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Lc_collate and lc_ctype have been per-database settings since server version 8.4, but pg_upgrade was still treating them as cluster-wide options. It fetched the values for the template0 databases in old and new cluster, and compared them. That's backwards; the encoding and locale of the template0 database doesn't matter, as template0 is guaranteed to contain only ASCII characters. But if there are any other databases that exist on both clusters (in particular template1 and postgres databases), their encodings and locales must be compatible. Also, make the locale comparison more lenient. If the locale names are not equal, try to canonicalize both of them by passing them to setlocale(). We used to do that only when upgrading from 9.1 or below, but it seems like a good idea even with newer versions. If we change the canonical form of a locale, this allows pg_upgrade to still work. I'm about to do just that to fix bug #11431, by mapping a locale name that contains non-ASCII characters to a pure-ASCII alias of the same locale. No backpatching, because earlier versions of pg_upgrade still support upgrading from 8.3 servers. That would be more complicated, so it doesn't seem worth it, given that we haven't received any complaints about this from users.
603 lines
18 KiB
C
603 lines
18 KiB
C
/*
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* controldata.c
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*
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* controldata functions
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*
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* Copyright (c) 2010-2014, PostgreSQL Global Development Group
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* contrib/pg_upgrade/controldata.c
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*/
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#include "postgres_fe.h"
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#include "pg_upgrade.h"
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#include <ctype.h>
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/*
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* get_control_data()
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*
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* gets pg_control information in "ctrl". Assumes that bindir and
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* datadir are valid absolute paths to postgresql bin and pgdata
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* directories respectively *and* pg_resetxlog is version compatible
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* with datadir. The main purpose of this function is to get pg_control
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* data in a version independent manner.
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*
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* The approach taken here is to invoke pg_resetxlog with -n option
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* and then pipe its output. With little string parsing we get the
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* pg_control data. pg_resetxlog cannot be run while the server is running
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* so we use pg_controldata; pg_controldata doesn't provide all the fields
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* we need to actually perform the upgrade, but it provides enough for
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* check mode. We do not implement pg_resetxlog -n because it is hard to
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* return valid xid data for a running server.
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*/
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void
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get_control_data(ClusterInfo *cluster, bool live_check)
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{
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char cmd[MAXPGPATH];
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char bufin[MAX_STRING];
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FILE *output;
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char *p;
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bool got_xid = false;
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bool got_oid = false;
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bool got_nextxlogfile = false;
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bool got_multi = false;
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bool got_mxoff = false;
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bool got_oldestmulti = false;
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bool got_log_id = false;
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bool got_log_seg = false;
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bool got_tli = false;
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bool got_align = false;
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bool got_blocksz = false;
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bool got_largesz = false;
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bool got_walsz = false;
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bool got_walseg = false;
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bool got_ident = false;
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bool got_index = false;
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bool got_toast = false;
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bool got_large_object = false;
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bool got_date_is_int = false;
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bool got_float8_pass_by_value = false;
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bool got_data_checksum_version = false;
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char *lc_collate = NULL;
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char *lc_ctype = NULL;
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char *lc_monetary = NULL;
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char *lc_numeric = NULL;
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char *lc_time = NULL;
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char *lang = NULL;
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char *language = NULL;
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char *lc_all = NULL;
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char *lc_messages = NULL;
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uint32 logid = 0;
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uint32 segno = 0;
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uint32 tli = 0;
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/*
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* Because we test the pg_resetxlog output as strings, it has to be in
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* English. Copied from pg_regress.c.
