Mercurial > hg
view tests/test-mq-subrepo.t @ 32697:19b9fc40cc51
revlog: skeleton support for version 2 revlogs
There are a number of improvements we want to make to revlogs
that will require a new version - version 2. It is unclear what the
full set of improvements will be or when we'll be done with them.
What I do know is that the process will likely take longer than a
single release, will require input from various stakeholders to
evaluate changes, and will have many contentious debates and
bikeshedding.
It is unrealistic to develop revlog version 2 up front: there
are just too many uncertainties that we won't know until things
are implemented and experiments are run. Some changes will also
be invasive and prone to bit rot, so sitting on dozens of patches
is not practical.
This commit introduces skeleton support for version 2 revlogs in
a way that is flexible and not bound by backwards compatibility
concerns.
An experimental repo requirement for denoting revlog v2 has been
added. The requirement string has a sub-version component to it.
This will allow us to declare multiple requirements in the course
of developing revlog v2. Whenever we change the in-development
revlog v2 format, we can tweak the string, creating a new
requirement and locking out old clients. This will allow us to
make as many backwards incompatible changes and experiments to
revlog v2 as we want. In other words, we can land code and make
meaningful progress towards revlog v2 while still maintaining
extreme format flexibility up until the point we freeze the
format and remove the experimental labels.
To enable the new repo requirement, you must supply an experimental
and undocumented config option. But not just any boolean flag
will do: you need to explicitly use a value that no sane person
should ever type. This is an additional guard against enabling
revlog v2 on an installation it shouldn't be enabled on. The
specific scenario I'm trying to prevent is say a user with a
4.4 client with a frozen format enabling the option but then
downgrading to 4.3 and accidentally creating repos with an
outdated and unsupported repo format. Requiring a "challenge"
string should prevent this.
Because the format is not yet finalized and I don't want to take
any chances, revlog v2's version is currently 0xDEAD. I figure
squatting on a value we're likely never to use as an actual revlog
version to mean "internal testing only" is acceptable. And
"dead" is easily recognized as something meaningful.
There is a bunch of cleanup that is needed before work on revlog
v2 begins in earnest. I plan on doing that work once this patch
is accepted and we're comfortable with the idea of starting down
this path.
| author | Gregory Szorc <gregory.szorc@gmail.com> |
|---|---|
| date | Fri, 19 May 2017 20:29:11 -0700 |
| parents | a2804ddcf9ae |
| children | 6d88468d435b |
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$ cat <<EOF >> $HGRCPATH > [ui] > commitsubrepos = Yes > [extensions] > mq = > record = > [diff] > nodates = 1 > EOF $ stdin=`pwd`/stdin.tmp fn to create new repository w/dirty subrepo, and cd into it $ mkrepo() { > hg init $1 > cd $1 > hg qinit > } fn to create dirty subrepo $ mksubrepo() { > hg init $1 > cd $1 > echo a > a > hg add > cd .. > } $ testadd() { > cat - > "$stdin" > mksubrepo sub > echo sub = sub >> .hgsub > hg add .hgsub > echo % abort when adding .hgsub w/dirty subrepo > hg