# HG changeset patch
# User Pierre-Yves David <pierre-yves.david@octobus.net>
# Date 2021-10-19 22:57:02
# Node ID bf11ff22a9afb5dde927ab9e6895fa4826cfc3ed
# Parent  e2836d08c88ca0d0f0c0f5af066e526769120306

dirstate-v2: freeze the on-disk format

It seems the format as reached a good balance. With a core of new capabilities
that motivated it initially and enough new feature and room for future
improvement to be a clear progress we can set a milestone for.

Having the format frozen will help the feature to get real life testing, outside
of the test suite.

The feature itself stay experimental but the config gains a new name to avoid
people enable non-frozen version by default.

If too many bugs are reported during the RC we might move the format back to
experimental and drop its support in future version (in favor of a new one)

Differential Revision: https://phab.mercurial-scm.org/D11709

diff --git a/mercurial/configitems.py b/mercurial/configitems.py
--- a/mercurial/configitems.py
+++ b/mercurial/configitems.py
@@ -1306,7 +1306,7 @@ coreconfigitem(
     # Enable this dirstate format *when creating a new repository*.
     # Which format to use for existing repos is controlled by .hg/requires
     b'format',
-    b'exp-dirstate-v2',
+    b'exp-rc-dirstate-v2',
     default=False,
     experimental=True,
 )
@@ -1880,7 +1880,7 @@ coreconfigitem(
     default=b'skip',
     experimental=True,
 )
-# experimental as long as format.exp-dirstate-v2 is.
+# experimental as long as format.exp-rc-dirstate-v2 is.
 coreconfigitem(
     b'storage',
     b'dirstate-v2.slow-path',
diff --git a/mercurial/localrepo.py b/mercurial/localrepo.py
--- a/mercurial/localrepo.py
+++ b/mercurial/localrepo.py
@@ -1189,7 +1189,7 @@ def resolverevlogstorevfsoptions(ui, req
             b"fast implementation."
         )
         hint = _(
-            b"check `hg help config.format.exp-dirstate-v2` " b"for details"
+            b"check `hg help config.format.exp-rc-dirstate-v2` " b"for details"
         )
         if not dirstate.HAS_FAST_DIRSTATE_V2:
             if slow_path == b'warn':
@@ -3630,9 +3630,9 @@ def newreporequirements(ui, createopts):
         if ui.configbool(b'format', b'sparse-revlog'):
             requirements.add(requirementsmod.SPARSEREVLOG_REQUIREMENT)
 
-    # experimental config: format.exp-dirstate-v2
+    # experimental config: format.exp-rc-dirstate-v2
     # Keep this logic in sync with `has_dirstate_v2()` in `tests/hghave.py`
-    if ui.configbool(b'format', b'exp-dirstate-v2'):
+    if ui.configbool(b'format', b'exp-rc-dirstate-v2'):
         requirements.add(requirementsmod.DIRSTATE_V2_REQUIREMENT)
 
     # experimental config: format.exp-use-copies-side-data-changeset
diff --git a/mercurial/requirements.py b/mercurial/requirements.py
--- a/mercurial/requirements.py
+++ b/mercurial/requirements.py
@@ -12,7 +12,7 @@ DOTENCODE_REQUIREMENT = b'dotencode'
 STORE_REQUIREMENT = b'store'
 FNCACHE_REQUIREMENT = b'fncache'
 
-DIRSTATE_V2_REQUIREMENT = b'exp-dirstate-v2'
+DIRSTATE_V2_REQUIREMENT = b'dirstate-v2'
 
 # When narrowing is finalized and no longer subject to format changes,
 # we should move this to just "narrow" or similar.
diff --git a/mercurial/upgrade_utils/actions.py b/mercurial/upgrade_utils/actions.py
--- a/mercurial/upgrade_utils/actions.py
+++ b/mercurial/upgrade_utils/actions.py
@@ -178,7 +178,9 @@ class dirstatev2(requirementformatvarian
 
     description = _(
         b'version 1 of the dirstate file format requires '
-        b'reading and parsing it all at once.'
+        b'reading and parsing it all at once.\n'
+        b'Version 2 has a better structure,'
+        b'better information and lighter update mechanism'
     )
 
     upgrademessage = _(b'"hg status" will be faster')
diff --git a/rust/hg-core/src/requirements.rs b/rust/hg-core/src/requirements.rs
--- a/rust/hg-core/src/requirements.rs
+++ b/rust/hg-core/src/requirements.rs
@@ -92,7 +92,7 @@ const SUPPORTED: &[&str] = &[
 
