The document discusses using Python and FUSE (Filesystem in Userspace) to create simple filesystems. It provides examples of existing FUSE-based filesystems like redisfs and gmailfs. The FUSE API is outlined which Python can use to implement filesystem attributes and methods like getattr, rename, read, and write. The author's approach is to implement just the necessary methods for the task. Live examples are presented and questions from the audience are invited.

1. Simple Filesystems
with Python and FUSE
Joseph Scott
http://josephscott.org/

2. Python
http://www.python.org/

3. FUSE - Filesystem in Userspace
http://fuse.sourceforge.net/

4. Why FUSE?
- Non-privileged users
- Simple installation
- Multiple language bindings
C, C++, Java, C#, Python, Perl, Ruby, Lua, etc.
- Easy filesystem experiments

5. FUSE based filesystems
๏ redisfs - http://www.steve.org.uk/Software/redisfs/
๏ Gluser - http://www.gluster.org/
๏ sshfs - http://fuse.sourceforge.net/sshfs.html
๏ gmailfs - http://sr71.net/projects/gmailfs/
๏WikipediaFS - http://wikipediafs.sourceforge.net/
๏ s3fsc - https://github.com/tongwang/s3fs-c

6. FUSE API
getattr( path )
readlink( path )
mknod( path, mode, dev )
mkdir( path, mode )
unlink( path )
symlink( target, name )
rename( old, new )
link( srcpath, targetpath )
fsinit( self )
chmod( path, mode )
chown( path, uid, gid )
open( path, mode )
create( path, mode )
read( path, length, offset )
write( path, data, offset )
getattr( path )
truncate( path, len )
flush( path )
release( path )
fsync( path )
readdir( path )
rmdir( path )
http://sourceforge.net/apps/mediawiki/fuse/index.php?title=FUSE_Python_Reference

7. Another FUSE Presentation
http://www.slideshare.net/matteobertozzi/python-fuse
I learned lots from this,
inspired some of my examples

8. My Approach
Implement the fewest methods
necessary for getting the job done

9. Live Examples

10. Questions?

11. Joseph Scott
http://josephscott.org/
joseph@josephscott.org
@josephscott