Parents and children of check-in [8446adcd98]
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2026-07-28
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| 07:02 |
Sub-manifest: settings, the emission gate, and the analysis pass
Emission is off by default and turning it on is an explicit act that must name the partition parameter: there is no fallback value, enabling without one is refused, and a pinned value outside the supported range emits flat manifests and says so rather than substituting a parameter of its own. Turning it off returns the next commit to flat. The analysis pass reports what the parameter would cost over a name set; it pins nothing. A server whose setting is off now sends the avoid-submanifests pragma, which the receiving side already latched. It leads the pragma run in both the ordinary and the clone reply, so six tests that read a reply's first card were updated to account for it; each still asserts the same content it did before, behind the new card. Fossil 2.28 tolerates the pragma and the interoperability suite is unchanged. The parameter is repository-local. The specification requires it to propagate to clones, since sharing by content address holds only while every writer partitions identically; that shortfall is recorded rather than implied away. check-in: 92a40960d1 user: dmestas tags: sub-manifest | |
| 04:54 |
Sub-manifest: sync and repository state for trees
An absent S reference now phantomizes like any other missing reference, its dependent is deferred and retried when the artifact arrives, and the sweep excludes sub-manifests so it still terminates. Phantoms survive a restart through a rebuild-on-open invariant resting on a durable seen-submanifest setting rather than on records the log never wrote. The transfer gate decides by artifact shape on all three send paths, so a leaf is refused wherever a tree manifest is, and the memo returns its own copy rather than a view into pages the store may free. The gate remembers what it withheld from a peer, which is what lets an exchange with a peer that refuses sub-manifests terminate at all. That record is now cleared only when the peer's announced version actually changes: a peer that re-announces the same version in every reply was clearing it every round, so the same artifacts were offered and refused forever. One requirement is not implemented: a server whose setting is off must send the avoid-submanifests pragma, and emitting it changes the card sequence every clone-reply test walks. That is a protocol-shape change worth its own review rather than a rider here; the pragma is parsed and latched on receipt already. check-in: 8446adcd98 user: dmestas tags: sub-manifest | |
| 03:31 |
Sub-manifest: complete the conformance corpus
Sub-manifests have no reference implementation to check against, so the corpus is the oracle and had to be built rather than assumed. Adds the eleven vectors Appendix A.5 requires that were missing, among them the three-level tree whose absence is why the step-5 cursor contradiction survived into an implementation: no published artifact carried an interior node, so nothing exercised that path. Every authored vector is generated by the implementation and then rechecked along a path that shares no code with it, and each derived name is compared against the constant the test pins, so no hash in the corpus is hand-written. Two fuzz targets cover S-card classification and the tree walk. One A.5 bullet is not satisfiable as written: the re-tune vector asks for two parameters over the A.1 name list that yield trees sharing no sub-manifest, but that list's single qualifying boundary falls in the same place for the first three values and is suppressed above them. No vector was invented for it; an erratum is drafted and a test pins the finding so it stays visible. check-in: 72bba34ada user: dmestas tags: sub-manifest | |