Date: Fri, 8 Sep 2000 14:54:25 -0700 (PDT) From: campt@miralink.com To: freebsd-gnats-submit@FreeBSD.org Subject: kern/21139: IBM DNES drives need 'quirk table' entry. Message-ID: <20000908215425.1F34A37B423@hub.freebsd.org>
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>Number: 21139 >Category: kern >Synopsis: IBM DNES drives need 'quirk table' entry. >Confidential: no >Severity: serious >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: change-request >Submitter-Id: current-users >Arrival-Date: Fri Sep 08 15:00:01 PDT 2000 >Closed-Date: >Last-Modified: >Originator: Tracy Camp >Release: 3.1 and 4.0 >Organization: Miralink Corp >Environment: 4.0-RELEASE with generic >Description: IBM DNES drives do not support more than 64 tagged queued commands and the default settings for maxtags is 255 which is problematic. Under heavy write loads this leads to a system crash. >How-To-Repeat: Install a DNES drive and perform disk operations. >Fix: Add quirk entry in cam/cam_xpt.c for this drive (see below) that limits maxtags to 32. { /* DNES docs state on page 203 that this device only * supports 64 queued commands. 9gig and 18gig devices P/N * DNES-318350 and DNES-309170. campt@miralink.com */ { T_DIRECT, SIP_MEDIA_FIXED, "IBM", "DNES*","*"}, /*quirks*/0, */mintags*/2,/*maxtags*/32 } >Release-Note: >Audit-Trail: >Unformatted: To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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