*/
#include "includes.h"
-#include "lib/events/events.h"
+#include "lib/tevent/tevent.h"
#include "system/filesys.h"
#include "system/time.h"
#include "system/network.h"
#include "system/wait.h"
#include "popt.h"
#include "cmdline.h"
-#include "../include/ctdb.h"
+#include "../include/ctdb_client.h"
#include "../include/ctdb_private.h"
#include "db_wrap.h"
#include "dlinklist.h"
TALLOC_CTX *ip_reallocate_ctx;
struct ip_reallocate_list *reallocate_callers;
TALLOC_CTX *ip_check_disable_ctx;
+ struct ctdb_control_get_ifaces *ifaces;
};
#define CONTROL_TIMEOUT() timeval_current_ofs(ctdb->tunable.recover_timeout, 0)
static void async_getcap_callback(struct ctdb_context *ctdb, uint32_t node_pnn, int32_t res, TDB_DATA outdata, void *callback_data)
{
if ( (outdata.dsize != sizeof(uint32_t)) || (outdata.dptr == NULL) ) {
- DEBUG(DEBUG_ERR, (__location__ " Invalid lenght/pointer for getcap callback : %u %p\n", (unsigned)outdata.dsize, outdata.dptr));
+ DEBUG(DEBUG_ERR, (__location__ " Invalid length/pointer for getcap callback : %u %p\n", (unsigned)outdata.dsize, outdata.dptr));
return;
}
if (node_pnn < ctdb->num_nodes) {
/*
wait for a given number of seconds
*/
-static void ctdb_wait_timeout(struct ctdb_context *ctdb, uint32_t secs)
+static void ctdb_wait_timeout(struct ctdb_context *ctdb, double secs)
{
uint32_t timed_out = 0;
- event_add_timed(ctdb->ev, ctdb, timeval_current_ofs(secs, 0), ctdb_wait_handler, &timed_out);
+ time_t usecs = (secs - (time_t)secs) * 1000000;
+ event_add_timed(ctdb->ev, ctdb, timeval_current_ofs(secs, usecs), ctdb_wait_handler, &timed_out);
while (!timed_out) {
event_loop_once(ctdb->ev);
}
{
struct ctdb_recoverd *rec = talloc_get_type(p, struct ctdb_recoverd);
rec->election_timeout = NULL;
+ fast_start = false;
DEBUG(DEBUG_WARNING,(__location__ " Election timed out\n"));
}
unsigned tdb_flags;
/* open up the temporary recovery database */
- name = talloc_asprintf(mem_ctx, "%s/recdb.tdb", ctdb->db_directory);
+ name = talloc_asprintf(mem_ctx, "%s/recdb.tdb.%u",
+ ctdb->db_directory_state,
+ ctdb->pnn);
if (name == NULL) {
return NULL;
}
unlink(name);
tdb_flags = TDB_NOLOCK;
- if (!ctdb->do_setsched) {
+ if (ctdb->valgrinding) {
tdb_flags |= TDB_NOMMAP;
}
tdb_flags |= TDB_DISALLOW_NESTING;
ctdb_load_nodes_file(ctdb);
}
-
+static int ctdb_reload_remote_public_ips(struct ctdb_context *ctdb,
+ struct ctdb_recoverd *rec,
+ struct ctdb_node_map *nodemap,
+ uint32_t *culprit)
+{
+ int j;
+ int ret;
+
+ if (ctdb->num_nodes != nodemap->num) {
+ DEBUG(DEBUG_ERR, (__location__ " ctdb->num_nodes (%d) != nodemap->num (%d) invalid param\n",
+ ctdb->num_nodes, nodemap->num));
+ if (culprit) {
+ *culprit = ctdb->pnn;
+ }
+ return -1;
+ }
+
+ for (j=0; j<nodemap->num; j++) {
+ /* release any existing data */
+ if (ctdb->nodes[j]->known_public_ips) {
+ talloc_free(ctdb->nodes[j]->known_public_ips);
+ ctdb->nodes[j]->known_public_ips = NULL;
+ }
+ if (ctdb->nodes[j]->available_public_ips) {
+ talloc_free(ctdb->nodes[j]->available_public_ips);
+ ctdb->nodes[j]->available_public_ips = NULL;
+ }
+
+ if (nodemap->nodes[j].flags & NODE_FLAGS_INACTIVE) {
+ continue;
+ }
+
+ /* grab a new shiny list of public ips from the node */
+ ret = ctdb_ctrl_get_public_ips_flags(ctdb,
+ CONTROL_TIMEOUT(),
+ ctdb->nodes[j]->pnn,
+ ctdb->nodes,
+ 0,
+ &ctdb->nodes[j]->known_public_ips);
+ if (ret != 0) {
+ DEBUG(DEBUG_ERR,("Failed to read known public ips from node : %u\n",
+ ctdb->nodes[j]->pnn));
+ if (culprit) {
+ *culprit = ctdb->nodes[j]->pnn;
+ }
+ return -1;
+ }
+
+ if (rec->ip_check_disable_ctx == NULL) {
+ if (verify_remote_ip_allocation(ctdb, ctdb->nodes[j]->known_public_ips)) {
+ DEBUG(DEBUG_ERR,("Node %d has inconsistent public ip allocation and needs update.\n", ctdb->nodes[j]->pnn));
+ rec->need_takeover_run = true;
+ }
+ }
+
+ /* grab a new shiny list of public ips from the node */
+ ret = ctdb_ctrl_get_public_ips_flags(ctdb,
+ CONTROL_TIMEOUT(),
+ ctdb->nodes[j]->pnn,
+ ctdb->nodes,
+ CTDB_PUBLIC_IP_FLAGS_ONLY_AVAILABLE,
+ &ctdb->nodes[j]->available_public_ips);
+ if (ret != 0) {
