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-rw-r--r--src/bin/pg_upgrade/controldata.c733
1 files changed, 733 insertions, 0 deletions
diff --git a/src/bin/pg_upgrade/controldata.c b/src/bin/pg_upgrade/controldata.c
new file mode 100644
index 0000000..9071a6f
--- /dev/null
+++ b/src/bin/pg_upgrade/controldata.c
@@ -0,0 +1,733 @@
+/*
+ * controldata.c
+ *
+ * controldata functions
+ *
+ * Copyright (c) 2010-2023, PostgreSQL Global Development Group
+ * src/bin/pg_upgrade/controldata.c
+ */
+
+#include "postgres_fe.h"
+
+#include <ctype.h>
+
+#include "pg_upgrade.h"
+#include "common/string.h"
+
+
+/*
+ * get_control_data()
+ *
+ * gets pg_control information in "ctrl". Assumes that bindir and
+ * datadir are valid absolute paths to postgresql bin and pgdata
+ * directories respectively *and* pg_resetwal is version compatible
+ * with datadir. The main purpose of this function is to get pg_control
+ * data in a version independent manner.
+ *
+ * The approach taken here is to invoke pg_resetwal with -n option
+ * and then pipe its output. With little string parsing we get the
+ * pg_control data. pg_resetwal cannot be run while the server is running
+ * so we use pg_controldata; pg_controldata doesn't provide all the fields
+ * we need to actually perform the upgrade, but it provides enough for
+ * check mode. We do not implement pg_resetwal -n because it is hard to
+ * return valid xid data for a running server.
+ */
+void
+get_control_data(ClusterInfo *cluster, bool live_check)
+{
+ char cmd[MAXPGPATH];
+ char bufin[MAX_STRING];
+ FILE *output;
+ char *p;
+ bool got_tli = false;
+ bool got_log_id = false;
+ bool got_log_seg = false;
+ bool got_xid = false;
+ bool got_oid = false;
+ bool got_multi = false;
+ bool got_oldestmulti = false;
+ bool got_oldestxid = false;
+ bool got_mxoff = false;
+ bool got_nextxlogfile = false;
+ bool got_float8_pass_by_value = false;
+ bool got_align = false;
+ bool got_blocksz = false;
+ bool got_largesz = false;
+ bool got_walsz = false;
+ bool got_walseg = false;
+ bool got_ident = false;
+ bool got_index = false;
+ bool got_toast = false;
+ bool got_large_object = false;
+ bool got_date_is_int = false;
+ bool got_data_checksum_version = false;
+ bool got_cluster_state = false;
+ char *lc_collate = NULL;
+ char *lc_ctype = NULL;
+ char *lc_monetary = NULL;
+ char *lc_numeric = NULL;
+ char *lc_time = NULL;
+ char *lang = NULL;
+ char *language = NULL;
+ char *lc_all = NULL;
+ char *lc_messages = NULL;
+ uint32 tli = 0;
+ uint32 logid = 0;
+ uint32 segno = 0;
+ char *resetwal_bin;
+ int rc;
+
+ /*
+ * Because we test the pg_resetwal output as strings, it has to be in
+ * English. Copied from pg_regress.c.
