huge file, spanning multiple tapes
Jacques A. Vidrine
nectar at FreeBSD.org
Thu May 1 14:38:45 PDT 2003
I thought this would be an easy problem to solve, but I haven't found
a decent solution after a bit of looking.
I have a huge file, say 73GB. I need to dump it to tapes that have
a capacity of about 33GB each (but there is hardware compression, so
there is no exact capacity).
If the file would fit on a single tape, I'd just use good 'ole dd(1).
I figured, heck, somebody is _bound_ to have written a simple utility
that, say, reads from a pipe and writes to tape (or vice versa), and
prompts for a tape switch when it hits end-of-tape. But alas, I
cannot find such a beast.
Using dump, cpio, etc is not really an option. I need to be able to
later read the data from tape into a pipe without it hitting disk.
Anybody have bright ideas?
Jacques Vidrine . NTT/Verio SME . FreeBSD UNIX . Heimdal
nectar at celabo.org . jvidrine at verio.net . nectar at freebsd.org . nectar at kth.se
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