From owner-freebsd-questions@FreeBSD.ORG Tue Nov 17 20:02:09 2009 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id EA3E6106566B for ; Tue, 17 Nov 2009 20:02:09 +0000 (UTC) (envelope-from rsmith@xs4all.nl) Received: from smtp-vbr8.xs4all.nl (smtp-vbr8.xs4all.nl [194.109.24.28]) by mx1.freebsd.org (Postfix) with ESMTP id 693198FC17 for ; Tue, 17 Nov 2009 20:02:09 +0000 (UTC) Received: from slackbox.xs4all.nl (slackbox.xs4all.nl [213.84.242.160]) by smtp-vbr8.xs4all.nl (8.13.8/8.13.8) with ESMTP id nAHK27SG053106; Tue, 17 Nov 2009 21:02:07 +0100 (CET) (envelope-from rsmith@xs4all.nl) Received: by slackbox.xs4all.nl (Postfix, from userid 1001) id D8D00BAC4; Tue, 17 Nov 2009 21:02:02 +0100 (CET) Date: Tue, 17 Nov 2009 21:02:02 +0100 From: Roland Smith To: David Jackson Message-ID: <20091117200202.GB32781@slackbox.xs4all.nl> References: <4B01E2A3.5020305@gmail.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="xXmbgvnjoT4axfJE" Content-Disposition: inline In-Reply-To: <4B01E2A3.5020305@gmail.com> X-GPG-Fingerprint: 1A2B 477F 9970 BA3C 2914 B7CE 1277 EFB0 C321 A725 X-GPG-Key: http://www.xs4all.nl/~rsmith/pubkey.txt X-GPG-Notice: If this message is not signed, don't assume I sent it! User-Agent: Mutt/1.5.20 (2009-06-14) X-Virus-Scanned: by XS4ALL Virus Scanner Cc: freebsd-questions@freebsd.org Subject: Re: Lockup problems on FreeBSD disks X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 17 Nov 2009 20:02:10 -0000 --xXmbgvnjoT4axfJE Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Nov 16, 2009 at 06:39:15PM -0500, David Jackson wrote: > I have a USB hard drive. Whenever I open two programs which utilise the= =20 > USB hard drive simultaneously, these programs, i assume when they=20 > attempt to write to the hard drive lock up due to what i suspect must be= =20 This particular problem is one I haven't seen. But I've had problems with U= SB harddisks freezing when trying to write large files. It seems that not USB<->ATA chipsets are created equal, and the 7.x USB stack seems to have problems with that.=20 > It seems most likely that this is a USB level problem involving the USB= =20 > drivers. I am using FreeBSD 7.1. It is annoying behaviour to say the=20 > least and I wonder what can be done about it, Try 8.0-PRERELEASE. The USB stack has been rewritten for 8.x, and my limited testing so far indicates it to work better with quirky hardware. The problem of a panic when unplugging a mounted USB drive should also be fixed. And even if you still have problems with the 8.x USB stack, I suspect the U= SB stack in 8.x is more likely to receive TLC than the one in 7.x, so it would= be best to check that out. Roland --=20 R.F.Smith http://www.xs4all.nl/~rsmith/ [plain text _non-HTML_ PGP/GnuPG encrypted/signed email much appreciated] pgp: 1A2B 477F 9970 BA3C 2914 B7CE 1277 EFB0 C321 A725 (KeyID: C321A725) --xXmbgvnjoT4axfJE Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.13 (FreeBSD) iEYEARECAAYFAksDAToACgkQEnfvsMMhpyUOuwCfZGWSwA1UqKqCbF06HpSI9XdH PPoAoIHbWL2eWzKZTJnLcT+sHPZxgvRC =hO5D -----END PGP SIGNATURE----- --xXmbgvnjoT4axfJE--