+ */
+ if (getenv("LC_COLLATE"))
+ lc_collate = pg_strdup(getenv("LC_COLLATE"));
+ if (getenv("LC_CTYPE"))
+ lc_ctype = pg_strdup(getenv("LC_CTYPE"));
+ if (getenv("LC_MONETARY"))
+ lc_monetary = pg_strdup(getenv("LC_MONETARY"));
+ if (getenv("LC_NUMERIC"))
+ lc_numeric = pg_strdup(getenv("LC_NUMERIC"));
+ if (getenv("LC_TIME"))
+ lc_time = pg_strdup(getenv("LC_TIME"));
+ if (getenv("LANG"))
+ lang = pg_strdup(getenv("LANG"));
+ if (getenv("LANGUAGE"))
+ language = pg_strdup(getenv("LANGUAGE"));
+ if (getenv("LC_ALL"))
+ lc_all = pg_strdup(getenv("LC_ALL"));
+ if (getenv("LC_MESSAGES"))
+ lc_messages = pg_strdup(getenv("LC_MESSAGES"));
+
+ unsetenv("LC_COLLATE");
+ unsetenv("LC_CTYPE");
+ unsetenv("LC_MONETARY");
+ unsetenv("LC_NUMERIC");
+ unsetenv("LC_TIME");
+#ifndef WIN32
+ unsetenv("LANG");
+#else
+ /* On Windows the default locale may not be English, so force it */
+ setenv("LANG", "en", 1);
+#endif
+ unsetenv("LANGUAGE");
+ unsetenv("LC_ALL");
+ setenv("LC_MESSAGES", "C", 1);
+
+ /*
+ * Check for clean shutdown
+ */
+ if (!live_check || cluster == &new_cluster)
+ {
+ /* only pg_controldata outputs the cluster state */
+ snprintf(cmd, sizeof(cmd), "\"%s/pg_controldata\" \"%s\"",
+ cluster->bindir, cluster->pgdata);
+ fflush(NULL);
+
+ if ((output = popen(cmd, "r")) == NULL)
+ pg_fatal("could not get control data using %s: %s",
+ cmd, strerror(errno));
+
+ /* we have the result of cmd in "output". so parse it line by line now */
+ while (fgets(bufin, sizeof(bufin), output))
+ {
+ if ((p = strstr(bufin, "Database cluster state:")) != NULL)
+ {
+ p = strchr(p, ':');
+
+ if (p == NULL || strlen(p) <= 1)
+ pg_fatal("%d: database cluster state problem", __LINE__);
+
+ p++; /* remove ':' char */
+
+ /*
+ * We checked earlier for a postmaster lock file, and if we
+ * found one, we tried to start/stop the server to replay the
+ * WAL. However, pg_ctl -m immediate doesn't leave a lock
+ * file, but does require WAL replay, so we check here that
+ * the server was shut down cleanly, from the controldata
+ * perspective.
+ */
+ /* remove leading spaces */
+ while (*p == ' ')
+ p++;
+ if (strcmp(p, "shut down in recovery\n") == 0)
+ {
+ if (cluster == &old_cluster)
+ pg_fatal("The source cluster was shut down while in recovery mode. To upgrade, use \"rsync\" as documented or shut it down as a primary.");
+ else
+ pg_fatal("The target cluster was shut down while in recovery mode. To upgrade, use \"rsync\" as documented or shut it down as a primary.");
+ }
+ else if (strcmp(p, "shut down\n") != 0)
+ {
+ if (cluster == &old_cluster)
+ pg_fatal("The source cluster was not shut down cleanly.");
+ else
+ pg_fatal("The target cluster was not shut down cleanly.");
+ }
+ got_cluster_state = true;
+ }
+ }
+
+ rc = pclose(output);
+ if (rc != 0)
+ pg_fatal("could not get control data using %s: %s",
+ cmd, wait_result_to_str(rc));
+
+ if (!got_cluster_state)
+ {
+ if (cluster == &old_cluster)
