Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!convex!mic!letni!rwsys!merch!cpe!adaptex!adaptx1!neese
From: neese@adaptx1.UUCP
Newsgroups: comp.periphs.scsi
Subject: Re: SCSI hang
Message-ID: <283400110@adaptx1>
Date: 13 May 91 17:30:47 GMT
References: <29829@dsl.pitt.edu>
Lines: 23
Nf-ID: #R:dsl.pitt.edu:29829:adaptx1:283400110:000:1018
Nf-From: adaptx1.UUCP!neese    May 13 09:43:00 1991


>/* ---------- "Re: SCSI hang" ---------- */
>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.

If the error message is correct, this is a serious error.  Increasing the
number of mailboxes will not help as there are an equal number of MBI's
and MOB's.  If the MBO was found there has to be an equivalent MBI.  This
would be best addressed by Everex.

			Roy Neese
			Adaptec Senior SCSI Applications Engineer
			UUCP @  neese@adaptex
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