
+ GSYNCD_PREFIX"/gsyncd -c %s/"GSYNC_CONF" --session-owner=%s %s --config-get log-file",
+ gl_workdir, uuid_str, slave);
+ ret = glusterd_query_extutil (log_file, cmd);
+
+ out:
+ return ret;
+}
+static int
+glusterd_gsyncd_getlogfile (char *master, char *slave, char *log_file)
+{
+ int ret = -1;
+ glusterd_conf_t *priv = NULL;
+
+ GF_ASSERT (THIS);
+ GF_ASSERT (THIS->private);
+ priv = THIS->private;
+
+ GF_VALIDATE_OR_GOTO ("gsync", master, out);
+ GF_VALIDATE_OR_GOTO ("gsync", slave, out);
+
+ ret = glusterd_gsync_get_param_file (log_file, "log", master,
+ slave, priv->workdir);
+
+ if (ret == -1) {
+ ret = -2;
+ gf_log ("", GF_LOG_WARNING, "failed to gsyncd logfile");
+ }
+
+ out:
+ return ret;
+}
+
+int
+glusterd_get_pid_from_file (char *master, char *slave, pid_t *pid)
+{
+ int ret = -1;
+ int pfd = 0;
+ char pidfile[PATH_MAX] = {0,};
+ char buff[1024] = {0,};
+
+ pfd = gsyncd_getpidfile (master, slave, pidfile);
+
+ if (pfd == -2) {
+ gf_log ("", GF_LOG_ERROR, GEOREP" log-rotate validation "
+ " failed for %s & %s", master, slave);
+ goto out;
+ }
+
+ if (gsync_status_byfd (pfd) == -1) {
+ gf_log ("", GF_LOG_ERROR, "gsyncd b/w %s & %s is not"
+ " running", master, slave);
+ goto out;
+ }
+
+ ret = read (pfd, buff, 1024);
+ if (ret < 0) {
+ gf_log ("", GF_LOG_ERROR, GEOREP" cannot read pid from pid-file");
+ goto out;
+ }
+
+ close(pfd);
+
+ *pid = strtol (buff, NULL, 10);
+ ret = 0;
+
+ out:
+ return ret;
+}
+
+int
+glusterd_do_gsync_log_rotate (char *master, char *slave, uuid_t *uuid, char **op_errstr)
+{
+ int ret = 0;
+ glusterd_conf_t *priv = NULL;
+ pid_t pid = 0;
+ char log_file1[PATH_MAX] = {0,};
+ char log_file2[PATH_MAX] = {0,};
+
+ GF_ASSERT (THIS);
+ GF_ASSERT (THIS->private);
+
+ priv = THIS->private;
+
+ ret = glusterd_get_pid_from_file (master, slave, &pid);
+ if (ret)
+ goto out;
+
+ /* log file */
+ ret = glusterd_gsyncd_getlogfile (master, slave, log_file1);
+ if (ret)
+ goto out;
+
+ /* slave log file */
+ ret = glusterd_gsync_get_slave_log_file (master, slave, log_file2);
+ if (ret)
+ goto out;
+
+ ret = glusterd_send_log_rotate_signal (pid, log_file1, log_file2);
+
+ out:
+ if (ret && op_errstr)
+ *op_errstr = gf_strdup("Error rotating log file");
+ return ret;
+}
+
+int
+glusterd_do_gsync_log_rotation_mst_slv (glusterd_volinfo_t *volinfo, char *slave,
+ char **op_errstr)
+{
+ uuid_t uuid = {0, };
+ glusterd_conf_t *priv = NULL;
+ int ret = 0;
+ char errmsg[1024] = {0,};
+
+ GF_ASSERT (volinfo);
+ GF_ASSERT (slave);
+ GF_ASSERT (THIS);
+ GF_ASSERT (THIS->private);
+
+ priv = THIS->private;
+
+ ret = glusterd_gsync_get_uuid (slave, volinfo, uuid);
+ if ((ret == 0) && (uuid_compare (priv->uuid, uuid) != 0))
+ goto out;
+
+ if (ret) {
+ snprintf(errmsg, sizeof(errmsg), "geo-replication session b/w %s %s not active",
+ volinfo->volname, slave);
