#require hardlink

#require hardlink-whitelisted

This test is similar to test-hardlinks.t, but will only run on some filesystems

that we are sure to have known good hardlink supports (see issue4546 for an

example where the filesystem claims hardlink support but is actually

problematic).

  $ cat > nlinks.py <<EOF

  > import sys

  > from mercurial import util

  > for f in sorted(sys.stdin.readlines()):

  >     f = f[:-1]

  >     print util.nlinks(f), f

  > EOF

  $ nlinksdir()

  > {

  >     find $1 -type f | python $TESTTMP/nlinks.py

  > }

Some implementations of cp can't create hardlinks (replaces 'cp -al' on Linux):

  $ cat > linkcp.py <<EOF

  > from mercurial import util

  > import sys

  > util.copyfiles(sys.argv[1], 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

  1 r1/.hg/store/phaseroots

  1 r1/.hg/store/undo

  1 r1/.hg/store/undo.backup.fncache

  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

  linking: 2

  linking: 3

  linking: 4

  linking: 5

  linking: 6

  linking: 7

  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

  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

  1 r1/.hg/store/phaseroots

  1 r1/.hg/store/undo

  1 r1/.hg/store/undo.backup.fncache

  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

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

  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("%s\n" % str(x))

  >>> 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

  1 r3/.hg/store/phaseroots

  1 r3/.hg/store/undo

  1 r3/.hg/store/undo.backup.fncache

  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

  2 files, 2 changesets, 2 total revisions

  $ cd r3

  $ hg push

  pushing to $TESTTMP/r1 (glob)

  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

  2 r2/.hg/store/fncache

  $ hg -R r2 verify

  checking changesets

  checking manifests

  crosschecking files in changesets and manifests

  checking files

  2 files, 2 changesets, 2 total revisions

  $ 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

  2 r2/.hg/store/fncache

  $ cd r3

  $ hg tip --template '{rev}:{node|short}\n'

  11:a6451b6bc41f

  $ echo bla > f1

  $ hg ci -m1

  $ cd ..

Create hardlinked copy r4 of r3 (on Linux, we would call 'cp -al'):

  $ linkcp r3 r4

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-served

  2 r4/.hg/cache/checkisexec

  3 r4/.hg/cache/checklink (?)

  ? r4/.hg/cache/checklink-target (glob)

  2 r4/.hg/cache/checknoexec

  2 r4/.hg/cache/rbc-names-v1

  2 r4/.hg/cache/rbc-revs-v1

  2 r4/.hg/dirstate

  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/fncache

  2 r4/.hg/store/phaseroots

  2 r4/.hg/store/undo

  2 r4/.hg/store/undo.backup.fncache

  2 r4/.hg/store/undo.backup.phaseroots

  2 r4/.hg/store/undo.backupfiles

  2 r4/.hg/store/undo.phaseroots

  4 r4/.hg/undo.backup.dirstate

  2 r4/.hg/undo.bookmarks

  2 r4/.hg/undo.branch

  2 r4/.hg/undo.desc

  4 r4/.hg/undo.dirstate

  2 r4/d1/data1

  2 r4/d1/f2

  2 r4/f1

Update back to revision 11 in r4 should break hardlink of file f1:

  $ hg -R r4 up 11

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ nlinksdir r4

  2 r4/.hg/00changelog.i

  1 r4/.hg/branch

  2 r4/.hg/cache/branch2-served

  2 r4/.hg/cache/checkisexec

  2 r4/.hg/cache/checklink-target

  2 r4/.hg/cache/checknoexec

  2 r4/.hg/cache/rbc-names-v1

  2 r4/.hg/cache/rbc-revs-v1

  1 r4/.hg/dirstate

  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/fncache

  2 r4/.hg/store/phaseroots

  2 r4/.hg/store/undo

  2 r4/.hg/store/undo.backup.fncache

  2 r4/.hg/store/undo.backup.phaseroots

  2 r4/.hg/store/undo.backupfiles

  2 r4/.hg/store/undo.phaseroots

  4 r4/.hg/undo.backup.dirstate

  2 r4/.hg/undo.bookmarks

  2 r4/.hg/undo.branch

  2 r4/.hg/undo.desc

  4 r4/.hg/undo.dirstate

  2 r4/d1/data1

  2 r4/d1/f2

  1 r4/f1

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 ..