1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
/*-------------------------------------------------------------------------
*
* xlogdesc.c
* rmgr descriptor routines for access/transam/xlog.c
*
* Portions Copyright (c) 1996-2017, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
*
* IDENTIFICATION
* src/backend/access/rmgrdesc/xlogdesc.c
*
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include "access/xlog.h"
#include "access/xlog_internal.h"
#include "catalog/pg_control.h"
#include "utils/guc.h"
#include "utils/timestamp.h"
/*
* GUC support
*/
const struct config_enum_entry wal_level_options[] = {
{"minimal", WAL_LEVEL_MINIMAL, false},
{"replica", WAL_LEVEL_REPLICA, false},
{"archive", WAL_LEVEL_REPLICA, true}, /* deprecated */
{"hot_standby", WAL_LEVEL_REPLICA, true}, /* deprecated */
{"logical", WAL_LEVEL_LOGICAL, false},
{NULL, 0, false}
};
void
xlog_desc(StringInfo buf, XLogReaderState *record)
{
char *rec = XLogRecGetData(record);
uint8 info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
if (info == XLOG_CHECKPOINT_SHUTDOWN ||
info == XLOG_CHECKPOINT_ONLINE)
{
CheckPoint *checkpoint = (CheckPoint *) rec;
appendStringInfo(buf, "redo %X/%X; "
"tli %u; prev tli %u; fpw %s; xid %u:%u; oid %u; multi %u; offset %u; "
"oldest xid %u in DB %u; oldest multi %u in DB %u; "
"oldest/newest commit timestamp xid: %u/%u; "
"oldest running xid %u; %s",
(uint32) (checkpoint->redo >> 32), (uint32) checkpoint->redo,
checkpoint->ThisTimeLineID,
checkpoint->PrevTimeLineID,
checkpoint->fullPageWrites ? "true" : "false",
checkpoint->nextXidEpoch, checkpoint->nextXid,
checkpoint->nextOid,
checkpoint->nextMulti,
checkpoint->nextMultiOffset,
checkpoint->oldestXid,
checkpoint->oldestXidDB,
checkpoint->oldestMulti,
checkpoint->oldestMultiDB,
checkpoint->oldestCommitTsXid,
checkpoint->newestCommitTsXid,
checkpoint->oldestActiveXid,
(info == XLOG_CHECKPOINT_SHUTDOWN) ? "shutdown" : "online");
}
else if (info == XLOG_NEXTOID)
{
Oid nextOid;
memcpy(&nextOid, rec, sizeof(Oid));
appendStringInfo(buf, "%u", nextOid);
}
else if (info == XLOG_RESTORE_POINT)
{
xl_restore_point *xlrec = (xl_restore_point *) rec;
appendStringInfoString(buf, xlrec->rp_name);
}
else if (info == XLOG_FPI || info == XLOG_FPI_FOR_HINT)
{
/* no further information to print */
}
else if (info == XLOG_BACKUP_END)
{
XLogRecPtr startpoint;
memcpy(&startpoint, rec, sizeof(XLogRecPtr));
appendStringInfo(buf, "%X/%X",
(uint32) (startpoint >> 32), (uint32) startpoint);
}
else if (info == XLOG_PARAMETER_CHANGE)
{
xl_parameter_change xlrec;
const char *wal_level_str;
const struct config_enum_entry *entry;
memcpy(&xlrec, rec, sizeof(xl_parameter_change));
/* Find a string representation for wal_level */
wal_level_str = "?";
for (entry = wal_level_options; entry->name; entry++)
{
if (entry->val == xlrec.wal_level)
{
wal_level_str = entry->name;
break;
}
}
appendStringInfo(buf, "max_connections=%d max_worker_processes=%d "
"max_prepared_xacts=%d max_locks_per_xact=%d "
"wal_level=%s wal_log_hints=%s "
"track_commit_timestamp=%s",
xlrec.MaxConnections,
xlrec.max_worker_processes,
xlrec.max_prepared_xacts,
xlrec.max_locks_per_xact,
wal_level_str,
xlrec.wal_log_hints ? "on" : "off",
xlrec.track_commit_timestamp ? "on" : "off");
}
else if (info == XLOG_FPW_CHANGE)
{
bool fpw;
memcpy(&fpw, rec, sizeof(bool));
appendStringInfoString(buf, fpw ? "true" : "false");
}
else if (info == XLOG_END_OF_RECOVERY)
{
xl_end_of_recovery xlrec;
memcpy(&xlrec, rec, sizeof(xl_end_of_recovery));
appendStringInfo(buf, "tli %u; prev tli %u; time %s",
xlrec.ThisTimeLineID, xlrec.PrevTimeLineID,
timestamptz_to_str(xlrec.end_time));
}
}
const char *
xlog_identify(uint8 info)
{
const char *id = NULL;
switch (info & ~XLR_INFO_MASK)
{
case XLOG_CHECKPOINT_SHUTDOWN:
id = "CHECKPOINT_SHUTDOWN";
break;
case XLOG_CHECKPOINT_ONLINE:
id = "CHECKPOINT_ONLINE";
break;
case XLOG_NOOP:
id = "NOOP";
break;
case XLOG_NEXTOID:
id = "NEXTOID";
break;
case XLOG_SWITCH:
id = "SWITCH";
break;
case XLOG_BACKUP_END:
id = "BACKUP_END";
break;
case XLOG_PARAMETER_CHANGE:
id = "PARAMETER_CHANGE";
break;
case XLOG_RESTORE_POINT:
id = "RESTORE_POINT";
break;
case XLOG_FPW_CHANGE:
id = "FPW_CHANGE";
break;
case XLOG_END_OF_RECOVERY:
id = "END_OF_RECOVERY";
break;
case XLOG_FPI:
id = "FPI";
break;
case XLOG_FPI_FOR_HINT:
id = "FPI_FOR_HINT";
break;
}
return id;
}
|
