From owner-freebsd-current@FreeBSD.ORG Wed Mar 3 14:07:27 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id C209916A4CE for ; Wed, 3 Mar 2004 14:07:27 -0800 (PST) Received: from crf-consulting.co.uk (82-44-220-218.cable.ubr10.haye.blueyonder.co.uk [82.44.220.218]) by mx1.FreeBSD.org (Postfix) with ESMTP id 315AF43D39 for ; Wed, 3 Mar 2004 14:07:27 -0800 (PST) (envelope-from nik@freebsd.org) Received: from [192.168.1.150] ([192.168.1.150]) by crf-consulting.co.uk (8.12.9p2/8.12.9) with ESMTP id i23M7PIP055434 for ; Wed, 3 Mar 2004 22:07:25 GMT (envelope-from nik@freebsd.org) Mime-Version: 1.0 (Apple Message framework v612) Content-Transfer-Encoding: 7bit Message-Id: <22B16B3E-6D5F-11D8-BDE4-000393863D48@freebsd.org> Content-Type: multipart/signed; protocol="application/pgp-signature"; micalg=pgp-sha1; boundary="Apple-Mail-2--887293525" To: current@freebsd.org From: Nik Clayton Date: Wed, 3 Mar 2004 22:07:17 +0000 X-Pgp-Agent: GPGMail 1.0 (v30, 10.3) X-Mailer: Apple Mail (2.612) Subject: System hangs with vnode backed md(4) devices -- still a problem? X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 03 Mar 2004 22:07:27 -0000 --Apple-Mail-2--887293525 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Toward the end of last year, through to earlier this year, -current had a problem with vnode backed md(4) devices. Specifically, truncate -s 6G foo.md mdconfig -a -t vnode -f foo.md -u 0 newfs /dev/md0 mount /dev/md0 /mnt rsync /large/amount/of/data /mnt would cause the rsync process to eventually get stuck in a wdrain state, and other processes in the system would gradually hang -- processes were still running, but doing anything that might need to read from a buffer caused the process to hang. Eventually, everything would be hung. If I'm reading the mailing lists right, this was supposed to be solved here: http://lists.freebsd.org/pipermail/freebsd-current/2003-November/ 013183.html However, I'm still seeing the problem in -current from Jan 14th. So I'm wondering if anyone else is seeing it, and if not, a rough idea of when it was fixed. I'm trying to avoid the pain of updating to a very recent current (nVidia issues, having to spend days rebuilding ports) if the problem still exists. Cheers, N --Apple-Mail-2--887293525 content-type: application/pgp-signature; x-mac-type=70674453; name=PGP.sig content-description: This is a digitally signed message part content-disposition: inline; filename=PGP.sig content-transfer-encoding: 7bit -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.3 (Darwin) iD8DBQFARlcZk6gHZCw343URAqjiAJ95yG9s94u0OdosWsS8xjE6EogjIwCfTte/ e2j8jO8yZzXA9tOLJjfyomY= =YkIX -----END PGP SIGNATURE----- --Apple-Mail-2--887293525--