[daip] Re: FITLDing CD-ROMs

[Eric Greisen]

      Please use daip so that the rest of the group (one with much ore
system expertise) can see the messages.  That person replied to me

Has he tried copying the file on to a hardrive?  If it works from the
hard-drive there maybe permissions issues with the cd/dvd drive. If it
fails from the hardrive, have him try changing the name of the file
and see if that does it i.e.get rid of the + in the file name.

Looking at the messages below I see some odd stuff - IMLOD and FOTLD
use the same routine for "tape" opens and should get the same result.
IMLOD found the file but could not add a non-blocking lock to the
file.  FITLD could not find the file.  Is the CD really mounted a a
true disk or is it a FAT32 file system or some such?

Eric Greisen


Jim Condon writes:

 > I'm trying to read the FITS file named 015958+37235 in the directory
 > /Volumes/Untitled/export/data/jcondon/postage.dir/
 > which I exported as $E before starting aips.
 > 
 > I tried loading infile = 'E:015958+37235' with both FITLD and IMLOD, and got
 > the following messages on MSGSRV:
 > 
 > sherry> FITLD1: Task FITLD  (release of 31DEC05) begins
 > sherry> FITLD1: ZTPOPN: DISK DEVICE = E:015958+372351 NOT FOUND
 > sherry> FITLD1: TAPIO: ERROR   2 OPENING FILE
 > sherry> FITLD1: ALSO COULD NOT OPEN E:015958+37235
 > sherry> FITLD1: ERROR      8 OPENING TAPE
 > sherry> FITLD1: Purports to die of UNNATURAL causes
 > sherry> FITLD1: sherry       31DEC05 TST: Cpu=        .0  Real=       0
 > 
 > sherry> IMLOD1: Task IMLOD  (release of 31DEC05) begins
 > sherry> IMLOD1: Reading from disk file: E:015958+37235
 > sherry> IMLOD1: ZERROR: ON FILE E:015958+37235
 > sherry> IMLOD1: ZERROR: IN ZTPOPD ERRNO = 45 (Operation not supported)
 > sherry> IMLOD1: TAPIO: ERROR   6 OPENING FILE
 > sherry> IMLOD1: MLTAPE: COULD NOT OPEN TAPE.  IER=      8
 > sherry> IMLOD1: Purports to die of UNNATURAL causes
 > sherry> IMLOD1: sherry       31DEC05 TST: Cpu=        .0  Real=       0
 > 
 > In my aips window, I also got:
 >  >go imlod
 > ZLOCK: Operation not supported
 > AIPS 1: Resumes
 > 
 > Jim
 > 
 > 
 > Eric Greisen wrote:
 > 
 > >Jim Condon writes:
 > >
 > > > I tried treating a CD-ROM as a disk file in FITLD.  FITLD failed, 
 > > > perhaps because the CD-ROM has no write permission.  Could FITLD be 
 > > > changed to read data directly from a CD-ROM?
 > >
 > >We do it fairly often - there is no need for write permission.
 > >
 > >In fact we have used DVDs as AIPS disks including RW as full AIPS
 > >disks (that only worked some times depending on device type, driver,
 > >etc).  They have worked fine as read-only file systems.
 > >
 > >Send me info on what you do and what FITLD says.
 > >
 > >Eric Greisen
 > >
 > >  
 > >