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038c946e80
samba-mirror/ctdb/include/ctdb_protocol.h
Ronnie Sahlberg 038c946e80 add max hop count buckets to see how bad hopcounts are 
(This used to be ctdb commit 7d3931298e6477d92f43652c3006b0c426cb1307)
2012-03-20 11:20:53 +11:00

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/*
ctdb database library
Copyright (C) Andrew Tridgell 2006
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _CTDB_PROTOCOL_H
#define _CTDB_PROTOCOL_H
/* location of daemon socket */
#define CTDB_PATH "/tmp/ctdb.socket"
/* default ctdb port number */
#define CTDB_PORT 4379
/* we must align packets to ensure ctdb works on all architectures (eg. sparc) */
#define CTDB_DS_ALIGNMENT 8
#define CTDB_NULL_FUNC 0xFF000001
#define CTDB_FETCH_FUNC 0xFF000002
#define CTDB_FETCH_WITH_HEADER_FUNC 0xFF000003
struct ctdb_call {
int call_id;
TDB_DATA key;
TDB_DATA call_data;
TDB_DATA reply_data;
uint32_t status;
#define CTDB_IMMEDIATE_MIGRATION 0x00000001
#define CTDB_CALL_FLAG_VACUUM_MIGRATION 0x00000002
#define CTDB_WANT_READONLY 0x00000004
uint32_t flags;
};
/*
structure passed to a ctdb call backend function
*/
struct ctdb_call_info {
TDB_DATA key; /* record key */
struct ctdb_ltdb_header *header;
TDB_DATA record_data; /* current data in the record */
TDB_DATA *new_data; /* optionally updated record data */
TDB_DATA *call_data; /* optionally passed from caller */
TDB_DATA *reply_data; /* optionally returned by function */
uint32_t status; /* optional reply status - defaults to zero */
};
#define CTDB_ERR_INVALID 1
#define CTDB_ERR_NOMEM 2
/*
ctdb flags
*/
#define CTDB_FLAG_TORTURE (1<<1)
/*
a message handler ID meaning "give me all messages"
*/
#define CTDB_SRVID_ALL (~(uint64_t)0)
/*
srvid type : RECOVERY
*/
#define CTDB_SRVID_RECOVERY 0xF100000000000000LL
/*
a message handler ID meaning that the cluster has been reconfigured
*/
#define CTDB_SRVID_RECONFIGURE 0xF200000000000000LL
/*
a message handler ID meaning that an IP address has been released
*/
#define CTDB_SRVID_RELEASE_IP 0xF300000000000000LL
/*
a message handler ID meaning that an IP address has been taken
*/
#define CTDB_SRVID_TAKE_IP 0xF301000000000000LL
/*
a message ID to set the node flags in the recovery daemon
*/
#define CTDB_SRVID_SET_NODE_FLAGS 0xF400000000000000LL
/*
a message ID to ask the recovery daemon to update the expected node
assignment for a public ip
*/
#define CTDB_SRVID_RECD_UPDATE_IP 0xF500000000000000LL
/*
a message to tell the recovery daemon to fetch a set of records
*/
#define CTDB_SRVID_VACUUM_FETCH 0xF700000000000000LL
/*
a message to tell the recovery daemon to write a talloc memdump
to the log
*/
#define CTDB_SRVID_MEM_DUMP 0xF800000000000000LL
/*
a message ID to get the recovery daemon to push the node flags out
*/
#define CTDB_SRVID_PUSH_NODE_FLAGS 0xF900000000000000LL
/*
a message ID to get the recovery daemon to reload the nodes file
*/
#define CTDB_SRVID_RELOAD_NODES 0xFA00000000000000LL
/*
a message ID to get the recovery daemon to perform a takeover run
*/
#define CTDB_SRVID_TAKEOVER_RUN 0xFB00000000000000LL
/* request recovery daemon to rebalance ips for a node.
input is uint32_t for the node id.