 // Copied from mercurial/requirements.py:
 
-pub(crate) const DIRSTATE_V2_REQUIREMENT: &str = "exp-dirstate-v2";
+pub(crate) const DIRSTATE_V2_REQUIREMENT: &str = "dirstate-v2";
 
 /// When narrowing is finalized and no longer subject to format changes,
 /// we should move this to just "narrow" or similar.
diff --git a/tests/test-basic.t b/tests/test-basic.t
--- a/tests/test-basic.t
+++ b/tests/test-basic.t
@@ -6,7 +6,7 @@ Create a repository:
   devel.all-warnings=true
   devel.default-date=0 0
   extensions.fsmonitor= (fsmonitor !)
-  format.exp-dirstate-v2=1 (dirstate-v2 !)
+  format.exp-rc-dirstate-v2=1 (dirstate-v2 !)
   largefiles.usercache=$TESTTMP/.cache/largefiles
   lfs.usercache=$TESTTMP/.cache/lfs
   ui.slash=True
diff --git a/tests/test-commandserver.t b/tests/test-commandserver.t
--- a/tests/test-commandserver.t
+++ b/tests/test-commandserver.t
@@ -218,7 +218,7 @@ check that local configs for the cached 
   devel.all-warnings=true
   devel.default-date=0 0
   extensions.fsmonitor= (fsmonitor !)
-  format.exp-dirstate-v2=1 (dirstate-v2 !)
+  format.exp-rc-dirstate-v2=1 (dirstate-v2 !)
   largefiles.usercache=$TESTTMP/.cache/largefiles
   lfs.usercache=$TESTTMP/.cache/lfs
   ui.slash=True
diff --git a/tests/test-dirstate-race.t b/tests/test-dirstate-race.t
--- a/tests/test-dirstate-race.t
+++ b/tests/test-dirstate-race.t
@@ -3,7 +3,7 @@
 #if dirstate-v2
   $ cat >> $HGRCPATH << EOF
   > [format]
-  > exp-dirstate-v2=1
+  > exp-rc-dirstate-v2=1
   > [storage]
   > dirstate-v2.slow-path=allow
   > EOF
diff --git a/tests/test-dirstate-race2.t b/tests/test-dirstate-race2.t
--- a/tests/test-dirstate-race2.t
+++ b/tests/test-dirstate-race2.t
@@ -3,7 +3,7 @@
 #if dirstate-v2
   $ cat >> $HGRCPATH << EOF
   > [format]
-  > exp-dirstate-v2=1
+  > exp-rc-dirstate-v2=1
   > [storage]
   > dirstate-v2.slow-path=allow
   > EOF
diff --git a/tests/test-dirstate.t b/tests/test-dirstate.t
--- a/tests/test-dirstate.t
+++ b/tests/test-dirstate.t
@@ -3,7 +3,7 @@
 #if dirstate-v2
   $ cat >> $HGRCPATH << EOF
   > [format]
-  > exp-dirstate-v2=1
+  > exp-rc-dirstate-v2=1
   > [storage]
   > dirstate-v2.slow-path=allow
   > EOF
diff --git a/tests/test-hgignore.t b/tests/test-hgignore.t
--- a/tests/test-hgignore.t
+++ b/tests/test-hgignore.t
@@ -3,7 +3,7 @@
 #if dirstate-v2
   $ cat >> $HGRCPATH << EOF
   > [format]
-  > exp-dirstate-v2=1
+  > exp-rc-dirstate-v2=1
   > [storage]
   > dirstate-v2.slow-path=allow
   > EOF
diff --git a/tests/test-init.t b/tests/test-init.t
--- a/tests/test-init.t
+++ b/tests/test-init.t
@@ -19,7 +19,7 @@ creating 'local'
   store created
   00changelog.i created
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   fncache
   generaldelta
   persistent-nodemap (rust !)
@@ -61,7 +61,7 @@ creating repo with format.usestore=false
 
