4 Copyright (C) Andrew Tridgell 2006
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, see <http://www.gnu.org/licenses/>.
20 #ifndef _CTDB_PROTOCOL_H
21 #define _CTDB_PROTOCOL_H
23 /* location of daemon socket, set at configure time */
25 #define CTDB_SOCKET SOCKPATH
27 #define CTDB_SOCKET "/var/run/ctdb/ctdbd.socket"
30 /* default ctdb port number */
31 #define CTDB_PORT 4379
33 /* we must align packets to ensure ctdb works on all architectures (eg. sparc) */
34 #define CTDB_DS_ALIGNMENT 8
37 #define CTDB_NULL_FUNC 0xFF000001
38 #define CTDB_FETCH_FUNC 0xFF000002
39 #define CTDB_FETCH_WITH_HEADER_FUNC 0xFF000003
48 #define CTDB_IMMEDIATE_MIGRATION 0x00000001
49 #define CTDB_CALL_FLAG_VACUUM_MIGRATION 0x00000002
50 #define CTDB_WANT_READONLY 0x00000004
55 structure passed to a ctdb call backend function
57 struct ctdb_call_info
{
58 TDB_DATA key
; /* record key */
59 struct ctdb_ltdb_header
*header
;
60 TDB_DATA record_data
; /* current data in the record */
61 TDB_DATA
*new_data
; /* optionally updated record data */
62 TDB_DATA
*call_data
; /* optionally passed from caller */
63 TDB_DATA
*reply_data
; /* optionally returned by function */
64 uint32_t status
; /* optional reply status - defaults to zero */
67 #define CTDB_ERR_INVALID 1
68 #define CTDB_ERR_NOMEM 2
73 #define CTDB_FLAG_TORTURE (1<<1)
76 a message handler ID meaning "give me all messages"
78 #define CTDB_SRVID_ALL (~(uint64_t)0)
83 #define CTDB_SRVID_RECOVERY 0xF100000000000000LL
86 a message handler ID meaning that the cluster has been reconfigured
88 #define CTDB_SRVID_RECONFIGURE 0xF200000000000000LL
91 a message handler ID meaning that an IP address has been released
93 #define CTDB_SRVID_RELEASE_IP 0xF300000000000000LL
96 a message handler ID meaning that an IP address has been taken
98 #define CTDB_SRVID_TAKE_IP 0xF301000000000000LL
101 a message ID to set the node flags in the recovery daemon
103 #define CTDB_SRVID_SET_NODE_FLAGS 0xF400000000000000LL
106 a message ID to ask the recovery daemon to update the expected node
107 assignment for a public ip
109 #define CTDB_SRVID_RECD_UPDATE_IP 0xF500000000000000LL
112 a message to tell the recovery daemon to fetch a set of records
114 #define CTDB_SRVID_VACUUM_FETCH 0xF700000000000000LL
117 * a message to tell recovery daemon to detach a database
119 #define CTDB_SRVID_DETACH_DATABASE 0xF701000000000000LL
121 a message to tell the recovery daemon to write a talloc memdump
124 #define CTDB_SRVID_MEM_DUMP 0xF800000000000000LL
126 /* A message id used to ask the recover daemon to send logs
128 #define CTDB_SRVID_GETLOG 0xF801000000000000LL
130 /* A message id used to ask the recover daemon to send logs
132 #define CTDB_SRVID_CLEARLOG 0xF802000000000000LL
135 a message ID to get the recovery daemon to push the node flags out
137 #define CTDB_SRVID_PUSH_NODE_FLAGS 0xF900000000000000LL
140 a message ID to get the recovery daemon to reload the nodes file
142 #define CTDB_SRVID_RELOAD_NODES 0xFA00000000000000LL
145 a message ID to get the recovery daemon to perform a takeover run
147 #define CTDB_SRVID_TAKEOVER_RUN 0xFB00000000000000LL
149 /* request recovery daemon to rebalance ips for a node.
150 input is uint32_t for the node id.
