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v7 bug review and cleanup

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Joey Hess 2019-08-28 12:13:31 -04:00
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doc/todo/v7_path_toward_default.mdwn
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@ -46,13 +46,21 @@ Since v5 repos and v7 repos not using unlocked files are functionally
almost identical, this is unlikely to break much. Unlocking files will of
course change behavior though.
The only significant difference is that Annex.Content in v7
reads and writes to the keys database. So any problem with the database
code could prevent using git-annex. WSL has such a problem currently,
but it doesn't seem to affect using v7 repos, only adjusted branches.
<http://git-annex.branchable.com/bugs/WSL_adjusted_braches__58___smudge_fails_with_sqlite_thread_crashed_-_locking_protocol/>
(Actually, v5 does read and write to the keys database some too,
though unncessarily so.)
When not using unlocked files, the only significant difference is that
Annex.Content in v7 reads and writes to the keys database. So any problem
with the database code could prevent using git-annex.
* WSL has such a problem currently,
but it doesn't seem to affect using v7 repos, only adjusted branches.
<http://git-annex.branchable.com/bugs/WSL_adjusted_braches__58___smudge_fails_with_sqlite_thread_crashed_-_locking_protocol/>
* A 2016 bug reported the keys database not working on lustre,
presumably due to sqlite needing part of POSIX that lustre does not provide
or something.
<http://git-annex.branchable.com/bugs/drop_blows_on_lustre__58___SQLite3_returned_ErrorIO/>
There are also some slight performance differences, but they go both ways,
for example the pre-commit hook is faster in v7 than v5, but v7 runs git
diff in reconcileStaged.
A concern is that a v5 repository may be used by multiple machines,
some not supporting v7 and some that do. If one upgrades to v7