From owner-freebsd-stable@FreeBSD.ORG Fri Apr 18 18:03:20 2008 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 90574106566B for ; Fri, 18 Apr 2008 18:03:20 +0000 (UTC) (envelope-from kometen@gmail.com) Received: from an-out-0708.google.com (an-out-0708.google.com [209.85.132.245]) by mx1.freebsd.org (Postfix) with ESMTP id 446818FC1C for ; Fri, 18 Apr 2008 18:03:20 +0000 (UTC) (envelope-from kometen@gmail.com) Received: by an-out-0708.google.com with SMTP id c14so194669anc.13 for ; Fri, 18 Apr 2008 11:03:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; bh=aepE+w1GCxWvQSwRwc4NDxUinRFvYoQDJ/JPxgmaUns=; b=NDkSepxpFqplVHdmLdSXKPEk+q3eVnIduA+VfczYBrNDp3nUvgo/pau3G+zYSPnzo9G5fpAELVVUcJkBBadKoJuf93CZYGnh/DuMD+5j7k96COIT7WZpQtuQpg1MWvTknt7ZjkdbzXJAri2MFCqbSOOHo7HcnzaUL+GWjikSvjw= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=Tf5LAP8f2w+ItD2bkZgwX08jEfo4+K8xnKvpiy+erXh2C/pswKJMdzpH/bGVEdwoesnkFo4pSiNP+hQNkyNykneurbB0TqMstYZU4Yzfl/64O1I8TW2C5rOHM8r8mkA/FS3EmG2MhEKzeUHA/eFMsrXFaS8dtK33gvXp81SAMRg= Received: by 10.100.194.5 with SMTP id r5mr5648123anf.146.1208541799383; Fri, 18 Apr 2008 11:03:19 -0700 (PDT) Received: by 10.100.228.15 with HTTP; Fri, 18 Apr 2008 11:03:19 -0700 (PDT) Message-ID: Date: Fri, 18 Apr 2008 20:03:19 +0200 From: "Claus Guttesen" To: jbsnyder In-Reply-To: <16763410.post@talk.nabble.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <16447331.post@talk.nabble.com> <16491496.post@talk.nabble.com> <33644d3c0804151005r17095cb1n33117a8e4d8cc09b@mail.gmail.com> <16763410.post@talk.nabble.com> Cc: freebsd-stable@freebsd.org Subject: Re: ZFS & Bittorent -> Hang? 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: Fri, 18 Apr 2008 18:03:20 -0000 > OK. I've been able to reproduce the issue. > > Conditions: > - Stock shipped kernel and modules from RELENG 7.0 > > loader.conf settings: > - zfs prefetch enabled > - zfs zil disabled > - vm.kmem_size_max="1073741824" > - vm.kmem_size="1073741824" > > AMD64 on Core 2 Duo w/ 4 GB RAM > > raidz across 4 disks, using root on zfs (also experienced this hang with zfs > just on /usr) > > How To Reproduce > - install transmission-daemon, run transmission-daemon (it will daemonize, > automatically backgrounding) > - grab a torrent, such as KNOPPIX (http://torrent.unix-ag.uni-kl.de/) > - transmission-remote -a (add the torrent) > - transmission-remote -s all (start all the torrents) > > wait hours to a day or so with whatever you want logging things running and > active since anything that hits disk after the hang will get hung as well > > I've just done this twice. It doesn't seem to happen with zil enabled and > prefetch off. > > Expected Behavior > No hang. Thank you for spending time on this. I'm getting some jbod-storage in a few weeks and will spend some time using various block-sizes and share partitions across nfs. I'm somewhat confident that zfs on FreeBSD will work fine but Solaris is (of course) also an option. This will be approx. 7 TB to begin with and growing upwards to some two digit TB's. What is the largest storage zfs on FreeBSD has been used on? I tried it for some month on 8 TB. -- regards Claus When lenity and cruelty play for a kingdom, the gentlest gamester is the soonest winner. Shakespeare