mirror of
https://github.com/facebook/sapling.git
synced 2024-10-11 09:17:30 +03:00
f3718fc48d
Summary: D9328199 made them skip eden mounts. This diff expands the whitelist to other common filesystems. Reviewed By: wez Differential Revision: D9416599 fbshipit-source-id: 5f1dddf5a181833a2fa6e0954c2579bb5adcd170
338 lines
7.7 KiB
Perl
338 lines
7.7 KiB
Perl
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#require hardlink
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$ cat > nlinks.py <<EOF
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> from __future__ import print_function
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> import sys
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> from mercurial import util
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> for f in sorted(sys.stdin.readlines()):
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> f = f[:-1]
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> print(util.nlinks(f), f)
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> EOF
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$ nlinksdir()
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> {
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> find "$@" -type f | $PYTHON $TESTTMP/nlinks.py
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> }
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Some implementations of cp can't create hardlinks (replaces 'cp -al' on Linux):
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$ cat > linkcp.py <<EOF
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> from __future__ import absolute_import
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> import sys
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> from mercurial import util
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> util.copyfiles(sys.argv[1], sys.argv[2], hardlink=True)
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> EOF
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$ linkcp()
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> {
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> $PYTHON $TESTTMP/linkcp.py $1 $2
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> }
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Prepare repo r1:
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$ hg init r1
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$ cd r1
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$ echo c1 > f1
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$ hg add f1
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$ hg ci -m0
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$ mkdir d1
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$ cd d1
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$ echo c2 > f2
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$ hg add f2
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$ hg ci -m1
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$ cd ../..
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$ nlinksdir r1/.hg/store
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1 r1/.hg/store/00changelog.i
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1 r1/.hg/store/00manifest.i
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1 r1/.hg/store/data/d1/f2.i
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1 r1/.hg/store/data/f1.i
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1 r1/.hg/store/fncache
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1 r1/.hg/store/phaseroots
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1 r1/.hg/store/undo
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1 r1/.hg/store/undo.backup.fncache
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1 r1/.hg/store/undo.backupfiles
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1 r1/.hg/store/undo.phaseroots
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Create hardlinked clone r2:
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$ hg clone -U --debug r1 r2 --config progress.debug=true
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progress: linking: 1
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progress: linking: 2
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progress: linking: 3
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progress: linking: 4
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progress: linking: 5
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progress: linking: 6
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progress: linking: 7
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progress: linking (end)
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linked 7 files
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Create non-hardlinked clone r3:
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$ hg clone --pull r1 r3
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requesting all changes
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adding changesets
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adding manifests
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adding file changes
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added 2 changesets with 2 changes to 2 files
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new changesets 40d85e9847f2:7069c422939c
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updating to branch default
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2 files updated, 0 files merged, 0 files removed, 0 files unresolved
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Repos r1 and r2 should now contain hardlinked files:
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$ nlinksdir r1/.hg/store
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2 r1/.hg/store/00changelog.i
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2 r1/.hg/store/00manifest.i
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2 r1/.hg/store/data/d1/f2.i
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2 r1/.hg/store/data/f1.i
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2 r1/.hg/store/fncache
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1 r1/.hg/store/phaseroots
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1 r1/.hg/store/undo
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1 r1/.hg/store/undo.backup.fncache
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1 r1/.hg/store/undo.backupfiles
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1 r1/.hg/store/undo.phaseroots
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$ nlinksdir r2/.hg/store
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2 r2/.hg/store/00changelog.i
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2 r2/.hg/store/00manifest.i
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2 r2/.hg/store/data/d1/f2.i
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2 r2/.hg/store/data/f1.i
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2 r2/.hg/store/fncache
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Repo r3 should not be hardlinked:
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$ nlinksdir r3/.hg/store
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1 r3/.hg/store/00changelog.i
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1 r3/.hg/store/00manifest.i
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1 r3/.hg/store/data/d1/f2.i
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1 r3/.hg/store/data/f1.i
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1 r3/.hg/store/fncache
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1 r3/.hg/store/phaseroots
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1 r3/.hg/store/undo
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1 r3/.hg/store/undo.backupfiles
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1 r3/.hg/store/undo.phaseroots
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Create a non-inlined filelog in r3:
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$ cd r3/d1
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>>> f = open('data1', 'wb')
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>>> for x in range(10000):
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... f.write("%s\n" % str(x))
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>>> f.close()
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$ for j in 0 1 2 3 4 5 6 7 8 9; do
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> cat data1 >> f2
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> hg commit -m$j
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> done
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$ cd ../..
