71 lines
2.6 KiB
Markdown
71 lines
2.6 KiB
Markdown
Tracking v7 progress toward becoming the default.
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## step 1: release
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done
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## step 2: default for new direct mode repositories
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Done when using the command line to init in a crippled filesystem.
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The assistant still creates direct mode repositories though,
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and will need to enable annex.thin and adjusted unlocked branch instead.
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## step 3: auto-upgrade from direct mode
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Direct mode is very buggy and limited, so it's easy for v7 (with adjusted
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unlocked branches) to be better than it.
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Note that direct mode repos with old git-annex interoperate with adjusted
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unlocked repos with new git-annex, so there is no need to wait for v7 to be
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widely supported.
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One problem with this is that direct mode stores only a single copy
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of a file, but v7 unlocked with annex.thin needs two copies if hard links
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are not supported. So some users will experience the repo doubling in size.
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Limited mostly to windows, also some FAT media. This seems difficult
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to avoid though, see discussion in
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<http://git-annex.branchable.com/todo/annex.thin_without_hardlinks/>
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## step 4: default for all new repositories
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Could probably happen fairly soon after switch of direct mode.
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This is entirely new repositories that git-annex init is run in for the
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first time (no sibling git-annex branches). Limiting to new repos
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avoids the problems discussed in step 5.
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## step 5: automatic v5 to v7 upgrades
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Since v5 repos and v7 repos not using unlocked files are functionally
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almost identical, this is unlikely to break much. Unlocking files will of
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course change behavior though.
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This needs to be deferred until every git-annex likely to be in use
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supports v7. A v5 repository may be used by multiple
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machines, some not supporting v7 and some that do. If one upgrades to v7
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and starts using unlocked files, those files won't be accessible on the old
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v5 machines.
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> v7 is in debian stable now; oldstable (stretch) has v7 available
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> as a backport but not by default, and will remain supported
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> until 2022.
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>
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> But workflows involving unlocking and re-locking that work on v5 will
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> also work on v7 and keep the repo compatible with v5. Only if some
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> users commit unlocked files is v5 compatability lost, and even then
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> it's easy to re-lock the file to fix compatabilityagain. So the risk
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> of a too early upgrade to v7 is not very big.
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Note that [[sqlite_database_improvements]] seems to need a v8 mode,
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and so is blocked on v5 auto-upgrading.
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## step 6: remove support for direct mode
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Will simplify a lot of code.
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## step 7: remove support for v5
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This won't simplify much code, worth doing eventually. Once automatic v5 to
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v7 upgrades happen, the remaining v5 specific code is not needed any
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longer.
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