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Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!news.cs.su.oz.au!inferno.mpx.com.au!news.unimelb.EDU.AU!munnari.OZ.AU!news.ecn.uoknor.edu!solace!nntp.uio.no!news.kth.se!tybalt.admin.kth.se!celsiustech.se!seunet!news2.swip.net!nike.volvo.se!cyklop.volvo.se!peter From: peter@cyklop.volvo.se (peter hakanson) Newsgroups: comp.unix.bsd.bsdi.misc,comp.sys.hp.hardware Subject: Re: HP C1533A DDS-2 SCSI Tape Drive Hangs Followup-To: comp.unix.bsd.bsdi.misc,comp.sys.hp.hardware Date: 5 Jun 1996 15:55:21 GMT Organization: Volvo Corp. Lines: 58 Message-ID: <4p4al9$bkd@nike.volvo.se> References: <4p1k7f$9b6@news.inforamp.net> NNTP-Posting-Host: cyklop.volvo.se X-Newsreader: TIN [version 1.2 PL2] Xref: euryale.cc.adfa.oz.au comp.unix.bsd.bsdi.misc:3925 comp.sys.hp.hardware:15560 We have problems with exabyte DAT devices, (repackaged as "storage line" but it is usual exabyte 4 Gbyte i think) They identify as "st0 at tg0 unit 0: EXABYTE EXB-4200c rev 217 (SCSI- 2) DAT cassette streaming (512) tape" These problems seems to be specific to thosee drives, older 8mm exabyte works reliably. What happens here is that the device misses to respond, and from there on reboot is the only way of removing the hanging dump/mt/tar or whatever command that was active. And yes, we have to use (n)rst0_f8mm in order to be able to read the tapes, have probebly to do with blocking.. We use adaptec 154x boards (which work good with various disks and 8mm exabyte). Regards peter h markjr@shmooze.net (markjr@shmooze.net) wrote: : Anyone know about these Tape Drives or SCSI drives (external) in : general? The system sees the drive fine, but after an arbirtrary : amout of reading or writing, the whole box hangs. : i've tried: : tar cf /dev/rst0 /whatever/* : alternating with different device files like: /dev/rst0_dds /dev/nrst0_dds, : /dev/rst0_ddsII /dev/nrst0_ddsII to no avail, and any of the fixed record : block devices, i.e. /dev/rst0_fixed or /dev/rst0_fdds, cause a kernel panic. : It's a DAT drive and came with some 2 and 4 gig (uncompressed) tapes. : I had a similar prob. under linux, but the mt cmd on slackware has : a format cmd that takes care of it (IDE drives tho). : Not overly familiar with SCSI buses, would changing the SCSI ID : (currently 4) impact this kind of thing? (I can't see any conflicts), : what about the bios settings (most of them sutiably tweaked to deal : with the internal SCSI bus). The drive is external, so I disabled : the bios termination. I believe the external terminator is a "passive" : one. Would the external drive have a different SCSI controller ID than : the internal? At the moment they're all on 0. Hmmm. : Any info appreciated. : -- : |||| mark jeftovic ||||| http://www.shmOOze.net/~markjr |||| : |||| p r i v a t e w o r l d ||||| http://cool.as.fuck.shmOOze.net |||| : ------------------------------------------------------------------------------ : Get out when you want it. It gets harder once you need it. -- -- Peter Hakanson VolvoData Dep 2580 phone +46 31 66 74 27