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Test how largefiles abort in case the disk runs full
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$ cat > criple.py <<EOF
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> from __future__ import absolute_import
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> import errno
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> import os
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> import shutil
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> from mercurial import util
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> #
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> # this makes the original largefiles code abort:
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> _origcopyfileobj = shutil.copyfileobj
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> def copyfileobj(fsrc, fdst, length=16 * 1024):
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> # allow journal files (used by transaction) to be written
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> if b'journal.' in fdst.name:
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> return _origcopyfileobj(fsrc, fdst, length)
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> fdst.write(fsrc.read(4))
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> raise IOError(errno.ENOSPC, os.strerror(errno.ENOSPC))
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> shutil.copyfileobj = copyfileobj
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> #
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> # this makes the rewritten code abort:
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> def filechunkiter(f, size=131072, limit=None):
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> yield f.read(4)
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> raise IOError(errno.ENOSPC, os.strerror(errno.ENOSPC))
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> util.filechunkiter = filechunkiter
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> #
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> def oslink(src, dest):
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> raise OSError("no hardlinks, try copying instead")
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> util.oslink = oslink
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> EOF
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$ echo "[extensions]" >> $HGRCPATH
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$ echo "largefiles =" >> $HGRCPATH
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$ hg init alice
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$ cd alice
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$ echo "this is a very big file" > big
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$ hg add --large big
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$ hg commit --config extensions.criple=$TESTTMP/criple.py -m big
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abort: No space left on device
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[255]
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The largefile is not created in .hg/largefiles:
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$ ls .hg/largefiles
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dirstate
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The user cache is not even created:
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>>> import os; os.path.exists("$HOME/.cache/largefiles/")
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False
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Make the commit with space on the device:
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$ hg commit -m big
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Now make a clone with a full disk, and make sure lfutil.link function
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makes copies instead of hardlinks:
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$ cd ..
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$ hg --config extensions.criple=$TESTTMP/criple.py clone --pull alice bob
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requesting all changes
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adding changesets
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adding manifests
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adding file changes
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added 1 changesets with 1 changes to 1 files
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new changesets 390cf214e9ac
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updating to branch default
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getting changed largefiles
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abort: No space left on device
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[255]
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The largefile is not created in .hg/largefiles:
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$ ls bob/.hg/largefiles
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dirstate
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