status -S > echo '%' $* > cat "$stdin" | hg $* > echo [$?] > hg -R sub ci -m0sub > echo % update substate when adding .hgsub w/clean updated subrepo > hg status -S > echo '%' $* > cat "$stdin" | hg $* > hg debugsub > } $ testmod() { > cat - > "$stdin" > mksubrepo sub2 > echo sub2 = sub2 >> .hgsub > echo % abort when modifying .hgsub w/dirty subrepo > hg status -S > echo '%' $* > cat "$stdin" | hg $* > echo [$?] > hg -R sub2 ci -m0sub2 > echo % update substate when modifying .hgsub w/clean updated subrepo > hg status -S > echo '%' $* > cat "$stdin" | hg $* > hg debugsub > } $ testrm1() { > cat - > "$stdin" > mksubrepo sub3 > echo sub3 = sub3 >> .hgsub > hg ci -Aqmsub3 > $EXTRA > echo b >> sub3/a > hg rm .hgsub > echo % update substate when removing .hgsub w/dirty subrepo > hg status -S > echo '%' $* > cat "$stdin" | hg $* > echo % debugsub should be empty > hg debugsub > } $ testrm2() { > cat - > "$stdin" > mksubrepo sub4 > echo sub4 = sub4 >> .hgsub > hg ci -Aqmsub4 > $EXTRA > hg rm .hgsub > echo % update substate when removing .hgsub w/clean updated subrepo > hg status -S > echo '%' $* > cat "$stdin" | hg $* > echo % debugsub should be empty > hg debugsub > } handle subrepos safely on qnew $ mkrepo repo-2499-qnew $ testadd qnew -X path:no-effect -m0 0.diff adding a % abort when adding .hgsub w/dirty subrepo A .hgsub A sub/a % qnew -X path:no-effect -m0 0.diff abort: uncommitted changes in subrepository 'sub' [255] % update substate when adding .hgsub w/clean updated subrepo A .hgsub A sub/a % qnew -X path:no-effect -m0 0.diff path sub source sub revision b2fdb12cd82b021c3b7053d67802e77b6eeaee31 $ testmod qnew --cwd .. -R repo-2499-qnew -X path:no-effect -m1 1.diff adding a % abort when modifying .hgsub w/dirty subrepo M .hgsub A sub2/a % qnew --cwd .. -R repo-2499-qnew -X path:no-effect -m1 1.diff abort: uncommitted changes in subrepository 'sub2' [255] % update substate when modifying .hgsub w/clean updated subrepo M .hgsub A sub2/a % qnew --cwd .. -R repo-2499-qnew -X path:no-effect -m1 1.diff path sub source sub revision b2fdb12cd82b021c3b7053d67802e77b6eeaee31 path sub2 source sub2 revision 1f94c7611cc6b74f5a17b16121a1170d44776845 $ hg qpop -qa patch queue now empty $ testrm1 qnew -m2 2.diff adding a % update substate when removing .hgsub w/dirty subrepo M sub3/a R .hgsub % qnew -m2 2.diff % debugsub should be empty $ hg qpop -qa patch queue now empty $ testrm2 qnew -m3 3.diff adding a % update substate when removing .hgsub w/clean updated subrepo R .hgsub % qnew -m3 3.diff % debugsub should be empty $ cd .. handle subrepos safely on qrefresh $ mkrepo repo-2499-qrefresh $ hg qnew -m0 0.diff $ testadd qrefresh adding a % abort when adding .hgsub w/dirty subrepo A .hgsub A sub/a % qrefresh abort: uncommitted changes in subrepository 'sub' [255] % update substate when adding .hgsub w/clean updated subrepo A .hgsub A sub/a % qrefresh path sub source sub revision b2fdb12cd82b021c3b7053d67802e77b6eeaee31 $ hg qnew -m1 1.diff $ testmod qrefresh adding a % abort when modifying .hgsub w/dirty subrepo M .hgsub A sub2/a % qrefresh abort: uncommitted changes in subrepository 'sub2' [255] % update substate when modifying .hgsub w/clean updated subrepo M .hgsub A sub2/a % qrefresh path sub source sub revision b2fdb12cd82b021c3b7053d67802e77b6eeaee31 path sub2 source sub2 revision 1f94c7611cc6b74f5a17b16121a1170d44776845 $ hg qpop -qa patch queue now empty $ EXTRA='hg qnew -m2 2.diff' $ testrm1 qrefresh adding a % update substate when removing .hgsub w/dirty subrepo M sub3/a R .hgsub % qrefresh % debugsub should be empty $ hg qpop -qa patch queue now empty $ EXTRA='hg qnew -m3 3.diff' $ testrm2 qrefresh adding a % update substate when removing .hgsub w/clean updated subrepo R .hgsub % qrefresh % debugsub should be empty $ EXTRA= $ cd .. handle subrepos safely on qpush/qpop (and we cannot qpop / qpush with a modified subrepo) $ mkrepo repo-2499-qpush $ mksubrepo sub adding a $ hg -R sub ci -m0sub $ echo sub = sub > .hgsub $ hg add .hgsub $ hg commit -m0 $ hg debugsub path sub source sub revision b2fdb12cd82b021c3b7053d67802e77b6eeaee31 $ echo foo > ./sub/a $ hg -R sub commit -m foo $ hg commit -m1 $ hg qimport -r "0:tip" $ hg -R sub id --id aa037b301eba qpop $ hg -R sub update 0000 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg qpop abort: local changed subrepos found, qrefresh first [255] $ hg revert sub reverting subrepo sub adding sub/a (glob) $ hg qpop popping 1 now at: 0 $ hg status -AS C .hgsub C .hgsubstate C sub/a $ hg -R sub id --id b2fdb12cd82b qpush $ hg -R sub update 0000 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg qpush abort: local changed subrepos found, qrefresh first [255] $ hg revert sub reverting subrepo sub adding sub/a (glob) $ hg qpush applying 1 subrepository sub diverged (local revision: b2fdb12cd82b, remote revision: aa037b301eba) (M)erge, keep (l)ocal or keep (r)emote? m 1 files updated, 0 files merged, 0 files removed, 0 files unresolved now at: 1 $ hg status -AS C .hgsub C .hgsubstate C sub/a $ hg -R sub id --id aa037b301eba $ cd .. handle subrepos safely on qrecord $ mkrepo repo-2499-qrecord $ testadd qrecord --config ui.interactive=1 -m0 0.diff <<EOF > y > y > EOF adding a % abort when adding .hgsub w/dirty subrepo A .hgsub A sub/a % qrecord --config ui.interactive=1 -m0 0.diff diff --git a/.hgsub b/.hgsub new file mode 100644 examine changes to '.hgsub'? [Ynesfdaq?] y @@ -0,0 +1,1 @@ +sub = sub record this change to '.hgsub'? [Ynesfdaq?] y warning: subrepo spec file '.hgsub' not found warning: subrepo spec file '.hgsub' not found abort: uncommitted changes in subrepository 'sub' [255] % update substate when adding .hgsub w/clean updated subrepo A .hgsub A sub/a % qrecord --config ui.interactive=1 -m0 0.diff diff --git a/.hgsub b/.hgsub new file mode 100644 examine changes to '.hgsub'? [Ynesfdaq?] y @@ -0,0 +1,1 @@ +sub = sub record this change to '.hgsub'? [Ynesfdaq?] y warning: subrepo spec file '.hgsub' not found warning: subrepo spec file '.hgsub' not found path sub source sub revision b2fdb12cd82b021c3b7053d67802e77b6eeaee31 $ testmod qrecord --config ui.interactive=1 -m1 1.diff <<EOF > y > y > EOF adding a % abort when modifying .hgsub w/dirty subrepo M .hgsub A sub2/a % qrecord --config ui.interactive=1 -m1 1.diff diff --git a/.hgsub b/.hgsub 1 hunks, 1 lines changed examine changes to '.hgsub'? [Ynesfdaq?] y @@ -1,1 +1,2 @@ sub = sub +sub2 = sub2 record this change to '.hgsub'? [Ynesfdaq?] y abort: uncommitted changes in subrepository 'sub2' [255] % update substate when modifying .hgsub w/clean updated subrepo M .hgsub A sub2/a % qrecord --config ui.interactive=1 -m1 1.diff diff --git a/.hgsub b/.hgsub 1 hunks, 1 lines changed examine changes to '.hgsub'? [Ynesfdaq?] y @@ -1,1 +1,2 @@ sub = sub +sub2 = sub2 record this change to '.hgsub'? [Ynesfdaq?] y