PostgreSQL 12 preview - pg_stat_database新增 block checksum 错误统计技术

作者

digoal

日期

2019-04-05

标签

PostgreSQL , pg_stat_database , checksum , block

背景

PostgreSQL 12 将新增pg_stat_database的block checksum失败的统计计数，可以尽早的发现IO系统的问题。

```
Track block level checksum failures in pg_stat_database

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
```

参考

https://git.postgresql.org/gitweb/?p=postgresql.git;a=commit;h=6b9e875f7286d8535bff7955e5aa3602e188e436

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