view tests/test-treemanifest.t @ 42044:bb271ec2fbfb

compression: introduce a `storage.revlog.zstd.level` configuration

This option control the zstd compression level used when compressing revlog
chunk. The usage of zstd for revlog compression has not graduated from
experimental yet, but we intend to fix that soon.

The option name for the compression level is more straight forward to pick, so
this changesets comes first.  Having a dedicated option for each compression
engine is useful because they don't support the same range of values.

I ran the same measurement as for the zlib compression level (in the parent
changesets). The variation in repository size is stay mostly in the same (small)
range. The "read/write" performance see smallish variation, but are overall much
better than zlib. Write performance show the same tend of having better write
performance for when reaching high-end compression.

Again, we don't intend to change the default zstd compression level (currently:
3) in this series. However this is worth investigating in the future.

The Performance comparison of zlib vs zstd is quite impressive. The repository
size stay in the same range, but the performance are much better in all
situations.

Comparison summary
==================

We are looking at:
- performance range for zlib
- performance range for zstd
- comparison of default zstd (level-3) to default zlib (level 6)
- comparison of the slowest zstd time to the fastest zlib time

Read performance:
-----------------
          |           zlib          |           zstd          | cmp | f2s
mercurial |   0.170159 -   0.189219 |   0.144127 -   0.149624 | 80% | 88%
pypy      |   2.679217 -   2.768691 |   1.532317 -   1.705044 | 60% | 63%
netbeans  | 122.477027 - 141.620281 |  72.996346 -  89.731560 | 58% | 73%
mozilla   | 147.867662 - 170.572118 |  91.700995 - 105.853099 | 56% | 71%

Write performance:
------------------
          |           zlib          |           zstd          | cmp | f2s
mercurial |  53.250304 - 56.2936129 |  40.877025 -  45.677286 | 75% | 86%
pypy      | 460.721984 - 476.589918 | 270.545409 - 301.002219 | 63% | 65%
netbeans  | 520.560316 - 715.930400 | 370.356311 - 428.329652 | 55% | 82%
mozilla   | 739.803002 - 987.056093 | 505.152906 - 591.930683 | 57% | 80%

Raw data
--------

repo      alg lvl  .hg/store size  00manifest.d read       write

mercurial zlib  1      49,402,813     5,963,475   0.170159  53.250304
mercurial zlib  6      47,197,397     5,875,730   0.182820  56.264320
mercurial zlib  9      47,121,596     5,849,781   0.189219  56.293612

mercurial zstd  1      49,737,084     5,966,355   0.144127  40.877025
mercurial zstd  3      48,961,867     5,895,208   0.146376  42.268142
mercurial zstd  5      48,200,592     5,938,676   0.149624  43.162875
mercurial zstd 10      47,833,520     5,913,353   0.145185  44.012489
mercurial zstd 15      47,314,604     5,728,679   0.147686  45.677286
mercurial zstd 20      47,330,502     5,830,539   0.145789  45.025407
mercurial zstd 22      47,330,076     5,830,539   0.143996  44.690460


pypy      zlib  1     370,830,572    28,462,425   2.679217 460.721984
pypy      zlib  6     340,112,317    27,648,747   2.768691 467.537158
pypy      zlib  9     338,360,736    27,639,003   2.763495 476.589918

pypy      zstd  1     362,377,479    27,916,214   1.532317 270.545409
pypy      zstd  3     354,137,693    27,905,988   1.686718 294.951509
pypy      zstd  5     342,640,043    27,655,774   1.705044 301.002219
pypy      zstd 10     334,224,327    27,164,493   1.567287 285.186239
pypy      zstd 15     329,000,363    26,645,965   1.637729 299.561332
pypy      zstd 20     324,534,039    26,199,547   1.526813 302.149827
pypy      zstd 22     324,530,595    26,198,932   1.525718 307.821218


netbeans  zlib  1   1,281,847,810   165,495,457 122.477027 520.560316
netbeans  zlib  6   1,205,284,353   159,161,207 139.876147 715.930400
netbeans  zlib  9   1,197,135,671   155,034,586 141.620281 678.297064

netbeans  zstd  1   1,259,581,737   160,840,613  72.996346 370.356311
netbeans  zstd  3   1,232,978,122   157,691,551  81.622317 396.733087
netbeans  zstd  5   1,208,034,075   160,246,880  83.080549 364.342626
netbeans  zstd 10   1,188,624,176   156,083,417  79.323935 403.594602
netbeans  zstd 15   1,176,973,589   153,859,477  89.731560 428.329652
netbeans  zstd 20   1,162,958,258   151,147,535  82.842667 392.335349
netbeans  zstd 22   1,162,707,029   151,150,220  82.565695 402.840655