path sub source sub revision b2fdb12cd82b021c3b7053d67802e77b6eeaee31 path sub2 source sub2 revision 1f94c7611cc6b74f5a17b16121a1170d44776845 $ hg qpop -qa patch queue now empty $ testrm1 qrecord --config ui.interactive=1 -m2 2.diff <<EOF > y > y > EOF adding a % update substate when removing .hgsub w/dirty subrepo M sub3/a R .hgsub % qrecord --config ui.interactive=1 -m2 2.diff diff --git a/.hgsub b/.hgsub deleted file mode 100644 examine changes to '.hgsub'? [Ynesfdaq?] y % debugsub should be empty $ hg qpop -qa patch queue now empty $ testrm2 qrecord --config ui.interactive=1 -m3 3.diff <<EOF > y > y > EOF adding a % update substate when removing .hgsub w/clean updated subrepo R .hgsub % qrecord --config ui.interactive=1 -m3 3.diff diff --git a/.hgsub b/.hgsub deleted file mode 100644 examine changes to '.hgsub'? [Ynesfdaq?] y % debugsub should be empty $ cd .. correctly handle subrepos with patch queues $ mkrepo repo-subrepo-with-queue $ mksubrepo sub adding a $ hg -R sub qnew sub0.diff $ echo sub = sub >> .hgsub $ hg add .hgsub $ hg qnew 0.diff $ cd .. check whether MQ operations can import updated .hgsubstate correctly both into 'revision' and 'patch file under .hg/patches': $ hg init importing-hgsubstate $ cd importing-hgsubstate $ echo a > a $ hg commit -u test -d '0 0' -Am '#0 in parent' adding a $ hg init sub $ echo sa > sub/sa $ hg -R sub commit -u test -d '0 0' -Am '#0 in sub' adding sa $ echo 'sub = sub' > .hgsub $ touch .hgsubstate $ hg add .hgsub .hgsubstate $ hg qnew -u test -d '0 0' import-at-qnew $ hg -R sub parents --template '{node} sub\n' b6f6e9c41f3dfd374a6d2ed4535c87951cf979cf sub $ cat .hgsubstate b6f6e9c41f3dfd374a6d2ed4535c87951cf979cf sub $ hg diff -c tip diff -r f499373e340c -r f69e96d86e75 .hgsub --- /dev/null +++ b/.hgsub @@ -0,0 +1,1 @@ +sub = sub diff -r f499373e340c -r f69e96d86e75 .hgsubstate --- /dev/null +++ b/.hgsubstate @@ -0,0 +1,1 @@ +b6f6e9c41f3dfd374a6d2ed4535c87951cf979cf sub $ cat .hg/patches/import-at-qnew # HG changeset patch # User test # Date 0 0 # Parent f499373e340cdca5d01dee904aeb42dd2a325e71 diff -r f499373e340c -r f69e96d86e75 .hgsub --- /dev/null +++ b/.hgsub @@ -0,0 +1,1 @@ +sub = sub diff -r f499373e340c -r f69e96d86e75 .hgsubstate --- /dev/null +++ b/.hgsubstate @@ -0,0 +1,1 @@ +b6f6e9c41f3dfd374a6d2ed4535c87951cf979cf sub $ hg parents --template '{node}\n' f69e96d86e75a6d4fd88285dc9697acb23951041 $ hg parents --template '{files}\n' .hgsub .hgsubstate check also whether qnew not including ".hgsubstate" explicitly causes as same result (in node hash) as one including it. $ hg qpop -a -q patch queue now empty $ hg qdelete import-at-qnew $ echo 'sub = sub' > .hgsub $ hg add .hgsub $ rm -f .hgsubstate $ hg qnew -u test -d '0 0' import-at-qnew $ hg parents --template '{node}\n' f69e96d86e75a6d4fd88285dc9697acb23951041 $ hg parents --template '{files}\n' .hgsub .hgsubstate check whether qrefresh imports updated .hgsubstate correctly $ hg qpop popping import-at-qnew patch queue now empty $ hg qpush applying import-at-qnew now at: import-at-qnew $ hg parents --template '{files}\n' .hgsub .hgsubstate $ hg qnew import-at-qrefresh $ echo sb > sub/sb $ hg -R sub commit -u test -d '0 0' -Am '#1 in sub' adding sb $ hg qrefresh -u test -d '0 0' $ hg -R sub parents --template '{node} sub\n' 88ac1bef5ed43b689d1d200b59886b675dec474b sub $ cat .hgsubstate 88ac1bef5ed43b689d1d200b59886b675dec474b sub $ hg