From owner-freebsd-scsi Sat Aug 16 23:21:19 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.5/8.8.5) id XAA10151 for freebsd-scsi-outgoing; Sat, 16 Aug 1997 23:21:19 -0700 (PDT) Received: from sax.sax.de (sax.sax.de [193.175.26.33]) by hub.freebsd.org (8.8.5/8.8.5) with SMTP id XAA10143 for ; Sat, 16 Aug 1997 23:21:15 -0700 (PDT) Received: (from uucp@localhost) by sax.sax.de (8.6.12/8.6.12-s1) with UUCP id IAA13058; Sun, 17 Aug 1997 08:21:14 +0200 Received: (from j@localhost) by uriah.heep.sax.de (8.8.7/8.8.5) id IAA19114; Sun, 17 Aug 1997 08:12:39 +0200 (MET DST) Message-ID: <19970817081239.KP35653@uriah.heep.sax.de> Date: Sun, 17 Aug 1997 08:12:39 +0200 From: j@uriah.heep.sax.de (J Wunsch) To: freebsd-scsi@FreeBSD.ORG (FreeBSD SCSI Mailing List) Cc: grog@lemis.com (Greg Lehey) Subject: Re: Bus resets. Grrrr. References: <199708170129.KAA03776@freebie.lemis.com> <19970817075001.XE28042@uriah.heep.sax.de> <19970817153114.20533@lemis.com> X-Mailer: Mutt 0.60_p2-3,5,8-9 Mime-Version: 1.0 X-Phone: +49-351-2012 669 X-PGP-Fingerprint: DC 47 E6 E4 FF A6 E9 8F 93 21 E0 7D F9 12 D6 4E Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) In-Reply-To: <19970817153114.20533@lemis.com>; from Greg Lehey on Aug 17, 1997 15:31:14 +0930 Sender: owner-freebsd-scsi@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk As Greg Lehey wrote: > > What makes you think these are `recoverable'? > > The disks recover. Well, sorta. After a bus reset. That's close to powering them off... > Interesting. The tape in question is a > Conner^H^H^H^H^H^HArchive^H^H^H^H^H^H^HSeagate changer--see the dmesg > output below for more info. But that doesn't seem to be the problem: > it's always the Micropolis disk which has the timeout. Can you move one of them to the other SCSI bus? > My question (which you omitted): does this have to be fatal for the > tape? Sure. The bus didn't accept any command. The bus reset is a (hmm, how does the SCSI standard call this?), at least a hardware thing. You're asserting it as a signal on the entire bus. Naturally, this aborts all operations. I gotta leave more detailed explanations to Justin, it's beyond my point of wisdom then. -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)