Mercurial > hg
view tests/test-transaction-rollback-on-revlog-split.t @ 47877:2174f54aab18
store: return just one filename in walk functions
Various walk functions return `(revlog_type, decoded, encoded)` where
decoded could be None. But no-one cares about `encoded` and expects
`unencoded` to be present, except verify (because this can only happen
with old repo formats).
Simplify all this by either failing outright if a decoding a filename
fails (instead of almost certainly failing with a type error due to
treating None as a bytes), or skipping the filename but providing in
an out argument for hg verify.
Differential Revision: https://phab.mercurial-scm.org/D11248
author | Valentin Gatien-Baron <valentin.gatienbaron@gmail.com> |
---|---|
date | Mon, 02 Aug 2021 08:05:13 -0400 |
parents | 0fb328bb2459 |
children | f38ae2d7390e |
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Test correctness of revlog inline -> non-inline transition ---------------------------------------------------------- Helper extension to intercept renames. $ cat > $TESTTMP/intercept_rename.py << EOF > import os > import sys > from mercurial import extensions, util > > def extsetup(ui): > def close(orig, *args, **kwargs): > path = util.normpath(args[0]._atomictempfile__name) > if path.endswith(b'/.hg/store/data/file.i'): > os._exit(80) > return orig(*args, **kwargs) > extensions.wrapfunction(util.atomictempfile, 'close', close) > EOF Test offset computation to correctly factor in the index entries themselve. Also test that the new data size has the correct size if the transaction is aborted after the index has been replaced. Test repo has one small, one moderate and one big change. The clone has the small and moderate change and will transition to non-inline storage when adding the big change. $ hg init troffset-computation --config format.revlog-compression=none $ cd troffset-computation $ printf '%20d' '1' > file $ hg commit -Aqm_ $ printf '%1024d' '1' > file $ hg commit -Aqm_ $ dd if=/dev/zero of=file bs=1k count=128 > /dev/null 2>&1 $ hg commit -Aqm_ $ cd .. $ hg clone -r 1 troffset-computation troffset-computation-copy --config format.revlog-compression=none -q $ cd troffset-computation-copy Reference size: $ f -s .hg/store/data/file* .hg/store/data/file.i: size=1174 $ cat > .hg/hgrc <<EOF > [hooks] > pretxnchangegroup = python:$TESTDIR/helper-killhook.py:killme > EOF #if chg $ hg pull ../troffset-computation pulling from ../troffset-computation [255] #else $ hg pull ../troffset-computation pulling from ../troffset-computation [80] #endif $ cat .hg/store/journal | tr -s '\000' ' ' | grep data/file | tail -1 data/file.i 128 The first file.i entry should match the size above. The first file.d entry is the temporary record during the split, the second entry after the split happened. The sum of the second file.d and the second file.i entry should match the first file.i entry. $ cat .hg/store/journal | tr -s '\000' ' ' | grep data/file data/file.i 1174 data/file.d 0 data/file.d 1046 data/file.i 128 $ hg recover rolling back interrupted transaction (verify step skipped, run `hg verify` to check your repository content) $ f -s .hg/store/data/file* .hg/store/data/file.d: size=1046 .hg/store/data/file.i: size=128 $ hg tip changeset: 1:3ce491143aec tag: tip user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: _ $ hg verify -q warning: revlog 'data/file.d' not in fncache! 1 warnings encountered! hint: run "hg debugrebuildfncache" to recover from corrupt fncache $ hg debugrebuildfncache --only-data adding data/file.d 1 items added, 0 removed from fncache $ hg verify -q $ cd .. Now retry the procedure but intercept the rename of the index and check that the journal does not contain the new index size. This demonstrates the edge case where the data file is left as garbage. $ hg clone -r 1 troffset-computation troffset-computation-copy2 --config format.revlog-compression=none -q $ cd troffset-computation-copy2 $ cat > .hg/hgrc <<EOF > [extensions] > intercept_rename = $TESTTMP/intercept_rename.py > [hooks] > pretxnchangegroup = python:$TESTDIR/helper-killhook.py:killme > EOF #if chg $ hg pull ../troffset-computation pulling from ../troffset-computation [255] #else $ hg pull ../troffset-computation pulling from ../troffset-computation [80] #endif $ cat .hg/store/journal | tr -s '\000' ' ' | grep data/file data/file.i 1174 data/file.d 0 data/file.d 1046 $ hg recover rolling back interrupted transaction (verify step skipped, run `hg verify` to check your repository content) $ f -s .hg/store/data/file* .hg/store/data/file.d: size=1046 .hg/store/data/file.i: size=1174 $ hg tip changeset: 1:3ce491143aec tag: tip user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: _ $ hg verify -q $ cd .. Repeat the original test but let hg rollback the transaction. $ hg clone -r 1 troffset-computation troffset-computation-copy-rb --config format.revlog-compression=none -q $ cd troffset-computation-copy-rb $ cat > .hg/hgrc <<EOF > [hooks] > pretxnchangegroup = false > EOF $ hg pull ../troffset-computation pulling from ../troffset-computation searching for changes adding changesets adding manifests adding file changes transaction abort! rollback completed abort: pretxnchangegroup hook exited with status 1 [40] $ f -s .hg/store/data/file* .hg/store/data/file.d: size=1046 .hg/store/data/file.i: size=128 $ hg tip changeset: 1:3ce491143aec tag: tip user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: _ $ hg verify -q warning: revlog 'data/file.d' not in fncache! 1 warnings encountered! hint: run "hg debugrebuildfncache" to recover from corrupt fncache $ cd ..