From owner-freebsd-questions@FreeBSD.ORG Tue Oct 1 14:03:31 2013 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id A26D950E for ; Tue, 1 Oct 2013 14:03:31 +0000 (UTC) (envelope-from feld@FreeBSD.org) Received: from out4-smtp.messagingengine.com (out4-smtp.messagingengine.com [66.111.4.28]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 776DF2DBF for ; Tue, 1 Oct 2013 14:03:31 +0000 (UTC) Received: from compute2.internal (compute2.nyi.mail.srv.osa [10.202.2.42]) by gateway1.nyi.mail.srv.osa (Postfix) with ESMTP id D633120D9E for ; Tue, 1 Oct 2013 09:53:46 -0400 (EDT) Received: from web3 ([10.202.2.213]) by compute2.internal (MEProxy); Tue, 01 Oct 2013 09:53:46 -0400 DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d= messagingengine.com; h=message-id:from:to:mime-version :content-transfer-encoding:content-type:subject:date:in-reply-to :references; s=smtpout; bh=o/4HOBR1+y/KP5sJ221TePq+1Gc=; b=hIr4I MmLez3XtsxcLh5tAdBXDmLgy7DggGpQk+0my6jxGYBXwX2Qm20j3+thW30FFTIbp g8LIRpBFhuFiW4G+Corwi6iQswX4MwSp3SPAwxnN1HoWNvrUKy9pH2eiGy8g3gPG OgM8NfgjAozBK1mz8PnfeJsv20TTg7JFuPGp5U= Received: by web3.nyi.mail.srv.osa (Postfix, from userid 99) id 343AAB00005; Tue, 1 Oct 2013 09:53:46 -0400 (EDT) Message-Id: <1380635626.30998.28633073.5EC751F5@webmail.messagingengine.com> X-Sasl-Enc: DpwfbtXsiro+zudKX4xm2zv6z1RwUqq9F43H2WqLZ9Yy 1380635626 From: Mark Felder To: freebsd-questions@freebsd.org MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain X-Mailer: MessagingEngine.com Webmail Interface - ajax-ce174988 Subject: Re: FreeBSD 9.2-RELEASE stability? Date: Tue, 01 Oct 2013 08:53:46 -0500 In-Reply-To: <201309301901.NAA28515@mail.lariat.net> References: <201309301901.NAA28515@mail.lariat.net> X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 01 Oct 2013 14:03:31 -0000 On Mon, Sep 30, 2013, at 14:01, Brett Glass wrote: > How stable are folks finding FreeBSD 9.2-RELEASE to be? The > improvements are welcome, but there have been a few troubling > messages about kernel panics and VM issues on the various mailing > lists. It's never clear until the release drops whether these are > actual problems with the software or hardware defects in individual > systems, so I am eager to hear how the new release is working for > everyone. > I upgraded our two main backup servers which are doing I/O via rsync/rsnapshot and sending ZFS snapshots to the other remote site every 15 minutes. I had several instances where the machines went unresponsive. They didn't panic, and they did respond to CTRL+ALT+DEL on the console, but they lost all networking and wouldn't do anything else. The only change was I enabled zfs prefetch which I previously had disabled for performance reasons. It never caused this issue on 9.1 when I had it enabled, though. The fix definitely was turning off prefetch again which doesn't bother me too much, but I can't use this environment to try to help debug it as it's important production data.