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*/
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if (getenv("LC_COLLATE"))
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lc_collate = pg_strdup(getenv("LC_COLLATE"));
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if (getenv("LC_CTYPE"))
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lc_ctype = pg_strdup(getenv("LC_CTYPE"));
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if (getenv("LC_MONETARY"))
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lc_monetary = pg_strdup(getenv("LC_MONETARY"));
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if (getenv("LC_NUMERIC"))
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lc_numeric = pg_strdup(getenv("LC_NUMERIC"));
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if (getenv("LC_TIME"))
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lc_time = pg_strdup(getenv("LC_TIME"));
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if (getenv("LANG"))
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lang = pg_strdup(getenv("LANG"));
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if (getenv("LANGUAGE"))
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language = pg_strdup(getenv("LANGUAGE"));
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if (getenv("LC_ALL"))
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lc_all = pg_strdup(getenv("LC_ALL"));
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if (getenv("LC_MESSAGES"))
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lc_messages = pg_strdup(getenv("LC_MESSAGES"));
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pg_putenv("LC_COLLATE", NULL);
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pg_putenv("LC_CTYPE", NULL);
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pg_putenv("LC_MONETARY", NULL);
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pg_putenv("LC_NUMERIC", NULL);
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pg_putenv("LC_TIME", NULL);
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pg_putenv("LANG",
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#ifndef WIN32
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NULL);
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#else
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/* On Windows the default locale cannot be English, so force it */
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"en");
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#endif
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pg_putenv("LANGUAGE", NULL);
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pg_putenv("LC_ALL", NULL);
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pg_putenv("LC_MESSAGES", "C");
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snprintf(cmd, sizeof(cmd), "\"%s/%s \"%s\"",
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cluster->bindir,
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live_check ? "pg_controldata\"" : "pg_resetxlog\" -n",
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cluster->pgdata);
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fflush(stdout);
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fflush(stderr);
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if ((output = popen(cmd, "r")) == NULL)
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pg_fatal("Could not get control data using %s: %s\n",
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cmd, getErrorText(errno));
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/* Only in <= 9.2 */
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if (GET_MAJOR_VERSION(cluster->major_version) <= 902)
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{
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cluster->controldata.data_checksum_version = 0;
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got_data_checksum_version = true;
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}
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/* we have the result of cmd in "output". so parse it line by line now */
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while (fgets(bufin, sizeof(bufin), output))
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{
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pg_log(PG_VERBOSE, "%s", bufin);
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if ((p = strstr(bufin, "pg_control version number:")) != NULL)
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{
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p = strchr(p, ':');
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if (p == NULL || strlen(p) <= 1)
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pg_fatal("%d: pg_resetxlog problem\n", __LINE__);
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p++; /* remove ':' char */
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cluster->controldata.ctrl_ver = str2uint(p);
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}
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else if ((p = strstr(bufin, "Catalog version number:")) != NULL)
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{
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p = strchr(p, ':');
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if (p == NULL || strlen(p) <= 1)
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pg_fatal("%d: controldata retrieval problem\n", __LINE__);
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p++; /* remove ':' char */
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cluster->controldata.cat_ver = str2uint(p);
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}
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else if ((p = strstr(bufin, "First log segment after reset:")) != NULL)
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{
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/* Skip the colon and any whitespace after it */
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p = strchr(p, ':');
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if (p == NULL || strlen(p) <= 1)
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pg_fatal("%d: controldata retrieval problem\n", __LINE__);
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p = strpbrk(p, "01234567890ABCDEF");
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if (p == NULL || strlen(p) <= 1)
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pg_fatal("%d: controldata retrieval problem\n", __LINE__);
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/* Make sure it looks like a valid WAL file name */
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if (strspn(p, "0123456789ABCDEF") != 24)
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pg_fatal("%d: controldata retrieval problem\n", __LINE__);
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strlcpy(cluster->controldata.nextxlogfile, p, 25);
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got_nextxlogfile = true;
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}
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else if ((p = strstr(bufin, "First log file ID after reset:")) != NULL)
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{
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p = strchr(p, ':');
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if (p == NULL || strlen(p) <= 1)
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pg_fatal("%d: controldata retrieval problem\n", __LINE__);
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p++; /* remove ':' char */
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logid = str2uint(p);
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got_log_id = true;
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}
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else if ((p = strstr(bufin, "First log file segment after reset:")) != NULL)
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{
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p = strchr(p, ':');
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if (p == NULL || strlen(p) <= 1)
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pg_fatal("%d: controldata retrieval problem\n", __LINE__);
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p++; /* remove ':' char */