   $ hg --config format.usestore=false init old
   $ checknewrepo old
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   generaldelta
   persistent-nodemap (rust !)
   revlog-compression-zstd (zstd !)
@@ -75,7 +75,7 @@ creating repo with format.usefncache=fal
   $ checknewrepo old2
   store created
   00changelog.i created
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   generaldelta
   persistent-nodemap (rust !)
   revlog-compression-zstd (zstd !)
@@ -90,7 +90,7 @@ creating repo with format.dotencode=fals
   $ checknewrepo old3
   store created
   00changelog.i created
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   fncache
   generaldelta
   persistent-nodemap (rust !)
@@ -107,7 +107,7 @@ creating repo with format.dotencode=fals
   store created
   00changelog.i created
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   fncache
   persistent-nodemap (rust !)
   revlog-compression-zstd (zstd !)
@@ -226,7 +226,7 @@ creating 'local/sub/repo'
   store created
   00changelog.i created
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   fncache
   generaldelta
   persistent-nodemap (rust !)
@@ -249,7 +249,7 @@ init should (for consistency with clone)
   store created
   00changelog.i created
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   fncache
   generaldelta
   persistent-nodemap (rust !)
@@ -268,7 +268,7 @@ verify that clone also expand urls
   store created
   00changelog.i created
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   fncache
   generaldelta
   persistent-nodemap (rust !)
diff --git a/tests/test-lfconvert.t b/tests/test-lfconvert.t
--- a/tests/test-lfconvert.t
+++ b/tests/test-lfconvert.t
@@ -96,7 +96,7 @@ Test link+rename largefile codepath
 "lfconvert" adds 'largefiles' to .hg/requires.
   $ cat .hg/requires
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   fncache
   generaldelta
   largefiles
diff --git a/tests/test-lfs-largefiles.t b/tests/test-lfs-largefiles.t
--- a/tests/test-lfs-largefiles.t
+++ b/tests/test-lfs-largefiles.t
@@ -290,7 +290,7 @@ The requirement is added to the destinat
 
   $ cat .hg/requires
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   fncache
   generaldelta
   lfs
diff --git a/tests/test-narrow-clone-no-ellipsis.t b/tests/test-narrow-clone-no-ellipsis.t
--- a/tests/test-narrow-clone-no-ellipsis.t
+++ b/tests/test-narrow-clone-no-ellipsis.t
@@ -24,7 +24,7 @@ narrow clone a file, f10
   $ cd narrow
   $ cat .hg/requires | grep -v generaldelta
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   fncache
   narrowhg-experimental
   persistent-nodemap (rust !)
diff --git a/tests/test-narrow-clone-stream.t b/tests/test-narrow-clone-stream.t
--- a/tests/test-narrow-clone-stream.t
+++ b/tests/test-narrow-clone-stream.t
@@ -64,7 +64,7 @@ Making sure we have the correct set of r
   $ cat .hg/requires
   dotencode (tree !)
   dotencode (flat-fncache !)
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   fncache (tree !)
   fncache (flat-fncache !)
   generaldelta
diff --git a/tests/test-narrow-clone.t b/tests/test-narrow-clone.t
--- a/tests/test-narrow-clone.t
+++ b/tests/test-narrow-clone.t
@@ -40,7 +40,7 @@ narrow clone a file, f10
   $ cd narrow
   $ cat .hg/requires | grep -v generaldelta
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   fncache
   narrowhg-experimental
   persistent-nodemap (rust !)
diff --git a/tests/test-narrow-sparse.t b/tests/test-narrow-sparse.t
--- a/tests/test-narrow-sparse.t
+++ b/tests/test-narrow-sparse.t
@@ -58,7 +58,7 @@ XXX: we should have a flag in `hg debugs
 
   $ cat .hg/requires
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   fncache
   generaldelta
   narrowhg-experimental
diff --git a/tests/test-permissions.t b/tests/test-permissions.t
--- a/tests/test-permissions.t
+++ b/tests/test-permissions.t
@@ -5,7 +5,7 @@
 #if dirstate-v2
   $ cat >> $HGRCPATH << EOF
   > [format]
-  > exp-dirstate-v2=1
+  > exp-rc-dirstate-v2=1
   > [storage]
   > dirstate-v2.slow-path=allow
   > EOF
diff --git a/tests/test-persistent-nodemap.t b/tests/test-persistent-nodemap.t
--- a/tests/test-persistent-nodemap.t
+++ b/tests/test-persistent-nodemap.t
@@ -800,7 +800,7 @@ downgrading
   requirements
      preserved: dotencode, fncache, generaldelta, revlogv1, share-safe, sparserevlog, store (no-zstd no-dirstate-v2 !)
      preserved: dotencode, fncache, generaldelta, revlog-compression-zstd, revlogv1, share-safe, sparserevlog, store (zstd no-dirstate-v2 !)
-     preserved: dotencode, exp-dirstate-v2, fncache, generaldelta, revlog-compression-zstd, revlogv1, share-safe, sparserevlog, store (zstd dirstate-v2 !)
+     preserved: dotencode, exp-rc-dirstate-v2, fncache, generaldelta, revlog-compression-zstd, revlogv1, share-safe, sparserevlog, store (zstd dirstate-v2 !)
      removed: persistent-nodemap
   
