Re: Fibre channel driver documentation

On Nov 14, 9:55 pm, FrankS <sapie...@xxxxxxxxxx> wrote:
Is the PG or FG device driver interface documented?  I looked in the I/
O User's reference quickly and didn't spot anything.

I'm hoping to find a way of forcing a host to re-login to a given
fibre channel device (in this case, an MDR) after that device has been
powered off.

I know I can do this using SYS$ETC:FC$CP to toggle interrupt
coalescing, but whenever I use that utility all the disks on the SAN
go through a mount verification and it freaks out the operators.  If I
can avoid freaking anyone out then it would be a good thing.

The root issue here is that I need to power cycle the MDR so that it
will rediscover attached SCSI devices, and then make them available to
the host systems.  I've also tried the remapfcscsi command, which the
documentation states will redo the discovery, but it doesn't redo the
discovery.

Given no existing utility then I thought I'd look at the driver
interface to see if I can roll my own.


Perhaps you can do something with

SYSMAN IO SCSI_PATH_VERIFY
then
SYSMAN IO AUTOCONFIGURE

or IO FIND_WWID etc

See
http://h71000.www7.hp.com/doc/83final/6048/6048pro_078.html#startsubcommand_460
.

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