Python library to get FIE and command line tool
See the video for a demo including installing from source, but you can install with pip:
pip install filefragRun pyfilefrag on the command line. See --help for details. It has
--verbose, and --json outputs for your parsing pleasure.
To use the library, just call filefrag.FileMap('/path/whatever') to build a map
of the extents in the file using ioctl’s interface. Then you can poke about in
the guts of a file:
- ⛓️💥 inspect fragmentation
- 🔍 find out where data is on your physical drive
- 🟰 compare extents between paths
- 📔 use them as dict keys
- 🕳️ check files for holes, like before and after hole punching
- ✅ verify your deduplication strategy, write your own stats tool
- 💩 dump file layouts to json (
print(f"{filemap:j}") ⚠️ break your disk because you believed the outputs of this alpha release!
Comes with a Device class to do comparisons, so it ought to work with fragments in files on different mountpoints, bind mounts and so on (unfortunately not snap’s FUSE mounts; they’re far too abstract and piped in via a socket)
from filefrag import FileMap
mapping = FileMap('/usr/bin/bash')
print(mapping.extents)
print(extents)Licensed under the WTFPL with one additional clause:
- Don't blame me.
Do whatever the fuck you want, just don't blame me.
Not that this thing will ever be big enough to need a code of conduct, but it's a good excuse to pimp out my common fucking sense code of conduct.