Re: [Xen-users] UnionFS + Xen

[Anthony Liguori <aliguori@xxxxxxxxxx>]

Gino LV. Ledesma wrote:

> Hi, list
>
> Has anyone gotten something similar to work? Any ideas / tips /
> comments / suggestions in doing so? I'm tweaking my xen RPM spec file
> to support unionfs and right now just looking at the boot up process
> of getting the domain to mount something else on top of the exported
> root file system (either a file-backed VBD or yet another NFS export).
>  
This is actually a large part of the paper for this presentation at OLS:

http://www.linuxsymposium.org/2005/view_abstract.php?content_key=117

There's a number of approaches to solving this problem.  unionfs would 
be ideal but it's a bit unstable.  Another approach is to keep certain 
directories read only (like /usr, /bin, /lib, /sbin, etc.) and others 
read write (/etc, /var/, etc.).  This will get you pretty far.
Regards,

Anthony Liguori

> gino ledesma
>
> P.S. If there's anything waaaay simpler than this, I'd really like to
> know. :-) I'm having fun playing with xen but will need to see how
> this setup scales.
>
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>  

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