On Fri, 23 Jul 1999 13:32:37 +0200, Kurt Garloff <garloff@suse.de> said:
>> Try this with most SCSI card/driver combinations and you will have
>> trouble. The bus reset performed by the second SCSI card to start up
>> will screw up the operation of the first SCSI card.
> I can not confirm the problem with SCSI resets.
> Basically, a driver has to detect, when a SCSI reset occurs.
Yep. I believe the Buslogic drivers have been fine in this respect ro
ages, and afaik the Adaptec ones should also work OK. What is missing
is systematic testing of these configurations, of course.
> Ii has to tell the mid-layer that all commands already sent were aborted
> (DID_RESET) and reset it's negotiation params (Sync, Wide). That's all,
> basically.
In principle it's not really different fromt he retry work we already
have to do on a host-originated bus reset.
> I see another problem: The box which mounts the FS read-only will have
> inconcsistent buffers and you'll probably see lots of fs warnings.
Yes. Unless you are using raw IO with some synchronisation protocol
running between the two hosts, you need to make sure that only one host
has the device mounted at once.
--Stephen
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