>>> On Fri, Jun 20, 2008 at 11:14 AM, in message
<[EMAIL PROTECTED]>, Scott Rohling
<[EMAIL PROTECTED]> wrote: 
> You could start looking at 'read only' or 'shared' root and other
> filesystems..   the idea revolves around having guests LINK a master copy of
> Linux root file system or other filesystem in RO.  Then bind mounting that
> with RW areas for config files, logs, etc..   Potentially a huge amount of
> DASD savings depending on how many Linux guests you run..
> 
> Here's a great redbook on the topic:
> http://www.redbooks.ibm.com/abstracts/redp4322.html?Open

I think you can get the majority of the benefit by sharing /usr read-only 
without going to the much more complex environment of having / be read-only.  
(My root file systems are only about 300-400MB, while /usr is 4 or 5 times that 
in size.)


Mark Post

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