[comp.unix.sysv386] SCSI hang

bill@unixland.uucp (Bill Heiser) (05/04/91)

This morning, my 386/25 machine (Adaptec 1542b, 3 scsi disks, 1 tape) 
was hung, with the following message on the console:

WARNING:  AHA:  mailbox-in not found

I was able to type a username at the console (and virtual consoles),
but got no response.  A forced cold boot was required.  What does this
error mean, and what would cause it?

The machine is running Esix Rev D.

Thanks in advance,
Bill
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km@dsl.pitt.edu (Ken Mitchum) (05/05/91)

In article <1991May4.151834.280@unixland.uucp> bill@unixland.uucp (Bill Heiser) writes:
>This morning, my 386/25 machine (Adaptec 1542b, 3 scsi disks, 1 tape) 
>was hung, with the following message on the console:
>
>WARNING:  AHA:  mailbox-in not found

I don't know if this indicates that a mailbox can't be located, or
allocated, or there aren't enough available. If you simply need more
mailboxes, you may be able to increase the number allocated. I don't
know about Esix, but with ISC Unix this number is AHA_NUM_MBOX which
is defined in /usr/include/sys/aha1540.h.

 Ken Mitchum KY3B
 km@cs.pitt.edu