[daip] aips tape write error

[Eric Greisen]

Janet Shaw writes:

 > >   Okay, I tested the AIPS tape writing again and there is definitely 
 > > something wrong with writing to the exabyte (unless by some fluke my 
 > > exabyte is bad, but I don't at the moment have another one to test this on). 
 > > I am able to read from exabyte and I am able to read to and write from 
 > > DAT, but I don't seem to be able to write to the exabyte. I get the error:
 > > 
 > > skippe> FITTP1: ZTPWAT: ERROR   5 FOR LUN = 31 IBUFF = 1 TO TAPE
 > > skippe> FITTP1: ZERROR: IN ZTPWA2 ERRNO = 5 (I/O error)
 > > skippe> FITTP1: This usually means unexpected BEGINNING-OF-TAPE

       This is odd to me - errno 5 does not mean IERR = 5

 > > skippe> FITTP1: TAPIO: ERROR   5  WRITING FILE
 > > skippe> FITTP1: ERROR WRITING UV BINARY DATA TO TAPE:      5
 > > skippe> FITTP1: Appears to have ended successfully
 > > 
 > > If I don't try to write at the end of the tape or:
 > > 
 > > skippe> FITTP1: skipper      15OCT99 TST: Cpu=       0.1  Real=       2
 > > skippe> FITTP1: Task FITTP  (release of 15OCT99) begins
 > > skippe> FITTP1: Writing to tape drive number   1
 > > skippe> FITTP1: Advancing tape to end-of-information
 > > skippe> FITTP1: ZTAPE: LUN 31 BEG.TAPE AT   1 OP OF AEOI/AEOI SYS ERR 
 > > CODE 0000
 > > skippe> FITTP1: Purports to die of UNNATURAL causes
 > > skippe> FITTP1: skipper      15OCT99 TST: Cpu=       0.0  Real=       2
 > > 
 > > if I do try to write to EOT. There is nothing on this tape so I would 
 > > think that either of these would work. 

     If there is nothing on the tape then there is no end of
information so this might be expected to fail.

What kind of computer are you using, what version of what operating
system?  We may well also need some detailed info about the
installation parameters of the tape device itself, but let's start
with some of the basics...

Eric Greisen