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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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5
doc/src/sgml/monitoring.sgml
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@ -2508,6 +2508,11 @@ SELECT pid, wait_event_type, wait_event FROM pg_stat_activity WHERE wait_event i
<entry><type>bigint</type></entry>
<entry>Number of deadlocks detected in this database</entry>
</row>
<row>
<entry><structfield>checksum_failures</structfield></entry>
<entry><type>bigint</type></entry>
<entry>Number of data page checksum failures detected in this database</entry>
</row>
<row>
<entry><structfield>blk_read_time</structfield></entry>
<entry><type>double precision</type></entry>