From owner-freebsd-current@FreeBSD.ORG Mon Oct 17 11:50:31 2005 Return-Path: X-Original-To: freebsd-current@freebsd.org 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 CAD6916A41F for ; Mon, 17 Oct 2005 11:50:31 +0000 (GMT) (envelope-from danny@cs.huji.ac.il) Received: from cs1.cs.huji.ac.il (cs1.cs.huji.ac.il [132.65.16.10]) by mx1.FreeBSD.org (Postfix) with ESMTP id 648BE43D49 for ; Mon, 17 Oct 2005 11:50:31 +0000 (GMT) (envelope-from danny@cs.huji.ac.il) Received: from pampa.cs.huji.ac.il ([132.65.80.32]) by cs1.cs.huji.ac.il with esmtp id 1ERTVe-0008l5-Eu; Mon, 17 Oct 2005 13:50:30 +0200 X-Mailer: exmh version 2.7.0 06/18/2004 with nmh-1.0.4 To: am-utils@fsl.cs.sunysb.edu Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Mon, 17 Oct 2005 13:50:30 +0200 From: Danny Braniss Message-ID: Cc: freebsd-current@freebsd.org Subject: 6.0-RC1/amd 6.1.2.1: mount stuck X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 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: Mon, 17 Oct 2005 11:50:31 -0000 problem: /cs/share is atomounted, but mount(NFSv3/UDP) is stuck ps alwx | grep amd 0 395 1 0 96 0 1764 1784 select Ss ?? 0:00.20 /SBIN/amd -p -a /a -l /var/log/amd -x all -D all /usr/local hesiod.lo ... 0 511 395 208 -1 0 1764 1784 nfsreq D ?? 0:00.00 /SBIN/amd -p -a /a -l /var/log/amd -x all -D all /usr/local hesiod.lo ... a gcore of 511, shows that it's stuck in the mount syscall. this seems to be some kernel timming/race problem, because: 1- it does not happen with a slower cpu. 2- it does not happen if the mount sequence is slight different 3- it does not happen with the older amd 6.0.10-2004051. btw, kern.smp.disabled=1, the problem still exists. I don't think it's the server, a NetAPP, because all other mounts are ok. danny