mozilla   zlib  1   2,775,497,186   298,527,987 147.867662 751.263721
mozilla   zlib  6   2,596,856,420   286,597,671 170.572118 987.056093
mozilla   zlib  9   2,587,542,494   287,018,264 163.622338 739.803002

mozilla   zstd  1   2,723,159,348   286,617,532  91.700995 570.042751
mozilla   zstd  3   2,665,055,001   286,152,013  95.240155 561.412805
mozilla   zstd  5   2,607,819,817   288,060,030 101.978048 505.152906
mozilla   zstd 10   2,558,761,085   283,967,648 104.113481 497.771202
mozilla   zstd 15   2,526,216,060   275,581,300 105.853099 591.930683
mozilla   zstd 20   2,485,114,806   266,478,859  95.268795 576.515389
mozilla   zstd 22   2,484,869,080   266,456,505  94.429282 572.785537

  $ cat << EOF >> $HGRCPATH
  > [ui]
  > ssh="$PYTHON" "$TESTDIR/dummyssh"
  > EOF

Set up repo

  $ hg --config experimental.treemanifest=True init repo
  $ cd repo

Requirements get set on init

  $ grep treemanifest .hg/requires
  treemanifest

Without directories, looks like any other repo

  $ echo 0 > a
  $ echo 0 > b
  $ hg ci -Aqm initial
  $ hg debugdata -m 0
  a\x00362fef284ce2ca02aecc8de6d5e8a1c3af0556fe (esc)
  b\x00362fef284ce2ca02aecc8de6d5e8a1c3af0556fe (esc)

Submanifest is stored in separate revlog

  $ mkdir dir1
  $ echo 1 > dir1/a
  $ echo 1 > dir1/b
  $ echo 1 > e
  $ hg ci -Aqm 'add dir1'
  $ hg debugdata -m 1
  a\x00362fef284ce2ca02aecc8de6d5e8a1c3af0556fe (esc)
  b\x00362fef284ce2ca02aecc8de6d5e8a1c3af0556fe (esc)
  dir1\x008b3ffd73f901e83304c83d33132c8e774ceac44et (esc)
  e\x00b8e02f6433738021a065f94175c7cd23db5f05be (esc)
  $ hg debugdata --dir dir1 0
  a\x00b8e02f6433738021a065f94175c7cd23db5f05be (esc)
  b\x00b8e02f6433738021a065f94175c7cd23db5f05be (esc)

Can add nested directories

  $ mkdir dir1/dir1
  $ echo 2 > dir1/dir1/a
  $ echo 2 > dir1/dir1/b
  $ mkdir dir1/dir2
  $ echo 2 > dir1/dir2/a
  $ echo 2 > dir1/dir2/b
  $ hg ci -Aqm 'add dir1/dir1'
  $ hg files -r .
  a
  b
  dir1/a
  dir1/b
  dir1/dir1/a
  dir1/dir1/b
  dir1/dir2/a
  dir1/dir2/b
  e

The manifest command works

  $ hg manifest
  a
  b
  dir1/a
  dir1/b
  dir1/dir1/a
  dir1/dir1/b
  dir1/dir2/a
  dir1/dir2/b
  e

Revision is not created for unchanged directory

  $ mkdir dir2
  $ echo 3 > dir2/a
  $ hg add dir2
  adding dir2/a
  $ hg debugindex --dir dir1 > before
  $ hg ci -qm 'add dir2'
  $ hg debugindex --dir dir1 > after
  $ diff before after
  $ rm before after

Removing directory does not create an revlog entry

  $ hg rm dir1/dir1
  removing dir1/dir1/a
  removing dir1/dir1/b
  $ hg debugindex --dir dir1/dir1 > before
  $ hg ci -qm 'remove dir1/dir1'
  $ hg debugindex --dir dir1/dir1 > after
  $ diff before after
  $ rm before after

Check that hg files (calls treemanifest.walk()) works
without loading all directory revlogs

  $ hg co 'desc("add dir2")'
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ mv .hg/store/meta/dir2 .hg/store/meta/dir2-backup
  $ hg files -r . dir1
  dir1/a
  dir1/b
  dir1/dir1/a
  dir1/dir1/b
  dir1/dir2/a
  dir1/dir2/b

Check that status between revisions works (calls treemanifest.matches())
without loading all directory revlogs

  $ hg status --rev 'desc("add dir1")' --rev . dir1
  A dir1/dir1/a
  A dir1/dir1/b
  A dir1/dir2/a
  A dir1/dir2/b
  $ mv .hg/store/meta/dir2-backup .hg/store/meta/dir2

