Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!uunet!seismo!gatech!hao!husc6!cmcl2!brl-adm!adm!eichelbe@nadc.arpa From: eichelbe@nadc.arpa (J. Eichelberger) Newsgroups: comp.unix.wizards Subject: SI 9900 hangs Message-ID: <8269@brl-adm.ARPA> Date: Mon, 13-Jul-87 10:23:26 EDT Article-I.D.: brl-adm.8269 Posted: Mon Jul 13 10:23:26 1987 Date-Received: Tue, 14-Jul-87 05:40:00 EDT Sender: news@brl-adm.ARPA Lines: 47 We are running 4.3 BSD UNIX on a VAX 11/780. We have a problem with 9766-disk related hangs on our VAX. We have a Systems Industries (SI) 9900 controller connected to three 9766 drives. We have the controller set in the SI-mode instead of the "act like a true RM05 from DEC" mode. Bu we still use the hp driver from the 4.3 BSD. Every so often we get a system hang. All activity on the SI controller stops. Hitting the reset on the toggle switch restarts everything. Most of the time we don't see any error messages. If we do see one, it's hp0: not ready Has anyone seen this type of problem? Our field service if trying to blame the problem on the hp driver since dumps of various memory locations (we halt the machine when we hang and do EXAMINEs of various memory locations per the field service) indicate, they say, that the driver is not resetting an error state. I want to know why I get an error in the first place!!! They can't answer that. Well, anyway, the last register dump we gave them indicated that the drive status register for drive #1 (counting from 0) had an error. The register contained 51C0, and from some manual they decoded the value as follows: VV set=Volume Valid DRY set=Drive Ready DPR set=Driver Present MOL=Medium Online ERR set=Error and Error Register #1 contained 4000, supposedly meaning Bit 14 set=Unsafe (Huh???) There is all kind of other stuff available from the dump, but I won't bother you with it here. If anyone can help, please drop me a line. Maybe a driver fix can be made. Maybe field service should analyze the 9766 for problems. I think the latter is in order. We are using the standard 4.3 BSD hp.c for the driver. Thank you. Jon Eichelberger eichelbe@NADC.ARPA