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$ nlinksdir r3/.hg/store
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1 r3/.hg/store/00changelog.i
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1 r3/.hg/store/00manifest.i
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1 r3/.hg/store/data/d1/f2.d
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1 r3/.hg/store/data/d1/f2.i
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1 r3/.hg/store/data/f1.i
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1 r3/.hg/store/fncache
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1 r3/.hg/store/phaseroots
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1 r3/.hg/store/undo
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1 r3/.hg/store/undo.backup.fncache
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1 r3/.hg/store/undo.backup.phaseroots
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1 r3/.hg/store/undo.backupfiles
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1 r3/.hg/store/undo.phaseroots
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Push to repo r1 should break up most hardlinks in r2:
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$ hg -R r2 verify
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checking changesets
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checking manifests
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crosschecking files in changesets and manifests
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checking files
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2 files, 2 changesets, 2 total revisions
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$ cd r3
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$ hg push
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pushing to $TESTTMP/r1
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searching for changes
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adding changesets
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adding manifests
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adding file changes
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added 10 changesets with 10 changes to 1 files
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$ cd ..
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$ nlinksdir r2/.hg/store
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1 r2/.hg/store/00changelog.i
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1 r2/.hg/store/00manifest.i
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1 r2/.hg/store/data/d1/f2.i
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2 r2/.hg/store/data/f1.i
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[12] r2/\.hg/store/fncache (re)
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#if hardlink-whitelisted
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$ nlinksdir r2/.hg/store/fncache
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2 r2/.hg/store/fncache
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#endif
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$ hg -R r2 verify
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checking changesets
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checking manifests
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crosschecking files in changesets and manifests
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checking files
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2 files, 2 changesets, 2 total revisions
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$ cd r1
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$ hg up
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1 files updated, 0 files merged, 0 files removed, 0 files unresolved
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Committing a change to f1 in r1 must break up hardlink f1.i in r2:
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$ echo c1c1 >> f1
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$ hg ci -m00
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$ cd ..
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$ nlinksdir r2/.hg/store
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1 r2/.hg/store/00changelog.i
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1 r2/.hg/store/00manifest.i
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1 r2/.hg/store/data/d1/f2.i
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1 r2/.hg/store/data/f1.i
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[12] r2/\.hg/store/fncache (re)
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#if hardlink-whitelisted
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$ nlinksdir r2/.hg/store/fncache
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2 r2/.hg/store/fncache
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#endif
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Create a file which exec permissions we will change
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$ cd r3
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$ echo "echo hello world" > f3
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$ hg add f3
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$ hg ci -mf3
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$ cd ..
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$ cd r3
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$ hg tip --template '{rev}:{node|short}\n'
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12:d3b77733a28a
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$ echo bla > f1
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$ chmod +x f3
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$ hg ci -m1
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$ cd ..
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Create hardlinked copy r4 of r3 (on Linux, we would call 'cp -al'):
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$ linkcp r3 r4
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'checklink' is produced by hardlinking a symlink, which is undefined whether
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the symlink should be followed or not. It does behave differently on Linux and
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BSD. Just remove it so the test pass on both platforms.