+ DEBUG(DEBUG_ERR,("Failed to read available public ips from node : %u\n",
+ ctdb->nodes[j]->pnn));
+ if (culprit) {
+ *culprit = ctdb->nodes[j]->pnn;
+ }
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+/* when we start a recovery, make sure all nodes use the same reclock file
+ setting
+*/
+static int sync_recovery_lock_file_across_cluster(struct ctdb_recoverd *rec)
+{
+ struct ctdb_context *ctdb = rec->ctdb;
+ TALLOC_CTX *tmp_ctx = talloc_new(NULL);
+ TDB_DATA data;
+ uint32_t *nodes;
+
+ if (ctdb->recovery_lock_file == NULL) {
+ data.dptr = NULL;
+ data.dsize = 0;
+ } else {
+ data.dsize = strlen(ctdb->recovery_lock_file) + 1;
+ data.dptr = (uint8_t *)ctdb->recovery_lock_file;
+ }
+
+ nodes = list_of_active_nodes(ctdb, rec->nodemap, tmp_ctx, true);
+ if (ctdb_client_async_control(ctdb, CTDB_CONTROL_SET_RECLOCK_FILE,
+ nodes, 0,
+ CONTROL_TIMEOUT(),
+ false, data,
+ NULL, NULL,
+ rec) != 0) {
+ DEBUG(DEBUG_ERR, (__location__ " Failed to sync reclock file settings\n"));
+ talloc_free(tmp_ctx);
+ return -1;
+ }
+
+ talloc_free(tmp_ctx);
+ return 0;
+}
+
+
/*
we are the recmaster, and recovery is needed - start a recovery run
*/
TDB_DATA data;
uint32_t *nodes;
struct timeval start_time;
+ uint32_t culprit = (uint32_t)-1;
DEBUG(DEBUG_NOTICE, (__location__ " Starting do_recovery\n"));
DEBUG(DEBUG_ERR,("Taking out recovery lock from recovery daemon\n"));
start_time = timeval_current();
if (!ctdb_recovery_lock(ctdb, true)) {
- ctdb_set_culprit(rec, pnn);
- DEBUG(DEBUG_ERR,("Unable to get recovery lock - aborting recovery\n"));
+ DEBUG(DEBUG_ERR,("Unable to get recovery lock - aborting recovery "
+ "and ban ourself for %u seconds\n",
+ ctdb->tunable.recovery_ban_period));
+ ctdb_ban_node(rec, pnn, ctdb->tunable.recovery_ban_period);
return -1;
}
ctdb_ctrl_report_recd_lock_latency(ctdb, CONTROL_TIMEOUT(), timeval_elapsed(&start_time));
- DEBUG(DEBUG_ERR,("Recovery lock taken successfully by recovery daemon\n"));
+ DEBUG(DEBUG_NOTICE,("Recovery lock taken successfully by recovery daemon\n"));
}
DEBUG(DEBUG_NOTICE, (__location__ " Recovery initiated due to problem with node %u\n", rec->last_culprit_node));
DEBUG(DEBUG_NOTICE, (__location__ " Recovery - updated db priority for all databases\n"));
+ /* update all other nodes to use the same setting for reclock files
+ as the local recovery master.
+ */
+ sync_recovery_lock_file_across_cluster(rec);
+
/* set recovery mode to active on all nodes */
ret = set_recovery_mode(ctdb, rec, nodemap, CTDB_RECOVERY_ACTIVE);
if (ret != 0) {
return -1;
}
+ /*
+ update all nodes to have the same flags that we have
+ */
+ for (i=0;i<nodemap->num;i++) {
+ if (nodemap->nodes[i].flags & NODE_FLAGS_DISCONNECTED) {
+ continue;
+ }
+
+ ret = update_flags_on_all_nodes(ctdb, nodemap, i, nodemap->nodes[i].flags);
+ if (ret != 0) {
+ DEBUG(DEBUG_ERR, (__location__ " Unable to update flags on all nodes for node %d\n", i));
+ return -1;
+ }
+ }
+
+ DEBUG(DEBUG_NOTICE, (__location__ " Recovery - updated flags\n"));
+
/* pick a new generation number */
generation = new_generation();
/*
tell nodes to takeover their public IPs
*/
+ ret = ctdb_reload_remote_public_ips(ctdb, rec, nodemap, &culprit);
+ if (ret != 0) {
+ DEBUG(DEBUG_ERR,("Failed to read public ips from remote node %d\n",
+ culprit));
+ return -1;
+ }
rec->need_takeover_run = false;
ret = ctdb_takeover_run(ctdb, nodemap);
if (ret != 0) {
/* send a message to all clients telling them that the cluster
has been reconfigured */
- ctdb_send_message(ctdb, CTDB_BROADCAST_CONNECTED, CTDB_SRVID_RECONFIGURE, tdb_null);
+ ctdb_client_send_message(ctdb, CTDB_BROADCAST_CONNECTED, CTDB_SRVID_RECONFIGURE, tdb_null);
DEBUG(DEBUG_NOTICE, (__location__ " Recovery complete\n"));
/* send an election message to all active nodes */
DEBUG(DEBUG_INFO,(__location__ " Send election request to all active nodes\n"));
- ctdb_send_message(ctdb, CTDB_BROADCAST_ALL, srvid, election_data);
+ ctdb_client_send_message(ctdb, CTDB_BROADCAST_ALL, srvid, election_data);
/* A new node that is already frozen has entered the cluster.
