Branch data Line data Source code
1 : : /*
2 : : * pg_controldata
3 : : *
4 : : * reads the data from the control file located at $PGDATA/XLOG_CONTROL_FILE.
5 : : *
6 : : * copyright (c) Oliver Elphick <olly@lfix.co.uk>, 2001;
7 : : * license: BSD
8 : : *
9 : : * src/bin/pg_controldata/pg_controldata.c
10 : : */
11 : :
12 : : /*
13 : : * We have to use postgres.h not postgres_fe.h here, because there's so much
14 : : * backend-only stuff in the XLOG include files we need. But we need a
15 : : * frontend-ish environment otherwise. Hence this ugly hack.
16 : : */
17 : : #define FRONTEND 1
18 : :
19 : : #include "postgres.h"
20 : :
21 : : #include <time.h>
22 : :
23 : : #include "access/transam.h"
24 : : #include "access/xlog.h"
25 : : #include "access/xlog_internal.h"
26 : : #include "catalog/pg_control.h"
27 : : #include "common/controldata_utils.h"
28 : : #include "common/logging.h"
29 : : #include "getopt_long.h"
30 : : #include "pg_getopt.h"
31 : :
32 : : static void
33 : 1 : usage(const char *progname)
34 : : {
35 : 1 : printf(_("%s displays control information of a PostgreSQL database cluster.\n\n"), progname);
36 : 1 : printf(_("Usage:\n"));
37 : 1 : printf(_(" %s [OPTION] [DATADIR]\n"), progname);
38 : 1 : printf(_("\nOptions:\n"));
39 : 1 : printf(_(" [-D, --pgdata=]DATADIR data directory\n"));
40 : 1 : printf(_(" -V, --version output version information, then exit\n"));
41 : 1 : printf(_(" -?, --help show this help, then exit\n"));
42 : 1 : printf(_("\nIf no data directory (DATADIR) is specified, "
43 : : "the environment variable PGDATA\nis used.\n\n"));
44 : 1 : printf(_("Report bugs to <%s>.\n"), PACKAGE_BUGREPORT);
45 : 1 : printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
46 : 1 : }
47 : :
48 : :
49 : : static const char *
50 : 57 : dbState(DBState state)
51 : : {
52 [ + + + - : 57 : switch (state)
- - + - ]
53 : : {
54 : 1 : case DB_STARTUP:
55 : 1 : return _("starting up");
56 : 53 : case DB_SHUTDOWNED:
57 : 53 : return _("shut down");
58 : 2 : case DB_SHUTDOWNED_IN_RECOVERY:
59 : 2 : return _("shut down in recovery");
60 : 0 : case DB_SHUTDOWNING:
61 : 0 : return _("shutting down");
62 : 0 : case DB_IN_CRASH_RECOVERY:
63 : 0 : return _("in crash recovery");
64 : 0 : case DB_IN_ARCHIVE_RECOVERY:
65 : 0 : return _("in archive recovery");
66 : 1 : case DB_IN_PRODUCTION:
67 : 1 : return _("in production");
68 : : }
69 : 0 : return _("unrecognized status code");
70 : : }
71 : :
72 : : static const char *
73 : 57 : wal_level_str(WalLevel wal_level)
74 : : {
75 [ + + + - ]: 57 : switch (wal_level)
76 : : {
77 : 20 : case WAL_LEVEL_MINIMAL:
78 : 20 : return "minimal";
79 : 30 : case WAL_LEVEL_REPLICA:
80 : 30 : return "replica";
81 : 7 : case WAL_LEVEL_LOGICAL:
82 : 7 : return "logical";
83 : : }
84 : 0 : return _("unrecognized \"wal_level\"");
85 : : }
86 : :
87 : :
88 : : int
89 : 100 : main(int argc, char *argv[])
90 : : {
91 : : static struct option long_options[] = {
92 : : {"pgdata", required_argument, NULL, 'D'},
93 : : {NULL, 0, NULL, 0}
94 : : };
95 : :
96 : : ControlFileData *ControlFile;
97 : : bool crc_ok;
98 : 100 : char *DataDir = NULL;
99 : : time_t time_tmp;
100 : : struct tm *tm_tmp;
101 : : char pgctime_str[128];
102 : : char ckpttime_str[128];
103 : : char mock_auth_nonce_str[MOCK_AUTH_NONCE_LEN * 2 + 1];
104 : 100 : const char *strftime_fmt = "%c";
105 : : const char *progname;
106 : : char xlogfilename[MAXFNAMELEN];
107 : : int c;
108 : : int i;
109 : : int WalSegSz;
110 : :
111 : 100 : pg_logging_init(argv[0]);
112 : 100 : set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pg_controldata"));
113 : 100 : progname = get_progname(argv[0]);
114 : :
115 [ + + ]: 100 : if (argc > 1)
116 : : {
117 [ + + - + ]: 99 : if (strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-?") == 0)
118 : : {
119 : 1 : usage(progname);
120 : 1 : exit(0);
121 : : }
122 [ + + + + ]: 98 : if (strcmp(argv[1], "--version") == 0 || strcmp(argv[1], "-V") == 0)
