> I just tried to find some ways how to let the Amanda (taper phase of 
> backup process) to create files avoiding Large Files Problem (LFP). For 
> example, i can do it using the following command under FreeBSD-4.x:
> 
> ssh MyHost dump -0 -u -a -f /MyBigBigBigSlice > MyHost.MyBigBigBigSlice.0.dump
> 
> The same way is used in Amanda but in dumper phase only. But when taper is 

Got it now.

I defined small chuncks on the holding disks, typically 1GB, because I
think that if the dumper meets a disk full, there will be less issue
on a small chunk than on a big one (less data lost and dump to be
restarted).

So I assumed that your virtual tapes were always MUCH bigger than your
holding disk chunks, so holding disk would never hit LFP.

Olivier