Date: Wed, 10 Dec 1997 01:34:27 +0100 From: J Wunsch <j@uriah.heep.sax.de> To: freebsd-scsi@FreeBSD.ORG Cc: Scott Watters <scott.watters@vina-tech.com> Subject: Re: Questions about mt and SCSI subsystem Message-ID: <19971210013427.36373@uriah.heep.sax.de> In-Reply-To: <007601bd04e9$48a33af0$4560f2cf@curious.vina-tech.com>; from Scott Watters on Tue, Dec 09, 1997 at 01:27:42PM -0800 References: <007601bd04e9$48a33af0$4560f2cf@curious.vina-tech.com>
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As Scott Watters wrote: > I did a ktrace on mt and discovered that the driver was NOT > returning an error on the fsf IOCTL. It looks like a driver It really wouldn't have required a ktrace run to tell you this. :-) > problem. I've been looking at the sources, but the EOM logic > escapes me. Has anyone else played with/patched this code? I once tried to fix the EOF bug, but eventually gave up for lack of time understanding all this code, pending flags, etc. (and filed a PR for it). > I know the logic is complex due to asychronous IO and early > returns. But I can't see the forest for the trees. You are not alone. -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)
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