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Can we delete the large .zst files created in "/crypt/pgbackrest_repo/" ?

Question & Answer


Question

Customer notices the large "zst" files created in "/crypt/pgbackrest_repo/directory. What are they and can they be deleted?

Answer

The "zst" files are WAL files that created by the soarSystemBackup utility pgBackRest repository, as the "/etc/pgbackrest/pgbackrest.conf" specified, 

repo1-path=/crypt/pgbackrest_repo

repo1-retention-full=7

repo1-retention-full-type=time

compress-type=zst

The "zst" transaction logs be retained as WAL, are kept with backups (incremental and full). The duration is controlled by retention policies. The current default is 7-days, which means 14 days due to the way files are expired. You can change the setting of the line, 

repo1-retention-full=<n>

Where <n> is the number of days (for example, 3). 

The WAL will be kept 7 days as the default setting. When the next "pgbackrest" starts, the old WAL file is removed.


 

Related Information

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Document Information

Modified date:
25 May 2024

UID

ibm17047195