Brian Cuttler wrote:

Stupid question, how smart is the rait driver for disk ?

If you put the spool area on the output disk will it juggle
the space ok ? Will it know to move the file from one directory

to another (move the file pointer # mv perhaps) rather than having to copy all the bits and then remove the original ?

It's not as simple.  The header of a file on tape is a little
different than the header of a file in the holdingdisk.
E.g. a file in the holdingdisk has provisions to indicate that
it is chunked.  A file on tape is never chunked.
I'm not sure what is done with a very large dump and the
file driver; is it assumed that the filesystem to hold file-dumps
can handle large files?  (Too early in the morning to understand the
sources :-) )

--
Paul Bijnens, Xplanation                            Tel  +32 16 397.511
Technologielaan 21 bus 2, B-3001 Leuven, BELGIUM    Fax  +32 16 397.512
http://www.xplanation.com/          email:  Paul.Bijnens AT xplanation DOT com
***********************************************************************
* I think I've got the hang of it now:  exit, ^D, ^C, ^\, ^Z, ^Q, F6, *
* quit,  ZZ, :q, :q!,  M-Z, ^X^C,  logoff, logout, close, bye,  /bye, *
* stop, end, F3, ~., ^]c, +++ ATH, disconnect, halt,  abort,  hangup, *
* PF4, F20, ^X^X, :D::D, KJOB, F14-f-e, F8-e,  kill -1 $$,  shutdown, *
* kill -9 1,  Alt-F4,  Ctrl-Alt-Del,  AltGr-NumLock,  Stop-A,  ...    *
* ...  "Are you sure?"  ...   YES   ...   Phew ...   I'm out          *
***********************************************************************