Neil Harvey ([log in to unmask]) wrote:
: Greetings, O Knowledgable Ones
 
: I am trying to read DAT's (produced on our HP9000), with tar on the
: HP3000.
: (Why? because I want to throw the HP9000 away)
 
: The DAT's were written by tar as multiple blocks, i.e. 250
: subdirectories, each one holding 100 files.
 
: So, I need to seek to a specific tape mark (subdirectory), then tell
: /bin/tar to -xvf a certain file.
 
: So far I have mknod'ed the device as follows mknod "/dev/tape70" 0 70 and
: tar -tvf /dev/tape70 shows me the first block of 100 records.
 
I hope you type in mknod "/dev/tape70" c 0 70.
 
I was wondering what block size the tar tape is.  MPE can only go up to
16K bytes for a block.  Maybe if you specify a 16K block size on the UNIX
side, MPE will be able to read.  I'm just guessing, but loading tar tapes
from UNIX was tested.
 
Rick Ehrhart
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