On Mon, Mar 18, 2013 at 12:55:40PM +0800, Amit Karpe wrote: > Brian, > Yes, initially I was using holdingdisk for all config. But when I see > backup is low and taking more time, I had doubt that my backup & > holdingdisk are on same disk (NAS) which is 19TB. So I change it & force > not to use it. > > But now I realized its required so I will use for next usage of Amanda. > > Could someone let me know use of chunksize ? > It should big enough like 10GB or 50GB ? > As I am using Vtape, finally all these temporary files are going > to merge into one file. So why should we create these chunks ? Why not let > dumper directly dump into final vtape's slot directory ? > The holding disk chunksize was added to overcome the 2GB max file size limitation of some filesystems. It is also useful if you allocate multiple holding disks, some which may not be big enough for your large DLEs.
The parts of amanda doing the dumps do not peek to see where the data will eventually be stored. Taper does that part and it is not called until a DLE is successfully dumped. If you are going direct to tape taper is receiving the dump directly but then you can only do one DLE at a time. Jon