DEBUG(DEBUG_ERR, ("recovery master memory dump\n"));
- ret = ctdb_send_message(ctdb, rd->pnn, rd->srvid, *dump);
+ ret = ctdb_client_send_message(ctdb, rd->pnn, rd->srvid, *dump);
if (ret != 0) {
DEBUG(DEBUG_ERR,("Failed to send rd memdump reply message\n"));
talloc_free(tmp_ctx);
rec->ip_check_disable_ctx = NULL;
}
+
+static void recd_update_ip_handler(struct ctdb_context *ctdb, uint64_t srvid,
+ TDB_DATA data, void *private_data)
+{
+ struct ctdb_recoverd *rec = talloc_get_type(private_data, struct ctdb_recoverd);
+ struct ctdb_public_ip *ip;
+
+ if (rec->recmaster != rec->ctdb->pnn) {
+ DEBUG(DEBUG_INFO,("Not recmaster, ignore update ip message\n"));
+ return;
+ }
+
+ if (data.dsize != sizeof(struct ctdb_public_ip)) {
+ DEBUG(DEBUG_ERR,(__location__ " Incorrect size of recd update ip message. Was %zd but expected %zd bytes\n", data.dsize, sizeof(struct ctdb_public_ip)));
+ return;
+ }
+
+ ip = (struct ctdb_public_ip *)data.dptr;
+
+ update_ip_assignment_tree(rec->ctdb, ip);
+}
+
+
static void disable_ip_check_handler(struct ctdb_context *ctdb, uint64_t srvid,
TDB_DATA data, void *private_data)
{
TDB_DATA result;
int32_t ret;
struct ip_reallocate_list *callers;
+ uint32_t culprit;
DEBUG(DEBUG_INFO, ("recovery master forced ip reallocation\n"));
- ret = ctdb_takeover_run(ctdb, rec->nodemap);
+
+ /* update the list of public ips that a node can handle for
+ all connected nodes
+ */
+ ret = ctdb_reload_remote_public_ips(ctdb, rec, rec->nodemap, &culprit);
+ if (ret != 0) {
+ DEBUG(DEBUG_ERR,("Failed to read public ips from remote node %d\n",
+ culprit));
+ rec->need_takeover_run = true;
+ }
+ if (ret == 0) {
+ ret = ctdb_takeover_run(ctdb, rec->nodemap);
+ if (ret != 0) {
+ DEBUG(DEBUG_ERR,("Failed to read public ips from remote node %d\n",
+ culprit));
+ rec->need_takeover_run = true;
+ }
+ }
+
result.dsize = sizeof(int32_t);
result.dptr = (uint8_t *)&ret;
DEBUG(DEBUG_INFO,("Sending ip reallocate reply message to "
"%u:%llu\n", (unsigned)callers->rd->pnn,
(unsigned long long)callers->rd->srvid));
- ret = ctdb_send_message(ctdb, callers->rd->pnn, callers->rd->srvid, result);
+ ret = ctdb_client_send_message(ctdb, callers->rd->pnn, callers->rd->srvid, result);
if (ret != 0) {
DEBUG(DEBUG_ERR,("Failed to send ip reallocate reply "
"message to %u:%llu\n",
/* we got an election packet - update the timeout for the election */
talloc_free(rec->election_timeout);
rec->election_timeout = event_add_timed(ctdb->ev, ctdb,
+ fast_start ?
+ timeval_current_ofs(0, 500000) :
timeval_current_ofs(ctdb->tunable.election_timeout, 0),
ctdb_election_timeout, rec);
talloc_free(rec->election_timeout);
rec->election_timeout = event_add_timed(ctdb->ev, ctdb,
+ fast_start ?
+ timeval_current_ofs(0, 500000) :
timeval_current_ofs(ctdb->tunable.election_timeout, 0),
ctdb_election_timeout, rec);
}
-/* called to check that the allocation of public ip addresses is ok.
+/* called to check that the local allocation of public ip addresses is ok.
