From owner-freebsd-jail@FreeBSD.ORG Sun Nov 16 10:15:10 2008 Return-Path: Delivered-To: freebsd-jail@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id D50551065672; Sun, 16 Nov 2008 10:15:10 +0000 (UTC) (envelope-from bzeeb-lists@lists.zabbadoz.net) Received: from mail.cksoft.de (mail.cksoft.de [62.111.66.27]) by mx1.freebsd.org (Postfix) with ESMTP id 88E6D8FC19; Sun, 16 Nov 2008 10:15:10 +0000 (UTC) (envelope-from bzeeb-lists@lists.zabbadoz.net) Received: from localhost (amavis.str.cksoft.de [192.168.74.71]) by mail.cksoft.de (Postfix) with ESMTP id 2861A41C650; Sun, 16 Nov 2008 11:15:08 +0100 (CET) X-Virus-Scanned: amavisd-new at cksoft.de Received: from mail.cksoft.de ([62.111.66.27]) by localhost (amavis.str.cksoft.de [192.168.74.71]) (amavisd-new, port 10024) with ESMTP id hw6Sj9eZNrJC; Sun, 16 Nov 2008 11:15:05 +0100 (CET) Received: by mail.cksoft.de (Postfix, from userid 66) id 8491341C65F; Sun, 16 Nov 2008 11:15:05 +0100 (CET) Received: from maildrop.int.zabbadoz.net (maildrop.int.zabbadoz.net [10.111.66.10]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.int.zabbadoz.net (Postfix) with ESMTP id 21622444888; Sun, 16 Nov 2008 10:10:37 +0000 (UTC) Date: Sun, 16 Nov 2008 10:10:36 +0000 (UTC) From: "Bjoern A. Zeeb" X-X-Sender: bz@maildrop.int.zabbadoz.net To: Lorenzo Perone In-Reply-To: <2192B50F-16AE-4BC8-ACEC-6C5B99804DA0@yellowspace.net> Message-ID: <20081116100529.Y61259@maildrop.int.zabbadoz.net> References: <2192B50F-16AE-4BC8-ACEC-6C5B99804DA0@yellowspace.net> X-OpenPGP-Key: 0x14003F198FEFA3E77207EE8D2B58B8F83CCF1842 MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: freebsd-jail@freebsd.org, freebsd-stable@freebsd.org Subject: Re: hangs for 7.1-PRE [was: problem possibly related to multi-ip jail patch?] X-BeenThere: freebsd-jail@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: freebsd-stable@freebsd.org List-Id: "Discussion about FreeBSD jail\(8\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 16 Nov 2008 10:15:11 -0000 On Sun, 16 Nov 2008, Lorenzo Perone wrote: Hi, > I've been experiencing problems with one of the machines running FreeBSD > 7.1-PRERELEASE #2: Thu Oct 16 20:23:09 CEST 2008 with the multi-ip patch > bz_jail7-20080920-01-at150161.diff, and I'm wondering if it possibly related > to the patch - in any case, any advice would be very welcome. bottom line is that most of this looks less likely to be a jail problem. > It happens that mysql (tried both 4.0 and 5.1, in 2 separate jails), at some > time stop responding to connections, and mysql gets stuck in sbwait state. It > is only killable with kill -9 Yeah, I had been seeing mysql hang or go to 99% CPU for years once in a while; it's been more rare the last months. I have seen it in- and outside of jails, with or without patches. You could try to see if you can get backtraces of those processes. > each of the two mysqlds is running in a jail on one private IP, serving > connections to a webserver nearby - the latter having one public and one > private IP, communicating with the other jail via the private network. > > I also experienced two complete system hangs (which must not be necessarily > related to the mysql problem) both during a shutdown -r now. one was a panic, > in another case the machine was still pingable but did not shut down > completely. I could only reset it over the DRAC. here's a screenshot I made > over the Dell RAC: http://lorenzo.yellowspace.net/stuck.png Looking at your image I see more problems before the shutdown so this as well is most likely not a jail problem. > Since I'm also using zfs there and the kernel has been built with the DTRACE > options. > > any advice (also about which more details that I should/could provide) would > be very welcome... I am Cc:ing the answer to stable@ and setting reply-to: to move the discussion there. /bz -- Bjoern A. Zeeb Stop bit received. Insert coin for new game.