Union FS
This may well be the most useful and powerful "new" puppy around. Used by
Knoppix and others to "merge" the CD image file system with the operational
ramdisk FS and with a user's FS (no longer restricted to a /home/user).
Magic. A normal mount replaces the mount point's visible contents with what
is being mounted. Union FS merges them!
/usr partition is too full? Move part of it elsewhere and use them both. Want
inidividual users to have their own software which runs off common libs as
required? Can do. Separate the "distro" from the "users"? Very nice.
OK. There are "ufs" items on the kernel sources and apt shows union-fs
packages. How do these relate and what needs be installed to make use of
this? Configuration? What happens to fs-tab?
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