*/
-static int verify_ip_allocation(struct ctdb_context *ctdb, struct ctdb_recoverd *rec, uint32_t pnn)
+static int verify_local_ip_allocation(struct ctdb_context *ctdb, struct ctdb_recoverd *rec, uint32_t pnn)
{
TALLOC_CTX *mem_ctx = talloc_new(NULL);
+ struct ctdb_control_get_ifaces *ifaces = NULL;
struct ctdb_all_public_ips *ips = NULL;
struct ctdb_uptime *uptime1 = NULL;
struct ctdb_uptime *uptime2 = NULL;
int ret, j;
+ bool need_iface_check = false;
+ bool need_takeover_run = false;
ret = ctdb_ctrl_uptime(ctdb, mem_ctx, CONTROL_TIMEOUT(),
CTDB_CURRENT_NODE, &uptime1);
return -1;
}
+
+ /* read the interfaces from the local node */
+ ret = ctdb_ctrl_get_ifaces(ctdb, CONTROL_TIMEOUT(), CTDB_CURRENT_NODE, mem_ctx, &ifaces);
+ if (ret != 0) {
+ DEBUG(DEBUG_ERR, ("Unable to get interfaces from local node %u\n", pnn));
+ talloc_free(mem_ctx);
+ return -1;
+ }
+
+ if (!rec->ifaces) {
+ need_iface_check = true;
+ } else if (rec->ifaces->num != ifaces->num) {
+ need_iface_check = true;
+ } else if (memcmp(rec->ifaces, ifaces, talloc_get_size(ifaces)) != 0) {
+ need_iface_check = true;
+ }
+
+ if (need_iface_check) {
+ DEBUG(DEBUG_NOTICE, ("The interfaces status has changed on "
+ "local node %u - force takeover run\n",
+ pnn));
+ need_takeover_run = true;
+ }
+
/* read the ip allocation from the local node */
ret = ctdb_ctrl_get_public_ips(ctdb, CONTROL_TIMEOUT(), CTDB_CURRENT_NODE, mem_ctx, &ips);
if (ret != 0) {
return 0;
}
+ talloc_free(rec->ifaces);
+ rec->ifaces = talloc_steal(rec, ifaces);
+
/* verify that we have the ip addresses we should have
and we dont have ones we shouldnt have.
if we find an inconsistency we set recmode to
for (j=0; j<ips->num; j++) {
if (ips->ips[j].pnn == pnn) {
if (!ctdb_sys_have_ip(&ips->ips[j].addr)) {
- struct takeover_run_reply rd;
- TDB_DATA data;
-
DEBUG(DEBUG_CRIT,("Public address '%s' is missing and we should serve this ip\n",
ctdb_addr_to_str(&ips->ips[j].addr)));
-
- rd.pnn = ctdb->pnn;
- rd.srvid = 0;
- data.dptr = (uint8_t *)&rd;
- data.dsize = sizeof(rd);
-
- ret = ctdb_send_message(ctdb, rec->recmaster, CTDB_SRVID_TAKEOVER_RUN, data);
- if (ret != 0) {
- DEBUG(DEBUG_ERR,(__location__ " Failed to send ipreallocate to recmaster :%d\n", (int)rec->recmaster));
- }
+ need_takeover_run = true;
}
} else {
if (ctdb_sys_have_ip(&ips->ips[j].addr)) {
- struct takeover_run_reply rd;
- TDB_DATA data;
-
DEBUG(DEBUG_CRIT,("We are still serving a public address '%s' that we should not be serving.\n",
ctdb_addr_to_str(&ips->ips[j].addr)));
-
- rd.pnn = ctdb->pnn;
- rd.srvid = 0;
- data.dptr = (uint8_t *)&rd;
- data.dsize = sizeof(rd);
-
- ret = ctdb_send_message(ctdb, rec->recmaster, CTDB_SRVID_TAKEOVER_RUN, data);
- if (ret != 0) {
- DEBUG(DEBUG_ERR,(__location__ " Failed to send ipreallocate to recmaster :%d\n", (int)rec->recmaster));
- }
+ need_takeover_run = true;
}
}
}
+ if (need_takeover_run) {
+ struct takeover_run_reply rd;
+ TDB_DATA data;
+
+ DEBUG(DEBUG_CRIT,("Trigger takeoverrun\n"));
+
+ rd.pnn = ctdb->pnn;
+ rd.srvid = 0;
+ data.dptr = (uint8_t *)&rd;
+ data.dsize = sizeof(rd);
+
+ ret = ctdb_client_send_message(ctdb, rec->recmaster, CTDB_SRVID_TAKEOVER_RUN, data);
+ if (ret != 0) {
+ DEBUG(DEBUG_ERR,(__location__ " Failed to send ipreallocate to recmaster :%d\n", (int)rec->recmaster));
+ }
+ }
talloc_free(mem_ctx);
return 0;
}
close(state->fd[0]);
state->fd[0] = -1;
+ debug_extra = talloc_asprintf(NULL, "recovery-lock:");
if (pread(ctdb->recovery_lock_fd, &cc, 1, 0) == -1) {
DEBUG(DEBUG_CRIT,("failed read from recovery_lock_fd - %s\n", strerror(errno)));
cc = RECLOCK_FAILED;
}
state->fde = event_add_fd(ctdb->ev, state, state->fd[0],
- EVENT_FD_READ|EVENT_FD_AUTOCLOSE,
+ EVENT_FD_READ,
reclock_child_handler,
(void *)state);
talloc_free(state);
return -1;
}
+ tevent_fd_set_auto_close(state->fde);
while (state->status == RECLOCK_CHECKING) {
event_loop_once(ctdb->ev);
talloc_free(tmp_ctx);
return 0;
}
-
