Date: Thu, 9 Feb 1995 19:56:21 +1596657 (MET) From: Wilko Bulte <wilko@yedi.iaf.nl> To: rgrimes@gndrsh.aac.dev.com (Rodney W. Grimes) Cc: bde@zeta.org.au, FreeBSD-hackers@FreeBSD.org, vak@cronyx.msk.su Subject: Re: Using seagate driver with Future Domain 950: :-( Message-ID: <199502091856.TAA00546@yedi.iaf.nl> In-Reply-To: <199502091736.JAA22018@gndrsh.aac.dev.com> from "Rodney W. Grimes" at Feb 9, 95 09:36:46 am
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> > >loop this time, but the drive was incorrectly identified as holding > > >a cdrom size 400000 x 2048 blocks. An attempt to mount a CD resulted > > >in a panic: sea0:2:0 timed out, sending message invalid phase STATIN > > > > 40* x 2048 seems to be a standard magic number that results if media > > detection is not working. It also happens for the Ultrastor driver > > if the media is not present. > > Here is the source of that magic number, from sys/scsi/cd.c: > if (blksize < 512) > blksize = 2048; /* some drives lie ! */ > if (size < 100) > size = 400000; /* ditto */ Very nice coding: if you can't get better info just assume something. Would be nice to have in some banking application ;-) > that command returned success. Seems that some drives and/or controllers > are returning bad data :-( In this case it is not the drive, that one works fine when used with an Adaptec 1540 Wilko _ __________________________________________________________________________ | / o / / _ Wilko Bulte email: wilko@yedi.iaf.nl |/|/ / / /( (_) Private FreeBSD site - Arnhem - The Netherlands --------------------------------------------------------------------------------
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