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Add pg_upgrade to /contrib; will be in 9.0 beta2.

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Add documentation.

Supports migration from PG 8.3 and 8.4.
This commit is contained in:
Bruce Momjian
2010-05-12 02:19:11 +00:00
parent 28e1742217
commit c2e9b2f288
22 changed files with 6384 additions and 2 deletions
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90
contrib/pg_upgrade/version.c Normal file
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/*
* version.c
*
* Postgres-version-specific routines
*/
#include "pg_upgrade.h"
#include "access/transam.h"
/*
* new_9_0_populate_pg_largeobject_metadata()
* new >= 9.0, old <= 8.4
* 9.0 has a new pg_largeobject permission table
*/
void
new_9_0_populate_pg_largeobject_metadata(migratorContext *ctx, bool check_mode,
Cluster whichCluster)
{
ClusterInfo *active_cluster = (whichCluster == CLUSTER_OLD) ?
&ctx->old : &ctx->new;
int dbnum;
FILE *script = NULL;
bool found = false;
char output_path[MAXPGPATH];
prep_status(ctx, "Checking for large objects");
snprintf(output_path, sizeof(output_path), "%s/pg_largeobject.sql",
ctx->output_dir);
for (dbnum = 0; dbnum < active_cluster->dbarr.ndbs; dbnum++)
{
PGresult *res;
int i_count;
DbInfo *active_db = &active_cluster->dbarr.dbs[dbnum];
PGconn *conn = connectToServer(ctx, active_db->db_name, whichCluster);
/* find if there are any large objects */
res = executeQueryOrDie(ctx, conn,
"SELECT count(*) "
"FROM pg_catalog.pg_largeobject ");
i_count = PQfnumber(res, "count");
if (atoi(PQgetvalue(res, 0, i_count)) != 0)
{
found = true;
if (!check_mode)
{
if (script == NULL && (script = fopen(output_path, "w")) == NULL)
pg_log(ctx, PG_FATAL, "Could not create necessary file: %s\n", output_path);
fprintf(script, "\\connect %s\n",
quote_identifier(ctx, active_db->db_name));
fprintf(script,
"SELECT pg_catalog.lo_create(t.loid)\n"
"FROM (SELECT DISTINCT loid FROM pg_catalog.pg_largeobject) AS t;\n");
}
}
PQclear(res);
PQfinish(conn);
}
if (found)
{
if (!check_mode)
fclose(script);
report_status(ctx, PG_WARNING, "warning");
if (check_mode)
pg_log(ctx, PG_WARNING, "\n"
"| Your installation contains large objects.\n"
"| The new database has an additional large object\n"
"| permission table. After migration, you will be\n"
"| given a command to populate the pg_largeobject\n"
"| permission table with default permissions.\n\n");
else
pg_log(ctx, PG_WARNING, "\n"
"| Your installation contains large objects.\n"
"| The new database has an additional large object\n"
"| permission table so default permissions must be\n"
"| defined for all large objects. The file:\n"
"| \t%s\n"
"| when executed by psql by the database super-user\n"
"| will define the default permissions.\n\n",
output_path);
}
else
check_ok(ctx);
}