Merge creates 2-parent revision of directory revlog

  $ echo 5 > dir1/a
  $ hg ci -Aqm 'modify dir1/a'
  $ hg co '.^'
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo 6 > dir1/b
  $ hg ci -Aqm 'modify dir1/b'
  $ hg merge 'desc("modify dir1/a")'
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ hg ci -m 'conflict-free merge involving dir1/'
  $ cat dir1/a
  5
  $ cat dir1/b
  6
  $ hg debugindex --dir dir1
     rev linkrev nodeid       p1           p2
       0       1 8b3ffd73f901 000000000000 000000000000
       1       2 68e9d057c5a8 8b3ffd73f901 000000000000
       2       4 4698198d2624 68e9d057c5a8 000000000000
       3       5 44844058ccce 68e9d057c5a8 000000000000
       4       6 bf3d9b744927 68e9d057c5a8 000000000000
       5       7 dde7c0af2a03 bf3d9b744927 44844058ccce

Merge keeping directory from parent 1 does not create revlog entry. (Note that
dir1's manifest does change, but only because dir1/a's filelog changes.)

  $ hg co 'desc("add dir2")'
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo 8 > dir2/a
  $ hg ci -m 'modify dir2/a'
  created new head

  $ hg debugindex --dir dir2 > before
  $ hg merge 'desc("modify dir1/a")'
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ hg revert -r 'desc("modify dir2/a")' .
  reverting dir1/a
  $ hg ci -m 'merge, keeping parent 1'
  $ hg debugindex --dir dir2 > after
  $ diff before after
  $ rm before after

Merge keeping directory from parent 2 does not create revlog entry. (Note that
dir2's manifest does change, but only because dir2/a's filelog changes.)

  $ hg co 'desc("modify dir2/a")'
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg debugindex --dir dir1 > before
  $ hg merge 'desc("modify dir1/a")'
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ hg revert -r 'desc("modify dir1/a")' .
  reverting dir2/a
  $ hg ci -m 'merge, keeping parent 2'
  created new head
  $ hg debugindex --dir dir1 > after
  $ diff before after
  $ rm before after

Create flat source repo for tests with mixed flat/tree manifests

  $ cd ..
  $ hg init repo-flat
  $ cd repo-flat

Create a few commits with flat manifest

  $ echo 0 > a
  $ echo 0 > b
  $ echo 0 > e
  $ for d in dir1 dir1/dir1 dir1/dir2 dir2
  > do
  >   mkdir $d
  >   echo 0 > $d/a
  >   echo 0 > $d/b
  > done
  $ hg ci -Aqm initial

  $ echo 1 > a
  $ echo 1 > dir1/a
  $ echo 1 > dir1/dir1/a
  $ hg ci -Aqm 'modify on branch 1'

  $ hg co 0
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo 2 > b
  $ echo 2 > dir1/b
  $ echo 2 > dir1/dir1/b
  $ hg ci -Aqm 'modify on branch 2'

  $ hg merge 1
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ hg ci -m 'merge of flat manifests to new flat manifest'

  $ hg serve -p $HGPORT -d --pid-file=hg.pid --errorlog=errors.log
  $ cat hg.pid >> $DAEMON_PIDS

Create clone with tree manifests enabled

  $ cd ..
  $ hg clone --config experimental.treemanifest=1 \
  >   http://localhost:$HGPORT repo-mixed -r 1
  adding changesets
  adding manifests
  adding file changes
  added 2 changesets with 14 changes to 11 files
  new changesets 5b02a3e8db7e:581ef6037d8b
  updating to branch default
  11 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd repo-mixed
  $ test -d .hg/store/meta
  [1]
  $ grep treemanifest .hg/requires
  treemanifest

Should be possible to push updates from flat to tree manifest repo

  $ hg -R ../repo-flat push ssh://user@dummy/repo-mixed
  pushing to ssh://user@dummy/repo-mixed
  searching for changes
  remote: adding changesets
  remote: adding manifests
  remote: adding file changes
  remote: added 2 changesets with 3 changes to 3 files

Commit should store revlog per directory

  $ hg co 1
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo 3 > a
  $ echo 3 > dir1/a
  $ echo 3 > dir1/dir1/a
  $ hg ci -m 'first tree'
  created new head
  $ find .hg/store/meta | sort
  .hg/store/meta
  .hg/store/meta/dir1
  .hg/store/meta/dir1/00manifest.i
  .hg/store/meta/dir1/dir1
  .hg/store/meta/dir1/dir1/00manifest.i
  .hg/store/meta/dir1/dir2
  .hg/store/meta/dir1/dir2/00manifest.i
  .hg/store/meta/dir2
  .hg/store/meta/dir2/00manifest.i