-/*
- the main monitoring loop
- */
-static void monitor_cluster(struct ctdb_context *ctdb)
+
+static void main_loop(struct ctdb_context *ctdb, struct ctdb_recoverd *rec,
+ TALLOC_CTX *mem_ctx)
{
uint32_t pnn;
- TALLOC_CTX *mem_ctx=NULL;
struct ctdb_node_map *nodemap=NULL;
struct ctdb_node_map *recmaster_nodemap=NULL;
struct ctdb_node_map **remote_nodemaps=NULL;
struct ctdb_vnn_map *remote_vnnmap=NULL;
int32_t debug_level;
int i, j, ret;
- struct ctdb_recoverd *rec;
-
- DEBUG(DEBUG_NOTICE,("monitor_cluster starting\n"));
-
- rec = talloc_zero(ctdb, struct ctdb_recoverd);
- CTDB_NO_MEMORY_FATAL(ctdb, rec);
-
- rec->ctdb = ctdb;
-
- rec->priority_time = timeval_current();
-
- /* register a message port for sending memory dumps */
- ctdb_set_message_handler(ctdb, CTDB_SRVID_MEM_DUMP, mem_dump_handler, rec);
-
- /* register a message port for recovery elections */
- ctdb_set_message_handler(ctdb, CTDB_SRVID_RECOVERY, election_handler, rec);
- /* when nodes are disabled/enabled */
- ctdb_set_message_handler(ctdb, CTDB_SRVID_SET_NODE_FLAGS, monitor_handler, rec);
-
- /* when we are asked to puch out a flag change */
- ctdb_set_message_handler(ctdb, CTDB_SRVID_PUSH_NODE_FLAGS, push_flags_handler, rec);
-
- /* register a message port for vacuum fetch */
- ctdb_set_message_handler(ctdb, CTDB_SRVID_VACUUM_FETCH, vacuum_fetch_handler, rec);
-
- /* register a message port for reloadnodes */
- ctdb_set_message_handler(ctdb, CTDB_SRVID_RELOAD_NODES, reload_nodes_handler, rec);
-
- /* register a message port for performing a takeover run */
- ctdb_set_message_handler(ctdb, CTDB_SRVID_TAKEOVER_RUN, ip_reallocate_handler, rec);
- /* register a message port for disabling the ip check for a short while */
- ctdb_set_message_handler(ctdb, CTDB_SRVID_DISABLE_IP_CHECK, disable_ip_check_handler, rec);
-
-again:
- if (mem_ctx) {
- talloc_free(mem_ctx);
- mem_ctx = NULL;
- }
- mem_ctx = talloc_new(ctdb);
- if (!mem_ctx) {
- DEBUG(DEBUG_CRIT,(__location__ " Failed to create temporary context\n"));
- exit(-1);
- }
-
- /* we only check for recovery once every second */
- ctdb_wait_timeout(ctdb, ctdb->tunable.recover_interval);
/* verify that the main daemon is still running */
if (kill(ctdb->ctdbd_pid, 0) != 0) {
if (rec->election_timeout) {
/* an election is in progress */
- goto again;
+ return;
}
/* read the debug level from the parent and update locally */
ret = ctdb_ctrl_get_debuglevel(ctdb, CTDB_CURRENT_NODE, &debug_level);
if (ret !=0) {
DEBUG(DEBUG_ERR, (__location__ " Failed to read debuglevel from parent\n"));
- goto again;
+ return;
}
LogLevel = debug_level;
ret = ctdb_ctrl_get_all_tunables(ctdb, CONTROL_TIMEOUT(), CTDB_CURRENT_NODE, &ctdb->tunable);
if (ret != 0) {
DEBUG(DEBUG_ERR,("Failed to get tunables - retrying\n"));
- goto again;
+ return;
}
/* get the current recovery lock file from the server */
if (update_recovery_lock_file(ctdb) != 0) {
DEBUG(DEBUG_ERR,("Failed to update the recovery lock file\n"));
- goto again;
+ return;
}
/* Make sure that if recovery lock verification becomes disabled when
pnn = ctdb_ctrl_getpnn(ctdb, CONTROL_TIMEOUT(), CTDB_CURRENT_NODE);
if (pnn == (uint32_t)-1) {
DEBUG(DEBUG_ERR,("Failed to get local pnn - retrying\n"));
- goto again;
+ return;
}
/* get the vnnmap */
ret = ctdb_ctrl_getvnnmap(ctdb, CONTROL_TIMEOUT(), pnn, mem_ctx, &vnnmap);
if (ret != 0) {
DEBUG(DEBUG_ERR, (__location__ " Unable to get vnnmap from node %u\n", pnn));
- goto again;
+ return;
}
ret = ctdb_ctrl_getnodemap(ctdb, CONTROL_TIMEOUT(), pnn, rec, &rec->nodemap);
if (ret != 0) {
DEBUG(DEBUG_ERR, (__location__ " Unable to get nodemap from node %u\n", pnn));
- goto again;
+ return;
}
nodemap = rec->nodemap;
ret = ctdb_ctrl_getrecmaster(ctdb, mem_ctx, CONTROL_TIMEOUT(), pnn, &rec->recmaster);
if (ret != 0) {
DEBUG(DEBUG_ERR, (__location__ " Unable to get recmaster from node %u\n", pnn));
- goto again;
+ return;
}
/* if we are not the recmaster we can safely ignore any ip reallocate requests */
