Hi there, what about a port of Unionfs to Solaris ? I read this wouldn't be too hard for someone who knows about filesystems in Solaris.
Unionfs would be perfect for usage within Zones, imagine the following: I want to create 10 Zones, for 10 friends of mine. What I have to do now is COPY all the neccessary files from /bin/.. /lib/.. /sbin/.. to EACH zone, this means I have got 10x wasted space. With Unionfs I could create the perfect solution: Create a directory /opt/zones-template, and copy all the neccessary files into it. Then simply do: mount -t unionfs \ -o dirs=/opt/zone1:/opt/zones-template=ro \ none /opt/zone1 for each zone. 2. line: means the directory /opt/zone1 will overlay /opt/zones-template (which is readable only, so all changes go to /opt/zone1) 3. line: it will be mounted to /opt/zone1 (the filesystem does not recurse, so this is possible) So I don't waste any space, for copying files twice. Also I can update files in /opt/zones-templates, which are then updated in all zones. You see it would be perfect ! Zones are just one example, OpenSolaris Live-CDs would also benefit from Unionfs (take a look at KNOPPIX and other Linux Live-CDs, nearly all of them use Unionfs). Some links: The official Unionfs project site: http://www.fsl.cs.sunysb.edu/project-unionfs.html A nice introduction how to use Unionfs. http://www.linuxjournal.com/article/7714 I am sure a lot of people will like this :) Hope someone will be found who has the time and knowledge to contribute a port of it. Thanks in advance ! Daniel This message posted from opensolaris.org _______________________________________________ opensolaris-discuss mailing list opensolaris-discuss@opensolaris.org