Merge of two trees

  $ hg co 2
  6 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg merge 1
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ hg ci -m 'merge of flat manifests to new tree manifest'
  created new head
  $ hg diff -r 3

Parent of tree root manifest should be flat manifest, and two for merge

  $ hg debugindex -m
     rev linkrev nodeid       p1           p2
       0       0 40536115ed9e 000000000000 000000000000
       1       1 f3376063c255 40536115ed9e 000000000000
       2       2 5d9b9da231a2 40536115ed9e 000000000000
       3       3 d17d663cbd8a 5d9b9da231a2 f3376063c255
       4       4 51e32a8c60ee f3376063c255 000000000000
       5       5 cc5baa78b230 5d9b9da231a2 f3376063c255


Status across flat/tree boundary should work

  $ hg status --rev '.^' --rev .
  M a
  M dir1/a
  M dir1/dir1/a


Turning off treemanifest config has no effect

  $ hg debugindex --dir dir1
     rev linkrev nodeid       p1           p2
       0       4 064927a0648a 000000000000 000000000000
       1       5 25ecb8cb8618 000000000000 000000000000
  $ echo 2 > dir1/a
  $ hg --config experimental.treemanifest=False ci -qm 'modify dir1/a'
  $ hg debugindex --dir dir1
     rev linkrev nodeid       p1           p2
       0       4 064927a0648a 000000000000 000000000000
       1       5 25ecb8cb8618 000000000000 000000000000
       2       6 5b16163a30c6 25ecb8cb8618 000000000000

Stripping and recovering changes should work

  $ hg st --change tip
  M dir1/a
  $ hg --config extensions.strip= strip tip
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  saved backup bundle to $TESTTMP/repo-mixed/.hg/strip-backup/51cfd7b1e13b-78a2f3ed-backup.hg
  $ hg debugindex --dir dir1
     rev linkrev nodeid       p1           p2
       0       4 064927a0648a 000000000000 000000000000
       1       5 25ecb8cb8618 000000000000 000000000000

#if repobundlerepo
  $ hg incoming .hg/strip-backup/*
  comparing with .hg/strip-backup/*-backup.hg (glob)
  searching for changes
  changeset:   6:51cfd7b1e13b
  tag:         tip
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     modify dir1/a
  
#endif

  $ hg unbundle .hg/strip-backup/*
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files
  new changesets 51cfd7b1e13b (1 drafts)
  (run 'hg update' to get a working copy)
  $ hg --config extensions.strip= strip tip
  saved backup bundle to $TESTTMP/repo-mixed/.hg/strip-backup/*-backup.hg (glob)
  $ hg unbundle -q .hg/strip-backup/*
  $ hg debugindex --dir dir1
     rev linkrev nodeid       p1           p2
       0       4 064927a0648a 000000000000 000000000000
       1       5 25ecb8cb8618 000000000000 000000000000
       2       6 5b16163a30c6 25ecb8cb8618 000000000000
  $ hg st --change tip
  M dir1/a

Shelving and unshelving should work

  $ echo foo >> dir1/a
  $ hg --config extensions.shelve= shelve
  shelved as default
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg --config extensions.shelve= unshelve
  unshelving change 'default'
  $ hg diff --nodates
  diff -r 708a273da119 dir1/a
  --- a/dir1/a
  +++ b/dir1/a
  @@ -1,1 +1,2 @@
   1
  +foo

Pushing from treemanifest repo to an empty repo makes that a treemanifest repo

  $ cd ..
  $ hg init empty-repo
  $ cat << EOF >> empty-repo/.hg/hgrc
  > [experimental]
  > changegroup3=yes
  > EOF
  $ grep treemanifest empty-repo/.hg/requires
  [1]
  $ hg push -R repo -r 0 empty-repo
  pushing to empty-repo
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 2 changes to 2 files
  $ grep treemanifest empty-repo/.hg/requires
  treemanifest

Pushing to an empty repo works

  $ hg --config experimental.treemanifest=1 init clone
  $ grep treemanifest clone/.hg/requires
  treemanifest
  $ hg push -R repo clone
  pushing to clone
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 11 changesets with 15 changes to 10 files (+3 heads)
  $ grep treemanifest clone/.hg/requires
  treemanifest
  $ hg -R clone verify
  checking changesets
  checking manifests
  checking directory manifests
  crosschecking files in changesets and manifests
  checking files
  checked 11 changesets with 15 changes to 10 files

Create deeper repo with tree manifests.

