[PATCH] Hardlinked chroot for morph

Patch to improve morph build time by reusing decompressed files of chunks/stage-fillers with hardlinks from the chroot. Rather than decompressing each time into each chroot. Original: real 5h 17m 47s Hardlink: real 2h 52m 27s --- morphlib/stagingarea.py | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/morphlib/stagingarea.py b/morphlib/stagingarea.py index a87b45c..ef41fd2 100644 --- a/morphlib/stagingarea.py +++ b/morphlib/stagingarea.py @@ -17,6 +17,7 @@ import logging import os import shutil +import subprocess import morphlib @@ -90,7 +91,19 @@ class StagingArea(object): logging.debug('Installing artifact %s' % getattr(handle, 'name', 'unknown name')) - morphlib.bins.unpack_binary_from_file(handle, self.dirname) + + decomp = self._app.settings['tempdir'] + "/" + os.path.basename(handle.name) + srctime = os.stat(handle.name).st_mtime + if not os.path.exists(decomp) or ( (srctime - os.stat(decomp).st_mtime) > 0.001 ): + self._mkdir(decomp) + morphlib.bins.unpack_binary_from_file(handle, decomp + "/") + os.utime(decomp,(srctime,srctime)) + + if not os.path.exists(self.dirname): + self._mkdir(self.dirname) + + subprocess.call(["sh","-c","cp -al " + decomp+"/* " + self.dirname+"/"]) + def remove(self): '''Remove the entire staging area. -- 1.7.9.5