+ gf_log ("", GF_LOG_WARNING, errmsg);
+ if (op_errstr)
+ *op_errstr = gf_strdup(errmsg);
+ goto out;
+ }
+
+ ret = glusterd_do_gsync_log_rotate (volinfo->volname, slave, &uuid, op_errstr);
+
+ out:
+ gf_log ("", GF_LOG_DEBUG, "Returning with %d", ret);
+ return ret;
+}
+
+static void
+_iterate_log_rotate_mst_slv (dict_t *this, char *key, data_t *value, void *data)
+{
+ glusterd_gsync_status_temp_t *param = NULL;
+ char *slave = NULL;
+
+ param = (glusterd_gsync_status_temp_t *) data;
+
+ GF_ASSERT (param);
+ GF_ASSERT (param->volinfo);
+
+ slave = strchr (value->data, ':');
+ if (slave)
+ slave++;
+ else {
+ gf_log ("", GF_LOG_ERROR, "geo-replication log-rotate: slave (%s) "
+ "not comfirming to format", slave);
+ return;
+ }
+
+ (void) glusterd_do_gsync_log_rotation_mst_slv (param->volinfo, slave, NULL);
+}
+
+int
+glusterd_do_gsync_log_rotation_mst (glusterd_volinfo_t *volinfo)
+{
+ glusterd_gsync_status_temp_t param = {0, };
+
+ GF_ASSERT (volinfo);
+
+ param.volinfo = volinfo;
+ dict_foreach (volinfo->gsync_slaves, _iterate_log_rotate_mst_slv, &param);
+ return 0;
+}
+
+static int
+glusterd_rotate_gsync_all ()
+{
+ int32_t ret = 0;
+ glusterd_conf_t *priv = NULL;
+ glusterd_volinfo_t *volinfo = NULL;
+
+ GF_ASSERT (THIS);
+ priv = THIS->private;
+ GF_ASSERT (priv);
+
+ list_for_each_entry (volinfo, &priv->volumes, vol_list) {
+ ret = glusterd_do_gsync_log_rotation_mst (volinfo);
+ if (ret)
+ goto out;
+ }
+
+ out:
+ gf_log ("", GF_LOG_DEBUG, "Returning with %d", ret);
+ return ret;
+}
+
+static int
+glusterd_rotate_gsync_logs (dict_t *dict, char **op_errstr, dict_t *rsp_dict)
+{
+ char *slave = NULL;
+ char *volname = NULL;
+ char errmsg[1024] = {0,};
+ gf_boolean_t exists = _gf_false;
+ glusterd_volinfo_t *volinfo = NULL;
+ int ret = 0;
+
+ ret = dict_get_str (dict, "master", &volname);
+ if (ret < 0) {
+ ret = glusterd_rotate_gsync_all ();
+ goto out;
+ }
+
+ exists = glusterd_check_volume_exists (volname);
+ ret = glusterd_volinfo_find (volname, &volinfo);
+ if ((ret) || (!exists)) {
+ snprintf (errmsg, sizeof(errmsg), "Volume %s does not"
+ " exist", volname);
+ gf_log ("", GF_LOG_WARNING, errmsg);
+ *op_errstr = gf_strdup (errmsg);
+ ret = -1;
+ goto out;
+ }
+
+ ret = dict_get_str (dict, "slave", &slave);
+ if (ret < 0) {
+ ret = glusterd_do_gsync_log_rotation_mst (volinfo);
+ goto out;
+ }
+
+ ret = glusterd_do_gsync_log_rotation_mst_slv (volinfo, slave, op_errstr);
+
+ out:
+ return ret;
}
@@ -4412,7 +4767,11 @@ glusterd_op_gsync_set (dict_t *dict, char **op_errstr, dict_t *rsp_dict)
ret = glusterd_get_gsync_status (dict, op_errstr, resp_dict);
goto out;
+ }
+ if (type == GF_GSYNC_OPTION_TYPE_ROTATE) {
+ ret = glusterd_rotate_gsync_logs (dict, op_errstr, resp_dict);
+ goto out;
}
ret = dict_get_str (dict, "slave", &slave);
generated by cgit (git 2.34.1) at 2024-05-05 05:16:14 +0000