*/
#define CTDB_SRVID_REBALANCE_NODE 0xFB01000000000000LL
/* A message id to ask the recovery daemon to temporarily disable the
public ip checks
*/
#define CTDB_SRVID_DISABLE_IP_CHECK 0xFC00000000000000LL
/* A dummy port used for sending back ipreallocate resposnes to the main
daemon
*/
#define CTDB_SRVID_TAKEOVER_RUN_RESPONSE 0xFD00000000000000LL
/* A range of ports reserved for registering a PID (top 8 bits)
* All ports matching the 8 top bits are reserved for exclusive use by
* registering a SRVID that matches the process-id of the requesting process
*/
#define CTDB_SRVID_PID_RANGE 0x0000000000000000LL
/* A range of ports reserved for samba (top 8 bits)
* All ports matching the 8 top bits are reserved for exclusive use by
* CIFS server
*/
#define CTDB_SRVID_SAMBA_NOTIFY 0xFE00000000000000LL
#define CTDB_SRVID_SAMBA_RANGE 0xFE00000000000000LL
/* A range of ports reserved for a CTDB NFS server (top 8 bits)
* All ports matching the 8 top bits are reserved for exclusive use by
* NFS server
*/
#define CTDB_SRVID_NFSD_RANGE 0xEE00000000000000LL
/* A range of ports reserved for a CTDB ISCSI server (top 8 bits)
* All ports matching the 8 top bits are reserved for exclusive use by
* ISCSI server
*/
#define CTDB_SRVID_ISCSID_RANGE 0xDE00000000000000LL
/* A range of ports reserved for testing (top 8 bits)
* All ports matching the 8 top bits are reserved for exclusive use by
* test applications
*/
#define CTDB_SRVID_TEST_RANGE 0xCE00000000000000LL
/* Range of ports reserved for traversals */
#define CTDB_SRVID_TRAVERSE_RANGE 0xBE00000000000000LL
/* used on the domain socket, send a pdu to the local daemon */
#define CTDB_CURRENT_NODE 0xF0000001
/* send a broadcast to all nodes in the cluster, active or not */
#define CTDB_BROADCAST_ALL 0xF0000002
/* send a broadcast to all nodes in the current vnn map */
#define CTDB_BROADCAST_VNNMAP 0xF0000003
/* send a broadcast to all connected nodes */
#define CTDB_BROADCAST_CONNECTED 0xF0000004
/* send a broadcast to selected connected nodes */
#define CTDB_MULTICAST 0xF0000005
/* the key used for transaction locking on persistent databases */
#define CTDB_TRANSACTION_LOCK_KEY "__transaction_lock__"
/* the key used to store persistent db sequence number */
#define CTDB_DB_SEQNUM_KEY "__db_sequence_number__"
#define MONITOR_SCRIPT_OK 0
#define MONITOR_SCRIPT_TIMEOUT 1
#define MAX_SCRIPT_NAME 31
#define MAX_SCRIPT_OUTPUT 511
struct ctdb_script_wire {
char name[MAX_SCRIPT_NAME+1];
struct timeval start;
struct timeval finished;
int32_t status;
char output[MAX_SCRIPT_OUTPUT+1];
};
struct ctdb_scripts_wire {
uint32_t num_scripts;
struct ctdb_script_wire scripts[1];
};
/* different calls to event scripts. */
enum ctdb_eventscript_call {
CTDB_EVENT_INIT, /* CTDB starting up: no args */
CTDB_EVENT_SETUP, /* CTDB starting up after transport is readdy: no args. */
