Set vars:

  $ CONTRIBDIR=$TESTDIR/../contrib

Prepare repo-a:

  $ hg init repo-a

  $ cd repo-a

  $ echo this is file a > a

  $ hg add a

  $ hg commit -m first

  $ echo adding to file a >> a

  $ hg commit -m second

  $ echo adding more to file a >> a

  $ hg commit -m third

  $ hg verify

  checking changesets

  checking manifests

  crosschecking files in changesets and manifests

  checking files

  1 files, 3 changesets, 3 total revisions

Dumping revlog of file a to stdout:

  $ python $CONTRIBDIR/dumprevlog .hg/store/data/a.i

  file: .hg/store/data/a.i

  node: 183d2312b35066fb6b3b449b84efc370d50993d0

  linkrev: 0

  parents: 0000000000000000000000000000000000000000 0000000000000000000000000000000000000000

  length: 15

  -start-

  this is file a

  -end-

  node: b1047953b6e6b633c0d8197eaa5116fbdfd3095b

  linkrev: 1

  parents: 183d2312b35066fb6b3b449b84efc370d50993d0 0000000000000000000000000000000000000000

  length: 32

  -start-

  this is file a

  adding to file a

  -end-

  node: 8c4fd1f7129b8cdec6c7f58bf48fb5237a4030c1

  linkrev: 2

  parents: b1047953b6e6b633c0d8197eaa5116fbdfd3095b 0000000000000000000000000000000000000000

  length: 54

  -start-

  this is file a

  adding to file a

  adding more to file a

  -end-

Dump all revlogs to file repo.dump:

  $ find .hg/store -name "*.i" | sort | xargs python $CONTRIBDIR/dumprevlog > ../repo.dump

  $ cd ..

Undumping into repo-b:

  $ hg init repo-b

  $ cd repo-b

  $ python $CONTRIBDIR/undumprevlog < ../repo.dump

  .hg/store/00changelog.i

  .hg/store/00manifest.i

  .hg/store/data/a.i

  $ cd ..

Rebuild fncache with clone --pull:

  $ hg clone --pull -U repo-b repo-c

  requesting all changes

  adding changesets

  adding manifests

  adding file changes

  added 3 changesets with 3 changes to 1 files

Verify:

  $ hg -R repo-c verify

  checking changesets

  checking manifests

  crosschecking files in changesets and manifests

  checking files

  1 files, 3 changesets, 3 total revisions

Compare repos:

  $ hg -R repo-c incoming repo-a

  comparing with repo-a

  searching for changes

  no changes found

  [1]

  $ hg -R repo-a incoming repo-c

  comparing with repo-c

  searching for changes

  no changes found

  [1]