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unionfs

This version was saved 15 years, 11 months ago View current version     Page history
Saved by PBworks
on April 14, 2008 at 3:35:28 pm
 

Union-FS

Union-FS (unionctl, unionfs.o) is a linux kernel module "which can appear to merge the contents of several directories (branches), while keeping their physical content separate".

Version: 1.0.14

Status: Done

 



 

Usage

The unionfs driver must be loaded before attempting to create any union mounts. To load the driver, execute the following command:

 

/sbin/insmod /usr/lib/modules/2.4.17-uc0/unionfs.o

using /usr/lib/modules/2.4.17-uc0/unionfs.o

 

After successfully loading the module, you can remount directories in stacks. To make your /etc writable with a ram overlay, try:

 

mkdir -p /mnt/etc

mount -t ramfs none /mnt/etc

mount -t unionfs none -o dirs=/mnt/etc=rw,/etc=ro /etc

 

To add or change files in /bin, you could use:

 

mkdir -p /usr/rootbin

cp /usr/mytest/dvdplayer.bin /usr/rootbin

mount -t unionfs none -o dirs=/usr/rootbin=rw,/bin=ro /bin

 

For skinning, you could use an HDD mount to mount over /img:

 

mount -t unionfs none -o dirs=/usr/img=rw,/bin=ro /img

 

History

Version 1.0.14 - [John, 2008-04]

  • Ported unionfs to the new kernel.

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