CTDB_EVENT_STARTUP, /* CTDB starting up after initial recovery: no args. */
CTDB_EVENT_START_RECOVERY, /* CTDB recovery starting: no args. */
CTDB_EVENT_RECOVERED, /* CTDB recovery finished: no args. */
CTDB_EVENT_TAKE_IP, /* IP taken: interface, IP address, netmask bits. */
CTDB_EVENT_RELEASE_IP, /* IP released: interface, IP address, netmask bits. */
CTDB_EVENT_STOPPED, /* This node is stopped: no args. */
CTDB_EVENT_MONITOR, /* Please check if service is healthy: no args. */
CTDB_EVENT_STATUS, /* Report service status: no args. */
CTDB_EVENT_SHUTDOWN, /* CTDB shutting down: no args. */
CTDB_EVENT_RELOAD, /* magic */
CTDB_EVENT_UPDATE_IP, /* IP updating: old interface, new interface, IP address, netmask bits. */
CTDB_EVENT_IPREALLOCATED, /* when a takeover_run() completes */
CTDB_EVENT_MAX
};
/* Mapping from enum to names. */
extern const char *ctdb_eventscript_call_names[];
/*
operation IDs
*/
enum ctdb_operation {
CTDB_REQ_CALL = 0,
CTDB_REPLY_CALL = 1,
CTDB_REQ_DMASTER = 2,
CTDB_REPLY_DMASTER = 3,
CTDB_REPLY_ERROR = 4,
CTDB_REQ_MESSAGE = 5,
/* #6 removed */
CTDB_REQ_CONTROL = 7,
CTDB_REPLY_CONTROL = 8,
CTDB_REQ_KEEPALIVE = 9,
};
#define CTDB_MAGIC 0x43544442 /* CTDB */
#define CTDB_VERSION 1
enum ctdb_controls {CTDB_CONTROL_PROCESS_EXISTS = 0,
CTDB_CONTROL_STATISTICS = 1,
/* #2 removed */
CTDB_CONTROL_PING = 3,
CTDB_CONTROL_GETDBPATH = 4,
CTDB_CONTROL_GETVNNMAP = 5,
CTDB_CONTROL_SETVNNMAP = 6,
CTDB_CONTROL_GET_DEBUG = 7,
CTDB_CONTROL_SET_DEBUG = 8,
CTDB_CONTROL_GET_DBMAP = 9,
CTDB_CONTROL_GET_NODEMAPv4 = 10, /* obsolete */
CTDB_CONTROL_SET_DMASTER = 11,
/* #12 removed */
CTDB_CONTROL_PULL_DB = 13,
CTDB_CONTROL_PUSH_DB = 14,
CTDB_CONTROL_GET_RECMODE = 15,
CTDB_CONTROL_SET_RECMODE = 16,
CTDB_CONTROL_STATISTICS_RESET = 17,
CTDB_CONTROL_DB_ATTACH = 18,
CTDB_CONTROL_SET_CALL = 19,
CTDB_CONTROL_TRAVERSE_START = 20,
CTDB_CONTROL_TRAVERSE_ALL = 21,
CTDB_CONTROL_TRAVERSE_DATA = 22,
CTDB_CONTROL_REGISTER_SRVID = 23,
CTDB_CONTROL_DEREGISTER_SRVID = 24,
CTDB_CONTROL_GET_DBNAME = 25,
CTDB_CONTROL_ENABLE_SEQNUM = 26,
CTDB_CONTROL_UPDATE_SEQNUM = 27,
/* #28 removed */
CTDB_CONTROL_DUMP_MEMORY = 29,
CTDB_CONTROL_GET_PID = 30,
CTDB_CONTROL_GET_RECMASTER = 31,
CTDB_CONTROL_SET_RECMASTER = 32,
CTDB_CONTROL_FREEZE = 33,
CTDB_CONTROL_THAW = 34,
CTDB_CONTROL_GET_PNN = 35,
CTDB_CONTROL_SHUTDOWN = 36,
CTDB_CONTROL_GET_MONMODE = 37,
/* #38 removed */
/* #39 removed */
/* #40 removed */
/* #41 removed */
CTDB_CONTROL_TAKEOVER_IPv4 = 42, /* obsolete */
CTDB_CONTROL_RELEASE_IPv4 = 43, /* obsolete */
CTDB_CONTROL_TCP_CLIENT = 44,
CTDB_CONTROL_TCP_ADD = 45,
CTDB_CONTROL_TCP_REMOVE = 46,
CTDB_CONTROL_STARTUP = 47,
CTDB_CONTROL_SET_TUNABLE = 48,
CTDB_CONTROL_GET_TUNABLE = 49,
CTDB_CONTROL_LIST_TUNABLES = 50,
CTDB_CONTROL_GET_PUBLIC_IPSv4 = 51, /* obsolete */
CTDB_CONTROL_MODIFY_FLAGS = 52,
CTDB_CONTROL_GET_ALL_TUNABLES = 53,
