Been there done that. You already mentioned the (IMHO only) caveat: If 
you snapshot a zvol or zfs containing the root fs of a running guest, it 
need not be consistent. (The transactional safety of ZFS has no chance 
to "secure" your fs in that setup)

Regards
Martin

Lara Matthews wrote:
> Hi All
>  
> I was wondering if you can help me.  I want to create a stand alone 
> server with a single tape drive attached.  On this server I would like 
> to run 1 x Controller/ IO domain and 3 x guest domains.
>  
> All guest domains would be given a separate zfs from one zpool made up 
> from internal disks.  Can I use the IO domain to run zfs snapshot of the 
> running guests or will the guests need to be shut down and unbound 
> before the IO domain would be able to access the zfs directories?
>  
> I understand that any snapshot of the root file system of a guest domain 
> while the guest domain is running could be inconsistent but I am just 
> wondering if it is possible at all.
>  
> Many thanks
>  
> Lara
> 
> 
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> 
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-- 
Martin M?ller                 martin.mueller at sun.com
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