Mercurial > hg
view tests/test-hardlinks.t @ 41722:37b33c34bf4f
templatekw: add a {negrev} keyword
Revision numbers are getting much maligned for two reasons: they are
too long in large repos and users get confused by their local-only
nature. It just occurred to me that negative revision numbers avoid
both of those problems. Since negative revision numbers change
whenever the repo changes, it's much more obvious that they are a
local-only convenience. Additionally, for the recent commits that we
usually care about the most, negative revision numbers are always near
zero.
This commit adds a negrev templatekw to more easily expose negative
revision numbers. It's not easy to reliably produce this output with
existing keywords due to hidden commits while at the same time
ensuring good performance.
author | Jordi Gutiérrez Hermoso <jordigh@octave.org> |
---|---|
date | Fri, 15 Feb 2019 14:43:31 -0500 |
parents | f79659e1e50f |
children | d121823072b8 |
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#require hardlink reporevlogstore $ cat > nlinks.py <<EOF > from __future__ import print_function > import sys > from mercurial import pycompat, util > for f in sorted(sys.stdin.readlines()): > f = f[:-1] > print(util.nlinks(pycompat.fsencode(f)), f) > EOF $ nlinksdir() > { > find "$@" -type f | "$PYTHON" $TESTTMP/nlinks.py > } Some implementations of cp can't create hardlinks (replaces 'cp -al' on Linux): $ cat > linkcp.py <<EOF > from __future__ import absolute_import > import sys > from mercurial import pycompat, util > util.copyfiles(pycompat.fsencode(sys.argv[1]), > pycompat.fsencode(sys.argv[2]), hardlink=True) > EOF $ linkcp() > { > "$PYTHON" $TESTTMP/linkcp.py $1 $2 > } Prepare repo r1: $ hg init r1 $ cd r1 $ echo c1 > f1 $ hg add f1 $ hg ci -m0 $ mkdir d1 $ cd d1 $ echo c2 > f2 $ hg add f2 $ hg ci -m1 $ cd ../.. $ nlinksdir r1/.hg/store 1 r1/.hg/store/00changelog.i 1 r1/.hg/store/00manifest.i 1 r1/.hg/store/data/d1/f2.i 1 r1/.hg/store/data/f1.i 1 r1/.hg/store/fncache (repofncache !) 1 r1/.hg/store/phaseroots 1 r1/.hg/store/undo 1 r1/.hg/store/undo.backup.fncache (repofncache !) 1 r1/.hg/store/undo.backupfiles 1 r1/.hg/store/undo.phaseroots Create hardlinked clone r2: $ hg clone -U --debug r1 r2 --config progress.debug=true linking: 1 files linking: 2 files linking: 3 files linking: 4 files linking: 5 files linking: 6 files linking: 7 files linked 7 files Create non-hardlinked clone r3: $ hg clone --pull r1 r3 requesting all changes adding changesets adding manifests adding file changes added 2 changesets with 2 changes to 2 files new changesets 40d85e9847f2:7069c422939c updating to branch default 2 files updated, 0 files merged, 0 files removed, 0 files unresolved Repos r1 and r2 should now contain hardlinked files: $ nlinksdir r1/.hg/store 2 r1/.hg/store/00changelog.i 2 r1/.hg/store/00manifest.i 2 r1/.hg/store/data/d1/f2.i 2 r1/.hg/store/data/f1.i 2 r1/.hg/store/fncache (repofncache !) 1 r1/.hg/store/phaseroots 1 r1/.hg/store/undo 1 r1/.hg/store/undo.backup.fncache (repofncache !) 1 r1/.hg/store/undo.backupfiles 1 r1/.hg/store/undo.phaseroots $ nlinksdir r2/.hg/store 2 r2/.hg/store/00changelog.i 2 r2/.hg/store/00manifest.i 2 r2/.hg/store/data/d1/f2.i 2 r2/.hg/store/data/f1.i 2 r2/.hg/store/fncache (repofncache !) Repo r3 should not be hardlinked: $ nlinksdir r3/.hg/store 1 r3/.hg/store/00changelog.i 1 r3/.hg/store/00manifest.i 1 r3/.hg/store/data/d1/f2.i 1 r3/.hg/store/data/f1.i 1 r3/.hg/store/fncache (repofncache !) 