  $ hg --config experimental.treemanifest=True init deeprepo
  $ cd deeprepo

  $ mkdir .A
  $ mkdir b
  $ mkdir b/bar
  $ mkdir b/bar/orange
  $ mkdir b/bar/orange/fly
  $ mkdir b/foo
  $ mkdir b/foo/apple
  $ mkdir b/foo/apple/bees

  $ touch .A/one.txt
  $ touch .A/two.txt
  $ touch b/bar/fruits.txt
  $ touch b/bar/orange/fly/gnat.py
  $ touch b/bar/orange/fly/housefly.txt
  $ touch b/foo/apple/bees/flower.py
  $ touch c.txt
  $ touch d.py

  $ hg ci -Aqm 'initial'

  $ echo >> .A/one.txt
  $ echo >> .A/two.txt
  $ echo >> b/bar/fruits.txt
  $ echo >> b/bar/orange/fly/gnat.py
  $ echo >> b/bar/orange/fly/housefly.txt
  $ echo >> b/foo/apple/bees/flower.py
  $ echo >> c.txt
  $ echo >> d.py
  $ hg ci -Aqm 'second'

We'll see that visitdir works by removing some treemanifest revlogs and running
the files command with various parameters.

Test files from the root.

  $ hg files -r .
  .A/one.txt
  .A/two.txt
  b/bar/fruits.txt
  b/bar/orange/fly/gnat.py
  b/bar/orange/fly/housefly.txt
  b/foo/apple/bees/flower.py
  c.txt
  d.py

Excludes with a glob should not exclude everything from the glob's root

  $ hg files -r . -X 'b/fo?' b
  b/bar/fruits.txt
  b/bar/orange/fly/gnat.py
  b/bar/orange/fly/housefly.txt
  $ cp -R .hg/store .hg/store-copy

Test files for a subdirectory.

#if reporevlogstore
  $ rm -r .hg/store/meta/~2e_a
#endif
#if reposimplestore
  $ rm -r .hg/store/meta/._a
#endif
  $ hg files -r . b
  b/bar/fruits.txt
  b/bar/orange/fly/gnat.py
  b/bar/orange/fly/housefly.txt
  b/foo/apple/bees/flower.py
  $ hg diff -r '.^' -r . --stat b
   b/bar/fruits.txt              |  1 +
   b/bar/orange/fly/gnat.py      |  1 +
   b/bar/orange/fly/housefly.txt |  1 +
   b/foo/apple/bees/flower.py    |  1 +
   4 files changed, 4 insertions(+), 0 deletions(-)
  $ cp -R .hg/store-copy/. .hg/store

Test files with just includes and excludes.

#if reporevlogstore
  $ rm -r .hg/store/meta/~2e_a
#endif
#if reposimplestore
  $ rm -r .hg/store/meta/._a
#endif
  $ rm -r .hg/store/meta/b/bar/orange/fly
  $ rm -r .hg/store/meta/b/foo/apple/bees
  $ hg files -r . -I path:b/bar -X path:b/bar/orange/fly -I path:b/foo -X path:b/foo/apple/bees
  b/bar/fruits.txt
  $ hg diff -r '.^' -r . --stat -I path:b/bar -X path:b/bar/orange/fly -I path:b/foo -X path:b/foo/apple/bees
   b/bar/fruits.txt |  1 +
   1 files changed, 1 insertions(+), 0 deletions(-)
  $ cp -R .hg/store-copy/. .hg/store

Test files for a subdirectory, excluding a directory within it.

#if reporevlogstore
  $ rm -r .hg/store/meta/~2e_a
#endif
#if reposimplestore
  $ rm -r .hg/store/meta/._a
#endif
  $ rm -r .hg/store/meta/b/foo
  $ hg files -r . -X path:b/foo b
  b/bar/fruits.txt
  b/bar/orange/fly/gnat.py
  b/bar/orange/fly/housefly.txt
  $ hg diff -r '.^' -r . --stat -X path:b/foo b
   b/bar/fruits.txt              |  1 +
   b/bar/orange/fly/gnat.py      |  1 +
   b/bar/orange/fly/housefly.txt |  1 +
   3 files changed, 3 insertions(+), 0 deletions(-)
  $ cp -R .hg/store-copy/. .hg/store

Test files for a sub directory, including only a directory within it, and
including an unrelated directory.