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segno = str2uint(p);
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got_log_seg = true;
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}
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else if ((p = strstr(bufin, "Latest checkpoint's TimeLineID:")) != NULL)
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{
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p = strchr(p, ':');
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if (p == NULL || strlen(p) <= 1)
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pg_fatal("%d: controldata retrieval problem\n", __LINE__);
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p++; /* remove ':' char */
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cluster->controldata.chkpnt_tli = str2uint(p);
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got_tli = true;
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}
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else if ((p = strstr(bufin, "Latest checkpoint's NextXID:")) != NULL)
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{
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p = strchr(p, ':');
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if (p == NULL || strlen(p) <= 1)
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pg_fatal("%d: controldata retrieval problem\n", __LINE__);
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p++; /* remove ':' char */
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cluster->controldata.chkpnt_nxtepoch = str2uint(p);
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p = strchr(p, '/');
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if (p == NULL || strlen(p) <= 1)
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pg_fatal("%d: controldata retrieval problem\n", __LINE__);
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p++; /* remove '/' char */
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cluster->controldata.chkpnt_nxtxid = str2uint(p);
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got_xid = true;
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}
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else if ((p = strstr(bufin, "Latest checkpoint's NextOID:")) != NULL)
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{
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p = strchr(p, ':');
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if (p == NULL || strlen(p) <= 1)
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pg_fatal("%d: controldata retrieval problem\n", __LINE__);
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p++; /* remove ':' char */
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cluster->controldata.chkpnt_nxtoid = str2uint(p);
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got_oid = true;
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}
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else if ((p = strstr(bufin, "Latest checkpoint's NextMultiXactId:")) != NULL)
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{
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p = strchr(p, ':');
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if (p == NULL || strlen(p) <= 1)
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pg_fatal("%d: controldata retrieval problem\n", __LINE__);
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p++; /* remove ':' char */
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cluster->controldata.chkpnt_nxtmulti = str2uint(p);
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got_multi = true;
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}
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else if ((p = strstr(bufin, "Latest checkpoint's oldestMultiXid:")) != NULL)
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{
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p = strchr(p, ':');
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if (p == NULL || strlen(p) <= 1)
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pg_fatal("%d: controldata retrieval problem\n", __LINE__);
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p++; /* remove ':' char */
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cluster->controldata.chkpnt_oldstMulti = str2uint(p);
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got_oldestmulti = true;
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}
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else if ((p = strstr(bufin, "Latest checkpoint's NextMultiOffset:")) != NULL)
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{
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p = strchr(p, ':');
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if (p == NULL || strlen(p) <= 1)
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pg_fatal("%d: controldata retrieval problem\n", __LINE__);
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p++; /* remove ':' char */
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cluster->controldata.chkpnt_nxtmxoff = str2uint(p);
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got_mxoff = true;
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}
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else if ((p = strstr(bufin, "Maximum data alignment:")) != NULL)
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{
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p = strchr(p, ':');
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if (p == NULL || strlen(p) <= 1)
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pg_fatal("%d: controldata retrieval problem\n", __LINE__);
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p++; /* remove ':' char */
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cluster->controldata.align = str2uint(p);
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got_align = true;
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}
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else if ((p = strstr(bufin, "Database block size:")) != NULL)
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{
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p = strchr(p, ':');
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if (p == NULL || strlen(p) <= 1)
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pg_fatal("%d: controldata retrieval problem\n", __LINE__);
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p++; /* remove ':' char */
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cluster->controldata.blocksz = str2uint(p);
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got_blocksz = true;
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}
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else if ((p = strstr(bufin, "Blocks per segment of large relation:")) != NULL)
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{
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p = strchr(p, ':');
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if (p == NULL || strlen(p) <= 1)
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pg_fatal("%d: controldata retrieval problem\n", __LINE__);
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p++; /* remove ':' char */
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cluster->controldata.largesz = str2uint(p);
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got_largesz = true;
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}
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else if ((p = strstr(bufin, "WAL block size:")) != NULL)
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{
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p = strchr(p, ':');
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if (p == NULL || strlen(p) <= 1)
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pg_fatal("%d: controldata retrieval problem\n", __LINE__);
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p++; /* remove ':' char */
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cluster->controldata.walsz = str2uint(p);
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got_walsz = true;
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}
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else if ((p = strstr(bufin, "Bytes per WAL segment:")) != NULL)
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{
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p = strchr(p, ':');