1 r3/.hg/store/phaseroots 1 r3/.hg/store/undo 1 r3/.hg/store/undo.backupfiles 1 r3/.hg/store/undo.phaseroots Create a non-inlined filelog in r3: $ cd r3/d1 >>> f = open('data1', 'wb') >>> for x in range(10000): ... f.write(b"%d\n" % x) and None >>> f.close() $ for j in 0 1 2 3 4 5 6 7 8 9; do > cat data1 >> f2 > hg commit -m$j > done $ cd ../.. $ nlinksdir r3/.hg/store 1 r3/.hg/store/00changelog.i 1 r3/.hg/store/00manifest.i 1 r3/.hg/store/data/d1/f2.d 1 r3/.hg/store/data/d1/f2.i 1 r3/.hg/store/data/f1.i 1 r3/.hg/store/fncache (repofncache !) 1 r3/.hg/store/phaseroots 1 r3/.hg/store/undo 1 r3/.hg/store/undo.backup.fncache (repofncache !) 1 r3/.hg/store/undo.backup.phaseroots 1 r3/.hg/store/undo.backupfiles 1 r3/.hg/store/undo.phaseroots Push to repo r1 should break up most hardlinks in r2: $ hg -R r2 verify checking changesets checking manifests crosschecking files in changesets and manifests checking files checked 2 changesets with 2 changes to 2 files $ cd r3 $ hg push pushing to $TESTTMP/r1 searching for changes adding changesets adding manifests adding file changes added 10 changesets with 10 changes to 1 files $ cd .. $ nlinksdir r2/.hg/store 1 r2/.hg/store/00changelog.i 1 r2/.hg/store/00manifest.i 1 r2/.hg/store/data/d1/f2.i 2 r2/.hg/store/data/f1.i [12] r2/\.hg/store/fncache (re) (repofncache !) #if hardlink-whitelisted repofncache $ nlinksdir r2/.hg/store/fncache 2 r2/.hg/store/fncache #endif $ hg -R r2 verify checking changesets checking manifests crosschecking files in changesets and manifests checking files checked 2 changesets with 2 changes to 2 files $ cd r1 $ hg up 1 files updated, 0 files merged, 0 files removed, 0 files unresolved Committing a change to f1 in r1 must break up hardlink f1.i in r2: $ echo c1c1 >> f1 $ hg ci -m00 $ cd .. $ nlinksdir r2/.hg/store 1 r2/.hg/store/00changelog.i 1 r2/.hg/store/00manifest.i 1 r2/.hg/store/data/d1/f2.i 1 r2/.hg/store/data/f1.i [12] r2/\.hg/store/fncache (re) (repofncache !) #if hardlink-whitelisted repofncache $ nlinksdir r2/.hg/store/fncache 2 r2/.hg/store/fncache #endif Create a file which exec permissions we will change $ cd r3 $ echo "echo hello world" > f3 $ hg add f3 $ hg ci -mf3 $ cd .. $ cd r3 $ hg tip --template '{rev}:{node|short}\n' 12:d3b77733a28a $ echo bla > f1 $ chmod +x f3 $ hg ci -m1 $ cd .. Create hardlinked copy r4 of r3 (on Linux, we would call 'cp -al'): $ linkcp r3 r4 'checklink' is produced by hardlinking a symlink, which is undefined whether the symlink should be followed or not. It does behave differently on Linux and BSD. Just remove it so the test pass on both platforms. $ rm -f r4/.hg/wcache/checklink r4 has hardlinks in the working dir (not just inside .hg): $ nlinksdir r4 2 r4/.hg/00changelog.i 2 r4/.hg/branch 2 r4/.hg/cache/branch2-base 2 r4/.hg/cache/branch2-served 2 r4/.hg/cache/manifestfulltextcache (reporevlogstore !) 2 r4/.hg/cache/rbc-names-v1 2 r4/.hg/cache/rbc-revs-v1 2 r4/.hg/dirstate 2 r4/.hg/fsmonitor.state (fsmonitor !) 2 r4/.hg/hgrc 2 r4/.hg/last-message.txt 2 r4/.hg/requires 2 r4/.hg/store/00changelog.i 2 r4/.hg/store/00manifest.i 2 r4/.hg/store/data/d1/f2.d 2 r4/.hg/store/data/d1/f2.i 2 r4/.hg/store/data/f1.i 2 r4/.hg/store/data/f3.i 2 r4/.hg/store/fncache (repofncache !) 2 r4/.hg/store/phaseroots 2 r4/.hg/store/undo 2 r4/.hg/store/undo.backup.fncache (repofncache !) 2 r4/.hg/store/undo.backup.phaseroots 2 r4/.hg/store/undo.backupfiles 2 r4/.hg/store/undo.phaseroots [24] r4/\.hg/undo\.backup\.dirstate (re) 2 r4/.hg/undo.bookmarks 2 r4/.hg/undo.branch 2 r4/.hg/undo.desc [24] r4/\.hg/undo\.dirstate (re) 2 r4/.hg/wcache/checkisexec (execbit !) 