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Lu, Huayi ef0ada5a59 DWS DEV 20240716 version 
Reviewed-by: Pruthi, Vineet <vineet.pruthi@t-systems.com>
Co-authored-by: Lu, Huayi <luhuayi@huawei.com>
Co-committed-by: Lu, Huayi <luhuayi@huawei.com>
2024-11-02 09:07:47 +00:00

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Standby Server

build_backup_param

Parameter description: Specifies the minimum specifications for disk backup during incremental build.

Type: SIGHUP

Value range: a string

Default value: (1%, 1G, 1G)

This parameter specifies whether the pg_rewind_bak directory is generated during incremental build. The character string takes effect only when it is configured in the 'x %, yG, zG' format. This parameter is valid only when gs_guc set is set to a valid value. x indicates the percentage of minimum remaining space, y indicates the minimum remaining space, and z indicates the total disk space.

The pg_rewind_bak file is generated and backed up only when both of the following conditions are met:

  • Condition 1: The total disk capacity is greater than or equals to z GB. If this condition is not met, the backup is not performed. If this condition is met, the system continues to check condition 2.
  • Condition 2: The remaining disk space is greater than or equals to y GB and the percentage of the remaining disk space is greater than or equals to x %.
Parent topic: HA Replication