On Fri, Dec 7, 2012 at 11:57:34AM -0500, Bruce Momjian wrote:
> On Fri, Dec 7, 2012 at 11:46:51AM -0500, Tom Lane wrote:
> > Bruce Momjian <[email protected]> writes:
> > > On Fri, Dec 7, 2012 at 10:29:22AM -0500, Tom Lane wrote:
> > >> On balance I am coming around to support the "just throw an error if
> > >> there are any invalid indexes" position. Adding extra complication in
> > >> pg_dump and pg_upgrade to handle ignoring them doesn't seem like a good
> > >> idea --- for one thing, it will evidently weaken the strength of the
> > >> same-number-of-relations cross-check.
> >
> > > The check would remain the same --- the change would be to prevent
> > > invalid indexes from being considered on both the old and new servers.
> >
> > But that weakens the check. For instance, if you had seven invalid
> > indexes in one cluster and eight in the other, you wouldn't notice.
>
> That is true, though the assumption is that invalid indexes are
> insignficant. It would be a new case where actual non-system-table
> _files_ were not transfered.
>
> Seems most people want the error so I will start working on a patch.
Patch attached.
--
Bruce Momjian <[email protected]> http://momjian.us
EnterpriseDB http://enterprisedb.com
+ It's impossible for everything to be true. +
diff --git a/contrib/pg_upgrade/check.c b/contrib/pg_upgrade/check.c
new file mode 100644
index bccceb1..832f22a
*** a/contrib/pg_upgrade/check.c
--- b/contrib/pg_upgrade/check.c
*************** static void check_is_super_user(ClusterI
*** 20,25 ****
--- 20,26 ----
static void check_for_prepared_transactions(ClusterInfo *cluster);
static void check_for_isn_and_int8_passing_mismatch(ClusterInfo *cluster);
static void check_for_reg_data_type_usage(ClusterInfo *cluster);
+ static void check_for_invalid_indexes(ClusterInfo *cluster);
static void get_bin_version(ClusterInfo *cluster);
static char *get_canonical_locale_name(int category, const char *locale);
*************** check_and_dump_old_cluster(bool live_che
*** 97,102 ****
--- 98,104 ----
check_is_super_user(&old_cluster);
check_for_prepared_transactions(&old_cluster);
check_for_reg_data_type_usage(&old_cluster);
+ check_for_invalid_indexes(&old_cluster);
check_for_isn_and_int8_passing_mismatch(&old_cluster);
/* old = PG 8.3 checks? */
*************** check_for_reg_data_type_usage(ClusterInf
*** 920,925 ****
--- 922,1015 ----
" %s\n\n", output_path);
}
else
+ check_ok();
+ }
+
+
+ /*
+ * check_for_invalid_indexes()
+ *
+ * CREATE INDEX CONCURRENTLY can create invalid indexes if the index build
+ * fails. These are dumped as valid indexes by pg_dump, but the
+ * underlying files are still invalid indexes. This checks to make sure
+ * no invalid indexes exist, either failed index builds or concurrent
+ * indexes in the process of being created.
+ */
+ static void
+ check_for_invalid_indexes(ClusterInfo *cluster)
+ {
+ int dbnum;
+ FILE *script = NULL;
+ bool found = false;
+ char output_path[MAXPGPATH];
+
+ prep_status("Checking for invalid indexes from concurrent index builds");
+
+ snprintf(output_path, sizeof(output_path), "invalid_indexes.txt");
+
+ for (dbnum = 0; dbnum < cluster->dbarr.ndbs; dbnum++)
+ {
+ PGresult *res;
+ bool db_used = false;
+ int ntups;
+ int rowno;
+ int i_nspname,
+ i_relname;
+ DbInfo *active_db = &cluster->dbarr.dbs[dbnum];
+ PGconn *conn = connectToServer(cluster, active_db->db_name);
+
+ res = executeQueryOrDie(conn,
+ "SELECT n.nspname, c.relname "
+ "FROM pg_catalog.pg_class c, "
+ " pg_catalog.pg_namespace n, "
+ " pg_catalog.pg_index i "
+ "WHERE i.indisvalid = false AND "
+ " i.indexrelid = c.oid AND "
+ " c.relnamespace = n.oid AND "
+ /* we do not migrate these, so skip them */
+ " n.nspname != 'pg_catalog' AND "
+ " n.nspname != 'information_schema' AND "
+ /* indexes do not have toast tables */
+ " n.nspname != 'pg_toast'");
+
+ ntups = PQntuples(res);
+ i_nspname = PQfnumber(res, "nspname");
+ i_relname = PQfnumber(res, "relname");
+ for (rowno = 0; rowno < ntups; rowno++)
+ {
+ found = true;
+ if (script == NULL && (script = fopen_priv(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_relname));
+ }
+
+ PQclear(res);
+
+ PQfinish(conn);
+ }
+
+ if (script)
+ fclose(script);
+
+ if (found)
+ {
+ pg_log(PG_REPORT, "fatal\n");
+ pg_log(PG_FATAL,
+ "Your installation contains invalid indexes due to failed or\n"
+ "currently running CREATE INDEX CONCURRENTLY operations. You\n"
+ "cannot upgrade until these indexes are valid or removed. A\n"
+ "list of the problem indexes is in the file:\n"
+ " %s\n\n", output_path);
+ }
+ else
check_ok();
}
--
Sent via pgsql-hackers mailing list ([email protected])
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-hackers
