From owner-freebsd-stable@FreeBSD.ORG Sat Oct 24 19:39:03 2009 Return-Path: Delivered-To: freebsd-stable@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 9229A106566B for ; Sat, 24 Oct 2009 19:39:03 +0000 (UTC) (envelope-from bf1783@googlemail.com) Received: from mail-ew0-f218.google.com (mail-ew0-f218.google.com [209.85.219.218]) by mx1.freebsd.org (Postfix) with ESMTP id 2AE628FC1A for ; Sat, 24 Oct 2009 19:39:02 +0000 (UTC) Received: by ewy18 with SMTP id 18so9472054ewy.43 for ; Sat, 24 Oct 2009 12:39:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=gamma; h=domainkey-signature:mime-version:received:date:message-id:subject :from:to:cc:content-type; bh=j/GosQnvjp/acRKYg3SAxSpbd9VXmHOqgXfkNwUs6A4=; b=xLAvkSWC+ez3bbZPDLT+zeohP/dg0S/wmSjhjaZnw1lpO3nSg/8isZO33JocmnpRap QCbI9l4eXrHlIq0CLC1M9+XL+Zm9KxiaSReoMqfjr8eXjifnObNhuGgxQFjUBhlhUrjb iqx/lYjlNDmkH7SG2rY6OrMV8TV6ipGnm+PYA= DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:cc:content-type; b=VrsaGMhtM1WhCliZevFiZyZTIj+iW2c3RG6jz0cqh8iS8c3EWQxcl1+hwHhgAxsnKU 1v+oC93Gzc6fQaCE/9fxomw+qTk9L6wvbPhgm64pjyTc1LCKuUbOLEmFUQ/FELQ9JQay ECQra1If7iAwZxu0svLDfWRwnaAFS8m8dohDY= MIME-Version: 1.0 Received: by 10.216.91.67 with SMTP id g45mr1467836wef.190.1256411220423; Sat, 24 Oct 2009 12:07:00 -0700 (PDT) Date: Sat, 24 Oct 2009 19:07:00 +0000 Message-ID: From: "b. f." To: areilly@bigpond.net.au Content-Type: text/plain; charset=ISO-8859-1 Cc: freebsd-stable@FreeBSD.org Subject: Re: Some questions about da0 on USB2 (recent bad behaviour) X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 24 Oct 2009 19:39:03 -0000 >That is: it seems to work fine for some fraction of a minute >(doesn't seem to be longer than a minute, anyway), and then >stops completely for several minutes (processes reading or >writing sit in "D" state in ps) and then starts again, after >logging "Request completed with CAM_REQ_CMP_ERR\nRetrying >Command". In the past week or so, Alexander Motin (mav@FreeBSD.org) and Andrew Thompson (thompsa@FreeBSD.org) have made a number of related changes to cam and usb in the P4 repository, and in 9-CURRENT. Some of these may address your problem. I'm not sure when they will be back-ported to 8.X. You may wish to try out the latest version of -CURRENT, to see if it solves your problem(s); or to contact them. b.