#if reporevlogstore
  $ rm -r .hg/store/meta/~2e_a
#endif
#if reposimplestore
  $ rm -r .hg/store/meta/._a
#endif
  $ rm -r .hg/store/meta/b/foo
  $ hg files -r . -I path:b/bar/orange -I path:a b
  b/bar/orange/fly/gnat.py
  b/bar/orange/fly/housefly.txt
  $ hg diff -r '.^' -r . --stat -I path:b/bar/orange -I path:a b
   b/bar/orange/fly/gnat.py      |  1 +
   b/bar/orange/fly/housefly.txt |  1 +
   2 files changed, 2 insertions(+), 0 deletions(-)
  $ cp -R .hg/store-copy/. .hg/store

Test files for a pattern, including a directory, and excluding a directory
within that.

#if reporevlogstore
  $ rm -r .hg/store/meta/~2e_a
#endif
#if reposimplestore
  $ rm -r .hg/store/meta/._a
#endif
  $ rm -r .hg/store/meta/b/foo
  $ rm -r .hg/store/meta/b/bar/orange
  $ hg files -r . glob:**.txt -I path:b/bar -X path:b/bar/orange
  b/bar/fruits.txt
  $ hg diff -r '.^' -r . --stat glob:**.txt -I path:b/bar -X path:b/bar/orange
   b/bar/fruits.txt |  1 +
   1 files changed, 1 insertions(+), 0 deletions(-)
  $ cp -R .hg/store-copy/. .hg/store

Add some more changes to the deep repo
  $ echo narf >> b/bar/fruits.txt
  $ hg ci -m narf
  $ echo troz >> b/bar/orange/fly/gnat.py
  $ hg ci -m troz

Verify works
  $ hg verify
  checking changesets
  checking manifests
  checking directory manifests
  crosschecking files in changesets and manifests
  checking files
  checked 4 changesets with 18 changes to 8 files

#if repofncache
Dirlogs are included in fncache
  $ grep meta/.A/00manifest.i .hg/store/fncache
  meta/.A/00manifest.i

Rebuilt fncache includes dirlogs
  $ rm .hg/store/fncache
  $ hg debugrebuildfncache
  adding data/.A/one.txt.i
  adding data/.A/two.txt.i
  adding data/b/bar/fruits.txt.i
  adding data/b/bar/orange/fly/gnat.py.i
  adding data/b/bar/orange/fly/housefly.txt.i
  adding data/b/foo/apple/bees/flower.py.i
  adding data/c.txt.i
  adding data/d.py.i
  adding meta/.A/00manifest.i
  adding meta/b/00manifest.i
  adding meta/b/bar/00manifest.i
  adding meta/b/bar/orange/00manifest.i
  adding meta/b/bar/orange/fly/00manifest.i
  adding meta/b/foo/00manifest.i
  adding meta/b/foo/apple/00manifest.i
  adding meta/b/foo/apple/bees/00manifest.i
  16 items added, 0 removed from fncache
#endif

Finish first server
  $ killdaemons.py

Back up the recently added revlogs
  $ cp -R .hg/store .hg/store-newcopy

Verify reports missing dirlog
  $ rm .hg/store/meta/b/00manifest.*
  $ hg verify
  checking changesets
  checking manifests
  checking directory manifests
   0: empty or missing b/
   b/@0: parent-directory manifest refers to unknown revision 67688a370455
   b/@1: parent-directory manifest refers to unknown revision f065da70369e
   b/@2: parent-directory manifest refers to unknown revision ac0d30948e0b
   b/@3: parent-directory manifest refers to unknown revision 367152e6af28
  warning: orphan data file 'meta/b/bar/00manifest.i' (reporevlogstore !)
  warning: orphan data file 'meta/b/bar/orange/00manifest.i' (reporevlogstore !)
  warning: orphan data file 'meta/b/bar/orange/fly/00manifest.i' (reporevlogstore !)
  warning: orphan data file 'meta/b/foo/00manifest.i' (reporevlogstore !)
  warning: orphan data file 'meta/b/foo/apple/00manifest.i' (reporevlogstore !)
  warning: orphan data file 'meta/b/foo/apple/bees/00manifest.i' (reporevlogstore !)
  crosschecking files in changesets and manifests
   b/bar/fruits.txt@0: in changeset but not in manifest
   b/bar/orange/fly/gnat.py@0: in changeset but not in manifest
   b/bar/orange/fly/housefly.txt@0: in changeset but not in manifest
   b/foo/apple/bees/flower.py@0: in changeset but not in manifest
  checking files
  checked 4 changesets with 18 changes to 8 files
  6 warnings encountered! (reporevlogstore !)
  9 integrity errors encountered!
  (first damaged changeset appears to be 0)
  [1]
  $ cp -R .hg/store-newcopy/. .hg/store

