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
|
/*-------------------------------------------------------------------------
*
* xlogdesc.c
* rmgr descriptor routines for access/transam/xlog.c
*
* Portions Copyright (c) 1996-2013, 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 "common/relpath.h"
#include "utils/guc.h"
#include "utils/timestamp.h"
/*
* GUC support
*/
const struct config_enum_entry wal_level_options[] = {
{"minimal", WAL_LEVEL_MINIMAL, false},
{"archive", WAL_LEVEL_ARCHIVE, false},
{"hot_standby", WAL_LEVEL_HOT_STANDBY, false},
{NULL, 0, false}
};
void
xlog_desc(StringInfo buf, uint8 xl_info, char *rec)
{
uint8 info = xl_info & ~XLR_INFO_MASK;
if (info == XLOG_CHECKPOINT_SHUTDOWN ||
info == XLOG_CHECKPOINT_ONLINE)
{
CheckPoint *checkpoint = (CheckPoint *) rec;
appendStringInfo(buf, "checkpoint: 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 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->oldestActiveXid,
(info == XLOG_CHECKPOINT_SHUTDOWN) ? "shutdown" : "online");
}
else if (info == XLOG_NOOP)
{
appendStringInfo(buf, "xlog no-op");
}
else if (info == XLOG_NEXTOID)
{
Oid nextOid;
memcpy(&nextOid, rec, sizeof(Oid));
appendStringInfo(buf, "nextOid: %u", nextOid);
}
else if (info == XLOG_SWITCH)
{
appendStringInfo(buf, "xlog switch");
}
else if (info == XLOG_RESTORE_POINT)
{
xl_restore_point *xlrec = (xl_restore_point *) rec;
appendStringInfo(buf, "restore point: %s", xlrec->rp_name);
}
else if (info == XLOG_HINT)
{
BkpBlock *bkp = (BkpBlock *) rec;
appendStringInfo(buf, "page hint: %s block %u",
relpathperm(bkp->node, bkp->fork),
bkp->block);
}
else if (info == XLOG_BACKUP_END)
{
XLogRecPtr startpoint;
memcpy(&startpoint, rec, sizeof(XLogRecPtr));
appendStringInfo(buf, "backup end: %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, "parameter change: max_connections=%d max_prepared_xacts=%d max_locks_per_xact=%d wal_level=%s",
xlrec.MaxConnections,
xlrec.max_prepared_xacts,
xlrec.max_locks_per_xact,
wal_level_str);
}
else if (info == XLOG_FPW_CHANGE)
{
bool fpw;
memcpy(&fpw, rec, sizeof(bool));
appendStringInfo(buf, "full_page_writes: %s", 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, "end_of_recovery: tli %u; prev tli %u; time %s",
xlrec.ThisTimeLineID, xlrec.PrevTimeLineID,
timestamptz_to_str(xlrec.end_time));
}
else
appendStringInfo(buf, "UNKNOWN");
}
|