CTDB_CONTROL_KILL_TCP = 54,
CTDB_CONTROL_GET_TCP_TICKLE_LIST = 55,
CTDB_CONTROL_SET_TCP_TICKLE_LIST = 56,
CTDB_CONTROL_REGISTER_SERVER_ID = 57,
CTDB_CONTROL_UNREGISTER_SERVER_ID = 58,
CTDB_CONTROL_CHECK_SERVER_ID = 59,
CTDB_CONTROL_GET_SERVER_ID_LIST = 60,
CTDB_CONTROL_DB_ATTACH_PERSISTENT = 61,
CTDB_CONTROL_PERSISTENT_STORE = 62,
CTDB_CONTROL_UPDATE_RECORD = 63,
CTDB_CONTROL_SEND_GRATIOUS_ARP = 64,
CTDB_CONTROL_TRANSACTION_START = 65,
CTDB_CONTROL_TRANSACTION_COMMIT = 66,
CTDB_CONTROL_WIPE_DATABASE = 67,
/* #68 removed */
CTDB_CONTROL_UPTIME = 69,
CTDB_CONTROL_START_RECOVERY = 70,
CTDB_CONTROL_END_RECOVERY = 71,
CTDB_CONTROL_RELOAD_NODES_FILE = 72,
/* #73 removed */
CTDB_CONTROL_TRY_DELETE_RECORDS = 74,
CTDB_CONTROL_ENABLE_MONITOR = 75,
CTDB_CONTROL_DISABLE_MONITOR = 76,
CTDB_CONTROL_ADD_PUBLIC_IP = 77,
CTDB_CONTROL_DEL_PUBLIC_IP = 78,
CTDB_CONTROL_RUN_EVENTSCRIPTS = 79,
CTDB_CONTROL_GET_CAPABILITIES = 80,
CTDB_CONTROL_START_PERSISTENT_UPDATE = 81,
CTDB_CONTROL_CANCEL_PERSISTENT_UPDATE= 82,
CTDB_CONTROL_TRANS2_COMMIT = 83,
CTDB_CONTROL_TRANS2_FINISHED = 84,
CTDB_CONTROL_TRANS2_ERROR = 85,
CTDB_CONTROL_TRANS2_COMMIT_RETRY = 86,
CTDB_CONTROL_RECD_PING = 87,
CTDB_CONTROL_RELEASE_IP = 88,
CTDB_CONTROL_TAKEOVER_IP = 89,
CTDB_CONTROL_GET_PUBLIC_IPS = 90,
CTDB_CONTROL_GET_NODEMAP = 91,
CTDB_CONTROL_GET_EVENT_SCRIPT_STATUS = 96,
CTDB_CONTROL_TRAVERSE_KILL = 97,
CTDB_CONTROL_RECD_RECLOCK_LATENCY = 98,
CTDB_CONTROL_GET_RECLOCK_FILE = 99,
CTDB_CONTROL_SET_RECLOCK_FILE = 100,
CTDB_CONTROL_STOP_NODE = 101,
CTDB_CONTROL_CONTINUE_NODE = 102,
CTDB_CONTROL_SET_NATGWSTATE = 103,
CTDB_CONTROL_SET_LMASTERROLE = 104,
CTDB_CONTROL_SET_RECMASTERROLE = 105,
CTDB_CONTROL_ENABLE_SCRIPT = 107,
CTDB_CONTROL_DISABLE_SCRIPT = 108,
CTDB_CONTROL_SET_BAN_STATE = 109,
CTDB_CONTROL_GET_BAN_STATE = 110,
CTDB_CONTROL_SET_DB_PRIORITY = 111,
CTDB_CONTROL_GET_DB_PRIORITY = 112,
CTDB_CONTROL_TRANSACTION_CANCEL = 113,
CTDB_CONTROL_REGISTER_NOTIFY = 114,
CTDB_CONTROL_DEREGISTER_NOTIFY = 115,
CTDB_CONTROL_TRANS2_ACTIVE = 116,
CTDB_CONTROL_GET_LOG = 117,
CTDB_CONTROL_CLEAR_LOG = 118,
CTDB_CONTROL_TRANS3_COMMIT = 119,
CTDB_CONTROL_GET_DB_SEQNUM = 120,
CTDB_CONTROL_DB_SET_HEALTHY = 121,
CTDB_CONTROL_DB_GET_HEALTH = 122,
CTDB_CONTROL_GET_PUBLIC_IP_INFO = 123,
CTDB_CONTROL_GET_IFACES = 124,
CTDB_CONTROL_SET_IFACE_LINK_STATE = 125,
CTDB_CONTROL_TCP_ADD_DELAYED_UPDATE = 126,
CTDB_CONTROL_GET_STAT_HISTORY = 127,
CTDB_CONTROL_SCHEDULE_FOR_DELETION = 128,
CTDB_CONTROL_SET_DB_READONLY = 129,
CTDB_CONTROL_CHECK_SRVIDS = 130,
CTDB_CONTROL_TRAVERSE_START_EXT = 131,
CTDB_CONTROL_GET_DB_STATISTICS = 132,
};
/*
packet structures
*/
struct ctdb_req_header {
uint32_t length;
uint32_t ctdb_magic;
uint32_t ctdb_version;
uint32_t generation;
uint32_t operation;
uint32_t destnode;
uint32_t srcnode;
uint32_t reqid;
};
struct ctdb_req_call {