+ pg_fatal("The source cluster lacks cluster state information:");
+ else
+ pg_fatal("The target cluster lacks cluster state information:");
+ }
+ }
+
+ /* pg_resetxlog has been renamed to pg_resetwal in version 10 */
+ if (GET_MAJOR_VERSION(cluster->bin_version) <= 906)
+ resetwal_bin = "pg_resetxlog\" -n";
+ else
+ resetwal_bin = "pg_resetwal\" -n";
+ snprintf(cmd, sizeof(cmd), "\"%s/%s \"%s\"",
+ cluster->bindir,
+ live_check ? "pg_controldata\"" : resetwal_bin,
+ cluster->pgdata);
+ fflush(NULL);
+
+ if ((output = popen(cmd, "r")) == NULL)
+ pg_fatal("could not get control data using %s: %s",
+ cmd, strerror(errno));
+
+ /* Only in <= 9.2 */
+ if (GET_MAJOR_VERSION(cluster->major_version) <= 902)
+ {
+ cluster->controldata.data_checksum_version = 0;
+ got_data_checksum_version = true;
+ }
+
+ /* we have the result of cmd in "output". so parse it line by line now */
+ while (fgets(bufin, sizeof(bufin), output))
+ {
+ /* In verbose mode, log each line */
+ pg_strip_crlf(bufin);
+ pg_log(PG_VERBOSE, "%s", bufin);
+
+ if ((p = strstr(bufin, "pg_control version number:")) != NULL)
+ {
+ p = strchr(p, ':');
+
+ if (p == NULL || strlen(p) <= 1)
+ pg_fatal("%d: pg_resetwal problem", __LINE__);
+
+ p++; /* remove ':' char */
+ cluster->controldata.ctrl_ver = str2uint(p);
+ }
+ else if ((p = strstr(bufin, "Catalog version number:")) != NULL)
+ {
+ p = strchr(p, ':');
+
+ if (p == NULL || strlen(p) <= 1)
+ pg_fatal("%d: controldata retrieval problem", __LINE__);
+
+ p++; /* remove ':' char */
+ cluster->controldata.cat_ver = str2uint(p);
+ }
+ else if ((p = strstr(bufin, "Latest checkpoint's TimeLineID:")) != NULL)
+ {
+ p = strchr(p, ':');
+
+ if (p == NULL || strlen(p) <= 1)
+ pg_fatal("%d: controldata retrieval problem", __LINE__);
+
+ p++; /* remove ':' char */
+ tli = str2uint(p);
+ got_tli = true;
+ }
+ else if ((p = strstr(bufin, "First log file ID after reset:")) != NULL)
+ {
+ p = strchr(p, ':');
+
+ if (p == NULL || strlen(p) <= 1)
+ pg_fatal("%d: controldata retrieval problem", __LINE__);
+
+ p++; /* remove ':' char */
+ logid = str2uint(p);
+ got_log_id = true;
+ }
+ else if ((p = strstr(bufin, "First log file segment after reset:")) != NULL)
+ {
+ p = strchr(p, ':');
+
+ if (p == NULL || strlen(p) <= 1)
+ pg_fatal("%d: controldata retrieval problem", __LINE__);
+
+ p++; /* remove ':' char */
+ segno = str2uint(p);
+ got_log_seg = true;
+ }
+ else if ((p = strstr(bufin, "Latest checkpoint's NextXID:")) != NULL)
+ {
+ p = strchr(p, ':');
+
+ if (p == NULL || strlen(p) <= 1)
+ pg_fatal("%d: controldata retrieval problem", __LINE__);
+
+ p++; /* remove ':' char */
+ cluster->controldata.chkpnt_nxtepoch = str2uint(p);
+
+ /*
+ * Delimiter changed from '/' to ':' in 9.6. We don't test for
+ * the catalog version of the change because the catalog version
+ * is pulled from pg_controldata too, and it isn't worth adding an
+ * order dependency for this --- we just check the string.
