mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-08-23 03:00:41 +02:00
140 lines
4.1 KiB
C
140 lines
4.1 KiB
C
/*
|
|
* dump.c
|
|
*
|
|
* dump functions
|
|
*
|
|
* Copyright (c) 2010-2014, PostgreSQL Global Development Group
|
|
* contrib/pg_upgrade/dump.c
|
|
*/
|
|
|
|
#include "postgres_fe.h"
|
|
|
|
#include "pg_upgrade.h"
|
|
|
|
#include <sys/types.h>
|
|
#include "catalog/binary_upgrade.h"
|
|
|
|
|
|
void
|
|
generate_old_dump(void)
|
|
{
|
|
int dbnum;
|
|
mode_t old_umask;
|
|
|
|
prep_status("Creating dump of global objects");
|
|
|
|
/* run new pg_dumpall binary for globals */
|
|
exec_prog(UTILITY_LOG_FILE, NULL, true,
|
|
"\"%s/pg_dumpall\" %s --globals-only --quote-all-identifiers "
|
|
"--binary-upgrade %s -f %s",
|
|
new_cluster.bindir, cluster_conn_opts(&old_cluster),
|
|
log_opts.verbose ? "--verbose" : "",
|
|
GLOBALS_DUMP_FILE);
|
|
check_ok();
|
|
|
|
prep_status("Creating dump of database schemas\n");
|
|
|
|
/*
|
|
* Set umask for this function, all functions it calls, and all
|
|
* subprocesses/threads it creates. We can't use fopen_priv() as Windows
|
|
* uses threads and umask is process-global.
|
|
*/
|
|
old_umask = umask(S_IRWXG | S_IRWXO);
|
|
|
|
/* create per-db dump files */
|
|
for (dbnum = 0; dbnum < old_cluster.dbarr.ndbs; dbnum++)
|
|
{
|
|
char sql_file_name[MAXPGPATH],
|
|
log_file_name[MAXPGPATH];
|
|
DbInfo *old_db = &old_cluster.dbarr.dbs[dbnum];
|
|
|
|
pg_log(PG_STATUS, "%s", old_db->db_name);
|
|
snprintf(sql_file_name, sizeof(sql_file_name), DB_DUMP_FILE_MASK, old_db->db_oid);
|
|
snprintf(log_file_name, sizeof(log_file_name), DB_DUMP_LOG_FILE_MASK, old_db->db_oid);
|
|
|
|
parallel_exec_prog(log_file_name, NULL,
|
|
"\"%s/pg_dump\" %s --schema-only --quote-all-identifiers "
|
|
"--binary-upgrade --format=custom %s --file=\"%s\" \"%s\"",
|
|
new_cluster.bindir, cluster_conn_opts(&old_cluster),
|
|
log_opts.verbose ? "--verbose" : "",
|
|
sql_file_name, old_db->db_name);
|
|
}
|
|
|
|
/* reap all children */
|
|
while (reap_child(true) == true)
|
|
;
|
|
|
|
umask(old_umask);
|
|
|
|
end_progress_output();
|
|
check_ok();
|
|
}
|
|
|
|
|
|
/*
|
|
* It is possible for there to be a mismatch in the need for TOAST tables
|
|
* between the old and new servers, e.g. some pre-9.1 tables didn't need
|
|
* TOAST tables but will need them in 9.1+. (There are also opposite cases,
|
|
* but these are handled by setting binary_upgrade_next_toast_pg_class_oid.)
|
|
*
|
|
* We can't allow the TOAST table to be created by pg_dump with a
|
|
* pg_dump-assigned oid because it might conflict with a later table that
|
|
* uses that oid, causing a "file exists" error for pg_class conflicts, and
|
|
* a "duplicate oid" error for pg_type conflicts. (TOAST tables need pg_type
|
|
* entries.)
|
|
*
|
|
* Therefore, a backend in binary-upgrade mode will not create a TOAST
|
|
* table unless an OID as passed in via pg_upgrade_support functions.
|
|
* This function is called after the restore and uses ALTER TABLE to
|
|
* auto-create any needed TOAST tables which will not conflict with
|
|
* restored oids.
|
|
*/
|
|
void
|
|
optionally_create_toast_tables(void)
|
|
{
|
|
int dbnum;
|
|
|
|
prep_status("Creating newly-required TOAST tables");
|
|
|
|
for (dbnum = 0; dbnum < new_cluster.dbarr.ndbs; dbnum++)
|
|
{
|
|
PGresult *res;
|
|
int ntups;
|
|
int rowno;
|
|
int i_nspname,
|
|
i_relname;
|
|
DbInfo *active_db = &new_cluster.dbarr.dbs[dbnum];
|
|
PGconn *conn = connectToServer(&new_cluster, active_db->db_name);
|
|
|
|
res = executeQueryOrDie(conn,
|
|
"SELECT n.nspname, c.relname "
|
|
"FROM pg_catalog.pg_class c, "
|
|
" pg_catalog.pg_namespace n "
|
|
"WHERE c.relnamespace = n.oid AND "
|
|
" n.nspname NOT IN ('pg_catalog', 'information_schema') AND "
|
|
"c.relkind IN ('r', 'm') AND "
|
|
"c.reltoastrelid = 0");
|
|
|
|
ntups = PQntuples(res);
|
|
i_nspname = PQfnumber(res, "nspname");
|
|
i_relname = PQfnumber(res, "relname");
|
|
for (rowno = 0; rowno < ntups; rowno++)
|
|
{
|
|
/* enable auto-oid-numbered TOAST creation if needed */
|
|
PQclear(executeQueryOrDie(conn, "SELECT binary_upgrade.set_next_toast_pg_class_oid('%d'::pg_catalog.oid);",
|
|
OPTIONALLY_CREATE_TOAST_OID));
|
|
|
|
/* dummy command that also triggers check for required TOAST table */
|
|
PQclear(executeQueryOrDie(conn, "ALTER TABLE %s.%s RESET (binary_upgrade_dummy_option);",
|
|
quote_identifier(PQgetvalue(res, rowno, i_nspname)),
|
|
quote_identifier(PQgetvalue(res, rowno, i_relname))));
|
|
}
|
|
|
|
PQclear(res);
|
|
|
|
PQfinish(conn);
|
|
}
|
|
|
|
check_ok();
|
|
}
|