Verify reports missing dirlog entry
  $ mv -f .hg/store-copy/meta/b/00manifest.* .hg/store/meta/b/
  $ hg verify
  checking changesets
  checking manifests
  checking directory manifests
   b/@2: parent-directory manifest refers to unknown revision ac0d30948e0b
   b/@3: parent-directory manifest refers to unknown revision 367152e6af28
   b/bar/@?: rev 2 points to unexpected changeset 2
   b/bar/@?: 44d7e1146e0d not in parent-directory manifest
   b/bar/@?: rev 3 points to unexpected changeset 3
   b/bar/@?: 70b10c6b17b7 not in parent-directory manifest
   b/bar/orange/@?: rev 2 points to unexpected changeset 3
   (expected None)
   b/bar/orange/fly/@?: rev 2 points to unexpected changeset 3
   (expected None)
  crosschecking files in changesets and manifests
  checking files
  checked 4 changesets with 18 changes to 8 files
  2 warnings encountered!
  8 integrity errors encountered!
  (first damaged changeset appears to be 2)
  [1]
  $ cp -R .hg/store-newcopy/. .hg/store

Test cloning a treemanifest repo over http.
  $ hg serve -p $HGPORT -d --pid-file=hg.pid --errorlog=errors.log
  $ cat hg.pid >> $DAEMON_PIDS
  $ cd ..
We can clone even with the knob turned off and we'll get a treemanifest repo.
  $ hg clone --config experimental.treemanifest=False \
  >   --config experimental.changegroup3=True \
  >   http://localhost:$HGPORT deepclone
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 4 changesets with 18 changes to 8 files
  new changesets 775704be6f52:523e5c631710
  updating to branch default
  8 files updated, 0 files merged, 0 files removed, 0 files unresolved
No server errors.
  $ cat deeprepo/errors.log
requires got updated to include treemanifest
  $ cat deepclone/.hg/requires | grep treemanifest
  treemanifest
Tree manifest revlogs exist.
  $ find deepclone/.hg/store/meta | sort
  deepclone/.hg/store/meta
  deepclone/.hg/store/meta/._a (reposimplestore !)
  deepclone/.hg/store/meta/._a/00manifest.i (reposimplestore !)
  deepclone/.hg/store/meta/b
  deepclone/.hg/store/meta/b/00manifest.i
  deepclone/.hg/store/meta/b/bar
  deepclone/.hg/store/meta/b/bar/00manifest.i
  deepclone/.hg/store/meta/b/bar/orange
  deepclone/.hg/store/meta/b/bar/orange/00manifest.i
  deepclone/.hg/store/meta/b/bar/orange/fly
  deepclone/.hg/store/meta/b/bar/orange/fly/00manifest.i
  deepclone/.hg/store/meta/b/foo
  deepclone/.hg/store/meta/b/foo/00manifest.i
  deepclone/.hg/store/meta/b/foo/apple
  deepclone/.hg/store/meta/b/foo/apple/00manifest.i
  deepclone/.hg/store/meta/b/foo/apple/bees
  deepclone/.hg/store/meta/b/foo/apple/bees/00manifest.i
  deepclone/.hg/store/meta/~2e_a (reporevlogstore !)
  deepclone/.hg/store/meta/~2e_a/00manifest.i (reporevlogstore !)
Verify passes.
  $ cd deepclone
  $ hg verify
  checking changesets
  checking manifests
  checking directory manifests
  crosschecking files in changesets and manifests
  checking files
  checked 4 changesets with 18 changes to 8 files
  $ cd ..

#if reporevlogstore
Create clones using old repo formats to use in later tests
  $ hg clone --config format.usestore=False \
  >   --config experimental.changegroup3=True \
  >   http://localhost:$HGPORT deeprepo-basicstore
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 4 changesets with 18 changes to 8 files
  new changesets 775704be6f52:523e5c631710
  updating to branch default
  8 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd deeprepo-basicstore
  $ grep store .hg/requires
  [1]
  $ hg serve -p $HGPORT1 -d --pid-file=hg.pid --errorlog=errors.log
  $ cat hg.pid >> $DAEMON_PIDS
  $ cd ..
  $ hg clone --config format.usefncache=False \
  >   --config experimental.changegroup3=True \
  >   http://localhost:$HGPORT deeprepo-encodedstore
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 4 changesets with 18 changes to 8 files
  new changesets 775704be6f52:523e5c631710
  updating to branch default
  8 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd deeprepo-encodedstore
  $ grep fncache .hg/requires
  [1]
  $ hg serve -p $HGPORT2 -d --pid-file=hg.pid --errorlog=errors.log
  $ cat hg.pid >> $DAEMON_PIDS
  $ cd ..