152 #define CTDB_SRVID_REBALANCE_NODE 0xFB01000000000000LL
154 /* A message handler ID to stop takeover runs from occurring */
155 #define CTDB_SRVID_DISABLE_TAKEOVER_RUNS 0xFB03000000000000LL
157 /* A message id to ask the recovery daemon to temporarily disable the
160 #define CTDB_SRVID_DISABLE_IP_CHECK 0xFC00000000000000LL
162 /* A dummy port used for sending back ipreallocate resposnes to the main
165 #define CTDB_SRVID_TAKEOVER_RUN_RESPONSE 0xFD00000000000000LL
167 /* A range of ports reserved for registering a PID (top 8 bits)
168 * All ports matching the 8 top bits are reserved for exclusive use by
169 * registering a SRVID that matches the process-id of the requesting process
171 #define CTDB_SRVID_PID_RANGE 0x0000000000000000LL
173 /* A range of ports reserved for samba (top 8 bits)
174 * All ports matching the 8 top bits are reserved for exclusive use by
177 #define CTDB_SRVID_SAMBA_NOTIFY 0xFE00000000000000LL
178 #define CTDB_SRVID_SAMBA_RANGE 0xFE00000000000000LL
180 /* A range of ports reserved for a CTDB NFS server (top 8 bits)
181 * All ports matching the 8 top bits are reserved for exclusive use by
184 #define CTDB_SRVID_NFSD_RANGE 0xEE00000000000000LL
186 /* A range of ports reserved for a CTDB ISCSI server (top 8 bits)
187 * All ports matching the 8 top bits are reserved for exclusive use by
190 #define CTDB_SRVID_ISCSID_RANGE 0xDE00000000000000LL
192 /* A range of ports reserved for testing (top 8 bits)
193 * All ports matching the 8 top bits are reserved for exclusive use by
196 #define CTDB_SRVID_TEST_RANGE 0xCE00000000000000LL
198 /* Range of ports reserved for traversals */
199 #define CTDB_SRVID_TRAVERSE_RANGE 0xBE00000000000000LL
201 /* used on the domain socket, send a pdu to the local daemon */
202 #define CTDB_CURRENT_NODE 0xF0000001
203 /* send a broadcast to all nodes in the cluster, active or not */
204 #define CTDB_BROADCAST_ALL 0xF0000002
205 /* send a broadcast to all nodes in the current vnn map */
206 #define CTDB_BROADCAST_VNNMAP 0xF0000003
207 /* send a broadcast to all connected nodes */
208 #define CTDB_BROADCAST_CONNECTED 0xF0000004
209 /* send a broadcast to selected connected nodes */
210 #define CTDB_MULTICAST 0xF0000005
212 /* the key used for transaction locking on persistent databases */
213 #define CTDB_TRANSACTION_LOCK_KEY "__transaction_lock__"
215 /* the key used to store persistent db sequence number */
216 #define CTDB_DB_SEQNUM_KEY "__db_sequence_number__"
218 #define MONITOR_SCRIPT_OK 0
219 #define MONITOR_SCRIPT_TIMEOUT 1
221 #define MAX_SCRIPT_NAME 31
222 #define MAX_SCRIPT_OUTPUT 511
223 struct ctdb_script_wire
{
224 char name
[MAX_SCRIPT_NAME
+1];
225 struct timeval start
;
226 struct timeval finished
;
228 char output
[MAX_SCRIPT_OUTPUT
+1];
231 struct ctdb_scripts_wire
{
232 uint32_t num_scripts
