|
|
Test correctness of revlog inline -> non-inline transition
|
|
|
----------------------------------------------------------
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|
|
Helper extension to intercept renames and kill process
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$ cat > $TESTTMP/intercept_before_rename.py << EOF
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> import os
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|
> import signal
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|
> from mercurial import extensions, util
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>
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> def extsetup(ui):
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> def close(orig, *args, **kwargs):
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> path = util.normpath(args[0]._atomictempfile__name)
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> if path.endswith(b'/.hg/store/data/file.i'):
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> os.kill(os.getpid(), signal.SIGKILL)
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> return orig(*args, **kwargs)
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> extensions.wrapfunction(util.atomictempfile, 'close', close)
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> EOF
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$ cat > $TESTTMP/intercept_after_rename.py << EOF
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> import os
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> import signal
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> from mercurial import extensions, util
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>
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> def extsetup(ui):
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> def close(orig, *args, **kwargs):
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> path = util.normpath(args[0]._atomictempfile__name)
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> r = orig(*args, **kwargs)
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> if path.endswith(b'/.hg/store/data/file.i'):
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> os.kill(os.getpid(), signal.SIGKILL)
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> return r
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> extensions.wrapfunction(util.atomictempfile, 'close', close)
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> EOF
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$ cat > $TESTTMP/killme.py << EOF
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> import os
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> import signal
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>
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> def killme(ui, repo, hooktype, **kwargs):
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> os.kill(os.getpid(), signal.SIGKILL)
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> EOF
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$ cat > $TESTTMP/reader_wait_split.py << EOF
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> import os
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> import signal
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> from mercurial import extensions, revlog, testing
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> def _wait_post_load(orig, self, *args, **kwargs):
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> wait = b'data/file' in self.radix
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> if wait:
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> testing.wait_file(b"$TESTTMP/writer-revlog-split")
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> r = orig(self, *args, **kwargs)
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> if wait:
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> testing.write_file(b"$TESTTMP/reader-index-read")
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> testing.wait_file(b"$TESTTMP/writer-revlog-unsplit")
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> return r
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>
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|
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> def extsetup(ui):
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|
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> extensions.wrapfunction(revlog.revlog, '_loadindex', _wait_post_load)
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> EOF
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|
|
setup a repository for tests
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----------------------------
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$ cat >> $HGRCPATH << EOF
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> [format]
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> revlog-compression=none
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> EOF
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$ hg init troffset-computation
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$ cd troffset-computation
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|
$ printf '%20d' '1' > file
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$ hg commit -Aqma
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$ printf '%1024d' '1' > file
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$ hg commit -Aqmb
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$ printf '%20d' '1' > file
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$ hg commit -Aqmc
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$ dd if=/dev/zero of=file bs=1k count=128 > /dev/null 2>&1
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$ hg commit -AqmD
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|
|
Reference size:
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|
|
$ f -s file
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file: size=131072
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|
|
$ f -s .hg/store/data/file*
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.hg/store/data/file.d: size=132139
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|
|
.hg/store/data/file.i: size=256
|
|
|
|
|
|
$ cd ..
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|
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|
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|
|
Test a hard crash after the file was split but before the transaction was committed
|
|
|
===================================================================================
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|
|
Test offset computation to correctly factor in the index entries themselves.
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|
|
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 commits a, b, c, D, where D is large (grows the revlog enough that it
|
|
|
transitions to non-inline storage). The clone initially has changes a, b
|
|
|
and will transition to non-inline storage when adding c, D.
|
|
|
|
|
|
If the transaction adding c, D is rolled back, then we don't undo the revlog split,
|
|
|
but truncate the index and the data to remove both c and D.