Local clone with basicstore
  $ hg clone -U deeprepo-basicstore local-clone-basicstore
  $ hg -R local-clone-basicstore verify
  checking changesets
  checking manifests
  checking directory manifests
  crosschecking files in changesets and manifests
  checking files
  checked 4 changesets with 18 changes to 8 files

Local clone with encodedstore
  $ hg clone -U deeprepo-encodedstore local-clone-encodedstore
  $ hg -R local-clone-encodedstore verify
  checking changesets
  checking manifests
  checking directory manifests
  crosschecking files in changesets and manifests
  checking files
  checked 4 changesets with 18 changes to 8 files

Local clone with fncachestore
  $ hg clone -U deeprepo local-clone-fncachestore
  $ hg -R local-clone-fncachestore verify
  checking changesets
  checking manifests
  checking directory manifests
  crosschecking files in changesets and manifests
  checking files
  checked 4 changesets with 18 changes to 8 files

Stream clone with basicstore
  $ hg clone --config experimental.changegroup3=True --stream -U \
  >   http://localhost:$HGPORT1 stream-clone-basicstore
  streaming all changes
  21 files to transfer, * of data (glob)
  transferred * in * seconds (*) (glob)
  $ hg -R stream-clone-basicstore verify
  checking changesets
  checking manifests
  checking directory manifests
  crosschecking files in changesets and manifests
  checking files
  checked 4 changesets with 18 changes to 8 files

Stream clone with encodedstore
  $ hg clone --config experimental.changegroup3=True --stream -U \
  >   http://localhost:$HGPORT2 stream-clone-encodedstore
  streaming all changes
  21 files to transfer, * of data (glob)
  transferred * in * seconds (*) (glob)
  $ hg -R stream-clone-encodedstore verify
  checking changesets
  checking manifests
  checking directory manifests
  crosschecking files in changesets and manifests
  checking files
  checked 4 changesets with 18 changes to 8 files

Stream clone with fncachestore
  $ hg clone --config experimental.changegroup3=True --stream -U \
  >   http://localhost:$HGPORT stream-clone-fncachestore
  streaming all changes
  22 files to transfer, * of data (glob)
  transferred * in * seconds (*) (glob)
  $ hg -R stream-clone-fncachestore verify
  checking changesets
  checking manifests
  checking directory manifests
  crosschecking files in changesets and manifests
  checking files
  checked 4 changesets with 18 changes to 8 files

Packed bundle
  $ hg -R deeprepo debugcreatestreamclonebundle repo-packed.hg
  writing 5330 bytes for 18 files
  bundle requirements: generaldelta, revlogv1, sparserevlog, treemanifest
  $ hg debugbundle --spec repo-packed.hg
  none-packed1;requirements%3Dgeneraldelta%2Crevlogv1%2Csparserevlog%2Ctreemanifest

#endif

Bundle with changegroup2 is not supported

  $ hg -R deeprepo bundle --all -t v2 deeprepo.bundle
  abort: repository does not support bundle version 02
  [255]

Pull does not include changegroup for manifest the client already has from
other branch

  $ mkdir grafted-dir-repo
  $ cd grafted-dir-repo
  $ hg --config experimental.treemanifest=1 init
  $ mkdir dir
  $ echo a > dir/file
  $ echo a > file
  $ hg ci -Am initial
  adding dir/file
  adding file
  $ echo b > dir/file
  $ hg ci -m updated
  $ hg co '.^'
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg revert -r tip dir/
  reverting dir/file
  $ echo b > file # to make sure root manifest is sent
  $ hg ci -m grafted
  created new head
  $ cd ..

  $ hg --config experimental.treemanifest=1 clone --pull -r 1 \
  >   grafted-dir-repo grafted-dir-repo-clone
  adding changesets
  adding manifests
  adding file changes
  added 2 changesets with 3 changes to 2 files
  new changesets d84f4c419457:09ab742f3b0f
  updating to branch default
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd grafted-dir-repo-clone
  $ hg pull -r 2
  pulling from $TESTTMP/grafted-dir-repo
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files (+1 heads)
  new changesets 73699489fb7c
  (run 'hg heads' to see heads, 'hg merge' to merge)

Committing a empty commit does not duplicate root treemanifest
  $ echo z >> z
  $ hg commit -Aqm 'pre-empty commit'
  $ hg rm z
  $ hg commit --amend -m 'empty commit'
  saved backup bundle to $TESTTMP/grafted-dir-repo-clone/.hg/strip-backup/cb99d5717cea-9e3b6b02-amend.hg
  $ hg log -r 'tip + tip^' -T '{manifest}\n'
  1:678d3574b88c
  1:678d3574b88c
  $ hg --config extensions.strip= strip -r . -q