;
233 struct ctdb_script_wire scripts
[1];
236 /* different calls to event scripts. */
237 enum ctdb_eventscript_call
{
238 CTDB_EVENT_INIT
, /* CTDB starting up: no args */
239 CTDB_EVENT_SETUP
, /* CTDB starting up after transport is readdy: no args. */
240 CTDB_EVENT_STARTUP
, /* CTDB starting up after initial recovery: no args. */
241 CTDB_EVENT_START_RECOVERY
, /* CTDB recovery starting: no args. */
242 CTDB_EVENT_RECOVERED
, /* CTDB recovery finished: no args. */
243 CTDB_EVENT_TAKE_IP
, /* IP taken: interface, IP address, netmask bits. */
244 CTDB_EVENT_RELEASE_IP
, /* IP released: interface, IP address, netmask bits. */
245 CTDB_EVENT_STOPPED
, /* Deprecated, do not use. */
246 CTDB_EVENT_MONITOR
, /* Please check if service is healthy: no args. */
247 CTDB_EVENT_STATUS
, /* Deprecated, do not use. */
248 CTDB_EVENT_SHUTDOWN
, /* CTDB shutting down: no args. */
249 CTDB_EVENT_RELOAD
, /* Deprecated, do not use */
250 CTDB_EVENT_UPDATE_IP
, /* IP updating: old interface, new interface, IP address, netmask bits. */
251 CTDB_EVENT_IPREALLOCATED
, /* when a takeover_run() completes */
255 /* Mapping from enum to names. */
256 extern const char *ctdb_eventscript_call_names
[];
261 enum ctdb_operation
{
264 CTDB_REQ_DMASTER
= 2,
265 CTDB_REPLY_DMASTER
= 3,
266 CTDB_REPLY_ERROR
= 4,
267 CTDB_REQ_MESSAGE
= 5,
269 CTDB_REQ_CONTROL
= 7,
270 CTDB_REPLY_CONTROL
= 8,
271 CTDB_REQ_KEEPALIVE
= 9,
274 #define CTDB_MAGIC 0x43544442 /* CTDB */
275 #define CTDB_PROTOCOL 1
277 enum ctdb_controls
{CTDB_CONTROL_PROCESS_EXISTS
= 0,
278 CTDB_CONTROL_STATISTICS
= 1,
280 CTDB_CONTROL_PING
= 3,
281 CTDB_CONTROL_GETDBPATH
= 4,
282 CTDB_CONTROL_GETVNNMAP
= 5,
283 CTDB_CONTROL_SETVNNMAP
= 6,
284 CTDB_CONTROL_GET_DEBUG
= 7,
285 CTDB_CONTROL_SET_DEBUG
= 8,
286 CTDB_CONTROL_GET_DBMAP
= 9,
287 CTDB_CONTROL_GET_NODEMAPv4
= 10, /* obsolete */
288 CTDB_CONTROL_SET_DMASTER
= 11, /* obsolete */
290 CTDB_CONTROL_PULL_DB
= 13,
291 CTDB_CONTROL_PUSH_DB
= 14,
292 CTDB_CONTROL_GET_RECMODE
= 15,
293 CTDB_CONTROL_SET_RECMODE
= 16,
294 CTDB_CONTROL_STATISTICS_RESET
= 17,
295 CTDB_CONTROL_DB_ATTACH
= 18,
296 CTDB_CONTROL_SET_CALL
= 19,
297 CTDB_CONTROL_TRAVERSE_START
= 20,
298 CTDB_CONTROL_TRAVERSE_ALL
= 21,
299 CTDB_CONTROL_TRAVERSE_DATA
= 22,
300 CTDB_CONTROL_REGISTER_SRVID
= 23,
301 CTDB_CONTROL_DEREGISTER_SRVID
= 24,
302 CTDB_CONTROL_GET_DBNAME
= 25,
303 CTDB_CONTROL_ENABLE_SEQNUM
= 26,
304 CTDB_CONTROL_UPDATE_SEQNUM
= 27,
306 CTDB_CONTROL_DUMP_MEMORY
= 29,
307 CTDB_CONTROL_GET_PID
= 30,
308 CTDB_CONTROL_GET_RECMASTER
= 31,
309 CTDB_CONTROL_SET_RECMASTER
= 32,
310 CTDB_CONTROL_FREEZE
= 33,
311 CTDB_CONTROL_THAW
= 34,
312 CTDB_CONTROL_GET_PNN
= 35,
313 CTDB_CONTROL_SHUTDOWN
= 36,
314 CTDB_CONTROL_GET_MONMODE
= 37,
319 CTDB_CONTROL_TAKEOVER_IPv4
= 42, /* obsolete */
320 CTDB_CONTROL_RELEASE_IPv4