123 : : {
124 : 39 : puts("pg_controldata (PostgreSQL) " PG_VERSION);
125 : 39 : exit(0);
126 : : }
127 : : }
128 : :
129 [ + + ]: 60 : while ((c = getopt_long(argc, argv, "D:", long_options, NULL)) != -1)
130 : : {
131 [ - + ]: 1 : switch (c)
132 : : {
133 : 0 : case 'D':
134 : 0 : DataDir = optarg;
135 : 0 : break;
136 : :
137 : 1 : default:
138 : : /* getopt_long already emitted a complaint */
139 : 1 : pg_log_error_hint("Try \"%s --help\" for more information.", progname);
140 : 1 : exit(1);
141 : : }
142 : : }
143 : :
144 [ + - ]: 59 : if (DataDir == NULL)
145 : : {
146 [ + + ]: 59 : if (optind < argc)
147 : 58 : DataDir = argv[optind++];
148 : : else
149 : 1 : DataDir = getenv("PGDATA");
150 : : }
151 : :
152 : : /* Complain if any arguments remain */
153 [ - + ]: 59 : if (optind < argc)
154 : : {
155 : 0 : pg_log_error("too many command-line arguments (first is \"%s\")",
156 : : argv[optind]);
157 : 0 : pg_log_error_hint("Try \"%s --help\" for more information.", progname);
158 : 0 : exit(1);
159 : : }
160 : :
161 [ + + ]: 59 : if (DataDir == NULL)
162 : : {
163 : 1 : pg_log_error("no data directory specified");
164 : 1 : pg_log_error_hint("Try \"%s --help\" for more information.", progname);
165 : 1 : exit(1);
166 : : }
167 : :
168 : : /* get a copy of the control file */
169 : 58 : ControlFile = get_controlfile(DataDir, &crc_ok);
170 [ - + ]: 57 : if (ControlFile->pg_control_version != PG_CONTROL_VERSION)
171 : : {
172 : 0 : pg_log_warning("control file version (%u) does not match the version understood by this program (%u)",
173 : : ControlFile->pg_control_version, PG_CONTROL_VERSION);
174 : 0 : pg_log_warning_detail("Either the control file has been created with a different version of PostgreSQL, "
175 : : "or it is corrupt. The results below are untrustworthy.");
176 : : }
177 [ + + ]: 57 : else if (!crc_ok)
178 : : {
179 : 1 : pg_log_warning("calculated CRC checksum does not match value stored in control file");
180 : 1 : pg_log_warning_detail("Either the control file is corrupt, or it has a different layout than this program "
181 : : "is expecting. The results below are untrustworthy.");
182 : : }
183 : :
184 : : /* set wal segment size */
185 : 57 : WalSegSz = ControlFile->xlog_seg_size;
186 : :
187 [ + + + - : 57 : if (!IsValidWalSegSize(WalSegSz))
+ - - + ]
188 : : {
189 : 1 : pg_log_warning(ngettext("invalid WAL segment size in control file (%d byte)",
190 : : "invalid WAL segment size in control file (%d bytes)",
191 : : WalSegSz),
192 : : WalSegSz);
193 : 1 : pg_log_warning_detail("The WAL segment size must be a power of two between 1 MB and 1 GB.");
194 : 1 : pg_log_warning_detail("The file is corrupt and the results below are untrustworthy.");
195 : : }
196 : :
197 : : /*
198 : : * This slightly-chintzy coding will work as long as the control file
199 : : * timestamps are within the range of time_t; that should be the case in
200 : : * all foreseeable circumstances, so we don't bother importing the
201 : : * backend's timezone library into pg_controldata.
202 : : *
203 : : * Use variable for format to suppress overly-anal-retentive gcc warning
204 : : * about %c
205 : : */
206 : 57 : time_tmp = (time_t) ControlFile->time;
207 : 57 : tm_tmp = localtime(&time_tmp);
208 : :
209 [ + - ]: 57 : if (tm_tmp != NULL)
210 : 57 : strftime(pgctime_str, sizeof(pgctime_str), strftime_fmt, tm_tmp);
211 : : else
212 : 0 : snprintf(pgctime_str, sizeof(pgctime_str), _("???"));
213 : :
214 : 57 : time_tmp = (time_t) ControlFile->checkPointCopy.time;
215 : 57 : tm_tmp = localtime(&time_tmp);
216 : :
217 [ + - ]: 57 : if (tm_tmp != NULL)
218 : 57 : strftime(ckpttime_str, sizeof(ckpttime_str), strftime_fmt, tm_tmp);
219 : : else
220 : 0 : snprintf(ckpttime_str, sizeof(ckpttime_str), _("???"));
221 : :
222 : : /*
223 : : * Calculate name of the WAL file containing the latest checkpoint's REDO
224 : : * start point.
