hesela.devJournal checkpoint
A journal checkpoint writes committed journaled state to its home locations so the corresponding log space can be reclaimed.
This is not the same event as committing recovery information to the journal. In JBD2, checkpointing concerns committed buffers and journal-space management. [1] Do not infer an application's transaction boundary from this filesystem mechanism. [2]
Relations
- related
- crash-consistency, write-ahead-log, database-checkpoint, journal-revoke-record, ext4-fast-commit
Limitations
- The cited Linux v6.12 mechanism and explanatory model do not certify a deployed kernel or storage stack. [2]