dump and the tk50

[Richard Korry]

In article <82 at e2big.dec.com> zemon at e2big.dec.com (Art Zemon    SwsE/ACES) writes:
>Try making your life much easier.  Type "/etc/dump 9u {filesystem}"
>and be done with it.  Dump will use an ioctl to determine the
>density and type of tape.

In the interest of making my life easier I tried this and got:
  DUMP: Estimates based on 1200 feet of tape at a density of 6670 BPI...
  DUMP: This dump will occupy 691 (10240 byte) blocks on 0.11 tape(s).
Which is fine excepy according to the spec sheet the tk50 cartridge
holds 600 ft, not 1200 ft. If (691*10240) = 7Mb and that is .11 of the
tape then the tape holds 64Mb or so. Again, the spec sheet says it holds
131Mb unformatted. If the answer is "dump is brain dead, ignore it." fine
with me, I just don't want to run off the end of the tape or not use half
the tape 'cause dump don't know whats what.