225 : : *
226 : : * A corrupted control file could report a WAL segment size of 0 or
227 : : * negative value, and to guard against division by zero, we need to treat
228 : : * that specially.
229 : : */
230 [ + + ]: 57 : if (WalSegSz > 0)
231 : : {
232 : : XLogSegNo segno;
233 : :
234 : 56 : XLByteToSeg(ControlFile->checkPointCopy.redo, segno, WalSegSz);
235 : 56 : XLogFileName(xlogfilename, ControlFile->checkPointCopy.ThisTimeLineID,
236 : : segno, WalSegSz);
237 : : }
238 : : else
239 : 1 : strcpy(xlogfilename, _("???"));
240 : :
241 [ + + ]: 1881 : for (i = 0; i < MOCK_AUTH_NONCE_LEN; i++)
242 : 1824 : snprintf(&mock_auth_nonce_str[i * 2], 3, "%02x",
243 : 1824 : (unsigned char) ControlFile->mock_authentication_nonce[i]);
244 : :
245 : 57 : printf(_("pg_control version number: %u\n"),
246 : : ControlFile->pg_control_version);
247 : 57 : printf(_("Catalog version number: %u\n"),
248 : : ControlFile->catalog_version_no);
249 : 57 : printf(_("Database system identifier: %" PRIu64 "\n"),
250 : : ControlFile->system_identifier);
251 : 57 : printf(_("Database cluster state: %s\n"),
252 : : dbState(ControlFile->state));
253 : 57 : printf(_("pg_control last modified: %s\n"),
254 : : pgctime_str);
255 : 57 : printf(_("Latest checkpoint location: %X/%08X\n"),
256 : : LSN_FORMAT_ARGS(ControlFile->checkPoint));
257 : 57 : printf(_("Latest checkpoint's REDO location: %X/%08X\n"),
258 : : LSN_FORMAT_ARGS(ControlFile->checkPointCopy.redo));
259 : 57 : printf(_("Latest checkpoint's REDO WAL file: %s\n"),
260 : : xlogfilename);
261 : 57 : printf(_("Latest checkpoint's TimeLineID: %u\n"),
262 : : ControlFile->checkPointCopy.ThisTimeLineID);
263 : 57 : printf(_("Latest checkpoint's PrevTimeLineID: %u\n"),
264 : : ControlFile->checkPointCopy.PrevTimeLineID);
265 [ + + ]: 57 : printf(_("Latest checkpoint's full_page_writes: %s\n"),
266 : : ControlFile->checkPointCopy.fullPageWrites ? _("on") : _("off"));
267 : 57 : printf(_("Latest checkpoint's NextXID: %u:%u\n"),
268 : : EpochFromFullTransactionId(ControlFile->checkPointCopy.nextXid),
269 : : XidFromFullTransactionId(ControlFile->checkPointCopy.nextXid));
270 : 57 : printf(_("Latest checkpoint's NextOID: %u\n"),
271 : : ControlFile->checkPointCopy.nextOid);
272 : 57 : printf(_("Latest checkpoint's NextMultiXactId: %u\n"),
273 : : ControlFile->checkPointCopy.nextMulti);
274 : 57 : printf(_("Latest checkpoint's NextMultiOffset: %" PRIu64 "\n"),
275 : : ControlFile->checkPointCopy.nextMultiOffset);
276 : 57 : printf(_("Latest checkpoint's oldestXID: %u\n"),
277 : : ControlFile->checkPointCopy.oldestXid);
278 : 57 : printf(_("Latest checkpoint's oldestXID's DB: %u\n"),
279 : : ControlFile->checkPointCopy.oldestXidDB);
280 : 57 : printf(_("Latest checkpoint's oldestActiveXID: %u\n"),
281 : : ControlFile->checkPointCopy.oldestActiveXid);
282 : 57 : printf(_("Latest checkpoint's oldestMultiXid: %u\n"),
283 : : ControlFile->checkPointCopy.oldestMulti);
284 : 57 : printf(_("Latest checkpoint's oldestMulti's DB: %u\n"),
285 : : ControlFile->checkPointCopy.oldestMultiDB);
286 : 57 : printf(_("Latest checkpoint's oldestCommitTsXid:%u\n"),
287 : : ControlFile->checkPointCopy.oldestCommitTsXid);
288 : 57 : printf(_("Latest checkpoint's newestCommitTsXid:%u\n"),
289 : : ControlFile->checkPointCopy.newestCommitTsXid);
290 : 57 : printf(_("Latest checkpoint's data_checksum_version:%u\n"),