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if (p == NULL || strlen(p) <= 1)
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pg_fatal("%d: controldata retrieval problem\n", __LINE__);
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p++; /* remove ':' char */
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cluster->controldata.walseg = str2uint(p);
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got_walseg = true;
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}
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else if ((p = strstr(bufin, "Maximum length of identifiers:")) != NULL)
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{
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p = strchr(p, ':');
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if (p == NULL || strlen(p) <= 1)
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pg_fatal("%d: controldata retrieval problem\n", __LINE__);
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p++; /* remove ':' char */
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cluster->controldata.ident = str2uint(p);
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got_ident = true;
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}
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else if ((p = strstr(bufin, "Maximum columns in an index:")) != NULL)
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{
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p = strchr(p, ':');
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if (p == NULL || strlen(p) <= 1)
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pg_fatal("%d: controldata retrieval problem\n", __LINE__);
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p++; /* remove ':' char */
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cluster->controldata.index = str2uint(p);
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got_index = true;
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}
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else if ((p = strstr(bufin, "Maximum size of a TOAST chunk:")) != NULL)
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{
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p = strchr(p, ':');
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if (p == NULL || strlen(p) <= 1)
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pg_fatal("%d: controldata retrieval problem\n", __LINE__);
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p++; /* remove ':' char */
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cluster->controldata.toast = str2uint(p);
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got_toast = true;
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}
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else if ((p = strstr(bufin, "Size of a large-object chunk:")) != NULL)
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{
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p = strchr(p, ':');
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if (p == NULL || strlen(p) <= 1)
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pg_fatal("%d: controldata retrieval problem\n", __LINE__);
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p++; /* remove ':' char */
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cluster->controldata.large_object = str2uint(p);
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got_large_object = true;
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}
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else if ((p = strstr(bufin, "Date/time type storage:")) != NULL)
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{
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p = strchr(p, ':');
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if (p == NULL || strlen(p) <= 1)
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pg_fatal("%d: controldata retrieval problem\n", __LINE__);
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p++; /* remove ':' char */
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cluster->controldata.date_is_int = strstr(p, "64-bit integers") != NULL;
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got_date_is_int = true;
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}
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else if ((p = strstr(bufin, "Float8 argument passing:")) != NULL)
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{
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p = strchr(p, ':');
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if (p == NULL || strlen(p) <= 1)
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pg_fatal("%d: controldata retrieval problem\n", __LINE__);
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p++; /* remove ':' char */
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/* used later for contrib check */
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cluster->controldata.float8_pass_by_value = strstr(p, "by value") != NULL;
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got_float8_pass_by_value = true;
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}
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else if ((p = strstr(bufin, "checksum")) != NULL)
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{
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p = strchr(p, ':');
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if (p == NULL || strlen(p) <= 1)
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pg_fatal("%d: controldata retrieval problem\n", __LINE__);
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p++; /* remove ':' char */
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/* used later for contrib check */
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cluster->controldata.data_checksum_version = str2uint(p);
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got_data_checksum_version = true;
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}
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}
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if (output)
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pclose(output);
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/*
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* Restore environment variables
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*/
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pg_putenv("LC_COLLATE", lc_collate);
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pg_putenv("LC_CTYPE", lc_ctype);
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pg_putenv("LC_MONETARY", lc_monetary);
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pg_putenv("LC_NUMERIC", lc_numeric);
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pg_putenv("LC_TIME", lc_time);
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pg_putenv("LANG", lang);
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pg_putenv("LANGUAGE", language);
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pg_putenv("LC_ALL", lc_all);
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pg_putenv("LC_MESSAGES", lc_messages);
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pg_free(lc_collate);
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pg_free(lc_ctype);
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pg_free(lc_monetary);
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pg_free(lc_numeric);
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pg_free(lc_time);
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pg_free(lang);
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pg_free(language);
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pg_free(lc_all);
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pg_free(lc_messages);
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/*
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* Before 9.3, pg_resetxlog reported the xlogid and segno of the first log
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* file after reset as separate lines. Starting with 9.3, it reports the
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* WAL file name. If the old cluster is older than 9.3, we construct the
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* WAL file name from the xlogid and segno.