|
|
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|
|
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|
|
|
$ hg clone --quiet --rev 1 troffset-computation troffset-computation-copy
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|
|
$ cd troffset-computation-copy
|
|
|
|
|
|
Reference size:
|
|
|
$ f -s file
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|
|
file: size=1024
|
|
|
$ f -s .hg/store/data/file*
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|
|
.hg/store/data/file.i: size=1174
|
|
|
|
|
|
$ cat > .hg/hgrc <<EOF
|
|
|
> [hooks]
|
|
|
> pretxnchangegroup = python:$TESTTMP/killme.py:killme
|
|
|
> EOF
|
|
|
#if chg
|
|
|
$ hg pull ../troffset-computation
|
|
|
pulling from ../troffset-computation
|
|
|
[255]
|
|
|
#else
|
|
|
$ hg pull ../troffset-computation
|
|
|
pulling from ../troffset-computation
|
|
|
Killed
|
|
|
[137]
|
|
|
#endif
|
|
|
|
|
|
|
|
|
The revlog have been split on disk
|
|
|
|
|
|
$ f -s .hg/store/data/file*
|
|
|
.hg/store/data/file.d: size=132139
|
|
|
.hg/store/data/file.i: size=256
|
|
|
|
|
|
$ cat .hg/store/journal | tr -s '\000' ' ' | grep data/file | tail -1
|
|
|
data/file.i 128
|
|
|
|
|
|
The first file.i entry should match the "Reference 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:cfa8d6e60429
|
|
|
tag: tip
|
|
|
user: test
|
|
|
date: Thu Jan 01 00:00:00 1970 +0000
|
|
|
summary: b
|
|
|
|
|
|
$ 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 ..
|
|
|
|
|
|
Test a hard crash right before the index is move into place
|
|
|
===========================================================
|
|
|
|
|
|
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 --quiet --rev 1 troffset-computation troffset-computation-copy2
|
|
|
$ cd troffset-computation-copy2
|
|
|
|
|
|
Reference size:
|
|
|
$ f -s file
|
|
|
file: size=1024
|
|
|
$ f -s .hg/store/data/file*
|
|
|
.hg/store/data/file.i: size=1174
|
|
|
|
|
|
$ cat > .hg/hgrc <<EOF
|
|
|
> [extensions]
|
|
|
> intercept_rename = $TESTTMP/intercept_before_rename.py
|
|
|
> [hooks]
|
|
|
> pretxnchangegroup = python:$TESTTMP/killme.py:killme
|
|
|
> EOF
|
|
|
#if chg
|
|
|
$ hg pull ../troffset-computation
|
|
|
pulling from ../troffset-computation
|
|
|
[255]
|
|
|
#else
|
|
|
$ hg pull ../troffset-computation
|
|
|
pulling from ../troffset-computation
|
|
|
Killed
|
|
|
[137]
|
|
|
#endif
|
|
|
|
|
|
The data file is created, but the revlog is still inline
|
|
|
|
|
|
$ f -s .hg/store/data/file*
|
|
|
.hg/store/data/file.d: size=132139
|
|
|
.hg/store/data/file.i: size=132395
|
|
|
|
|
|
$ 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:cfa8d6e60429
|
|
|
tag: tip
|
|
|
user: test
|
|
|
date: Thu Jan 01 00:00:00 1970 +0000
|
|
|
summary: b
|
|
|
|
|
|
$ hg verify -q
|
|
|
$ cd ..
|
|
|
|
|
|
Test a hard crash right after the index is move into place
|
|
|
===========================================================
|
|
|
|
|
|
Now retry the procedure but intercept the rename of the index.
|
|
|
|
|
|
Things get corrupted /o\
|
|
|
|
|
|
$ hg clone --quiet --rev 1 troffset-computation troffset-computation-crash-after-rename
|
|
|
$ cd troffset-computation-crash-after-rename
|
|
|
|
|
|
Reference size:
|
|
|
$ f -s file
|
|
|
file: size=1024
|
|
|
$ f -s .hg/store/data/file*
|
|
|
.hg/store/data/file.i: size=1174
|
|
|
|
|
|
$ cat > .hg/hgrc <<EOF
|
|
|
> [extensions]
|
|
|
> intercept_rename = $TESTTMP/intercept_after_rename.py
|
|
|
> [hooks]
|
|
|
> pretxnchangegroup = python:$TESTTMP/killme.py:killme
|
|
|
> EOF
|
|
|
#if chg
|
|
|
$ hg pull ../troffset-computation
|
|
|
pulling from ../troffset-computation
|
|
|
[255]
|
|
|
#else
|
|
|
$ hg pull ../troffset-computation
|
|
|
pulling from ../troffset-computation
|
|
|
Killed
|
|
|
[137]
|
|
|
#endif
|
|
|
|
|
|
the revlog has been split on disk
|
|
|
|
|
|
$ f -s .hg/store/data/file*
|
|
|
.hg/store/data/file.d: size=132139
|
|
|
.hg/store/data/file.i: size=256
|
|
|
|
|
|
$ 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
|
|
|
abort: attempted to truncate data/file.i to 1174 bytes, but it was already 256 bytes
|
|
|
|
|
|
[255]
|
|
|
$ f -s .hg/store/data/file*
|
|
|
.hg/store/data/file.d: size=1046
|
|
|
.hg/store/data/file.i: size=256
|
|
|
$ hg tip
|
|
|
changeset: 1:cfa8d6e60429
|
|
|
tag: tip
|
|
|
user: test
|
|
|
date: Thu Jan 01 00:00:00 1970 +0000
|
|
|
summary: b
|
|
|
|
|
|
$ hg verify -q
|
|
|
abandoned transaction found - run hg recover
|
|
|
warning: revlog 'data/file.d' not in fncache!
