[Voyage-linux] Installation for CF/flash and classic HDD, aufs/unionfs

[Johan Adler]

I have an Alix2d13 and want it to boot from CF and then use a HDD,
external USB HDD, for directories that either receives frequent writes
or needs much space. My candidates are /usr, /var, /tmp and /home.

With this setup I do not think I would need the default Voyage
directory synchronisation, nor any tmpfs linked to these directories.
The most elegant solution would likely be an overlay file system such
as aufs or unionfs, but even after looking through most of the Voyage
scripts I am not certain how to accomplish this.

I ran a simple test, creating the /usr and /var directories on a HDD,
copying the contents from CF to it and making simple symlinks from CF
to the new locations ('ln -s /media/hdd/var /var'), it works but I
imagine that an overlay solution would be more elegant. With my "quick
fix" the usual Voyage scripts keep working as if it was all on a flash
memory that should be protected.

Has anyone else attempted a solution like this, maybe succeded? I
found earlier messages indicating that "punkytse" has been using at
least aufs, and there is still some code in the Voyage scripts
mentioning aufs.


Johan Adler
Stockholm, Sweden