Multivolume Backups

[Jerome_V_Vollborn at cup.portal.com]

Some time ago there was a discussion of retrieving files from a 
multivolume backup on tape.  I didn't save that information and 
now I need it.  Could some kind soul mail me the solution (or 
post it if you feel it is appropiate).  If I receive email and there 
is an expression of interest I will, of course, post the information.

Details of the problem:  

    Configuration:  386 clone (DTK mother board with Phoenix BIOS),
                    Everex interface card and Wangtek drive
                    Maxtor 318 Mb disk drive
                    Microport 3.0e plus QIC-02 streaming driver

    Commands:  Tapes created with cpio -olvB | strm

               Retreival attempted with cpio -ivBdu < /dev/mt/rmt 0
                                   and  strm | cpio -ivBdu

    Results:  First tape reads and ends with a message about out of sync
              and second tape (read attempted with the same command) is
              rejected as not being a cpio tape.

    Guesses:  I think the second tape would have to be read from a cpio 
              or strm continuation command to be valid.  I don't see a 
              flag in cpio or strm that says this is a multivolume tape.
              Since I didn't see a flag, I rashly assumed that cpio was 
              smart enough to put a to be continued marker at the end of 
              the first tape.

Help.  Thanks in advance.

                                        Jerome Vollborn
                                        (Jerome_V_Vollborn at portal.com or
                                         uunet!lci386!jerome)
                                        Days:  (408) 721 7284
                                        Evenings:  (408) 244 5452