   processed revlogs:
@@ -844,7 +844,7 @@ upgrading
   requirements
      preserved: dotencode, fncache, generaldelta, revlogv1, share-safe, sparserevlog, store (no-zstd no-dirstate-v2 !)
      preserved: dotencode, fncache, generaldelta, revlog-compression-zstd, revlogv1, share-safe, sparserevlog, store (zstd no-dirstate-v2 !)
-     preserved: dotencode, exp-dirstate-v2, fncache, generaldelta, revlog-compression-zstd, revlogv1, share-safe, sparserevlog, store (zstd dirstate-v2 !)
+     preserved: dotencode, exp-rc-dirstate-v2, fncache, generaldelta, revlog-compression-zstd, revlogv1, share-safe, sparserevlog, store (zstd dirstate-v2 !)
      added: persistent-nodemap
   
   processed revlogs:
@@ -876,7 +876,7 @@ Running unrelated upgrade
   requirements
      preserved: dotencode, fncache, generaldelta, persistent-nodemap, revlogv1, share-safe, sparserevlog, store (no-zstd no-dirstate-v2 !)
      preserved: dotencode, fncache, generaldelta, persistent-nodemap, revlog-compression-zstd, revlogv1, share-safe, sparserevlog, store (zstd no-dirstate-v2 !)
-     preserved: dotencode, exp-dirstate-v2, fncache, generaldelta, persistent-nodemap, revlog-compression-zstd, revlogv1, share-safe, sparserevlog, store (zstd dirstate-v2 !)
+     preserved: dotencode, exp-rc-dirstate-v2, fncache, generaldelta, persistent-nodemap, revlog-compression-zstd, revlogv1, share-safe, sparserevlog, store (zstd dirstate-v2 !)
   
   optimisations: re-delta-all
   
diff --git a/tests/test-phases.t b/tests/test-phases.t
--- a/tests/test-phases.t
+++ b/tests/test-phases.t
@@ -884,7 +884,7 @@ Check we deny its usage on older reposit
   $ cd no-internal-phase
   $ cat .hg/requires
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   fncache
   generaldelta
   persistent-nodemap (rust !)
@@ -913,7 +913,7 @@ Check it works fine with repository that
   $ cd internal-phase
   $ cat .hg/requires
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   fncache
   generaldelta
   internal-phase
diff --git a/tests/test-purge.t b/tests/test-purge.t
--- a/tests/test-purge.t
+++ b/tests/test-purge.t
@@ -3,7 +3,7 @@
 #if dirstate-v2
   $ cat >> $HGRCPATH << EOF
   > [format]
-  > exp-dirstate-v2=1
+  > exp-rc-dirstate-v2=1
   > [storage]
   > dirstate-v2.slow-path=allow
   > EOF
diff --git a/tests/test-remotefilelog-clone-tree.t b/tests/test-remotefilelog-clone-tree.t
--- a/tests/test-remotefilelog-clone-tree.t
+++ b/tests/test-remotefilelog-clone-tree.t
@@ -27,7 +27,7 @@
   $ cd shallow
   $ cat .hg/requires
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   exp-remotefilelog-repo-req-1
   fncache
   generaldelta
@@ -71,7 +71,7 @@
   $ cd shallow2
   $ cat .hg/requires
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   exp-remotefilelog-repo-req-1
   fncache
   generaldelta
@@ -115,7 +115,7 @@
   $ ls shallow3/.hg/store/data
   $ cat shallow3/.hg/requires
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   exp-remotefilelog-repo-req-1
   fncache
   generaldelta
diff --git a/tests/test-remotefilelog-clone.t b/tests/test-remotefilelog-clone.t
--- a/tests/test-remotefilelog-clone.t
+++ b/tests/test-remotefilelog-clone.t
@@ -24,7 +24,7 @@
   $ cd shallow
   $ cat .hg/requires
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   exp-remotefilelog-repo-req-1
   fncache
   generaldelta
@@ -61,7 +61,7 @@
   $ cd shallow2
   $ cat .hg/requires
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   exp-remotefilelog-repo-req-1
   fncache
   generaldelta
@@ -113,7 +113,7 @@ check its contents separately.
   $ ls shallow3/.hg/store/data
   $ cat shallow3/.hg/requires
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   exp-remotefilelog-repo-req-1
   fncache
   generaldelta
diff --git a/tests/test-remotefilelog-log.t b/tests/test-remotefilelog-log.t
--- a/tests/test-remotefilelog-log.t
+++ b/tests/test-remotefilelog-log.t
@@ -27,7 +27,7 @@ Shallow clone from full
   $ cd shallow
   $ cat .hg/requires
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   exp-remotefilelog-repo-req-1
   fncache
   generaldelta
diff --git a/tests/test-repo-compengines.t b/tests/test-repo-compengines.t
--- a/tests/test-repo-compengines.t
+++ b/tests/test-repo-compengines.t
@@ -11,7 +11,7 @@ A new repository uses zlib storage, whic
   $ cd default
   $ cat .hg/requires
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   fncache
   generaldelta
   persistent-nodemap (rust !)
@@ -61,7 +61,7 @@ with that engine or a requirement
 
