upstream/mercurial-mirror Files · tests/test-largefiles-small-disk.t

largefiles: factor out procedures to update standins for pre-committing...

largefiles: factor out procedures to update standins for pre-committing This patch factors out procedures to update standins for pre-committing. This is one of preparations to avoid execution of such procedures according to invocation context. For example, resuming automated committing (e.g. "hg rebase --continue") should update standins at the 1st commit, because largefiles in the working directory may be modified manually. But on the other hand, it should avoid updating standins at subsequent committings for efficiency reason. For simplicity, this patch just moves procedures mechanically only with replacing below. - "self" => "repo" - "lfutil." => (none) - "orig" invocation => returning "match" Using "fstandin" instead "standin" as the name of local variable for the loop below is the only special care, because the latter shadows the same name function in "lfutil.py". [before] for standin in standins: lfile = lfutil.splitstandin(standin) if lfdirstate[lfile] != 'r': lfutil.updatestandin(self, standin) [after] for fstandin in standins: lfile = splitstandin(fstandin) if lfdirstate[lfile] != 'r': updatestandin(repo, fstandin)

Mads Kiilerich - - Load All Authors

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      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

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				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