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$ rm -f r4/.hg/cache/checklink
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r4 has hardlinks in the working dir (not just inside .hg):
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$ nlinksdir r4 | grep -v check
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2 r4/.hg/00changelog.i
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2 r4/.hg/branch
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2 r4/.hg/cache/branch2-base
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2 r4/.hg/cache/branch2-served
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2 r4/.hg/cache/rbc-names-v1
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2 r4/.hg/cache/rbc-revs-v1
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2 r4/.hg/dirstate
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2 r4/.hg/hgrc
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2 r4/.hg/last-message.txt
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2 r4/.hg/requires
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2 r4/.hg/store/00changelog.i
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2 r4/.hg/store/00manifest.i
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2 r4/.hg/store/data/d1/f2.d
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2 r4/.hg/store/data/d1/f2.i
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2 r4/.hg/store/data/f1.i
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2 r4/.hg/store/data/f3.i
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2 r4/.hg/store/fncache
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2 r4/.hg/store/phaseroots
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2 r4/.hg/store/undo
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2 r4/.hg/store/undo.backup.fncache
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2 r4/.hg/store/undo.backup.phaseroots
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2 r4/.hg/store/undo.backupfiles
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2 r4/.hg/store/undo.phaseroots
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2 r4/.hg/treestate/* (glob)
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[24] r4/\.hg/undo\.backup\.dirstate (re)
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2 r4/.hg/undo.bookmarks
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2 r4/.hg/undo.branch
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2 r4/.hg/undo.desc
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[24] r4/\.hg/undo\.dirstate (re)
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2 r4/d1/data1
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2 r4/d1/f2
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2 r4/f1
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2 r4/f3
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Update back to revision 12 in r4 should break hardlink of file f1 and f3:
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#if hardlink-whitelisted
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$ nlinksdir r4/.hg/undo.backup.dirstate r4/.hg/undo.dirstate
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4 r4/.hg/undo.backup.dirstate
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4 r4/.hg/undo.dirstate
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#endif
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$ hg -R r4 up 12
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2 files updated, 0 files merged, 0 files removed, 0 files unresolved (execbit !)
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1 files updated, 0 files merged, 0 files removed, 0 files unresolved (no-execbit !)
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$ nlinksdir r4 | grep -v check
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2 r4/.hg/00changelog.i
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1 r4/.hg/branch
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2 r4/.hg/cache/branch2-base
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2 r4/.hg/cache/branch2-served
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2 r4/.hg/cache/rbc-names-v1
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2 r4/.hg/cache/rbc-revs-v1
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1 r4/.hg/dirstate
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2 r4/.hg/hgrc
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2 r4/.hg/last-message.txt
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2 r4/.hg/requires
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2 r4/.hg/store/00changelog.i
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2 r4/.hg/store/00manifest.i
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2 r4/.hg/store/data/d1/f2.d
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2 r4/.hg/store/data/d1/f2.i
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2 r4/.hg/store/data/f1.i
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2 r4/.hg/store/data/f3.i
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2 r4/.hg/store/fncache
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2 r4/.hg/store/phaseroots
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2 r4/.hg/store/undo
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2 r4/.hg/store/undo.backup.fncache
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2 r4/.hg/store/undo.backup.phaseroots
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2 r4/.hg/store/undo.backupfiles
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2 r4/.hg/store/undo.phaseroots
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2 r4/.hg/treestate/* (glob)
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[24] r4/\.hg/undo\.backup\.dirstate (re)
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2 r4/.hg/undo.bookmarks
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2 r4/.hg/undo.branch
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2 r4/.hg/undo.desc
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[24] r4/\.hg/undo\.dirstate (re)
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2 r4/d1/data1
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2 r4/d1/f2
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1 r4/f1
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1 r4/f3 (execbit !)
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2 r4/f3 (no-execbit !)
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#if hardlink-whitelisted
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$ nlinksdir r4/.hg/undo.backup.dirstate r4/.hg/undo.dirstate
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4 r4/.hg/undo.backup.dirstate
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4 r4/.hg/undo.dirstate
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#endif
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Test hardlinking outside hg:
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$ mkdir x
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$ echo foo > x/a
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$ linkcp x y
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$ echo bar >> y/a
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No diff if hardlink:
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$ diff x/a y/a
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