[daip] tape probs

[Eric Greisen]

Ka Chun Yu writes:
 > Hi Eric again,
 > 
 >   1 records of FITS data read correctly
 >   3 records of FITS data read correctly
 >   11879 records of FITS data read correctly
 >   909883 records of FITS data read correctly

        This means that the 4'th file should have around 91000 tape
records.  Your "dd" read 18112 before failing, your tcopy reads only
7216 records before getting one of an improper length (not 1 to 10
time 2880) followed by an EOF.  Usually Exabyte tapes are reliable,
but this one sounds like it is rapidly failing.  Maybe there is
something wrong with your drive.  At some point after you have
extracted all that you can from the tape, you might send it back to us
to see if it can be read fully here.


 > 
 > When I run tcopy on each file, I get back:
 > 
 >   > tcopy /dev/rmt/0ln
 >   file 1: records 1 to 132: size 28800
 >   file 1: record 133: size 2880
 >   file 1: eof after 133 records: 3804480 bytes
 >   eot
 >   total length: 3804480 bytes
 >   > tcopy /dev/rmt/0ln
 >   file 1: records 1 to 189: size 28800
 >   file 1: record 190: size 11520
 >   file 1: eof after 190 records: 5454720 bytes
 >   eot
 >   total length: 5454720 bytes
 >   > tcopy /dev/rmt/0ln
 >   file 1: records 1 to 1324: size 28800
 >   file 1: eof after 1324 records: 38131200 bytes
 >   eot
 >   total length: 38131200 bytes
 >   > tcopy /dev/rmt/0ln
 >   file 1: records 1 to 7216: size 28800
 >   file 1: record 7217: size 24574
 >   file 1: eof after 7217 records: 207845374 bytes
 >   eot
 >   total length: 207845374 bytes
 > 
 > --kachun  +**  Center for Astrophysics and Space Astronomy, CB 389  **+
 >           +**    University of Colorado, Boulder, CO 80309          **+
 >           +**  Email: kachun at casa.colorado.edu                      **+
 >           +**  http://casa.colorado.edu/~kachun                     **+