+ */
+ if (strchr(p, '/') != NULL)
+ p = strchr(p, '/');
+ else if (GET_MAJOR_VERSION(cluster->major_version) >= 906)
+ p = strchr(p, ':');
+ else
+ p = NULL;
+
+ if (p == NULL || strlen(p) <= 1)
+ pg_fatal("%d: controldata retrieval problem", __LINE__);
+
+ p++; /* remove '/' or ':' char */
+ cluster->controldata.chkpnt_nxtxid = str2uint(p);
+ got_xid = true;
+ }
+ else if ((p = strstr(bufin, "Latest checkpoint's NextOID:")) != NULL)
+ {
+ p = strchr(p, ':');
+
+ if (p == NULL || strlen(p) <= 1)
+ pg_fatal("%d: controldata retrieval problem", __LINE__);
+
+ p++; /* remove ':' char */
+ cluster->controldata.chkpnt_nxtoid = str2uint(p);
+ got_oid = true;
+ }
+ else if ((p = strstr(bufin, "Latest checkpoint's NextMultiXactId:")) != NULL)
+ {
+ p = strchr(p, ':');
+
+ if (p == NULL || strlen(p) <= 1)
+ pg_fatal("%d: controldata retrieval problem", __LINE__);
+
+ p++; /* remove ':' char */
+ cluster->controldata.chkpnt_nxtmulti = str2uint(p);
+ got_multi = true;
+ }
+ else if ((p = strstr(bufin, "Latest checkpoint's oldestXID:")) != NULL)
+ {
+ p = strchr(p, ':');
+
+ if (p == NULL || strlen(p) <= 1)
+ pg_fatal("%d: controldata retrieval problem", __LINE__);
+
+ p++; /* remove ':' char */
+ cluster->controldata.chkpnt_oldstxid = str2uint(p);
+ got_oldestxid = true;
+ }
+ else if ((p = strstr(bufin, "Latest checkpoint's oldestMultiXid:")) != NULL)
+ {
+ p = strchr(p, ':');
+
+ if (p == NULL || strlen(p) <= 1)
+ pg_fatal("%d: controldata retrieval problem", __LINE__);
+
+ p++; /* remove ':' char */
+ cluster->controldata.chkpnt_oldstMulti = str2uint(p);
+ got_oldestmulti = true;
+ }
+ else if ((p = strstr(bufin, "Latest checkpoint's NextMultiOffset:")) != NULL)
+ {
+ p = strchr(p, ':');
+
+ if (p == NULL || strlen(p) <= 1)
+ pg_fatal("%d: controldata retrieval problem", __LINE__);
+
+ p++; /* remove ':' char */
+ cluster->controldata.chkpnt_nxtmxoff = str2uint(p);
+ got_mxoff = true;
+ }
+ else if ((p = strstr(bufin, "First log segment after reset:")) != NULL)
+ {
+ /* Skip the colon and any whitespace after it */
+ p = strchr(p, ':');
+ if (p == NULL || strlen(p) <= 1)
+ pg_fatal("%d: controldata retrieval problem", __LINE__);
+ p = strpbrk(p, "01234567890ABCDEF");
+ if (p == NULL || strlen(p) <= 1)
+ pg_fatal("%d: controldata retrieval problem", __LINE__);
+
+ /* Make sure it looks like a valid WAL file name */
+ if (strspn(p, "0123456789ABCDEF") != 24)
+ pg_fatal("%d: controldata retrieval problem", __LINE__);
+
+ strlcpy(cluster->controldata.nextxlogfile, p, 25);
+ got_nextxlogfile = true;
+ }
+ else if ((p = strstr(bufin, "Float8 argument passing:")) != NULL)
+ {
+ p = strchr(p, ':');
+
+ if (p == NULL || strlen(p) <= 1)
+ pg_fatal("%d: controldata retrieval problem", __LINE__);
+
+ p++; /* remove ':' char */
+ /* used later for contrib check */
+ cluster->controldata.float8_pass_by_value = strstr(p, "by value") != NULL;
+ got_float8_pass_by_value = true;
+ }
+ else if ((p = strstr(bufin, "Maximum data alignment:")) != NULL)
+ {
+ p = strchr(p, ':');
+
+ if (p == NULL || strlen(p) <= 1)
+ pg_fatal("%d: controldata retrieval problem", __LINE__);
+
+ p++; /* remove ':' char */
+ cluster->controldata.align = str2uint(p);
+ got_align = true;
+ }
