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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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18
src/include/pgstat.h
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@ -64,7 +64,8 @@ typedef enum StatMsgType
PGSTAT_MTYPE_FUNCPURGE,
PGSTAT_MTYPE_RECOVERYCONFLICT,
PGSTAT_MTYPE_TEMPFILE,
PGSTAT_MTYPE_DEADLOCK
PGSTAT_MTYPE_DEADLOCK,
PGSTAT_MTYPE_CHECKSUMFAILURE
} StatMsgType;
/* ----------
@ -530,6 +531,18 @@ typedef struct PgStat_MsgDeadlock
Oid m_databaseid;
} PgStat_MsgDeadlock;
/* ----------
* PgStat_MsgChecksumFailure Sent by the backend to tell the collector
* about checksum failures noticed.
* ----------
*/
typedef struct PgStat_MsgChecksumFailure
{
PgStat_MsgHdr m_hdr;
Oid m_databaseid;
int m_failurecount;
} PgStat_MsgChecksumFailure;
/* ----------
* PgStat_Msg Union over all possible messages.
@ -593,6 +606,7 @@ typedef struct PgStat_StatDBEntry
PgStat_Counter n_temp_files;
PgStat_Counter n_temp_bytes;
PgStat_Counter n_deadlocks;
PgStat_Counter n_checksum_failures;
PgStat_Counter n_block_read_time; /* times in microseconds */
PgStat_Counter n_block_write_time;
@ -1200,6 +1214,8 @@ extern void pgstat_report_analyze(Relation rel,
extern void pgstat_report_recovery_conflict(int reason);
extern void pgstat_report_deadlock(void);
extern void pgstat_report_checksum_failures_in_db(Oid dboid, int failurecount);
extern void pgstat_report_checksum_failure(void);
extern void pgstat_initialize(void);
extern void pgstat_bestart(void);