   $ cat .hg/requires
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   fncache
   generaldelta
   persistent-nodemap (rust !)
@@ -81,7 +81,7 @@ with that engine or a requirement
   $ cd zstd
   $ cat .hg/requires
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   fncache
   generaldelta
   persistent-nodemap (rust !)
@@ -186,7 +186,7 @@ checking details of none compression
   $ cat none-compression/.hg/requires
   dotencode
   exp-compression-none
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   fncache
   generaldelta
   persistent-nodemap (rust !)
diff --git a/tests/test-requires.t b/tests/test-requires.t
--- a/tests/test-requires.t
+++ b/tests/test-requires.t
@@ -50,7 +50,7 @@ another repository of push/pull/clone on
   > EOF
   $ hg -R supported debugrequirements
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   featuresetup-test
   fncache
   generaldelta
diff --git a/tests/test-revlog-v2.t b/tests/test-revlog-v2.t
--- a/tests/test-revlog-v2.t
+++ b/tests/test-revlog-v2.t
@@ -22,7 +22,7 @@ Can create and open repo with revlog v2 
   $ cd new-repo
   $ cat .hg/requires
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   exp-revlogv2.2
   fncache
   generaldelta
diff --git a/tests/test-share-safe.t b/tests/test-share-safe.t
--- a/tests/test-share-safe.t
+++ b/tests/test-share-safe.t
@@ -19,7 +19,7 @@ prepare source repo
   $ hg init source
   $ cd source
   $ cat .hg/requires
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   share-safe
   $ cat .hg/store/requires
   dotencode
@@ -30,7 +30,7 @@ prepare source repo
   store
   $ hg debugrequirements
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   fncache
   generaldelta
   revlogv1
@@ -54,13 +54,13 @@ Create a shared repo and check the requi
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cd shared1
   $ cat .hg/requires
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   share-safe
   shared
 
   $ hg debugrequirements -R ../source
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   fncache
   generaldelta
   revlogv1
@@ -70,7 +70,7 @@ Create a shared repo and check the requi
 
   $ hg debugrequirements
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   fncache
   generaldelta
   revlogv1
@@ -225,7 +225,7 @@ Disable zstd related tests because its n
   
   requirements
      preserved: dotencode, fncache, generaldelta, revlogv1, share-safe, sparserevlog, store (no-dirstate-v2 !)
-     preserved: dotencode, exp-dirstate-v2, fncache, generaldelta, revlogv1, share-safe, sparserevlog, store (dirstate-v2 !)
+     preserved: dotencode, exp-rc-dirstate-v2, fncache, generaldelta, revlogv1, share-safe, sparserevlog, store (dirstate-v2 !)
      added: revlog-compression-zstd
   