+ else if ((p = strstr(bufin, "Database block size:")) != NULL)
+ {
+ p = strchr(p, ':');
+
+ if (p == NULL || strlen(p) <= 1)
+ pg_fatal("%d: controldata retrieval problem", __LINE__);
+
+ p++; /* remove ':' char */
+ cluster->controldata.blocksz = str2uint(p);
+ got_blocksz = true;
+ }
+ else if ((p = strstr(bufin, "Blocks per segment of large relation:")) != NULL)
+ {
+ p = strchr(p, ':');
+
+ if (p == NULL || strlen(p) <= 1)
+ pg_fatal("%d: controldata retrieval problem", __LINE__);
+
+ p++; /* remove ':' char */
+ cluster->controldata.largesz = str2uint(p);
+ got_largesz = true;
+ }
+ else if ((p = strstr(bufin, "WAL block size:")) != NULL)
+ {
+ p = strchr(p, ':');
+
+ if (p == NULL || strlen(p) <= 1)
+ pg_fatal("%d: controldata retrieval problem", __LINE__);
+
+ p++; /* remove ':' char */
+ cluster->controldata.walsz = str2uint(p);
+ got_walsz = true;
+ }
+ else if ((p = strstr(bufin, "Bytes per WAL segment:")) != NULL)
+ {
+ p = strchr(p, ':');
+
+ if (p == NULL || strlen(p) <= 1)
+ pg_fatal("%d: controldata retrieval problem", __LINE__);
+
+ p++; /* remove ':' char */
+ cluster->controldata.walseg = str2uint(p);
+ got_walseg = true;
+ }
+ else if ((p = strstr(bufin, "Maximum length of identifiers:")) != NULL)
+ {
+ p = strchr(p, ':');
+
+ if (p == NULL || strlen(p) <= 1)
+ pg_fatal("%d: controldata retrieval problem", __LINE__);
+
+ p++; /* remove ':' char */
+ cluster->controldata.ident = str2uint(p);
+ got_ident = true;
+ }
+ else if ((p = strstr(bufin, "Maximum columns in an index:")) != NULL)
+ {
+ p = strchr(p, ':');
+
+ if (p == NULL || strlen(p) <= 1)
+ pg_fatal("%d: controldata retrieval problem", __LINE__);
+
+ p++; /* remove ':' char */
+ cluster->controldata.index = str2uint(p);
+ got_index = true;
+ }
+ else if ((p = strstr(bufin, "Maximum size of a TOAST chunk:")) != NULL)
+ {
+ p = strchr(p, ':');
+
+ if (p == NULL || strlen(p) <= 1)
+ pg_fatal("%d: controldata retrieval problem", __LINE__);
+
+ p++; /* remove ':' char */
+ cluster->controldata.toast = str2uint(p);
+ got_toast = true;
+ }
+ else if ((p = strstr(bufin, "Size of a large-object chunk:")) != NULL)
+ {
+ p = strchr(p, ':');
+
+ if (p == NULL || strlen(p) <= 1)
+ pg_fatal("%d: controldata retrieval problem", __LINE__);
+
+ p++; /* remove ':' char */
+ cluster->controldata.large_object = str2uint(p);
+ got_large_object = true;
+ }
+ else if ((p = strstr(bufin, "Date/time type storage:")) != NULL)
+ {
+ p = strchr(p, ':');
+
+ if (p == NULL || strlen(p) <= 1)
+ pg_fatal("%d: controldata retrieval problem", __LINE__);
+
+ p++; /* remove ':' char */
+ cluster->controldata.date_is_int = strstr(p, "64-bit integers") != NULL;
+ got_date_is_int = true;
+ }
+ else if ((p = strstr(bufin, "checksum")) != NULL)
+ {
+ p = strchr(p, ':');
+
+ if (p == NULL || strlen(p) <= 1)
+ pg_fatal("%d: controldata retrieval problem", __LINE__);
+
+ p++; /* remove ':' char */
+ cluster->controldata.data_checksum_version = str2uint(p);
+ got_data_checksum_version = true;
+ }
+ }
+
+ rc = pclose(output);
+ if (rc != 0)
+ pg_fatal("could not get control data using %s: %s",
+ cmd, wait_result_to_str(rc));
+
+ /*
+ * Restore environment variables. Note all but LANG and LC_MESSAGES were
+ * unset above.
