[daip] Problem reading data from a remote tape drive

[Eric Greisen]

jorstad writes:
 > Hi,
 > 
 > I have installed 31DEC04 AIPS version on PC with platform FEDORA that is
 > something like RedHat 11.0. I don't have a local tape drive and want to 
 > use a tape drive
 > on another LINUX computer. However, while I can successfully mount the tape,
 > AIPS will not read it.
 > 
 > Following the Guide to the Install Wizard, I edited the files  TPDEVS.LIST
 > and TPHOST in /sjet02/aips/DA00 (/sjet02/aips is AIPS HOME DIRECTORY);
 > the files are shown below. The computer with the tape drive is 
 > buast0.bu.edu.
 > 
 > TPDEVS.LIST:
 > # Host     Device-name    Comment
 > BUAST0    /dev/nst0       4mm tape drive
 > 
 > TPHOST:
 > # Default as-shipped configuration has "localhost" to disable any remote
 > # access completely.
 > localhost
 > buast0.bu.edu
 > 127.0.0.1
 > 
 > I used mount:
 >  >inp mount
 > AIPS 1: MOUNT:    Verb to software mount a tape
 > AIPS 1: Adverbs     Values                 Comments
 > AIPS 1: ----------------------------------------------------------------
 > AIPS 1: INTAPE        1                    Tape unit # (0=> 1)
 > AIPS 1: DENSITY    6250                    Density to set on mount.
 > AIPS 1: REMHOST    'BUAST0                    Remote computer name
 > AIPS 1:              '
 > AIPS 1: REMTAPE       1                    Remote tape drive number
 >  >
 > which seemed to work, giving me hope:
 >  >mount
 > AIPS 1: Mounted on ANSI SCSI 2 tape on host buast0
 > 
 > However, "fitld"  does not work:
 > sjet.b> FITLD1: Task FITLD  (release of 31DEC04) begins
 > sjet.b> FITLD1: Reading tape drive number   1
 > sjet.b> FITLD1: ZTPOPR: REMOTE TAPE SYSTEM RETURNS ERROR CODE     99
 > sjet.b> FITLD1: ZTPOPN: REMOTE OPEN ERROR  99 TO
 > sjet.b> FITLD1: TAPIO: ERROR  99 OPENING FILE
 > sjet.b> FITLD1: ERROR      8 OPENING TAPE
 > sjet.b> FITLD1: Purports to die of UNNATURAL causes
 > sjet.b> FITLD1: sjet         31DEC04 TST: Cpu=       0.0  Real=  
 > 

This error arises if the remote machine is using an older version of
AIPS and the callig machine is using the latest version.  The versions
need to be the same.

Eric Greisen