topic Re: 'mc' mediachanger Command in Operating System - HP-UX

'mc' mediachanger Command

Farhad Zarrindej_1 — Fri, 04 Feb 2000 08:54:29 GMT

While pleased to see some improvement to the mc command in HPUX 11, I was
disappointed to see that you still do not support the 'invert' or 'flip'
facility as defined in the scsi control strcutures below (from your
media-changer man page).

/* structure for SIOC_MOVE_MEDIUM ioctl */
struct move_medium_parms {
unsigned short transport;
unsigned short source;
unsigned short destination;
unsigned char invert;
};

/* structure for SIOC_EXCHANGE_MEDIUM ioctl */
struct exchange_medium_parms {
unsigned short transport;
unsigned short source;
unsigned short first_destination;
unsigned short second_destination;
unsigned char invert_first;
};

This is causing a lot of problems with our optical libraries. We can move
media into and out of drives and slots and even export them, but cannot flip
them over, thus halving the useful storage capacity of the media at a stroke.
Please can you release a patch to add a parameter to mc so that media inversion
is supported. I do realise this is not relevent for DLT libraries.

Re: 'mc' mediachanger Command

Dan Hull — Fri, 04 Feb 2000 16:35:08 GMT

That is a good suggestion. Unfortunately, these forumns are not monitored by HP
for enhancement request purposes. If you have a support contract, you could
place a support call and submit an enhancement request. There may be a way to
do it through the main HP web page too, but I don't know for sure if there is.

I only mention this so you won't stop here with your suggestion, assuming it
was being considered. Sorry :(

Re: 'mc' mediachanger Command

Farhad Zarrindej_1 — Mon, 07 Feb 2000 04:31:44 GMT

Thanks very much for your response. We do have a contract and I have called
them on this subject before but they weren't very helpful when I suggested they
change it. Ho-hum.