Re: [Xen-devel] Excellent work; some questions, observations

[John Joganic <jej@xxxxxxxxxxxxx>]

Ian Pratt wrote:

> Once you've installed on your hard disk, you'll need to update
> /etc/xen-mynewdom to grant physical access as appropriate
> for your root partition (plus swap and anything else you want it
> to be able to access).
>
> e.g. to grant read/write access to /dev/sda2. (In xenctl scripts,
> the domain number being operated on is implicit. If you're
> running the commands on the command line use the -n option to
> specify the domain)
>
>  xenctl physical grant -psda2 -w
>  
Is it safe to assume that granting write access to the same root 
partition that domain0 started from would be potentially dangerous, if 
not disasterous?  In which case, a read-only root partition would be 
more appropriate instead.  I have separate partitions for /home /var 
/usr /tmp /boot and /.  I'd like to instantiate a unique but identical 
domain without replicating the entire system.  /usr would easily mount 
read-only.  The rest would probably need to be copied to a virtual 
device on a single / mount.  Any guidance on this?
Thanks!

John Joganic



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