   processed revlogs:
@@ -253,8 +253,8 @@ Disable zstd related tests because its n
   requirements
      preserved: dotencode, fncache, generaldelta, revlogv1, share-safe, sparserevlog, store (no-zstd no-dirstate-v2 !)
      preserved: dotencode, fncache, generaldelta, revlog-compression-zstd, revlogv1, share-safe, sparserevlog, store (zstd no-dirstate-v2 !)
-     preserved: dotencode, exp-dirstate-v2, fncache, generaldelta, revlogv1, share-safe, sparserevlog, store (no-zstd dirstate-v2 !)
-     preserved: dotencode, exp-dirstate-v2, fncache, generaldelta, revlog-compression-zstd, revlogv1, share-safe, sparserevlog, store (zstd dirstate-v2 !)
+     preserved: dotencode, exp-rc-dirstate-v2, fncache, generaldelta, revlogv1, share-safe, sparserevlog, store (no-zstd dirstate-v2 !)
+     preserved: dotencode, exp-rc-dirstate-v2, fncache, generaldelta, revlog-compression-zstd, revlogv1, share-safe, sparserevlog, store (zstd dirstate-v2 !)
      added: persistent-nodemap
   
   processed revlogs:
@@ -327,7 +327,7 @@ Test that upgrading using debugupgradere
   $ cd non-share-safe
   $ hg debugrequirements
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   fncache
   generaldelta
   revlogv1
@@ -346,7 +346,7 @@ Create a share before upgrading
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg debugrequirements -R nss-share
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   fncache
   generaldelta
   revlogv1
@@ -360,7 +360,7 @@ Upgrade
   $ hg debugupgraderepo -q
   requirements
      preserved: dotencode, fncache, generaldelta, revlogv1, sparserevlog, store (no-dirstate-v2 !)
-     preserved: dotencode, exp-dirstate-v2, fncache, generaldelta, revlogv1, sparserevlog, store (dirstate-v2 !)
+     preserved: dotencode, exp-rc-dirstate-v2, fncache, generaldelta, revlogv1, sparserevlog, store (dirstate-v2 !)
      added: share-safe
   
   processed revlogs:
@@ -373,7 +373,7 @@ Upgrade
   
   requirements
      preserved: dotencode, fncache, generaldelta, revlogv1, sparserevlog, store (no-dirstate-v2 !)
-     preserved: dotencode, exp-dirstate-v2, fncache, generaldelta, revlogv1, sparserevlog, store (dirstate-v2 !)
+     preserved: dotencode, exp-rc-dirstate-v2, fncache, generaldelta, revlogv1, sparserevlog, store (dirstate-v2 !)
      added: share-safe
   
   share-safe
@@ -394,7 +394,7 @@ Upgrade
 
   $ hg debugrequirements
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   fncache
   generaldelta
   revlogv1
@@ -403,7 +403,7 @@ Upgrade
   store
 
   $ cat .hg/requires
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   share-safe
 
   $ cat .hg/store/requires
@@ -454,7 +454,7 @@ Test that downgrading works too
   $ hg debugupgraderepo -q
   requirements
      preserved: dotencode, fncache, generaldelta, revlogv1, sparserevlog, store (no-dirstate-v2 !)
-     preserved: dotencode, exp-dirstate-v2, fncache, generaldelta, revlogv1, sparserevlog, store (dirstate-v2 !)
+     preserved: dotencode, exp-rc-dirstate-v2, fncache, generaldelta, revlogv1, sparserevlog, store (dirstate-v2 !)
      removed: share-safe
   
   processed revlogs:
@@ -467,7 +467,7 @@ Test that downgrading works too
   
   requirements
      preserved: dotencode, fncache, generaldelta, revlogv1, sparserevlog, store (no-dirstate-v2 !)
-     preserved: dotencode, exp-dirstate-v2, fncache, generaldelta, revlogv1, sparserevlog, store (dirstate-v2 !)
+     preserved: dotencode, exp-rc-dirstate-v2, fncache, generaldelta, revlogv1, sparserevlog, store (dirstate-v2 !)
      removed: share-safe
   
   processed revlogs:
@@ -485,7 +485,7 @@ Test that downgrading works too
 
   $ hg debugrequirements
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   fncache
   generaldelta
   revlogv1
@@ -494,7 +494,7 @@ Test that downgrading works too
 