= 43, /* obsolete */
321 CTDB_CONTROL_TCP_CLIENT
= 44,
322 CTDB_CONTROL_TCP_ADD
= 45,
323 CTDB_CONTROL_TCP_REMOVE
= 46,
324 CTDB_CONTROL_STARTUP
= 47,
325 CTDB_CONTROL_SET_TUNABLE
= 48,
326 CTDB_CONTROL_GET_TUNABLE
= 49,
327 CTDB_CONTROL_LIST_TUNABLES
= 50,
328 CTDB_CONTROL_GET_PUBLIC_IPSv4
= 51, /* obsolete */
329 CTDB_CONTROL_MODIFY_FLAGS
= 52,
330 CTDB_CONTROL_GET_ALL_TUNABLES
= 53,
331 CTDB_CONTROL_KILL_TCP
= 54,
332 CTDB_CONTROL_GET_TCP_TICKLE_LIST
= 55,
333 CTDB_CONTROL_SET_TCP_TICKLE_LIST
= 56,
334 CTDB_CONTROL_REGISTER_SERVER_ID
= 57,
335 CTDB_CONTROL_UNREGISTER_SERVER_ID
= 58,
336 CTDB_CONTROL_CHECK_SERVER_ID
= 59,
337 CTDB_CONTROL_GET_SERVER_ID_LIST
= 60,
338 CTDB_CONTROL_DB_ATTACH_PERSISTENT
= 61,
339 CTDB_CONTROL_PERSISTENT_STORE
= 62, /* obsolete */
340 CTDB_CONTROL_UPDATE_RECORD
= 63,
341 CTDB_CONTROL_SEND_GRATIOUS_ARP
= 64,
342 CTDB_CONTROL_TRANSACTION_START
= 65,
343 CTDB_CONTROL_TRANSACTION_COMMIT
= 66,
344 CTDB_CONTROL_WIPE_DATABASE
= 67,
346 CTDB_CONTROL_UPTIME
= 69,
347 CTDB_CONTROL_START_RECOVERY
= 70,
348 CTDB_CONTROL_END_RECOVERY
= 71,
349 CTDB_CONTROL_RELOAD_NODES_FILE
= 72,
351 CTDB_CONTROL_TRY_DELETE_RECORDS
= 74,
352 CTDB_CONTROL_ENABLE_MONITOR
= 75,
353 CTDB_CONTROL_DISABLE_MONITOR
= 76,
354 CTDB_CONTROL_ADD_PUBLIC_IP
= 77,
355 CTDB_CONTROL_DEL_PUBLIC_IP
= 78,
356 CTDB_CONTROL_RUN_EVENTSCRIPTS
= 79,
357 CTDB_CONTROL_GET_CAPABILITIES
= 80,
358 CTDB_CONTROL_START_PERSISTENT_UPDATE
= 81,
359 CTDB_CONTROL_CANCEL_PERSISTENT_UPDATE
= 82,
360 CTDB_CONTROL_TRANS2_COMMIT
= 83, /* obsolete */
361 CTDB_CONTROL_TRANS2_FINISHED
= 84, /* obsolete */
362 CTDB_CONTROL_TRANS2_ERROR
= 85, /* obsolete */
363 CTDB_CONTROL_TRANS2_COMMIT_RETRY
= 86, /* obsolete */
364 CTDB_CONTROL_RECD_PING
= 87,
365 CTDB_CONTROL_RELEASE_IP
= 88,
366 CTDB_CONTROL_TAKEOVER_IP
= 89,
367 CTDB_CONTROL_GET_PUBLIC_IPS
= 90,
368 CTDB_CONTROL_GET_NODEMAP
= 91,
369 CTDB_CONTROL_GET_EVENT_SCRIPT_STATUS
= 96,
370 CTDB_CONTROL_TRAVERSE_KILL
= 97,
371 CTDB_CONTROL_RECD_RECLOCK_LATENCY
= 98,
372 CTDB_CONTROL_GET_RECLOCK_FILE
= 99,
373 CTDB_CONTROL_SET_RECLOCK_FILE
= 100,
374 CTDB_CONTROL_STOP_NODE
= 101,
375 CTDB_CONTROL_CONTINUE_NODE
= 102,
376 CTDB_CONTROL_SET_NATGWSTATE
= 103,
377 CTDB_CONTROL_SET_LMASTERROLE
= 104,
378 CTDB_CONTROL_SET_RECMASTERROLE
= 105,
379 CTDB_CONTROL_ENABLE_SCRIPT
= 107,
380 CTDB_CONTROL_DISABLE_SCRIPT
= 108,
381 CTDB_CONTROL_SET_BAN_STATE
= 109,
382 CTDB_CONTROL_GET_BAN_STATE
= 110,
383 CTDB_CONTROL_SET_DB_PRIORITY
= 111,
384 CTDB_CONTROL_GET_DB_PRIORITY
= 112,
385 CTDB_CONTROL_TRANSACTION_CANCEL
= 113,
386 CTDB_CONTROL_REGISTER_NOTIFY
= 114,
387 CTDB_CONTROL_DEREGISTER_NOTIFY
= 115,
388 CTDB_CONTROL_TRANS2_ACTIVE
= 116, /* obsolete */
389 CTDB_CONTROL_GET_LOG
= 117, /* obsolete */
390 CTDB_CONTROL_CLEAR_LOG
= 118, /* obsolete */
