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Chris LuandGitHub
2f0643e5b1
* fix(volume): verify the .dat-tail needle in the integrity check CheckVolumeDataIntegrity checked the last entry by file position in the .idx and, for a live needle, flipped the volume read-only when fileSize > fileTailOffset. That entry is the .dat tail only when the .idx is in append order; a key-sorted .idx (weed fix and other rebuilds listed entries by key) puts the highest-key needle last, whose tail sits mid-file, so healthy volumes went read-only on every load and re-running weed fix only reproduced the sorted index. Locate the needle at the maximum offset — the one physically last in the .dat — and verify the .dat ends exactly at it, regardless of .idx ordering. The append-ordered common case stays O(1) (the last entry's on-disk end matches the .dat size); only a key-sorted index pays a single linear scan. Deletion tombstones at the tail are now verified too, instead of skipping the file-size check. * fix(command): weed fix rebuilds the .idx in .dat offset order SaveToIdx wrote entries via AscendingVisit — sorted by key, the .sdx/.ecx shape — so the rebuilt .idx put the highest-key needle last instead of the .dat-tail needle, and dropped tombstones whose live needle was gone. Collect the live and deleted entries, sort by .dat offset, and write them in append order so the .idx stays a faithful log whose last entry is the real .dat tail.