Mercurial > hg
view tests/test-flags.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 | 7a9cbb315d84 |
children | eb586ed5d8ce |
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#require execbit $ umask 027 $ hg init test1 $ cd test1 $ touch a b $ hg add a b $ hg ci -m "added a b" $ cd .. $ hg clone test1 test3 updating to branch default 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg init test2 $ cd test2 $ hg pull ../test1 pulling from ../test1 requesting all changes adding changesets adding manifests adding file changes added 1 changesets with 2 changes to 2 files (run 'hg update' to get a working copy) $ hg co 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ chmod +x a $ hg ci -m "chmod +x a" the changelog should mention file a: $ hg tip --template '{files}\n' a $ cd ../test1 $ echo 123 >>a $ hg ci -m "a updated" $ hg pull ../test2 pulling from ../test2 searching for changes adding changesets adding manifests adding file changes added 1 changesets with 0 changes to 0 files (+1 heads) (run 'hg heads' to see heads, 'hg merge' to merge) $ hg heads changeset: 2:7f4313b42a34 tag: tip parent: 0:22a449e20da5 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: chmod +x a changeset: 1:c6ecefc45368 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: a updated $ hg history changeset: 2:7f4313b42a34 tag: tip parent: 0:22a449e20da5 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: chmod +x a changeset: 1:c6ecefc45368 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: a updated changeset: 0:22a449e20da5 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: added a b $ hg -v merge resolving manifests 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ cat a 123 $ [ -x a ] $ cd ../test3 $ echo 123 >>b $ hg ci -m "b updated" $ hg pull ../test2 pulling from ../test2 searching for changes adding changesets adding manifests adding file changes added 1 changesets with 0 changes to 0 files (+1 heads) (run 'hg heads' to see heads, 'hg merge' to merge) $ hg heads changeset: 2:7f4313b42a34 tag: tip parent: 0:22a449e20da5 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: chmod +x a changeset: 1:dc57ead75f79 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: b updated $ hg history changeset: 2:7f4313b42a34 tag: tip parent: 0:22a449e20da5 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: chmod +x a changeset: 1:dc57ead75f79 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: b updated changeset: 0:22a449e20da5 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: added a b $ hg -v merge resolving manifests 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ ls -l ../test[123]/a > foo $ cut -b 1-10 < foo -rwxr-x--- -rwxr-x--- -rwxr-x--- $ hg debugindex a rev offset length ..... linkrev nodeid p1 p2 (re) 0 0 0 ..... 0 b80de5d13875 000000000000 000000000000 (re) $ hg debugindex -R ../test2 a rev offset length ..... linkrev nodeid p1 p2 (re) 0 0 0 ..... 0 b80de5d13875 000000000000 000000000000 (re) $ hg debugindex -R ../test1 a rev offset length ..... linkrev nodeid p1 p2 (re) 0 0 0 ..... 0 b80de5d13875 000000000000 000000000000 (re) 1 0 5 ..... 1 7fe919cc0336 b80de5d13875 000000000000 (re) $ cd ..