rec->reallocate_callers = NULL;
}
}
- /* if there are takeovers requested, perform it and notify the waiters */
- if (rec->reallocate_callers) {
- process_ipreallocate_requests(ctdb, rec);
- }
if (rec->recmaster == (uint32_t)-1) {
DEBUG(DEBUG_NOTICE,(__location__ " Initial recovery master set - forcing election\n"));
force_election(rec, pnn, nodemap);
- goto again;
+ return;
}
ret = ctdb_ctrl_freeze_priority(ctdb, CONTROL_TIMEOUT(), CTDB_CURRENT_NODE, 1);
if (ret != 0) {
DEBUG(DEBUG_ERR,(__location__ " Failed to freeze node due to node being STOPPED\n"));
- goto again;
+ return;
}
ret = ctdb_ctrl_setrecmode(ctdb, CONTROL_TIMEOUT(), CTDB_CURRENT_NODE, CTDB_RECOVERY_ACTIVE);
if (ret != 0) {
DEBUG(DEBUG_ERR,(__location__ " Failed to activate recovery mode due to node being stopped\n"));
- goto again;
+ return;
}
- goto again;
+ return;
}
}
/* If the local node is stopped, verify we are not the recmaster
if ((nodemap->nodes[pnn].flags & NODE_FLAGS_STOPPED) && (rec->recmaster == pnn)) {
DEBUG(DEBUG_ERR,("Local node is STOPPED. Yielding recmaster role\n"));
force_election(rec, pnn, nodemap);
- goto again;
+ return;
}
/* check that we (recovery daemon) and the local ctdb daemon
if (j == nodemap->num) {
DEBUG(DEBUG_ERR, ("Recmaster node %u not in list. Force reelection\n", rec->recmaster));
force_election(rec, pnn, nodemap);
- goto again;
+ return;
}
/* if recovery master is disconnected we must elect a new recmaster */
if (nodemap->nodes[j].flags & NODE_FLAGS_DISCONNECTED) {
DEBUG(DEBUG_NOTICE, ("Recmaster node %u is disconnected. Force reelection\n", nodemap->nodes[j].pnn));
force_election(rec, pnn, nodemap);
- goto again;
+ return;
}
/* grap the nodemap from the recovery master to check if it is banned */
if (ret != 0) {
DEBUG(DEBUG_ERR, (__location__ " Unable to get nodemap from recovery master %u\n",
nodemap->nodes[j].pnn));
- goto again;
+ return;
}
if (recmaster_nodemap->nodes[j].flags & NODE_FLAGS_INACTIVE) {
DEBUG(DEBUG_NOTICE, ("Recmaster node %u no longer available. Force reelection\n", nodemap->nodes[j].pnn));
force_election(rec, pnn, nodemap);
- goto again;
+ return;
}
*/
if (ctdb->do_checkpublicip) {
if (rec->ip_check_disable_ctx == NULL) {
- if (verify_ip_allocation(ctdb, rec, pnn) != 0) {
+ if (verify_local_ip_allocation(ctdb, rec, pnn) != 0) {
DEBUG(DEBUG_ERR, (__location__ " Public IPs were inconsistent.\n"));
}
}
if recovery is needed
*/
if (pnn != rec->recmaster) {
- goto again;
+ return;
}
if (ret == MONITOR_ELECTION_NEEDED) {
DEBUG(DEBUG_NOTICE,("update_local_flags() called for a re-election.\n"));
force_election(rec, pnn, nodemap);
- goto again;
+ return;
}
if (ret != MONITOR_OK) {
DEBUG(DEBUG_ERR,("Unable to update local flags\n"));
- goto again;
+ return;
}
- /* update the list of public ips that a node can handle for
- all connected nodes
- */
if (ctdb->num_nodes != nodemap->num) {
DEBUG(DEBUG_ERR, (__location__ " ctdb->num_nodes (%d) != nodemap->num (%d) reloading nodes file\n", ctdb->num_nodes, nodemap->num));
reload_nodes_file(ctdb);
- goto again;
- }
- for (j=0; j<nodemap->num; j++) {
- /* release any existing data */
- if (ctdb->nodes[j]->public_ips) {
- talloc_free(ctdb->nodes[j]->public_ips);
- ctdb->nodes[j]->public_ips = NULL;
- }
-
- if (nodemap->nodes[j].flags & NODE_FLAGS_INACTIVE) {
- continue;
- }
-
- /* grab a new shiny list of public ips from the node */
- if (ctdb_ctrl_get_public_ips(ctdb, CONTROL_TIMEOUT(),
- ctdb->nodes[j]->pnn,
- ctdb->nodes,
- &ctdb->nodes[j]->public_ips)) {
- DEBUG(DEBUG_ERR,("Failed to read public ips from node : %u\n",
- ctdb->nodes[j]->pnn));
- goto again;
- }
+ return;
}
-
/* verify that all active nodes agree that we are the recmaster */
switch (verify_recmaster(rec, nodemap, pnn)) {
case MONITOR_RECOVERY_NEEDED:
/* can not happen */
- goto again;
+ return;
case MONITOR_ELECTION_NEEDED:
force_election(rec, pnn, nodemap);
- goto again;