391 CTDB_CONTROL_TRANS3_COMMIT
= 119,
392 CTDB_CONTROL_GET_DB_SEQNUM
= 120,
393 CTDB_CONTROL_DB_SET_HEALTHY
= 121,
394 CTDB_CONTROL_DB_GET_HEALTH
= 122,
395 CTDB_CONTROL_GET_PUBLIC_IP_INFO
= 123,
396 CTDB_CONTROL_GET_IFACES
= 124,
397 CTDB_CONTROL_SET_IFACE_LINK_STATE
= 125,
398 CTDB_CONTROL_TCP_ADD_DELAYED_UPDATE
= 126,
399 CTDB_CONTROL_GET_STAT_HISTORY
= 127,
400 CTDB_CONTROL_SCHEDULE_FOR_DELETION
= 128,
401 CTDB_CONTROL_SET_DB_READONLY
= 129,
402 CTDB_CONTROL_CHECK_SRVIDS
= 130,
403 CTDB_CONTROL_TRAVERSE_START_EXT
= 131,
404 CTDB_CONTROL_GET_DB_STATISTICS
= 132,
405 CTDB_CONTROL_SET_DB_STICKY
= 133,
406 CTDB_CONTROL_RELOAD_PUBLIC_IPS
= 134,
407 CTDB_CONTROL_TRAVERSE_ALL_EXT
= 135,
408 CTDB_CONTROL_RECEIVE_RECORDS
= 136,
409 CTDB_CONTROL_IPREALLOCATED
= 137,
410 CTDB_CONTROL_GET_RUNSTATE
= 138,
411 CTDB_CONTROL_DB_DETACH
= 139,
417 struct ctdb_req_header
{
420 uint32_t ctdb_version
;
428 struct ctdb_req_call
{
429 struct ctdb_req_header hdr
;
435 uint32_t calldatalen
;
436 uint8_t data
[1]; /* key[] followed by calldata[] */
439 struct ctdb_reply_call
{
440 struct ctdb_req_header hdr
;
446 struct ctdb_reply_error
{
447 struct ctdb_req_header hdr
;
453 struct ctdb_req_dmaster
{
454 struct ctdb_req_header hdr
;
463 struct ctdb_reply_dmaster
{
464 struct ctdb_req_header hdr
;
472 struct ctdb_req_message
{
473 struct ctdb_req_header hdr
;
479 struct ctdb_req_getdbpath
{
480 struct ctdb_req_header hdr
;
484 struct ctdb_reply_getdbpath
{
485 struct ctdb_req_header hdr
;
490 struct ctdb_req_control
{
491 struct ctdb_req_header hdr
;
496 #define CTDB_CTRL_FLAG_NOREPLY 1
497 #define CTDB_CTRL_FLAG_OPCODE_SPECIFIC 0xFFFF0000
503 struct ctdb_reply_control
{
504 struct ctdb_req_header hdr
;
511 struct ctdb_req_keepalive
{
512 struct ctdb_req_header hdr
;
517 the extended header for records in the ltdb
519 struct ctdb_ltdb_header
{
523 #define CTDB_REC_FLAG_DEFAULT 0x00000000
524 #define CTDB_REC_FLAG_MIGRATED_WITH_DATA 0x00010000
525 #define CTDB_REC_FLAG_VACUUM_MIGRATED 0x00020000
526 #define CTDB_REC_FLAG_AUTOMATIC 0x00040000
527 #define CTDB_REC_RO_HAVE_DELEGATIONS 0x01000000
528 #define CTDB_REC_RO_HAVE_READONLY 0x02000000
529 #define CTDB_REC_RO_REVOKING_READONLY 0x04000000
530 #define CTDB_REC_RO_REVOKE_COMPLETE 0x08000000
531 #define CTDB_REC_RO_FLAGS (CTDB_REC_RO_HAVE_DELEGATIONS|\
532 CTDB_REC_RO_HAVE_READONLY|\
533 CTDB_REC_RO_REVOKING_READONLY|\
534 CTDB_REC_RO_REVOKE_COMPLETE)
540 definitions for different socket structures
542 typedef struct sockaddr_in ctdb_addr_in
;
543 typedef struct sockaddr_in6 ctdb_addr_in6
;
551 A structure describing a single node, its flags and its address
553 struct ctdb_node_and_flags
{
561 Structure used for a nodemap.
562 The nodemap is the structure containing a list of all nodes
563 known to the cluster and their associated flags.