diff -c tip diff -r 05b056bb9c8c -r d987bec230f4 .hgsubstate --- a/.hgsubstate +++ b/.hgsubstate @@ -1,1 +1,1 @@ -b6f6e9c41f3dfd374a6d2ed4535c87951cf979cf sub +88ac1bef5ed43b689d1d200b59886b675dec474b sub $ cat .hg/patches/import-at-qrefresh # HG changeset patch # User test # Date 0 0 # Parent 05b056bb9c8c05ff15258b84fd42ab3527271033 diff -r 05b056bb9c8c .hgsubstate --- a/.hgsubstate +++ b/.hgsubstate @@ -1,1 +1,1 @@ -b6f6e9c41f3dfd374a6d2ed4535c87951cf979cf sub +88ac1bef5ed43b689d1d200b59886b675dec474b sub $ hg parents --template '{files}\n' .hgsubstate $ hg qrefresh -u test -d '0 0' $ cat .hgsubstate 88ac1bef5ed43b689d1d200b59886b675dec474b sub $ hg diff -c tip diff -r 05b056bb9c8c -r d987bec230f4 .hgsubstate --- a/.hgsubstate +++ b/.hgsubstate @@ -1,1 +1,1 @@ -b6f6e9c41f3dfd374a6d2ed4535c87951cf979cf sub +88ac1bef5ed43b689d1d200b59886b675dec474b sub $ cat .hg/patches/import-at-qrefresh # HG changeset patch # User test # Date 0 0 # Parent 05b056bb9c8c05ff15258b84fd42ab3527271033 diff -r 05b056bb9c8c .hgsubstate --- a/.hgsubstate +++ b/.hgsubstate @@ -1,1 +1,1 @@ -b6f6e9c41f3dfd374a6d2ed4535c87951cf979cf sub +88ac1bef5ed43b689d1d200b59886b675dec474b sub $ hg parents --template '{files}\n' .hgsubstate $ hg update -C tip 0 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg qpop -a popping import-at-qrefresh popping import-at-qnew patch queue now empty $ hg -R sub update -C 0 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ echo 'sub = sub' > .hgsub $ hg commit -Am '#1 in parent' adding .hgsub $ hg -R sub update -C 1 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg commit -Am '#2 in parent (but will be rolled back soon)' $ hg rollback repository tip rolled back to revision 1 (undo commit) working directory now based on revision 1 $ hg status M .hgsubstate $ hg qnew -u test -d '0 0' checkstate-at-qnew $ hg -R sub parents --template '{node} sub\n' 88ac1bef5ed43b689d1d200b59886b675dec474b sub $ cat .hgsubstate 88ac1bef5ed43b689d1d200b59886b675dec474b sub $ hg diff -c tip diff -r 4d91eb2fa1d1 -r 1259c112d884 .hgsubstate --- a/.hgsubstate +++ b/.hgsubstate @@ -1,1 +1,1 @@ -b6f6e9c41f3dfd374a6d2ed4535c87951cf979cf sub +88ac1bef5ed43b689d1d200b59886b675dec474b sub $ cat .hg/patches/checkstate-at-qnew # HG changeset patch # User test # Date 0 0 # Parent 4d91eb2fa1d1b22ec513347b9cd06f6b49d470fa diff -r 4d91eb2fa1d1 -r 1259c112d884 .hgsubstate --- a/.hgsubstate +++ b/.hgsubstate @@ -1,1 +1,1 @@ -b6f6e9c41f3dfd374a6d2ed4535c87951cf979cf sub +88ac1bef5ed43b689d1d200b59886b675dec474b sub $ hg parents --template '{files}\n' .hgsubstate check whether qrefresh not including ".hgsubstate" explicitly causes as same result (in node hash) as one including it. $ hg update -C -q 0 $ hg qpop -a -q patch queue now empty $ hg qnew -u test -d '0 0' add-hgsub-at-qrefresh $ echo 'sub = sub' > .hgsub $ echo > .hgsubstate $ hg add .hgsub .hgsubstate $ hg qrefresh -u test -d '0 0' $ hg parents --template '{node}\n' 7c48c35501aae6770ed9c2517014628615821a8e $ hg parents --template '{files}\n' .hgsub .hgsubstate $ hg qpop -a -q patch queue now empty $ hg qdelete add-hgsub-at-qrefresh $ hg qnew -u test -d '0 0' add-hgsub-at-qrefresh $ echo 'sub = sub' > .hgsub $ hg add .hgsub $ rm -f .hgsubstate $ hg qrefresh -u test -d '0 0' $ hg parents --template '{node}\n' 7c48c35501aae6770ed9c2517014628615821a8e $ hg parents --template '{files}\n' .hgsub .hgsubstate $ cd .. $ cd ..