[Xen-users] Re: UnionFS in initrd

[Charles Duffy <cduffy@xxxxxxxxxxx>]

Dennis wrote:
> I've played around with UnionFS a bit.  I like the idea for a COW file
> system.
It doesn't work properly right now for a root FS running a completely 
unmodified distribution; there are some bad interactions with procfs 
(/proc/<pid>/exe ends up pointing at the particular UnionFS branch 
rather than at the UnionFS filesystem itself, which confuses a number of 
distributions' tools for checking daemon status), and the unionfs patch 
I've been using to override this issue via changing /proc's symlink 
resolution is a bit crashy (though there are newer proposed patches I 
haven't been able to test with yet). See my posts on 
gmane.comp.file-systems.unionfs.general and the surrounding threads.

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