565 struct ctdb_node_map
{
567 struct ctdb_node_and_flags nodes
[1];
573 #define NODE_FLAGS_DISCONNECTED 0x00000001 /* node isn't connected */
574 #define NODE_FLAGS_UNHEALTHY 0x00000002 /* monitoring says node is unhealthy */
575 #define NODE_FLAGS_PERMANENTLY_DISABLED 0x00000004 /* administrator has disabled node */
576 #define NODE_FLAGS_BANNED 0x00000008 /* recovery daemon has banned the node */
577 #define NODE_FLAGS_DELETED 0x00000010 /* this node has been deleted */
578 #define NODE_FLAGS_STOPPED 0x00000020 /* this node has been stopped */
579 #define NODE_FLAGS_DISABLED (NODE_FLAGS_UNHEALTHY|NODE_FLAGS_PERMANENTLY_DISABLED)
580 #define NODE_FLAGS_INACTIVE (NODE_FLAGS_DELETED|NODE_FLAGS_DISCONNECTED|NODE_FLAGS_BANNED|NODE_FLAGS_STOPPED)
585 #define CTDB_CAP_RECMASTER 0x00000001
586 #define CTDB_CAP_LMASTER 0x00000002
587 /* This capability is set if CTDB_LVS_PUBLIC_IP is set */
588 #define CTDB_CAP_LVS 0x00000004
589 /* This capability is set if NATGW is enabled */
590 #define CTDB_CAP_NATGW 0x00000008
593 struct ctdb_public_ip
{
598 struct ctdb_all_public_ips
{
600 struct ctdb_public_ip ips
[1];
604 struct latency_counter
{
612 structure used to pass record data between the child and parent
614 struct ctdb_rec_data
{
622 struct ctdb_traverse_start
{
628 struct ctdb_traverse_start_ext
{
632 bool withemptyrecords
;
636 ctdb statistics information
638 #define MAX_COUNT_BUCKETS 16
639 #define MAX_HOT_KEYS 10
641 struct ctdb_statistics
{
642 uint32_t num_clients
;
645 uint32_t client_packets_sent
;
646 uint32_t client_packets_recv
;
647 uint32_t node_packets_sent
;
648 uint32_t node_packets_recv
;
649 uint32_t keepalive_packets_sent
;
650 uint32_t keepalive_packets_recv
;
654 uint32_t req_dmaster
;
655 uint32_t reply_dmaster
;
656 uint32_t reply_error
;
657 uint32_t req_message
;
658 uint32_t req_control
;
659 uint32_t reply_control
;
663 uint32_t req_message
;
664 uint32_t req_control
;
672 struct latency_counter ctdbd
;
673 struct latency_counter recd
;
677 uint32_t num_current
;
678 uint32_t num_pending
;
680 struct latency_counter latency
;
681 uint32_t buckets
[MAX_COUNT_BUCKETS
];
683 uint32_t total_calls
;
684 uint32_t pending_calls
;
685 uint32_t childwrite_calls
;
686 uint32_t pending_childwrite_calls
;
687 uint32_t memory_used
;
688 uint32_t __last_counter
; /* hack for control_statistics_all */
689 uint32_t max_hop_count
;
690 uint32_t hop_count_bucket
[MAX_COUNT_BUCKETS
];
691 struct latency_counter call_latency
;
692 struct latency_counter childwrite_latency
;
693 uint32_t num_recoveries
;
694 struct timeval statistics_start_time
;
695 struct timeval statistics_current_time
;
696 uint32_t total_ro_delegations
;
697 uint32_t total_ro_revokes
;
701 * wire format for statistics history
703 struct ctdb_statistics_wire
{
705 struct ctdb_statistics stats
[1];
711 struct ctdb_db_statistics
{
714 uint32_t num_current
;
715 uint32_t num_pending
;
717 struct latency_counter latency
;
718 uint32_t buckets
[MAX_COUNT_BUCKETS
];
720 uint32_t db_ro_delegations
;
721 uint32_t db_ro_revokes
;
722 uint32_t hop_count_bucket
[MAX_COUNT_BUCKETS
];
723 uint32_t num_hot_keys
;
727 } hot_keys
[MAX_HOT_KEYS
];
728 char hot_keys_wire
[1];
732 * wire format for interface list
735 #define CTDB_IFACE_SIZE IFNAMSIZ
737 #define CTDB_IFACE_SIZE 16
740 struct ctdb_iface_info
{
741 char name
[CTDB_IFACE_SIZE
+2];
746 struct ctdb_ifaces_list
{
748 struct ctdb_iface_info ifaces
[1];
751 #define INVALID_GENERATION 1
752 /* table that contains the mapping between a hash value and lmaster
754 struct ctdb_vnn_map
{
761 a wire representation of the vnn map
763 struct ctdb_vnn_map_wire
{