Calle Wilund e29bf6f9e8 commitlog: Implement new format using CRC:ed sectors ...

Breaks the file into individually tagged + crc:ed pages.
Each page (sized as disk write alignment) gets a trailing
12-byte metadata, including CRC of the first page-12 bytes,
and the ID of the segment being written.

When reading, each page read is CRC:ed and checked to be part
of the expected segment by comparing ID:s. If crc is broken,
we have broken data. If crc is ok, but ID does not match, we
have a prematurely terminated segment (truncated), which, depending
on whether we use batch mode or not, implied data loss.

2023-11-21 08:50:54 +00:00

1.2 KiB

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