How can I find out how much space a given host uses in backup?

One method would be to do:

# du -sh pc/somehost


But this is an "expensive" operation (lots of IO) and it can take really 
long (i.e. days).


Are there any other methods? The web interface only gives values per 
backup#, but it does not reveal total values for a given host.


-- 
Tomasz Chmielewski
http://wpkg.org

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