2 r4/.hg/wcache/checklink-target (symlink !) 2 r4/.hg/wcache/checknoexec (execbit !) 2 r4/d1/data1 2 r4/d1/f2 2 r4/f1 2 r4/f3 Update back to revision 12 in r4 should break hardlink of file f1 and f3: #if hardlink-whitelisted $ nlinksdir r4/.hg/undo.backup.dirstate r4/.hg/undo.dirstate 4 r4/.hg/undo.backup.dirstate 4 r4/.hg/undo.dirstate #endif $ hg -R r4 up 12 2 files updated, 0 files merged, 0 files removed, 0 files unresolved (execbit !) 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (no-execbit !) $ nlinksdir r4 2 r4/.hg/00changelog.i 1 r4/.hg/branch 2 r4/.hg/cache/branch2-base 2 r4/.hg/cache/branch2-served 2 r4/.hg/cache/manifestfulltextcache (reporevlogstore !) 2 r4/.hg/cache/rbc-names-v1 2 r4/.hg/cache/rbc-revs-v1 1 r4/.hg/dirstate 1 r4/.hg/fsmonitor.state (fsmonitor !) 2 r4/.hg/hgrc 2 r4/.hg/last-message.txt 2 r4/.hg/requires 2 r4/.hg/store/00changelog.i 2 r4/.hg/store/00manifest.i 2 r4/.hg/store/data/d1/f2.d 2 r4/.hg/store/data/d1/f2.i 2 r4/.hg/store/data/f1.i 2 r4/.hg/store/data/f3.i 2 r4/.hg/store/fncache 2 r4/.hg/store/phaseroots 2 r4/.hg/store/undo 2 r4/.hg/store/undo.backup.fncache (repofncache !) 2 r4/.hg/store/undo.backup.phaseroots 2 r4/.hg/store/undo.backupfiles 2 r4/.hg/store/undo.phaseroots [24] r4/\.hg/undo\.backup\.dirstate (re) 2 r4/.hg/undo.bookmarks 2 r4/.hg/undo.branch 2 r4/.hg/undo.desc [24] r4/\.hg/undo\.dirstate (re) 2 r4/.hg/wcache/checkisexec (execbit !) 2 r4/.hg/wcache/checklink-target (symlink !) 2 r4/.hg/wcache/checknoexec (execbit !) 2 r4/d1/data1 2 r4/d1/f2 1 r4/f1 1 r4/f3 (execbit !) 2 r4/f3 (no-execbit !) #if hardlink-whitelisted $ nlinksdir r4/.hg/undo.backup.dirstate r4/.hg/undo.dirstate 4 r4/.hg/undo.backup.dirstate 4 r4/.hg/undo.dirstate #endif Test hardlinking outside hg: $ mkdir x $ echo foo > x/a $ linkcp x y $ echo bar >> y/a No diff if hardlink: $ diff x/a y/a Test mq hardlinking: $ echo "[extensions]" >> $HGRCPATH $ echo "mq=" >> $HGRCPATH $ hg init a $ cd a $ hg qimport -n foo - << EOF > # HG changeset patch > # Date 1 0 > diff -r 2588a8b53d66 a > --- /dev/null Thu Jan 01 00:00:00 1970 +0000 > +++ b/a Wed Jul 23 15:54:29 2008 +0200 > @@ -0,0 +1,1 @@ > +a > EOF adding foo to series file $ hg qpush applying foo now at: foo $ cd .. $ linkcp a b $ cd b $ hg qimport -n bar - << EOF > # HG changeset patch > # Date 2 0 > diff -r 2588a8b53d66 a > --- /dev/null Thu Jan 01 00:00:00 1970 +0000 > +++ b/b Wed Jul 23 15:54:29 2008 +0200 > @@ -0,0 +1,1 @@ > +b > EOF adding bar to series file $ hg qpush applying bar now at: bar $ cat .hg/patches/status 430ed4828a74fa4047bc816a25500f7472ab4bfe:foo 4e7abb4840c46a910f6d7b4d3c3fc7e5209e684c:bar $ cat .hg/patches/series foo bar $ cat ../a/.hg/patches/status 430ed4828a74fa4047bc816a25500f7472ab4bfe:foo $ cat ../a/.hg/patches/series foo Test tags hardlinking: $ hg qdel -r qbase:qtip patch foo finalized without changeset message patch bar finalized without changeset message $ hg tag -l lfoo $ hg tag foo $ cd .. $ linkcp b c $ cd c $ hg tag -l -r 0 lbar $ hg tag -r 0 bar $ cat .hgtags 4e7abb4840c46a910f6d7b4d3c3fc7e5209e684c foo 430ed4828a74fa4047bc816a25500f7472ab4bfe bar $ cat .hg/localtags 4e7abb4840c46a910f6d7b4d3c3fc7e5209e684c lfoo 430ed4828a74fa4047bc816a25500f7472ab4bfe lbar $ cat ../b/.hgtags 4e7abb4840c46a910f6d7b4d3c3fc7e5209e684c foo $ cat ../b/.hg/localtags 4e7abb4840c46a910f6d7b4d3c3fc7e5209e684c lfoo $ cd ..