info-vax (07/06/82)
>From dove@mit-dspg@mit-mc Mon Jul 5 23:50:55 1982
On an old emulex controller we had a problem with overlapped seeks. The
problem was that the controller could interrupt due to seek completion
even when a different drive was busy with a transfer. Since the driver
assumed dec hardware which blocked such seek interrupts for the duration of
the transfer, when it got the seek interrupt, it assumed that the transfer
had completed, and everything broke! Our fix was to check in the interrupt
routine for controller ready. If not, go to the end of the interrupt
routine where the rmustart routine is called for each drive with as set.info-vax (07/06/82)
>From greep@RAND-UNIX Tue Jul 6 15:09:55 1982
Once again I urge and implore people to say what operating system they
are talking about when it is relevant. Your message is likely of great
interest to people with Emulex hardware and some operating system, but
which one?