+ */
+ if (lc_collate)
+ setenv("LC_COLLATE", lc_collate, 1);
+ if (lc_ctype)
+ setenv("LC_CTYPE", lc_ctype, 1);
+ if (lc_monetary)
+ setenv("LC_MONETARY", lc_monetary, 1);
+ if (lc_numeric)
+ setenv("LC_NUMERIC", lc_numeric, 1);
+ if (lc_time)
+ setenv("LC_TIME", lc_time, 1);
+ if (lang)
+ setenv("LANG", lang, 1);
+ else
+ unsetenv("LANG");
+ if (language)
+ setenv("LANGUAGE", language, 1);
+ if (lc_all)
+ setenv("LC_ALL", lc_all, 1);
+ if (lc_messages)
+ setenv("LC_MESSAGES", lc_messages, 1);
+ else
+ unsetenv("LC_MESSAGES");
+
+ pg_free(lc_collate);
+ pg_free(lc_ctype);
+ pg_free(lc_monetary);
+ pg_free(lc_numeric);
+ pg_free(lc_time);
+ pg_free(lang);
+ pg_free(language);
+ pg_free(lc_all);
+ pg_free(lc_messages);
+
+ /*
+ * Before 9.3, pg_resetwal reported the xlogid and segno of the first log
+ * file after reset as separate lines. Starting with 9.3, it reports the
+ * WAL file name. If the old cluster is older than 9.3, we construct the
+ * WAL file name from the xlogid and segno.
+ */
+ if (GET_MAJOR_VERSION(cluster->major_version) <= 902)
+ {
+ if (got_tli && got_log_id && got_log_seg)
+ {
+ snprintf(cluster->controldata.nextxlogfile, 25, "%08X%08X%08X",
+ tli, logid, segno);
+ got_nextxlogfile = true;
+ }
+ }
+
+ /* verify that we got all the mandatory pg_control data */
+ if (!got_xid || !got_oid ||
+ !got_multi || !got_oldestxid ||
+ (!got_oldestmulti &&
+ cluster->controldata.cat_ver >= MULTIXACT_FORMATCHANGE_CAT_VER) ||
+ !got_mxoff || (!live_check && !got_nextxlogfile) ||
+ !got_float8_pass_by_value || !got_align || !got_blocksz ||
+ !got_largesz || !got_walsz || !got_walseg || !got_ident ||
+ !got_index || !got_toast ||
+ (!got_large_object &&
+ cluster->controldata.ctrl_ver >= LARGE_OBJECT_SIZE_PG_CONTROL_VER) ||
+ !got_date_is_int || !got_data_checksum_version)
+ {
+ if (cluster == &old_cluster)
+ pg_log(PG_REPORT,
+ "The source cluster lacks some required control information:");
+ else
+ pg_log(PG_REPORT,
+ "The target cluster lacks some required control information:");
+
+ if (!got_xid)
+ pg_log(PG_REPORT, " checkpoint next XID");
+
+ if (!got_oid)
+ pg_log(PG_REPORT, " latest checkpoint next OID");
+
+ if (!got_multi)
+ pg_log(PG_REPORT, " latest checkpoint next MultiXactId");
+
+ if (!got_oldestmulti &&
+ cluster->controldata.cat_ver >= MULTIXACT_FORMATCHANGE_CAT_VER)
+ pg_log(PG_REPORT, " latest checkpoint oldest MultiXactId");
+
+ if (!got_oldestxid)
+ pg_log(PG_REPORT, " latest checkpoint oldestXID");
+
+ if (!got_mxoff)
+ pg_log(PG_REPORT, " latest checkpoint next MultiXactOffset");
+
+ if (!live_check && !got_nextxlogfile)
+ pg_log(PG_REPORT, " first WAL segment after reset");
+
+ if (!got_float8_pass_by_value)
+ pg_log(PG_REPORT, " float8 argument passing method");
+
+ if (!got_align)
+ pg_log(PG_REPORT, " maximum alignment");
+
+ if (!got_blocksz)
+ pg_log(PG_REPORT, " block size");
+
+ if (!got_largesz)
+ pg_log(PG_REPORT, " large relation segment size");
+
+ if (!got_walsz)
