Mercurial > hg
view tests/test-merge-commit.t @ 24787:9d5c27890790
largefiles: for update -C, only update largefiles when necessary
Before, a --clean update with largefiles would use the "optimization" that it
didn't read hashes from standin files before and after the update. Instead of
trusting the content of the standin files, it would rehash all the actual
largefiles that lfdirstate reported clean and update the standins that didn't
have the expected content. It could thus in some "impossible" situations
automatically recover from some "largefile got out sync with its standin"
issues (even there apparently still were weird corner cases where it could
fail). This extra checking is similar to what core --clean intentionally do
not do, and it made update --clean unbearable slow.
Usually in core Mercurial, --clean will rely on the dirstate to find the files
it should update. (It is thus intentionally possible (when trying to trick the
system or if there should be bugs) to end up in situations where --clean not
will restore the working directory content correctly.) Checking every file when
we "know" it is ok is however not an option - that would be too slow.
Instead, trust the content of the standin files. Use the same logic for --clean
as for linear updates and trust the dirstate and that our "logic" will keep
them in sync. It is much cheaper to just rehash the largefiles reported dirty
by a status walk and read all standins than to hash largefiles.
Most of the changes are just a change of indentation now when the different
kinds of updates no longer are handled that differently. Standins for added
files are however only written when doing a normal update, while deleted and
removed files only will be updated for --clean updates.
author | Mads Kiilerich <madski@unity3d.com> |
---|---|
date | Wed, 15 Apr 2015 15:22:16 -0400 |
parents | cb15835456cb |
children | bd625cd4e5e7 |
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Check that renames are correctly saved by a commit after a merge Test with the merge on 3 having the rename on the local parent $ hg init a $ cd a $ echo line1 > foo $ hg add foo $ hg ci -m '0: add foo' $ echo line2 >> foo $ hg ci -m '1: change foo' $ hg up -C 0 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg mv foo bar $ rm bar $ echo line0 > bar $ echo line1 >> bar $ hg ci -m '2: mv foo bar; change bar' created new head $ hg merge 1 merging bar and foo to bar 0 files updated, 1 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ cat bar line0 line1 line2 $ hg ci -m '3: merge with local rename' $ hg debugindex bar rev offset length ..... linkrev nodeid p1 p2 (re) 0 0 77 ..... 2 d35118874825 000000000000 000000000000 (re) 1 77 76 ..... 3 5345f5ab8abd 000000000000 d35118874825 (re) $ hg debugrename bar bar renamed from foo:9e25c27b87571a1edee5ae4dddee5687746cc8e2 $ hg debugindex foo rev offset length ..... linkrev nodeid p1 p2 (re) 0 0 7 ..... 0 690b295714ae 000000000000 000000000000 (re) 1 7 13 ..... 1 9e25c27b8757 690b295714ae 000000000000 (re) Revert the content change from rev 2: $ hg up -C 2 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ rm bar $ echo line1 > bar $ hg ci -m '4: revert content change from rev 2' created new head $ hg log --template '{rev}:{node|short} {parents}\n' 4:2263c1be0967 2:0f2ff26688b9 3:0555950ead28 2:0f2ff26688b9 1:5cd961e4045d 2:0f2ff26688b9 0:2665aaee66e9 1:5cd961e4045d 0:2665aaee66e9 This should use bar@rev2 as the ancestor: $ hg --debug merge 3 searching for copies back to rev 1 resolving manifests branchmerge: True, force: False, partial: False ancestor: 0f2ff26688b9, local: 2263c1be0967+, remote: 0555950ead28 preserving bar for resolve of bar bar: versions differ -> m updating: bar 1/1 files (100.00%) picked tool 'internal:merge' for bar (binary False symlink False) merging bar my bar@2263c1be0967+ other bar@0555950ead28 ancestor bar@0f2ff26688b9 premerge successful 0 files updated, 1 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ cat bar line1 line2 $ hg ci -m '5: merge' $ hg debugindex bar rev offset length ..... linkrev nodeid p1 p2 (re) 0 0 77 ..... 2 d35118874825 000000000000 000000000000 (re) 1 77 76 ..... 3 5345f5ab8abd 000000000000 d35118874825 (re) 2 153 7 ..... 4 ff4b45017382 d35118874825 000000000000 (re) 3 160 13 ..... 5 3701b4893544 ff4b45017382 5345f5ab8abd (re) Same thing, but with the merge on 3 having the rename on the remote parent: $ cd .. $ hg clone -U -r 1 -r 2 a b adding changesets adding manifests adding file changes added 3 changesets with 3 changes to 2 files (+1 heads) $ cd b $ hg up -C 1 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg merge 2 merging foo and bar to bar 0 files updated, 1 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ cat bar line0 line1 line2 $ hg ci -m '3: merge with remote rename' $ hg debugindex bar rev offset length ..... linkrev nodeid p1 p2 (re) 0 0 77 ..... 2 d35118874825 000000000000 000000000000 (re) 1 77 76 ..... 3 5345f5ab8abd 000000000000 d35118874825 (re) $ hg debugrename bar bar renamed from foo:9e25c27b87571a1edee5ae4dddee5687746cc8e2 $ hg debugindex foo rev offset length ..... linkrev nodeid p1 p2 (re) 0 0 7 ..... 0 690b295714ae 000000000000 000000000000 (re) 1 7 13 ..... 1 9e25c27b8757 690b295714ae 000000000000 (re) Revert the content change from rev 2: $ hg up -C 2 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ rm bar $ echo line1 > bar $ hg ci -m '4: revert content change from rev 2' created new head $ hg log --template '{rev}:{node|short} {parents}\n' 4:2263c1be0967 2:0f2ff26688b9 3:3ffa6b9e35f0 1:5cd961e4045d 2:0f2ff26688b9 2:0f2ff26688b9 0:2665aaee66e9 1:5cd961e4045d 0:2665aaee66e9 This should use bar@rev2 as the ancestor: $ hg --debug merge 3 searching for copies back to rev 1 resolving manifests branchmerge: True, force: False, partial: False ancestor: 0f2ff26688b9, local: 2263c1be0967+, remote: 3ffa6b9e35f0 preserving bar for resolve of bar bar: versions differ -> m updating: bar 1/1 files (100.00%) picked tool 'internal:merge' for bar (binary False symlink False) merging bar my bar@2263c1be0967+ other bar@3ffa6b9e35f0 ancestor bar@0f2ff26688b9 premerge successful 0 files updated, 1 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ cat bar line1 line2 $ hg ci -m '5: merge' $ hg debugindex bar rev offset length ..... linkrev nodeid p1 p2 (re) 0 0 77 ..... 2 d35118874825 000000000000 000000000000 (re) 1 77 76 ..... 3 5345f5ab8abd 000000000000 d35118874825 (re) 2 153 7 ..... 4 ff4b45017382 d35118874825 000000000000 (re) 3 160 13 ..... 5 3701b4893544 ff4b45017382 5345f5ab8abd (re) $ cd ..