vserver Howto/FAQ

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Is it possible to use hard links between vservers or the root server

Yes, hard link are low level and work across chroot(). This is exactly what the vunify command is doing to save disk space. Using the immutable ext2 file attribute, you can share files between virtual server and be sure none can change them.

In fact, newvserver default to create unified vservers (vservers sharing common files using hard links). Using the new immutable-linkage-invert, vserver are sharing common file, using much much less disk space (a common vserver is between 20-40 megs) yet they can be updated independently without side effects.