struct ctdb_req_header hdr;
uint32_t flags;
uint32_t db_id;
uint32_t callid;
uint32_t hopcount;
uint32_t keylen;
uint32_t calldatalen;
uint8_t data[1]; /* key[] followed by calldata[] */
};
struct ctdb_reply_call {
struct ctdb_req_header hdr;
uint32_t status;
uint32_t datalen;
uint8_t data[1];
};
struct ctdb_reply_error {
struct ctdb_req_header hdr;
uint32_t status;
uint32_t msglen;
uint8_t msg[1];
};
struct ctdb_req_dmaster {
struct ctdb_req_header hdr;
uint32_t db_id;
uint64_t rsn;
uint32_t dmaster;
uint32_t keylen;
uint32_t datalen;
uint8_t data[1];
};
struct ctdb_reply_dmaster {
struct ctdb_req_header hdr;
uint32_t db_id;
uint64_t rsn;
uint32_t keylen;
uint32_t datalen;
uint8_t data[1];
};
struct ctdb_req_message {
struct ctdb_req_header hdr;
uint64_t srvid;
uint32_t datalen;
uint8_t data[1];
};
struct ctdb_req_getdbpath {
struct ctdb_req_header hdr;
uint32_t db_id;
};
struct ctdb_reply_getdbpath {
struct ctdb_req_header hdr;
uint32_t datalen;
uint8_t data[1];
};
struct ctdb_req_control {
struct ctdb_req_header hdr;
uint32_t opcode;
uint32_t pad;
uint64_t srvid;
uint32_t client_id;
#define CTDB_CTRL_FLAG_NOREPLY 1
#define CTDB_CTRL_FLAG_OPCODE_SPECIFIC 0xFFFF0000
uint32_t flags;
uint32_t datalen;
uint8_t data[1];
};
struct ctdb_reply_control {
struct ctdb_req_header hdr;
int32_t status;
uint32_t datalen;
uint32_t errorlen;
uint8_t data[1];
};
struct ctdb_req_keepalive {
struct ctdb_req_header hdr;
};
/* types of failures possible from TRANS2_COMMIT */
enum ctdb_trans2_commit_error {
CTDB_TRANS2_COMMIT_SUCCESS=0, /* all nodes committed successfully */
CTDB_TRANS2_COMMIT_TIMEOUT=1, /* at least one node timed out */
CTDB_TRANS2_COMMIT_ALLFAIL=2, /* all nodes failed the commit */
CTDB_TRANS2_COMMIT_SOMEFAIL=3 /* some nodes failed the commit, some allowed it */
};
/*
the extended header for records in the ltdb
*/
struct ctdb_ltdb_header {
uint64_t rsn;
uint32_t dmaster;
uint32_t reserved1;
#define CTDB_REC_FLAG_DEFAULT 0x00000000
#define CTDB_REC_FLAG_MIGRATED_WITH_DATA 0x00010000
#define CTDB_REC_FLAG_VACUUM_MIGRATED 0x00020000
#define CTDB_REC_FLAG_AUTOMATIC 0x00040000
#define CTDB_REC_RO_HAVE_DELEGATIONS 0x01000000
#define CTDB_REC_RO_HAVE_READONLY 0x02000000
#define CTDB_REC_RO_REVOKING_READONLY 0x04000000
#define CTDB_REC_RO_REVOKE_COMPLETE 0x08000000
uint32_t flags;
};
/*
definitions for different socket structures
*/
typedef struct sockaddr_in ctdb_addr_in;
typedef struct sockaddr_in6 ctdb_addr_in6;
typedef union {
struct sockaddr sa;
ctdb_addr_in ip;
ctdb_addr_in6 ip6;
} ctdb_sock_addr;
/*
A structure describing a single node, its flags and its address
*/
struct ctdb_node_and_flags {
uint32_t pnn;
uint32_t flags;
ctdb_sock_addr addr;
};
/*
Structure used for a nodemap.
The nodemap is the structure containing a list of all nodes
known to the cluster and their associated flags.
