Init repo1:

  $ hg init repo1

  $ cd repo1

  $ echo "some text" > a

  $ hg add

  adding a

  $ hg ci -m first

  $ cat .hg/store/fncache

  data/a.i

Testing a.i/b:

  $ mkdir a.i

  $ echo "some other text" > a.i/b

  $ hg add

  adding a.i/b

  $ hg ci -m second

  $ cat .hg/store/fncache

  data/a.i

  data/a.i.hg/b.i

Testing a.i.hg/c:

  $ mkdir a.i.hg

  $ echo "yet another text" > a.i.hg/c

  $ hg add

  adding a.i.hg/c

  $ hg ci -m third

  $ cat .hg/store/fncache

  data/a.i

  data/a.i.hg/b.i

  data/a.i.hg.hg/c.i

Testing verify:

  $ hg verify

  checking changesets

  checking manifests

  crosschecking files in changesets and manifests

  checking files

  3 files, 3 changesets, 3 total revisions

  $ rm .hg/store/fncache

  $ hg verify

  checking changesets

  checking manifests

  crosschecking files in changesets and manifests

  checking files

   data/a.i@0: missing revlog!

   data/a.i.hg/c.i@2: missing revlog!

   data/a.i/b.i@1: missing revlog!

  3 files, 3 changesets, 3 total revisions

  3 integrity errors encountered!

  (first damaged changeset appears to be 0)

  $ cd ..

Non store repo:

  $ hg --config format.usestore=False init foo

  $ cd foo

  $ mkdir tst.d

  $ echo foo > tst.d/foo

  $ hg ci -Amfoo

  adding tst.d/foo

  $ find .hg | sort

  .hg

  .hg/00changelog.i

  .hg/00manifest.i

  .hg/data

  .hg/data/tst.d.hg

  .hg/data/tst.d.hg/foo.i

  .hg/dirstate

  .hg/last-message.txt

  .hg/requires

  .hg/undo

  .hg/undo.branch

  .hg/undo.desc

  .hg/undo.dirstate

  $ cd ..

Non fncache repo:

  $ hg --config format.usefncache=False init bar

  $ cd bar

  $ mkdir tst.d

  $ echo foo > tst.d/Foo

  $ hg ci -Amfoo

  adding tst.d/Foo

  $ find .hg | sort

  .hg

  .hg/00changelog.i

  .hg/dirstate

  .hg/last-message.txt

  .hg/requires

  .hg/store

  .hg/store/00changelog.i

  .hg/store/00manifest.i

  .hg/store/data

  .hg/store/data/tst.d.hg

  .hg/store/data/tst.d.hg/_foo.i

  .hg/store/undo

  .hg/undo.branch

  .hg/undo.desc

  .hg/undo.dirstate

  $ cd ..