view tests/test-largefiles-small-disk.t @ 24882:995003a324da stable

bundlerepo: disable filtering of changelog while constructing revision text

This avoids the following error that happened if base revision of bundle file
was hidden. bundlerevlog needs it to construct revision texts from bundle
content as revlog.revision() does.

  File "mercurial/context.py", line 485, in _changeset
    return self._repo.changelog.read(self.rev())
  File "mercurial/changelog.py", line 319, in read
    text = self.revision(node)
  File "mercurial/bundlerepo.py", line 124, in revision
    text = self.baserevision(iterrev)
  File "mercurial/bundlerepo.py", line 160, in baserevision
    return changelog.changelog.revision(self, nodeorrev)
  File "mercurial/revlog.py", line 1041, in revision
    node = self.node(rev)
  File "mercurial/changelog.py", line 211, in node
    raise error.FilteredIndexError(rev)
  mercurial.error.FilteredIndexError: 1

Test how largefiles abort in case the disk runs full

  $ cat > criple.py <<EOF
  > import os, errno, shutil
  > from mercurial import util
  > #
  > # this makes the original largefiles code abort:
  > def copyfileobj(fsrc, fdst, length=16*1024):
  >     fdst.write(fsrc.read(4))
  >     raise IOError(errno.ENOSPC, os.strerror(errno.ENOSPC))
  > shutil.copyfileobj = copyfileobj
  > #
  > # this makes the rewritten code abort:
  > def filechunkiter(f, size=65536, limit=None):
  >     yield f.read(4)
  >     raise IOError(errno.ENOSPC, os.strerror(errno.ENOSPC))
  > util.filechunkiter = filechunkiter
  > #
  > def oslink(src, dest):
  >     raise OSError("no hardlinks, try copying instead")
  > util.oslink = oslink
  > EOF

  $ echo "[extensions]" >> $HGRCPATH
  $ echo "largefiles =" >> $HGRCPATH

  $ hg init alice
  $ cd alice
  $ echo "this is a very big file" > big
  $ hg add --large big
  $ hg commit --config extensions.criple=$TESTTMP/criple.py -m big
  abort: No space left on device
  [255]

The largefile is not created in .hg/largefiles:

  $ ls .hg/largefiles
  dirstate

The user cache is not even created:

  >>> import os; os.path.exists("$HOME/.cache/largefiles/")
  False

Make the commit with space on the device:

  $ hg commit -m big

Now make a clone with a full disk, and make sure lfutil.link function
makes copies instead of hardlinks:

  $ cd ..
  $ hg --config extensions.criple=$TESTTMP/criple.py clone --pull alice bob
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files
  updating to branch default
  getting changed largefiles
  abort: No space left on device
  [255]

The largefile is not created in .hg/largefiles:

  $ ls bob/.hg/largefiles
  dirstate