   $ cat .hg/requires
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   fncache
   generaldelta
   revlogv1
@@ -553,7 +553,7 @@ Testing automatic upgrade of shares when
   
   requirements
      preserved: dotencode, fncache, generaldelta, revlogv1, sparserevlog, store (no-dirstate-v2 !)
-     preserved: dotencode, exp-dirstate-v2, fncache, generaldelta, revlogv1, sparserevlog, store (dirstate-v2 !)
+     preserved: dotencode, exp-rc-dirstate-v2, fncache, generaldelta, revlogv1, sparserevlog, store (dirstate-v2 !)
      added: share-safe
   
   processed revlogs:
@@ -564,7 +564,7 @@ Testing automatic upgrade of shares when
   repository upgraded to share safe mode, existing shares will still work in old non-safe mode. Re-share existing shares to use them in safe mode New shares will be created in safe mode.
   $ hg debugrequirements
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   fncache
   generaldelta
   revlogv1
diff --git a/tests/test-sparse-requirement.t b/tests/test-sparse-requirement.t
--- a/tests/test-sparse-requirement.t
+++ b/tests/test-sparse-requirement.t
@@ -18,7 +18,7 @@ Enable sparse profile
 
   $ cat .hg/requires
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   fncache
   generaldelta
   persistent-nodemap (rust !)
@@ -38,7 +38,7 @@ Requirement for sparse added when sparse
 
   $ cat .hg/requires
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   exp-sparse
   fncache
   generaldelta
@@ -61,7 +61,7 @@ Requirement for sparse is removed when s
 
   $ cat .hg/requires
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   fncache
   generaldelta
   persistent-nodemap (rust !)
diff --git a/tests/test-sqlitestore.t b/tests/test-sqlitestore.t
--- a/tests/test-sqlitestore.t
+++ b/tests/test-sqlitestore.t
@@ -15,7 +15,7 @@ New repo should not use SQLite by defaul
   $ hg init empty-no-sqlite
   $ cat empty-no-sqlite/.hg/requires
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   fncache
   generaldelta
   persistent-nodemap (rust !)
@@ -29,7 +29,7 @@ storage.new-repo-backend=sqlite is recog
   $ hg --config storage.new-repo-backend=sqlite init empty-sqlite
   $ cat empty-sqlite/.hg/requires
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   exp-sqlite-001
   exp-sqlite-comp-001=zstd (zstd !)
   exp-sqlite-comp-001=$BUNDLE2_COMPRESSIONS$ (no-zstd !)
@@ -51,7 +51,7 @@ Can force compression to zlib
   $ hg --config storage.sqlite.compression=zlib init empty-zlib
   $ cat empty-zlib/.hg/requires
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   exp-sqlite-001
   exp-sqlite-comp-001=$BUNDLE2_COMPRESSIONS$
   fncache
@@ -67,7 +67,7 @@ Can force compression to none
   $ hg --config storage.sqlite.compression=none init empty-none
   $ cat empty-none/.hg/requires
   dotencode
-  exp-dirstate-v2 (dirstate-v2 !)
+  exp-rc-dirstate-v2 (dirstate-v2 !)
   exp-sqlite-001
   exp-sqlite-comp-001=none
   fncache
diff --git a/tests/test-status.t b/tests/test-status.t
--- a/tests/test-status.t
+++ b/tests/test-status.t
@@ -3,7 +3,7 @@
 #if dirstate-v2
   $ cat >> $HGRCPATH << EOF
   > [format]
-  > exp-dirstate-v2=1
+  > exp-rc-dirstate-v2=1
   > [storage]
   > dirstate-v2.slow-path=allow
   > EOF
diff --git a/tests/test-stream-bundle-v2.t b/tests/test-stream-bundle-v2.t
--- a/tests/test-stream-bundle-v2.t
+++ b/tests/test-stream-bundle-v2.t
@@ -48,12 +48,12 @@ The extension requires a repo (currently
   stream2 -- {bytecount: 1693, filecount: 11, requirements: dotencode%2Cfncache%2Cgeneraldelta%2Crevlogv1%2Csparserevlog%2Cstore} (mandatory: True) (no-zstd !)
   stream2 -- {bytecount: 1693, filecount: 11, requirements: dotencode%2Cfncache%2Cgeneraldelta%2Crevlog-compression-zstd%2Crevlogv1%2Csparserevlog%2Cstore} (mandatory: True) (zstd no-rust !)
   stream2 -- {bytecount: 1693, filecount: 11, requirements: dotencode%2Cfncache%2Cgeneraldelta%2Cpersistent-nodemap%2Crevlog-compression-zstd%2Crevlogv1%2Csparserevlog%2Cstore} (mandatory: True) (rust no-dirstate-v2 !)
-  stream2 -- {bytecount: 1693, filecount: 11, requirements: dotencode%2Cexp-dirstate-v2%2Cfncache%2Cgeneraldelta%2Cpersistent-nodemap%2Crevlog-compression-zstd%2Crevlogv1%2Csparserevlog%2Cstore} (mandatory: True) (dirstate-v2 !)
+  stream2 -- {bytecount: 1693, filecount: 11, requirements: dotencode%2Cexp-rc-dirstate-v2%2Cfncache%2Cgeneraldelta%2Cpersistent-nodemap%2Crevlog-compression-zstd%2Crevlogv1%2Csparserevlog%2Cstore} (mandatory: True) (dirstate-v2 !)
   $ hg debugbundle --spec bundle.hg
   none-v2;stream=v2;requirements%3Ddotencode%2Cfncache%2Cgeneraldelta%2Crevlogv1%2Csparserevlog%2Cstore (no-zstd !)
   none-v2;stream=v2;requirements%3Ddotencode%2Cfncache%2Cgeneraldelta%2Crevlog-compression-zstd%2Crevlogv1%2Csparserevlog%2Cstore (zstd no-rust !)
   none-v2;stream=v2;requirements%3Ddotencode%2Cfncache%2Cgeneraldelta%2Cpersistent-nodemap%2Crevlog-compression-zstd%2Crevlogv1%2Csparserevlog%2Cstore (rust no-dirstate-v2 !)
-  none-v2;stream=v2;requirements%3Ddotencode%2Cexp-dirstate-v2%2Cfncache%2Cgeneraldelta%2Cpersistent-nodemap%2Crevlog-compression-zstd%2Crevlogv1%2Csparserevlog%2Cstore (dirstate-v2 !)
+  none-v2;stream=v2;requirements%3Ddotencode%2Cexp-rc-dirstate-v2%2Cfncache%2Cgeneraldelta%2Cpersistent-nodemap%2Crevlog-compression-zstd%2Crevlogv1%2Csparserevlog%2Cstore (dirstate-v2 !)
 
