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Track block level checksum failures in pg_stat_database

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This adds a column that counts how many checksum failures have occurred
on files belonging to a specific database. Both checksum failures
during normal backend processing and those created when a base backup
detects a checksum failure are counted.

Author: Magnus Hagander
Reviewed by: Julien Rouhaud
This commit is contained in:
Magnus Hagander
2019-03-09 10:45:17 -08:00
parent 3c5926301a
commit 6b9e875f72
10 changed files with 114 additions and 7 deletions
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15
src/backend/utils/adt/pgstatfuncs.c
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@ -1497,6 +1497,21 @@ pg_stat_get_db_deadlocks(PG_FUNCTION_ARGS)
PG_RETURN_INT64(result);
}
Datum
pg_stat_get_db_checksum_failures(PG_FUNCTION_ARGS)
{
Oid dbid = PG_GETARG_OID(0);
int64 result;
PgStat_StatDBEntry *dbentry;
if ((dbentry = pgstat_fetch_stat_dbentry(dbid)) == NULL)
result = 0;
else
result = (int64) (dbentry->n_checksum_failures);
PG_RETURN_INT64(result);
}
Datum
pg_stat_get_db_blk_read_time(PG_FUNCTION_ARGS)
{