Mercurial > hg
view tests/test-simple-update.t @ 31209:dd2364f5180a
localrepo: handle rename with hardlinks properly
In "aftertrans", we rename "journal.*" to "undo.*". We expect "journal.*"
files to disappear after renaming.
However, if "journal.foo" and "undo.foo" refer to a same file (hardlink),
rename may be a no-op, leaving both files on disk, according to Linux
manpage [1]:
If oldpath and newpath are existing hard links referring to the same
file, then rename() does nothing, and returns a suc‐ cess status.
The POSIX specification [2] is not very clear about what to do.
To be safe, remove "undo.*" before the rename so "journal.*" cannot be left
on disk.
[1]: http://man7.org/linux/man-pages/man2/rename.2.html
[2]: http://pubs.opengroup.org/onlinepubs/9699919799/
author | Jun Wu <quark@fb.com> |
---|---|
date | Thu, 02 Mar 2017 21:49:30 -0800 |
parents | a91c62752d08 |
children | 75be14993fda |
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$ hg init test $ cd test $ echo foo>foo $ hg addremove adding foo $ hg commit -m "1" $ hg verify checking changesets checking manifests crosschecking files in changesets and manifests checking files 1 files, 1 changesets, 1 total revisions $ hg clone . ../branch updating to branch default 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cd ../branch $ hg co 0 files updated, 0 files merged, 0 files removed, 0 files unresolved $ echo bar>>foo $ hg commit -m "2" $ cd ../test $ hg pull ../branch pulling from ../branch searching for changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files (run 'hg update' to get a working copy) $ hg verify checking changesets checking manifests crosschecking files in changesets and manifests checking files 1 files, 2 changesets, 2 total revisions $ hg co 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cat foo foo bar $ hg manifest --debug 6f4310b00b9a147241b071a60c28a650827fb03d 644 foo update to rev 0 with a date $ hg upd -d foo 0 abort: you can't specify a revision and a date [255] $ cd .. update with worker processes #if no-windows $ cat <<EOF > forceworker.py > from mercurial import extensions, worker > def nocost(orig, ui, costperop, nops): > return worker._numworkers(ui) > 1 > def uisetup(ui): > extensions.wrapfunction(worker, 'worthwhile', nocost) > EOF $ hg init worker $ cd worker $ cat <<EOF >> .hg/hgrc > [extensions] > forceworker = $TESTTMP/forceworker.py > [worker] > numcpus = 4 > EOF $ for i in `python $TESTDIR/seq.py 1 100`; do > echo $i > $i > done $ hg ci -qAm 'add 100 files' $ hg update null 0 files updated, 0 files merged, 100 files removed, 0 files unresolved $ hg update -v | grep 100 getting 100 100 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cd .. #endif