zfs discuss - Nov 2005 - No Compression Regex?

While zfs makes it easy to divide up projects/etc and set compression on each,
I''m curious how it handles files that can''t be compressed.

Home directories are a good example where I would like to use compression, but I
could have mp3''s, pictures, etc.

Instead of burning cpu cycles, would it make sense to have tunable
regex''s to disable compression based on filenames?  (*.mp3, *.jpg, etc)

Just throwing it out there.
This message posted from opensolaris.org

> Home directories are a good example where I would like to use compression,
> but I could have mp3''s, pictures, etc.
> 
> Instead of burning cpu cycles, would it make sense to have tunable
regex''s
> to disable compression based on filenames?  (*.mp3, *.jpg, etc)
Yes, we''re looking into that.  There are actually a number of options.
We could set policy for a file based on its name or its magic number,
or we could continuously adapt based on how well the data compresses.

In any case, the goal would be to automate this so that the end user
doesn''t have to worry about it.  The code should be smart enough to
figure this out.

Jeff