4 ms·
Also, I'm not 100% certain what the interaction is between the checksums of the VFS shim and the WAL checksums during checkpointing w.r.t. silent durability los
by ncruces 2y ago
Also, I'm not 100% certain what the interaction is between the checksums of the VFS shim and the WAL checksums during checkpointing w.r.t. silent durability loss.
The shim's checksums are explicitly ignored during checkpointing so I'd need to think it through.
The VFS is focused on not (silently) accepting corrupted data, not necessarily on not (silently) ignoring it.
- ncruces 2y agoYeah, I've double checked. The checksum VFS shim does nothing to fix the (silent) data loss a random bit flip in the WAL causes. If you want long term durability, checkpoint your WAL. Then the checksum VFS will help.