*/
struct ctdb_node_map {
uint32_t num;
struct ctdb_node_and_flags nodes[1];
};
/*
* Node flags
*/
#define NODE_FLAGS_DISCONNECTED 0x00000001 /* node isn't connected */
#define NODE_FLAGS_UNHEALTHY 0x00000002 /* monitoring says node is unhealthy */
#define NODE_FLAGS_PERMANENTLY_DISABLED 0x00000004 /* administrator has disabled node */
#define NODE_FLAGS_BANNED 0x00000008 /* recovery daemon has banned the node */
#define NODE_FLAGS_DELETED 0x00000010 /* this node has been deleted */
#define NODE_FLAGS_STOPPED 0x00000020 /* this node has been stopped */
#define NODE_FLAGS_DISABLED (NODE_FLAGS_UNHEALTHY|NODE_FLAGS_PERMANENTLY_DISABLED)
#define NODE_FLAGS_INACTIVE (NODE_FLAGS_DELETED|NODE_FLAGS_DISCONNECTED|NODE_FLAGS_BANNED|NODE_FLAGS_STOPPED)
struct ctdb_public_ip {
uint32_t pnn;
ctdb_sock_addr addr;
};
struct ctdb_all_public_ips {
uint32_t num;
struct ctdb_public_ip ips[1];
};
struct latency_counter {
int num;
double min;
double max;
double total;
};
/*
structure used to pass record data between the child and parent
*/
struct ctdb_rec_data {
uint32_t length;
uint32_t reqid;
uint32_t keylen;
uint32_t datalen;
uint8_t data[1];
};
struct ctdb_traverse_start {
uint32_t db_id;
uint32_t reqid;
uint64_t srvid;
};
struct ctdb_traverse_start_ext {
uint32_t db_id;
uint32_t reqid;
uint64_t srvid;
bool withemptyrecords;
};
/*
ctdb statistics information
*/
struct ctdb_statistics {
uint32_t num_clients;
uint32_t frozen;
uint32_t recovering;
uint32_t client_packets_sent;
uint32_t client_packets_recv;
uint32_t node_packets_sent;
uint32_t node_packets_recv;
uint32_t keepalive_packets_sent;
uint32_t keepalive_packets_recv;
struct {
uint32_t req_call;
uint32_t reply_call;
uint32_t req_dmaster;
uint32_t reply_dmaster;
uint32_t reply_error;
uint32_t req_message;
uint32_t req_control;
uint32_t reply_control;
} node;
struct {
uint32_t req_call;
uint32_t req_message;
uint32_t req_control;
} client;
struct {
uint32_t call;
uint32_t control;
uint32_t traverse;
} timeouts;
struct {
struct latency_counter ctdbd;
struct latency_counter recd;
} reclock;
uint32_t total_calls;
uint32_t pending_calls;
uint32_t lockwait_calls;
uint32_t pending_lockwait_calls;
uint32_t childwrite_calls;
uint32_t pending_childwrite_calls;
uint32_t memory_used;
uint32_t __last_counter; /* hack for control_statistics_all */
uint32_t max_hop_count;
#define MAX_HOP_COUNT_BUCKETS 16
uint32_t hop_count_bucket[MAX_HOP_COUNT_BUCKETS];
struct latency_counter call_latency;
struct latency_counter lockwait_latency;
struct latency_counter childwrite_latency;
uint32_t num_recoveries;
struct timeval statistics_start_time;
struct timeval statistics_current_time;
uint32_t total_ro_delegations;
uint32_t total_ro_revokes;
};
/*
* wire format for statistics history
*/
struct ctdb_statistics_wire {
uint32_t num;
struct ctdb_statistics stats[1];
};
/*
* db statistics
*/
struct ctdb_db_statistics {
uint32_t db_ro_delegations;
uint32_t db_ro_revokes;
};
/*
* wire format for interface list
*/
#ifdef IFNAMSIZ
#define CTDB_IFACE_SIZE IFNAMSIZ
#else
#define CTDB_IFACE_SIZE 16
#endif
struct ctdb_iface_info {
char name[CTDB_IFACE_SIZE+2];
uint16_t link_state;
uint32_t references;
};
struct ctdb_ifaces_list {
uint32_t num;
struct ctdb_iface_info ifaces[1];
};
#define INVALID_GENERATION 1
/* table that contains the mapping between a hash value and lmaster
*/
struct ctdb_vnn_map {
uint32_t generation;
uint32_t size;
uint32_t *map;
};
/*
a wire representation of the vnn map
*/
struct ctdb_vnn_map_wire {
uint32_t generation;
uint32_t size;
uint32_t map[1];
};
#endif
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