291 : : ControlFile->checkPointCopy.dataChecksumState);
292 : 57 : printf(_("Time of latest checkpoint: %s\n"),
293 : : ckpttime_str);
294 : 57 : printf(_("Fake LSN counter for unlogged rels: %X/%08X\n"),
295 : : LSN_FORMAT_ARGS(ControlFile->unloggedLSN));
296 : 57 : printf(_("Minimum recovery ending location: %X/%08X\n"),
297 : : LSN_FORMAT_ARGS(ControlFile->minRecoveryPoint));
298 : 57 : printf(_("Min recovery ending loc's timeline: %u\n"),
299 : : ControlFile->minRecoveryPointTLI);
300 : 57 : printf(_("Backup start location: %X/%08X\n"),
301 : : LSN_FORMAT_ARGS(ControlFile->backupStartPoint));
302 : 57 : printf(_("Backup end location: %X/%08X\n"),
303 : : LSN_FORMAT_ARGS(ControlFile->backupEndPoint));
304 [ - + ]: 57 : printf(_("End-of-backup record required: %s\n"),
305 : : ControlFile->backupEndRequired ? _("yes") : _("no"));
306 : 57 : printf(_("wal_level setting: %s\n"),
307 : : wal_level_str(ControlFile->wal_level));
308 [ + + ]: 57 : printf(_("wal_log_hints setting: %s\n"),
309 : : ControlFile->wal_log_hints ? _("on") : _("off"));
310 : 57 : printf(_("max_connections setting: %d\n"),
311 : : ControlFile->MaxConnections);
312 : 57 : printf(_("max_worker_processes setting: %d\n"),
313 : : ControlFile->max_worker_processes);
314 : 57 : printf(_("max_wal_senders setting: %d\n"),
315 : : ControlFile->max_wal_senders);
316 : 57 : printf(_("max_prepared_xacts setting: %d\n"),
317 : : ControlFile->max_prepared_xacts);
318 : 57 : printf(_("max_locks_per_xact setting: %d\n"),
319 : : ControlFile->max_locks_per_xact);
320 [ - + ]: 57 : printf(_("track_commit_timestamp setting: %s\n"),
321 : : ControlFile->track_commit_timestamp ? _("on") : _("off"));
322 : 57 : printf(_("Maximum data alignment: %u\n"),
323 : : ControlFile->maxAlign);
324 : : /* we don't print floatFormat since can't say much useful about it */
325 : 57 : printf(_("Database block size: %u\n"),
326 : : ControlFile->blcksz);
327 : 57 : printf(_("Blocks per segment of large relation: %u\n"),
328 : : ControlFile->relseg_size);
329 : 57 : printf(_("Pages per SLRU segment: %u\n"),
330 : : ControlFile->slru_pages_per_segment);
331 : 57 : printf(_("WAL block size: %u\n"),
332 : : ControlFile->xlog_blcksz);
333 : 57 : printf(_("Bytes per WAL segment: %u\n"),
334 : : ControlFile->xlog_seg_size);
335 : 57 : printf(_("Maximum length of identifiers: %u\n"),
336 : : ControlFile->nameDataLen);
337 : 57 : printf(_("Maximum columns in an index: %u\n"),
338 : : ControlFile->indexMaxKeys);
339 : 57 : printf(_("Maximum size of a TOAST chunk: %u\n"),
340 : : ControlFile->toast_max_chunk_size);
341 : 57 : printf(_("Size of a large-object chunk: %u\n"),
342 : : ControlFile->loblksize);
343 : : /* This is no longer configurable, but users may still expect to see it: */
344 : 57 : printf(_("Date/time type storage: %s\n"),
345 : : _("64-bit integers"));
346 [ + + ]: 57 : printf(_("Float8 argument passing: %s\n"),
347 : : (ControlFile->float8ByVal ? _("by value") : _("by reference")));
348 : 57 : printf(_("Data page checksum version: %u\n"),
349 : : ControlFile->data_checksum_version);
350 [ + + ]: 57 : printf(_("Default char data signedness: %s\n"),
351 : : (ControlFile->default_char_signedness ? _("signed") : _("unsigned")));
352 : 57 : printf(_("Mock authentication nonce: %s\n"),
353 : : mock_auth_nonce_str);
354 : 57 : return 0;
355 : : }
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