+ return;
case MONITOR_OK:
break;
case MONITOR_FAILED:
- goto again;
+ return;
}
if (rec->need_recovery) {
/* a previous recovery didn't finish */
do_recovery(rec, mem_ctx, pnn, nodemap, vnnmap);
- goto again;
+ return;
}
/* verify that all active nodes are in normal mode
switch (verify_recmode(ctdb, nodemap)) {
case MONITOR_RECOVERY_NEEDED:
do_recovery(rec, mem_ctx, pnn, nodemap, vnnmap);
- goto again;
+ return;
case MONITOR_FAILED:
- goto again;
+ return;
case MONITOR_ELECTION_NEEDED:
/* can not happen */
case MONITOR_OK:
DEBUG(DEBUG_ERR,("Failed check_recovery_lock. Force a recovery\n"));
ctdb_set_culprit(rec, ctdb->pnn);
do_recovery(rec, mem_ctx, pnn, nodemap, vnnmap);
- goto again;
+ return;
}
}
+ /* if there are takeovers requested, perform it and notify the waiters */
+ if (rec->reallocate_callers) {
+ process_ipreallocate_requests(ctdb, rec);
+ }
+
/* get the nodemap for all active remote nodes
*/
remote_nodemaps = talloc_array(mem_ctx, struct ctdb_node_map *, nodemap->num);
if (remote_nodemaps == NULL) {
DEBUG(DEBUG_ERR, (__location__ " failed to allocate remote nodemap array\n"));
- goto again;
+ return;
}
for(i=0; i<nodemap->num; i++) {
remote_nodemaps[i] = NULL;
}
if (get_remote_nodemaps(ctdb, mem_ctx, nodemap, remote_nodemaps) != 0) {
DEBUG(DEBUG_ERR,(__location__ " Failed to read remote nodemaps\n"));
- goto again;
+ return;
}
/* verify that all other nodes have the same nodemap as we have
DEBUG(DEBUG_ERR,(__location__ " Did not get a remote nodemap for node %d, restarting monitoring\n", j));
ctdb_set_culprit(rec, j);
- goto again;
+ return;
}
/* if the nodes disagree on how many nodes there are
nodemap->nodes[j].pnn, remote_nodemaps[j]->num, nodemap->num));
ctdb_set_culprit(rec, nodemap->nodes[j].pnn);
do_recovery(rec, mem_ctx, pnn, nodemap, vnnmap);
- goto again;
+ return;
}
/* if the nodes disagree on which nodes exist and are
ctdb_set_culprit(rec, nodemap->nodes[j].pnn);
do_recovery(rec, mem_ctx, pnn, nodemap,
vnnmap);
- goto again;
+ return;
}
}
ctdb_set_culprit(rec, nodemap->nodes[j].pnn);
do_recovery(rec, mem_ctx, pnn, nodemap,
vnnmap);
- goto again;
+ return;
} else {
DEBUG(DEBUG_ERR,("Use flags 0x%02x from local recmaster node for cluster update of node %d flags\n", nodemap->nodes[i].flags, i));
update_flags_on_all_nodes(ctdb, nodemap, nodemap->nodes[i].pnn, nodemap->nodes[i].flags);
ctdb_set_culprit(rec, nodemap->nodes[j].pnn);
do_recovery(rec, mem_ctx, pnn, nodemap,
vnnmap);
- goto again;
+ return;
}
}
}
vnnmap->size, rec->num_active));
ctdb_set_culprit(rec, ctdb->pnn);
do_recovery(rec, mem_ctx, pnn, nodemap, vnnmap);
- goto again;
+ return;
}
/* verify that all active nodes in the nodemap also exist in
nodemap->nodes[j].pnn));
ctdb_set_culprit(rec, nodemap->nodes[j].pnn);
do_recovery(rec, mem_ctx, pnn, nodemap, vnnmap);
- goto again;
+ return;
}
}
if (ret != 0) {
DEBUG(DEBUG_ERR, (__location__ " Unable to get vnnmap from remote node %u\n",
nodemap->nodes[j].pnn));
- goto again;
+ return;
}
/* verify the vnnmap generation is the same */
nodemap->nodes[j].pnn, remote_vnnmap->generation, vnnmap->generation));
ctdb_set_culprit(rec, nodemap->nodes[j].pnn);
do_recovery(rec, mem_ctx, pnn, nodemap, vnnmap);
- goto again;
+ return;
}
/* verify the vnnmap size is the same */
nodemap->nodes[j].pnn, remote_vnnmap->size, vnnmap->size));
ctdb_set_culprit(rec, nodemap->nodes[j].pnn);
do_recovery(rec, mem_ctx, pnn, nodemap, vnnmap);
- goto again;
+ return;
}
/* verify the vnnmap is the same */
ctdb_set_culprit(rec, nodemap->nodes[j].pnn);
do_recovery(rec, mem_ctx, pnn, nodemap,
vnnmap);
- goto again;
+ return;
}
}
}
/* we might need to change who has what IP assigned */
if (rec->need_takeover_run) {
+ uint32_t culprit = (uint32_t)-1;
+
rec->need_takeover_run = false;
+ /* update the list of public ips that a node can handle for
+ all connected nodes
+ */
+ ret = ctdb_reload_remote_public_ips(ctdb, rec, nodemap, &culprit);
+ if (ret != 0) {