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*/
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if (GET_MAJOR_VERSION(cluster->major_version) <= 902)
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{
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if (got_log_id && got_log_seg)
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{
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snprintf(cluster->controldata.nextxlogfile, 25, "%08X%08X%08X",
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tli, logid, segno);
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got_nextxlogfile = true;
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}
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}
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/* verify that we got all the mandatory pg_control data */
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if (!got_xid || !got_oid ||
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!got_multi || !got_mxoff ||
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(!got_oldestmulti &&
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cluster->controldata.cat_ver >= MULTIXACT_FORMATCHANGE_CAT_VER) ||
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(!live_check && !got_nextxlogfile) ||
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!got_tli ||
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!got_align || !got_blocksz || !got_largesz || !got_walsz ||
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!got_walseg || !got_ident || !got_index || !got_toast ||
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(!got_large_object &&
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cluster->controldata.ctrl_ver >= LARGE_OBJECT_SIZE_PG_CONTROL_VER) ||
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!got_date_is_int || !got_float8_pass_by_value || !got_data_checksum_version)
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{
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pg_log(PG_REPORT,
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"The %s cluster lacks some required control information:\n",
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CLUSTER_NAME(cluster));
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if (!got_xid)
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pg_log(PG_REPORT, " checkpoint next XID\n");
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if (!got_oid)
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pg_log(PG_REPORT, " latest checkpoint next OID\n");
|
|
|
|
if (!got_multi)
|
|
pg_log(PG_REPORT, " latest checkpoint next MultiXactId\n");
|
|
|
|
if (!got_mxoff)
|
|
pg_log(PG_REPORT, " latest checkpoint next MultiXactOffset\n");
|
|
|
|
if (!got_oldestmulti &&
|
|
cluster->controldata.cat_ver >= MULTIXACT_FORMATCHANGE_CAT_VER)
|
|
pg_log(PG_REPORT, " latest checkpoint oldest MultiXactId\n");
|
|
|
|
if (!live_check && !got_nextxlogfile)
|
|
pg_log(PG_REPORT, " first WAL segment after reset\n");
|
|
|
|
if (!got_tli)
|
|
pg_log(PG_REPORT, " latest checkpoint timeline ID\n");
|
|
|
|
if (!got_align)
|
|
pg_log(PG_REPORT, " maximum alignment\n");
|
|
|
|
if (!got_blocksz)
|
|
pg_log(PG_REPORT, " block size\n");
|
|
|
|
if (!got_largesz)
|
|
pg_log(PG_REPORT, " large relation segment size\n");
|
|
|
|
if (!got_walsz)
|
|
pg_log(PG_REPORT, " WAL block size\n");
|
|
|
|
if (!got_walseg)
|
|
pg_log(PG_REPORT, " WAL segment size\n");
|
|
|
|
if (!got_ident)
|
|
pg_log(PG_REPORT, " maximum identifier length\n");
|
|
|
|
if (!got_index)
|
|
pg_log(PG_REPORT, " maximum number of indexed columns\n");
|
|
|
|
if (!got_toast)
|
|
pg_log(PG_REPORT, " maximum TOAST chunk size\n");
|
|
|
|
if (!got_large_object &&
|
|
