Path: utzoo!mnetor!uunet!husc6!think!bloom-beacon!gatech!ncar!oddjob!gargoyle!ddsw1!karl From: karl@ddsw1.UUCP (Karl Denninger) Newsgroups: comp.unix.microport Subject: Re: Misc uport bugs and observations Message-ID: <924@ddsw1.UUCP> Date: 4 Apr 88 18:38:32 GMT References: <4387@b-tech.UUCP> <1446@bigtex.uucp> Reply-To: karl@ddsw1.UUCP (Karl Denninger) Organization: Macro Computer Solutions, Inc., Mundelein, IL Lines: 53 Summary: Various comments on uport driver problems with Sv/386 In article <1446@bigtex.uucp> james@bigtex.UUCP (James Van Artsdalen) writes: >IN article <4387@b-tech.UUCP>, zeeff@b-tech.UUCP (Jon Zeeff) wrote: >> Dcopy doesn't seem to work. A dcopy from one 4096 drive to another seemed to >> work ok, but fsck found many errors (too many to fix). > >Bet you were bit by the dual-drive-failure bug. To my experience, that bug >is still with us on the 386: it just doesn't print the error message any more. >I had trouble with the WD1003 and WD1006: don't have a second drive to test >the WD1007 with. Yep; this I have seen on everything from the Televideo systems to a Generic WA2 to whatever.. The strange thing is that it's not consistant; on one system it will occur, on another nearly *identical* one it will not. Strange. Xenix works great on both, by the way... >> When using a WD1006-WAH controller, the system will hang if it encounters a >> drive error. > >> Uport unix doesn't seem to reset the disk and try again when it encounters a >> disk error. > >Is this related to the WD1006 problem reported above? I assume so. Not necessarially. Tatung WA2 "compatible" controllers blow up in the same manner; the system just goes to sleep. Uport has also done something even worse to me once or twice; after the first disk error, EVERY WRITE after that point was junked. Guess how much of my disk was left by the time I figured that one out and hit ? >Be aware that the INSTALL script on the Build disk assumes that if you don't >have a Televideo, you're using 3:1 interleave. Dumb assumption with the >WD1006 or WD1007 (ie, Compaq 386/20 with the 150meg hard disk or PC's Ltd >with the 300meg drive). You have to modify the build disk to use 1:1 >interleave and have the bad sectors marked correctly. Send to address in >above paragraph for details... There's more.... From what I can see if you DO say you have a Televideo the system does some strange things as well. CORETEST reports 450K/second transfer when the Televideo system has been formatted at 1:1 under MSDOS. You can't prep the disk low-level under DOS if you're going to use it with UNIX; seems as though you *MUST* low-level format to get the bad-track table on there (so says their tech support... why?). In any event, the formatter goes ahead and uses 2:1 interleave, with NO CHOICE! AARRGGHHH!!!! Only 240K/second transfer rate results, 1/2 what the system is capable of. It would be nice if we could use the nicities of the hardware.... ---- Karl Denninger | Data: +1 312 566-8912 Macro Computer Solutions, Inc. | Voice: +1 312 566-8910 ...ihnp4!ddsw1!karl | "Quality solutions for work or play"