+ DEBUG(DEBUG_ERR,("Failed to read public ips from remote node %d\n",
+ culprit));
+ ctdb_set_culprit(rec, culprit);
+ do_recovery(rec, mem_ctx, pnn, nodemap, vnnmap);
+ return;
+ }
+
/* execute the "startrecovery" event script on all nodes */
ret = run_startrecovery_eventscript(rec, nodemap);
if (ret!=0) {
DEBUG(DEBUG_ERR, (__location__ " Unable to run the 'startrecovery' event on cluster\n"));
ctdb_set_culprit(rec, ctdb->pnn);
do_recovery(rec, mem_ctx, pnn, nodemap, vnnmap);
+ return;
}
ret = ctdb_takeover_run(ctdb, nodemap);
DEBUG(DEBUG_ERR, (__location__ " Unable to setup public takeover addresses - starting recovery\n"));
ctdb_set_culprit(rec, ctdb->pnn);
do_recovery(rec, mem_ctx, pnn, nodemap, vnnmap);
+ return;
}
/* execute the "recovered" event script on all nodes */
}
#endif
}
+}
+/*
+ the main monitoring loop
+ */
+static void monitor_cluster(struct ctdb_context *ctdb)
+{
+ struct ctdb_recoverd *rec;
+
+ DEBUG(DEBUG_NOTICE,("monitor_cluster starting\n"));
+
+ rec = talloc_zero(ctdb, struct ctdb_recoverd);
+ CTDB_NO_MEMORY_FATAL(ctdb, rec);
+
+ rec->ctdb = ctdb;
- goto again;
+ rec->priority_time = timeval_current();
+ /* register a message port for sending memory dumps */
+ ctdb_client_set_message_handler(ctdb, CTDB_SRVID_MEM_DUMP, mem_dump_handler, rec);
+
+ /* register a message port for recovery elections */
+ ctdb_client_set_message_handler(ctdb, CTDB_SRVID_RECOVERY, election_handler, rec);
+
+ /* when nodes are disabled/enabled */
+ ctdb_client_set_message_handler(ctdb, CTDB_SRVID_SET_NODE_FLAGS, monitor_handler, rec);
+
+ /* when we are asked to puch out a flag change */
+ ctdb_client_set_message_handler(ctdb, CTDB_SRVID_PUSH_NODE_FLAGS, push_flags_handler, rec);
+
+ /* register a message port for vacuum fetch */
+ ctdb_client_set_message_handler(ctdb, CTDB_SRVID_VACUUM_FETCH, vacuum_fetch_handler, rec);
+
+ /* register a message port for reloadnodes */
+ ctdb_client_set_message_handler(ctdb, CTDB_SRVID_RELOAD_NODES, reload_nodes_handler, rec);
+
+ /* register a message port for performing a takeover run */
+ ctdb_client_set_message_handler(ctdb, CTDB_SRVID_TAKEOVER_RUN, ip_reallocate_handler, rec);
+
+ /* register a message port for disabling the ip check for a short while */
+ ctdb_client_set_message_handler(ctdb, CTDB_SRVID_DISABLE_IP_CHECK, disable_ip_check_handler, rec);
+
+ /* register a message port for updating the recovery daemons node assignment for an ip */
+ ctdb_client_set_message_handler(ctdb, CTDB_SRVID_RECD_UPDATE_IP, recd_update_ip_handler, rec);
+
+ for (;;) {
+ TALLOC_CTX *mem_ctx = talloc_new(ctdb);
+ struct timeval start;
+ double elapsed;
+
+ if (!mem_ctx) {
+ DEBUG(DEBUG_CRIT,(__location__
+ " Failed to create temp context\n"));
+ exit(-1);
+ }
+
+ start = timeval_current();
+ main_loop(ctdb, rec, mem_ctx);
+ talloc_free(mem_ctx);
+
+ /* we only check for recovery once every second */
+ elapsed = timeval_elapsed(&start);
+ if (elapsed < ctdb->tunable.recover_interval) {
+ ctdb_wait_timeout(ctdb, ctdb->tunable.recover_interval
+ - elapsed);
+ }
+ }
}
/*
{
int fd[2];
struct signal_event *se;
+ struct tevent_fd *fde;
if (pipe(fd) != 0) {
return -1;
srandom(getpid() ^ time(NULL));
- if (switch_from_server_to_client(ctdb) != 0) {
+ if (switch_from_server_to_client(ctdb, "recoverd") != 0) {
DEBUG(DEBUG_CRIT, (__location__ "ERROR: failed to switch recovery daemon into client mode. shutting down.\n"));
exit(1);
}
- DEBUG(DEBUG_NOTICE, (__location__ " Created PIPE FD:%d to recovery daemon\n", fd[0]));
+ DEBUG(DEBUG_DEBUG, (__location__ " Created PIPE FD:%d to recovery daemon\n", fd[0]));
- event_add_fd(ctdb->ev, ctdb, fd[0], EVENT_FD_READ|EVENT_FD_AUTOCLOSE,
+ fde = event_add_fd(ctdb->ev, ctdb, fd[0], EVENT_FD_READ,
ctdb_recoverd_parent, &fd[0]);
+ tevent_fd_set_auto_close(fde);
/* set up a handler to pick up sigchld */
se = event_add_signal(ctdb->ev, ctdb,
git.samba.org / metze / ctdb / wip.git / blobdiff