|
|
|
file@0: data length off by -131093 bytes
|
|
|
file@2: unpacking fa1120531cc1: partial read of revlog data/file.d; expected 21 bytes from offset 1046, got 0
|
|
|
file@3: unpacking a631378adaa3: partial read of revlog data/file.d; expected 131072 bytes from offset 1067, got -21
|
|
|
file@?: rev 2 points to nonexistent changeset 2
|
|
|
(expected )
|
|
|
file@?: fa1120531cc1 not in manifests
|
|
|
file@?: rev 3 points to nonexistent changeset 3
|
|
|
(expected )
|
|
|
file@?: a631378adaa3 not in manifests
|
|
|
not checking dirstate because of previous errors
|
|
|
3 warnings encountered!
|
|
|
hint: run "hg debugrebuildfncache" to recover from corrupt fncache
|
|
|
7 integrity errors encountered!
|
|
|
(first damaged changeset appears to be 0)
|
|
|
[1]
|
|
|
$ cd ..
|
|
|
|
|
|
Have the transaction rollback itself without any hard crash
|
|
|
===========================================================
|
|
|
|
|
|
|
|
|
Repeat the original test but let hg rollback the transaction.
|
|
|
|
|
|
$ hg clone --quiet --rev 1 troffset-computation troffset-computation-copy-rb
|
|
|
$ 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]
|
|
|
|
|
|
File are still split on disk, with the expected size.
|
|
|
|
|
|
$ f -s .hg/store/data/file*
|
|
|
.hg/store/data/file.d: size=1046
|
|
|
.hg/store/data/file.i: size=128
|
|
|
|
|
|
$ hg tip
|
|
|
changeset: 1:cfa8d6e60429
|
|
|
tag: tip
|
|
|
user: test
|
|
|
date: Thu Jan 01 00:00:00 1970 +0000
|
|
|
summary: b
|
|
|
|
|
|
$ hg verify -q
|
|
|
warning: revlog 'data/file.d' not in fncache!
|
|
|
1 warnings encountered!
|
|
|
hint: run "hg debugrebuildfncache" to recover from corrupt fncache
|
|
|
$ cd ..
|
|
|
|
|
|
Read race
|
|
|
=========
|
|
|
|
|
|
We check that a client that started reading a revlog (its index) after the
|
|
|
split and end reading (the data) after the rollback should be fine
|
|
|
|
|
|
$ hg clone --quiet --rev 1 troffset-computation troffset-computation-race
|
|
|
$ cd troffset-computation-race
|
|
|
$ cat > .hg/hgrc <<EOF
|
|
|
> [hooks]
|
|
|
> pretxnchangegroup=$RUNTESTDIR/testlib/wait-on-file 5 $TESTTMP/reader-index-read $TESTTMP/writer-revlog-split
|
|
|
> pretxnclose = false
|
|
|
> EOF
|
|
|
|
|
|
start a reader
|
|
|
|
|
|
$ hg cat --rev 0 file \
|
|
|
> --config "extensions.wait_read=$TESTTMP/reader_wait_split.py" \
|
|
|
> 2> $TESTTMP/reader.stderr \
|
|
|
> > $TESTTMP/reader.stdout &
|
|
|
|
|
|
Do a failed pull in //
|
|
|
|
|
|
$ hg pull ../troffset-computation
|
|
|
pulling from ../troffset-computation
|
|
|
searching for changes
|
|
|
adding changesets
|
|
|
adding manifests
|
|
|
adding file changes
|
|
|
transaction abort!
|
|
|
rollback completed
|
|
|
abort: pretxnclose hook exited with status 1
|
|
|
[40]
|
|
|
$ touch $TESTTMP/writer-revlog-unsplit
|
|
|
$ wait
|
|
|
|
|
|
The reader should be fine
|
|
|
$ cat $TESTTMP/reader.stderr
|
|
|
$ cat $TESTTMP/reader.stdout
|
|
|
1 (no-eol)
|
|
|
$ cd ..
|
|
|
|