 Test that we can apply the bundle as a stream clone bundle
 
diff --git a/tests/test-symlinks.t b/tests/test-symlinks.t
--- a/tests/test-symlinks.t
+++ b/tests/test-symlinks.t
@@ -5,7 +5,7 @@
 #if dirstate-v2
   $ cat >> $HGRCPATH << EOF
   > [format]
-  > exp-dirstate-v2=1
+  > exp-rc-dirstate-v2=1
   > [storage]
   > dirstate-v2.slow-path=allow
   > EOF
diff --git a/tests/test-upgrade-repo.t b/tests/test-upgrade-repo.t
--- a/tests/test-upgrade-repo.t
+++ b/tests/test-upgrade-repo.t
@@ -1638,7 +1638,7 @@ Demonstrate that nothing to perform upgr
 
 Upgrade to dirstate-v2
 
-  $ hg debugformat -v --config format.exp-dirstate-v2=1
+  $ hg debugformat -v --config format.exp-rc-dirstate-v2=1
   format-variant     repo config default
   fncache:            yes    yes     yes
   dirstate-v2:         no    yes      no
@@ -1653,12 +1653,12 @@ Upgrade to dirstate-v2
   plain-cl-delta:     yes    yes     yes
   compression:        zstd   zstd    zstd
   compression-level:  default default default
-  $ hg debugupgraderepo --config format.exp-dirstate-v2=1 --run
+  $ hg debugupgraderepo --config format.exp-rc-dirstate-v2=1 --run
   upgrade will perform the following actions:
   
   requirements
      preserved: dotencode, exp-revlogv2.2, fncache, generaldelta, persistent-nodemap, revlog-compression-zstd, sparserevlog, store
-     added: exp-dirstate-v2
+     added: dirstate-v2
   
   dirstate-v2
      "hg status" will be faster
@@ -1703,7 +1703,7 @@ Downgrade from dirstate-v2
   
   requirements
      preserved: dotencode, exp-revlogv2.2, fncache, generaldelta, persistent-nodemap, revlog-compression-zstd, sparserevlog, store
-     removed: exp-dirstate-v2
+     removed: dirstate-v2
   
   processed revlogs:
     - all-filelogs