From owner-freebsd-stable@FreeBSD.ORG Mon Feb 27 07:40:35 2012 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 0A26A106568D for ; Mon, 27 Feb 2012 07:40:35 +0000 (UTC) (envelope-from peter.maloney@brockmann-consult.de) Received: from moutng.kundenserver.de (moutng.kundenserver.de [212.227.126.171]) by mx1.freebsd.org (Postfix) with ESMTP id 976F58FC23 for ; Mon, 27 Feb 2012 07:40:34 +0000 (UTC) Received: from [10.3.0.26] ([141.4.215.32]) by mrelayeu.kundenserver.de (node=mreu0) with ESMTP (Nemesis) id 0MZ9Wi-1RjIuz0wUW-00Ktid; Mon, 27 Feb 2012 08:40:33 +0100 Message-ID: <4F4B3370.7020302@brockmann-consult.de> Date: Mon, 27 Feb 2012 08:40:32 +0100 From: Peter Maloney User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.23) Gecko/20110922 Thunderbird/3.1.15 MIME-Version: 1.0 To: freebsd-stable@freebsd.org References: <4F4B0F83.4090600@norma.perm.ru> In-Reply-To: <4F4B0F83.4090600@norma.perm.ru> X-Enigmail-Version: 1.1.2 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Provags-ID: V02:K0:+yDMWWpxzaevNY2ymi2409l9LDZp6p+bnZJScEyWJCf v//ThD7oXlLHDrPfZdqdjod+F8w9p/tK7OBj4DQsvEU9bATJ05 jsFPiuLqf2rNYaIXWd/aIGSFPxfA9mujMsKDafG1hK0JbYLPUt 9o/jEcT7oC6STWNcwy4R8HbGmn3sEt01yRwBSLvO5oZjtSNf4B 6C29mfWMlbwGEbMkI4s1HFcbuNMLdr11eqTVAreErt1XXGFVfj rRGpzhEvP/WBogcOIebD/wDSPJgbY/WI6ioFscnVfpnbeukuBF xku2Z3oITUgEqbfI9IGm/IKEd0J/yoyEDRwUr7M0Yf2z5eVIoZ UYtv4A0S179whDY/Db4lOZ+8NmWzonCZhpcXTlXa5 Subject: Re: zfs, 1 gig of RAM and periodic weekly X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 27 Feb 2012 07:40:35 -0000 On 02/27/2012 06:07 AM, Eugene M. Zheganin wrote: > Hi. > > I'm haunted by a weird bug. > Some of my servers (IBM x3250) hang periodically. And this is always > saturday morning. Different servers in different cities, all with zfs > and one gig of RAM. And yeah, it's periodic weekly. I can say more - > it's repeatable. 25 minutes ago I typed 'periodic weekly', and 5 > minutes ago I lost this machine from the network (even stopped > answering to ICMP). This can be solved by any of two methods - either > increase RAM, or turning off periodic weekly. > > loader.conf (doesn't help): > > zfs_load="YES" > vfs.root.mountfrom="zfs:zfsroot" > ng_iface_load="YES" > ng_ether_load="YES" > vm.kmem_size="330M" > vm.kmem_size_max="330M" > vfs.zfs.arc_max="30M" > > This is 8.2-RELEASE/amd64. 8.2-RELEASE is highly unstable with ZFS in my opinion. For example, my system with 48 GB of RAM would hang or crash for no apparent reason in random intervals. Upgrading in September fixed most of it, except 1 random hang possibly related to NFS, and a hang when renaming snapshots with zvols [new problem after 8.2-RELEASE, PR 161968]. The renaming snapshot with zvols hang seems fixed since update again in February. Still unresolved though is that restarting nfsd makes nfsd hang until reboot. I don't know if 8.2-RELEASE had that problem. You should consider an update with csup. Make sure you test and monitor after the upgrade, in case some other funny issues come up, like my restarting nfsd issue. But of course I chose that over random hangs and panics. And one word of advice: If you want to upgrade your pools to v28, I think you should consider recreating your pools as v28 rather than upgrading. There are some side effects to upgrading, such as logs that can't be removed. > > The most important question - what to report and how to report this ? > > Thanks. > Eugene. > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" -- -------------------------------------------- Peter Maloney Brockmann Consult Max-Planck-Str. 2 21502 Geesthacht Germany Tel: +49 4152 889 300 Fax: +49 4152 889 333 E-mail: peter.maloney@brockmann-consult.de Internet: http://www.brockmann-consult.de --------------------------------------------