+ pg_log(PG_REPORT, " WAL block size");
+
+ if (!got_walseg)
+ pg_log(PG_REPORT, " WAL segment size");
+
+ if (!got_ident)
+ pg_log(PG_REPORT, " maximum identifier length");
+
+ if (!got_index)
+ pg_log(PG_REPORT, " maximum number of indexed columns");
+
+ if (!got_toast)
+ pg_log(PG_REPORT, " maximum TOAST chunk size");
+
+ if (!got_large_object &&
+ cluster->controldata.ctrl_ver >= LARGE_OBJECT_SIZE_PG_CONTROL_VER)
+ pg_log(PG_REPORT, " large-object chunk size");
+
+ if (!got_date_is_int)
+ pg_log(PG_REPORT, " dates/times are integers?");
+
+ /* value added in Postgres 9.3 */
+ if (!got_data_checksum_version)
+ pg_log(PG_REPORT, " data checksum version");
+
+ pg_fatal("Cannot continue without required control information, terminating");
+ }
+}
+
+
+/*
+ * 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");
+
+ if (oldctrl->blocksz == 0 || oldctrl->blocksz != newctrl->blocksz)
+ pg_fatal("old and new pg_controldata block sizes are invalid or do not match");
+
+ if (oldctrl->largesz == 0 || oldctrl->largesz != newctrl->largesz)
+ pg_fatal("old and new pg_controldata maximum relation segment sizes are invalid or do not match");
+
+ if (oldctrl->walsz == 0 || oldctrl->walsz != newctrl->walsz)
+ pg_fatal("old and new pg_controldata WAL block sizes are invalid or do not match");
+
+ if (oldctrl->walseg == 0 || oldctrl->walseg != newctrl->walseg)
+ pg_fatal("old and new pg_controldata WAL segment sizes are invalid or do not match");
+
+ if (oldctrl->ident == 0 || oldctrl->ident != newctrl->ident)
+ pg_fatal("old and new pg_controldata maximum identifier lengths are invalid or do not match");
+
+ if (oldctrl->index == 0 || oldctrl->index != newctrl->index)
+ pg_fatal("old and new pg_controldata maximum indexed columns are invalid or do not match");
+
+ 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");
+
+ /* 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");
+
+ if (oldctrl->date_is_int != newctrl->date_is_int)
+ pg_fatal("old and new pg_controldata date/time storage types do not match");
+
+ /*
+ * float8_pass_by_value does not need to match, but is used in
+ * check_for_isn_and_int8_passing_mismatch().
+ */
+
+ /*
+ * We might eventually allow upgrades from checksum to no-checksum
+ * clusters.
+ */
+ if (oldctrl->data_checksum_version == 0 &&
+ newctrl->data_checksum_version != 0)
+ pg_fatal("old cluster does not use data checksums but the new one does");
+ else if (oldctrl->data_checksum_version != 0 &&
+ newctrl->data_checksum_version == 0)
+ pg_fatal("old cluster uses data checksums but the new one does not");
+ else if (oldctrl->data_checksum_version != newctrl->data_checksum_version)
+ pg_fatal("old and new cluster pg_controldata checksum versions do not match");
+}
+
+
+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("could not rename file \"%s\" to \"%s\": %m",
+ 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.",
+ old_cluster.pgdata);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-28 21:48:31 +0000