From owner-freebsd-fs@FreeBSD.ORG Fri May 1 16:27:25 2015 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 4DBA3603 for ; Fri, 1 May 2015 16:27:25 +0000 (UTC) Received: from smtp.hostage.nl (smtp.hostage.nl [109.72.93.221]) by mx1.freebsd.org (Postfix) with ESMTP id 186F11DE5 for ; Fri, 1 May 2015 16:27:24 +0000 (UTC) Date: Fri, 1 May 2015 18:26:37 +0200 From: Martijn To: Tom Evans Cc: FreeBSD FS Subject: Re: ZFS stuck on write Message-ID: <20150501162635.GA19681@kobol.datajust.com> References: <20150430134659.GA4950@kobol.office.hostage.nl> <20150430161902.4868094c@robert-notebook> <20150430143017.GA5573@kobol.office.hostage.nl> <20150501130924.GA12031@kobol.datajust.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.23 (2014-03-12) X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 01 May 2015 16:27:25 -0000 Wow can you do that? Nice one, thanks! I'll try it tonight. Once upon a 01 May 2015, Tom Evans hit keys in the following order: > On Fri, May 1, 2015 at 2:09 PM, Martijn wrote: > > I'm gonna look into this with more detail, because i still want to pin-point > > the exact problem and if its really due to broken hardware. > > > > Is my assumption true that the boost in memory (the new machine has 32GB > > instead of 24GB) also could be the cause that everything works again? If i > > remember correctly a lot sysctl settings have their defaults based on the total > > amount of ram. I'm still wondering if there's some kind of setting(s) that > > would help if there's just too many filesystems+snapshots around. Or is that > > not something that could have been the cause of these problems? > > > > Stick "hw.physmem=24G" in /boot/loader.conf and reboot. Do you have > problems on the new server? > > Cheers > > Tom -- Hostage Keizersgracht 316 1016 EZ Amsterdam tel: +31 (0)20 4632 303 http://www.hostage.nl