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In pg_upgrade, disallow migration of 8.3 clusters using contrib/ltree

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because its internal format was changed in 8.4.

Backpatch to 9.0 and 9.1.

Report by depesz, diagnosis by Tom.
This commit is contained in:
Bruce Momjian
2011-09-07 14:42:34 -04:00
parent 99155aaa33
commit 3ced32d24e
4 changed files with 88 additions and 0 deletions
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81
contrib/pg_upgrade/version_old_8_3.c
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@ -201,6 +201,87 @@ old_8_3_check_for_tsquery_usage(ClusterInfo *cluster)
}
/*
* old_8_3_check_ltree_usage()
* 8.3 -> 8.4
* The internal ltree structure was changed in 8.4 so upgrading is impossible.
*/
void
old_8_3_check_ltree_usage(ClusterInfo *cluster)
{
int dbnum;
FILE *script = NULL;
bool found = false;
char output_path[MAXPGPATH];
prep_status("Checking for contrib/ltree");
snprintf(output_path, sizeof(output_path), "%s/contrib_ltree.txt",
os_info.cwd);
for (dbnum = 0; dbnum < cluster->dbarr.ndbs; dbnum++)
{
PGresult *res;
bool db_used = false;
int ntups;
int rowno;
int i_nspname,
i_proname;
DbInfo *active_db = &cluster->dbarr.dbs[dbnum];
PGconn *conn = connectToServer(cluster, active_db->db_name);
/* Find any functions coming from contrib/ltree */
res = executeQueryOrDie(conn,
"SELECT n.nspname, p.proname "
"FROM pg_catalog.pg_proc p, "
" pg_catalog.pg_namespace n "
"WHERE p.pronamespace = n.oid AND "
" p.probin = '$libdir/ltree'");
ntups = PQntuples(res);
i_nspname = PQfnumber(res, "nspname");
i_proname = PQfnumber(res, "proname");
for (rowno = 0; rowno < ntups; rowno++)
{
found = true;
if (script == NULL && (script = fopen(output_path, "w")) == NULL)
pg_log(PG_FATAL, "Could not open file \"%s\": %s\n",
output_path, getErrorText(errno));
if (!db_used)
{
fprintf(script, "Database: %s\n", active_db->db_name);
db_used = true;
}
fprintf(script, " %s.%s\n",
PQgetvalue(res, rowno, i_nspname),
PQgetvalue(res, rowno, i_proname));
}
PQclear(res);
PQfinish(conn);
}
if (script)
fclose(script);
if (found)
{
pg_log(PG_REPORT, "fatal\n");
pg_log(PG_FATAL,
"Your installation contains the \"ltree\" data type. This data type\n"
"changed its internal storage format between your old and new clusters so this\n"
"cluster cannot currently be upgraded. You can manually upgrade databases\n"
"that use \"contrib/ltree\" facilities and remove \"contrib/ltree\" from the old\n"
"cluster and restart the upgrade. A list of the problem functions is in the\n"
"file:\n"
" %s\n\n", output_path);
}
else
check_ok();
}
/*
* old_8_3_rebuild_tsvector_tables()
* 8.3 -> 8.4