John: Thanks for the reply. I will double-check that termination power comes from more than one device. I do have an active terminator (with an LED indicator). When I turn off the library, the indicator light goes out. So, it appears you are correct and the library is providing termination. I agree that it is a bad thing to turn off devices while up and running, but sometimes you just don't have a choice. When the library hangs up while users are on the system (including outside clients), I can't just shut everything down. In any event, *almost nothing* should crash a running system, no matter how dumb, right? Power switches to the server excluded, of course. :-) -----Original Message----- From: John Andersen [mailto:jsa@pen.homeip.net] Sent: Saturday, August 09, 2003 3:38 AM To: eraskin@paslists.com; SuSE-linux-e@suse.com Subject: Re: [SLE] SLES8 kernel panic when powering SCSI devices on/off on AIC7XXX driver On Friday 08 August 2003 06:39, Eric Raskin wrote:
I can generate a kernel panic at will by turning this device off or on. This concerns me a bit, because any mistake can crash my system! :-/ Here is the kernel panic I've received, extracted from /var/log/messages:
Where is termination power comeing from? If from the tape, it might be a problem if the tape gets powerd down. You might try term power from the controller. (In most cases you can have more than one device supplying termination power and not have a problem). I also never rely on the built in terminators on any scsi device and prefer to supply seperate active terminators. I have similar external tape drives and can shut them off and the server keeps on running. (Spits a few nasty-grams into the log, but still runs). All in all, its a bad idea to power off scsi devices if you can avoid it... -- _____________________________________ John Andersen -- Check the headers for your unsubscription address For additional commands send e-mail to suse-linux-e-help@suse.com Also check the archives at http://lists.suse.com Please read the FAQs: suse-linux-e-faq@suse.com