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3eb9fea74e
This patch adds a case to test-hardlinks.t which demonstrates that hardlinks in the working directory are broken up (using 'hg update'). Motivation for this patch: 'hg help clone' shows copying repositories *and* the working directory using 'cp -al', creating hardlinks in the *working directory* too (not just in the store). Note that we can't use 'cp -al' since for example MacOS X doesn't support these options on cp. I'm thus using the same trick as in test-hardlinks-safety.t for creating hardlinks in the working dir.
233 lines
4.8 KiB
Perl
233 lines
4.8 KiB
Perl
$ cat > nlinks.py <<EOF
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> import os, sys
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> for f in sorted(sys.stdin.readlines()):
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> f = f[:-1]
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> print os.lstat(f).st_nlink, f
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> EOF
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$ nlinksdir()
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> {
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> find $1 -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 mercurial import util
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> import sys
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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 $2
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> }
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Prepare repo r1:
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$ mkdir r1
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$ cd r1
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$ hg init
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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/undo
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Create hardlinked clone r2:
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$ hg clone -U --debug r1 r2
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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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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/undo
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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/undo
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Create a non-inlined filelog in r3:
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$ cd r3/d1
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$ python -c 'for x in range(10000): print x' >> data1
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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/undo
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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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1 r2/.hg/store/fncache
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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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1 r2/.hg/store/fncache
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$ cd r3
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$ hg tip --template '{rev}:{node|short}\n'
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11:a6451b6bc41f
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$ echo bla > f1
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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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r4 has hardlinks in the working dir (not just inside .hg):
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$ nlinksdir r4
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2 r4/.hg/00changelog.i
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2 r4/.hg/branch
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2 r4/.hg/branchheads.cache
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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/fncache
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2 r4/.hg/store/undo
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2 r4/.hg/tags.cache
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2 r4/.hg/undo.branch
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2 r4/.hg/undo.desc
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2 r4/.hg/undo.dirstate
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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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Update back to revision 11 in r4 should break hardlink of file f1:
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$ hg -R r4 up 11
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1 files updated, 0 files merged, 0 files removed, 0 files unresolved
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$ nlinksdir r4
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2 r4/.hg/00changelog.i
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1 r4/.hg/branch
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2 r4/.hg/branchheads.cache
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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/fncache
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2 r4/.hg/store/undo
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2 r4/.hg/tags.cache
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2 r4/.hg/undo.branch
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2 r4/.hg/undo.desc
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2 r4/.hg/undo.dirstate
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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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