From owner-freebsd-fs@FreeBSD.ORG Sun Oct 10 22:00:30 2010 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id DFA77106564A for ; Sun, 10 Oct 2010 22:00:30 +0000 (UTC) (envelope-from gallasch@free.de) Received: from smtp.free.de (smtp.free.de [91.204.6.103]) by mx1.freebsd.org (Postfix) with ESMTP id 46EB58FC13 for ; Sun, 10 Oct 2010 22:00:29 +0000 (UTC) Received: (qmail 99491 invoked from network); 11 Oct 2010 00:00:28 +0200 Received: from smtp.free.de (HELO orwell.free.de) ([91.204.4.103]) (envelope-sender ) by smtp.free.de (qmail-ldap-1.03) with AES128-SHA encrypted SMTP for ; 11 Oct 2010 00:00:28 +0200 References: <39F05641-4E46-4BE0-81CA-4DEB175A5FBE@free.de> <20101009111241.GA58948@icarus.home.lan> <4CB17983.3020907@icyb.net.ua> In-Reply-To: <4CB17983.3020907@icyb.net.ua> Mime-Version: 1.0 (Apple Message framework v1081) Content-Type: text/plain; charset=us-ascii Message-Id: Content-Transfer-Encoding: quoted-printable From: Kai Gallasch Date: Mon, 11 Oct 2010 00:00:28 +0200 To: Andriy Gapon X-Mailer: Apple Mail (2.1081) Cc: freebsd-fs@freebsd.org Subject: Re: Locked up processes after upgrade to ZFS v15 X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 10 Oct 2010 22:00:31 -0000 Am 10.10.2010 um 10:29 schrieb Andriy Gapon: > on 09/10/2010 16:37 Kai Gallasch said the following: >> I must repeat. I offer my help if someone wants to dig into the = locking problem. =20 >=20 > Kai, >=20 > I would like to look into this. > Can you provide shell access to a system that exhibits the behavior? > Or even better serial console for remote debugging, if possible. Andriy, glad to hear this :) I can give you root access and serial = console access to a secondary server, that also showed the same lockups, = like the big server. I'll mail you the details. > Also, can you first try with the very latest stable/8 or even head? Yes, I can do so if it's what you want, but wouldn't you loose the = chance to identify the real reason for the lockups? If a new kernel with your changes to ZFS sources makes the locking = situation disappear, could we be sure that the real reason for the = stuck, unkillable processes was fixed? My proposal: I'll do my best to trigger the known bug on the current = kernel and let you know. You have a look at this and when you are done = gathering data I'll build a new kernel and see if the problem persists. > I have recently MFC-ed a few improvements to ZFS code. The server you will connect to runs on a 8.1-STABLE from Mon Oct 4 = 01:19:41 CEST 2010. So your commits were after Oct 4th? = http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/cddl/contrib/opensolaris/uts= /common/fs/zfs/?sortby=3Ddate#dirlist Or is this the wrong place in the src tree? Kai.=