dirstate-v2: no longer register the data-file during transaction
If the data file change during the transaction, we cannot truncate it.
The content of the file itself is fine as it will get backed up at the same time
as the docket.
Leaving the trailing data at the end of failed transaction is fine. The
dirstate-v2 format supports it. The dead data will simply we written over if
necessary.
#require no-windows
$ . "$TESTDIR/remotefilelog-library.sh"
$ hg init master
$ cd master
$ cat >> .hg/hgrc <<EOF
> [remotefilelog]
> server=True
> EOF
$ echo x > x
$ hg commit -qAm x
$ cd ..
$ hgcloneshallow ssh://user@dummy/master shallow -q
1 files fetched over 1 fetches - (1 misses, 0.00% hit ratio) over *s (glob)
$ cd shallow
$ cat >> $TESTTMP/get_file_linknode.py <<EOF
> from mercurial import node, registrar, scmutil
> cmdtable = {}
> command = registrar.command(cmdtable)
> @command(b'debug-file-linknode', [(b'r', b'rev', b'.', b'rev')], b'hg debug-file-linknode FILE')
> def debug_file_linknode(ui, repo, file, **opts):
> rflctx = scmutil.revsingle(repo.unfiltered(), opts['rev']).filectx(file)
> ui.status(b'%s\n' % node.hex(rflctx.ancestormap()[rflctx._filenode][2]))
> EOF
$ cat >> .hg/hgrc <<EOF
> [ui]
> interactive=1
> [extensions]
> strip=
> get_file_linknode=$TESTTMP/get_file_linknode.py
> [experimental]
> evolution=createmarkers,allowunstable
> EOF
$ echo a > a
$ hg commit -qAm msg1
$ hg commit --amend 're:^$' -m msg2
$ hg commit --amend 're:^$' -m msg3
$ hg --hidden log -G -T '{rev} {node|short}'
@ 3 df91f74b871e
|
| x 2 70494d7ec5ef
|/
| x 1 1e423846dde0
|/
o 0 b292c1e3311f
$ hg debug-file-linknode -r 70494d a
df91f74b871e064c89afa1fe9e2f66afa2c125df
$ hg --hidden strip -r 1 3
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
saved backup bundle to $TESTTMP/shallow/.hg/strip-backup/df91f74b871e-c94d67be-backup.hg
$ hg --hidden log -G -T '{rev} {node|short}'
o 1 70494d7ec5ef
|
@ 0 b292c1e3311f
Demonstrate that the linknode points to a commit that is actually in the repo
after the strip operation. Otherwise remotefilelog has to search every commit in
the repository looking for a valid linkrev every time it's queried, such as
during push.
$ hg debug-file-linknode -r 70494d a
70494d7ec5ef6cd3cd6939a9fd2812f9956bf553