cluster->controldata.ctrl_ver >= LARGE_OBJECT_SIZE_PG_CONTROL_VER)
|
|
pg_log(PG_REPORT, " large-object chunk size\n");
|
|
|
|
if (!got_date_is_int)
|
|
pg_log(PG_REPORT, " dates/times are integers?\n");
|
|
|
|
if (!got_float8_pass_by_value)
|
|
pg_log(PG_REPORT, " float8 argument passing method\n");
|
|
|
|
/* value added in Postgres 9.3 */
|
|
if (!got_data_checksum_version)
|
|
pg_log(PG_REPORT, " data checksum version\n");
|
|
|
|
pg_fatal("Cannot continue without required control information, terminating\n");
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* check_control_data()
|
|
*
|
|
* check to make sure the control data settings are compatible
|
|
*/
|
|
void
|
|
check_control_data(ControlData *oldctrl,
|
|
ControlData *newctrl)
|
|
{
|
|
if (oldctrl->align == 0 || oldctrl->align != newctrl->align)
|
|
pg_fatal("old and new pg_controldata alignments are invalid or do not match\n"
|
|
"Likely one cluster is a 32-bit install, the other 64-bit\n");
|
|
|
|
if (oldctrl->blocksz == 0 || oldctrl->blocksz != newctrl->blocksz)
|
|
pg_fatal("old and new pg_controldata block sizes are invalid or do not match\n");
|
|
|
|
if (oldctrl->largesz == 0 || oldctrl->largesz != newctrl->largesz)
|
|
pg_fatal("old and new pg_controldata maximum relation segement sizes are invalid or do not match\n");
|
|
|
|
if (oldctrl->walsz == 0 || oldctrl->walsz != newctrl->walsz)
|
|
pg_fatal("old and new pg_controldata WAL block sizes are invalid or do not match\n");
|
|
|
|
if (oldctrl->walseg == 0 || oldctrl->walseg != newctrl->walseg)
|
|
pg_fatal("old and new pg_controldata WAL segment sizes are invalid or do not match\n");
|
|
|
|
if (oldctrl->ident == 0 || oldctrl->ident != newctrl->ident)
|
|
pg_fatal("old and new pg_controldata maximum identifier lengths are invalid or do not match\n");
|
|
|
|
if (oldctrl->index == 0 || oldctrl->index != newctrl->index)
|
|
pg_fatal("old and new pg_controldata maximum indexed columns are invalid or do not match\n");
|
|
|
|
if (oldctrl->toast == 0 || oldctrl->toast != newctrl->toast)
|
|
pg_fatal("old and new pg_controldata maximum TOAST chunk sizes are invalid or do not match\n");
|
|
|
|
/* large_object added in 9.5, so it might not exist in the old cluster */
|
|
if (oldctrl->large_object != 0 &&
|
|
oldctrl->large_object != newctrl->large_object)
|
|
pg_fatal("old and new pg_controldata large-object chunk sizes are invalid or do not match\n");
|
|
|
|
if (oldctrl->date_is_int != newctrl->date_is_int)
|
|
pg_fatal("old and new pg_controldata date/time storage types do not match\n");
|
|
|
|
/*
|
|
* We might eventually allow upgrades from checksum to no-checksum
|
|
* clusters.
|
|
*/
|
|
if (oldctrl->data_checksum_version != newctrl->data_checksum_version)
|
|
{
|
|
pg_fatal("old and new pg_controldata checksum versions are invalid or do not match\n");
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
disable_old_cluster(void)
|
|
{
|
|
char old_path[MAXPGPATH],
|
|
new_path[MAXPGPATH];
|
|
|
|
/* rename pg_control so old server cannot be accidentally started */
|
|
prep_status("Adding \".old\" suffix to old global/pg_control");
|
|
|
|
snprintf(old_path, sizeof(old_path), "%s/global/pg_control", old_cluster.pgdata);
|
|
snprintf(new_path, sizeof(new_path), "%s/global/pg_control.old", old_cluster.pgdata);
|
|
if (pg_mv_file(old_path, new_path) != 0)
|
|
pg_fatal("Unable to rename %s to %s.\n", old_path, new_path);
|
|
check_ok();
|
|
|
|
pg_log(PG_REPORT, "\n"
|
|
"If you want to start the old cluster, you will need to remove\n"
|
|
"the \".old\" suffix from %s/global/pg_control.old.\n"
|
|
"Because \"link\" mode was used, the old cluster cannot be safely\n"
|
|
"started once the new cluster has been started.\n\n", old_cluster.pgdata);
|
|
}
|