From owner-freebsd-fs@FreeBSD.ORG Fri Jan 10 13:11:48 2014 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 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 851A7516 for ; Fri, 10 Jan 2014 13:11:48 +0000 (UTC) Received: from people.fsn.hu (people.fsn.hu [195.228.252.137]) (using TLSv1 with cipher ADH-CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 30B041A7F for ; Fri, 10 Jan 2014 13:11:47 +0000 (UTC) Received: by people.fsn.hu (Postfix, from userid 1001) id 92F22128CF36; Fri, 10 Jan 2014 14:11:45 +0100 (CET) X-Bogosity: Ham, tests=bogofilter, spamicity=0.062375, version=1.2.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MF-ACE0E1EA [pR: 10.9161] X-CRM114-CacheID: sfid-20140110_14114_D4733187 X-CRM114-Status: Good ( pR: 10.9161 ) X-DSPAM-Result: Whitelisted X-DSPAM-Processed: Fri Jan 10 14:11:45 2014 X-DSPAM-Confidence: 0.9941 X-DSPAM-Probability: 0.0000 X-DSPAM-Signature: 52cff191583254147318591 X-DSPAM-Factors: 27, From*Attila Nagy , 0.00010, >+On, 0.00049, wrote+>, 0.00189, wrote+>, 0.00189, >+>>, 0.00255, >+>>, 0.00255, On+Fri, 0.00301, >>+>>, 0.00362, From*Attila, 0.00438, Subject*ZFS, 0.00477, shell, 0.00477, wrote, 0.00520, wrote, 0.00520, References*fsn.hu>, 0.00583, Nagy+wrote, 0.00655, Received*online.co.hu+[195.228.243.99]), 0.00872, Received*[195.228.243.99]), 0.00872, Received*online.co.hu, 0.00872, From*Attila+Nagy, 0.00872, Received*(japan.t, 0.00872, From*Nagy++No, 0.00872, zpool, 0.01000, 0+84, 0.01000, Received*japan.t, 0.01000, X-Spambayes-Classification: ham; 0.00 Received: from japan.t-online.private (japan.t-online.co.hu [195.228.243.99]) by people.fsn.hu (Postfix) with ESMTPSA id D9F5F128CF23; Fri, 10 Jan 2014 14:11:43 +0100 (CET) Message-ID: <52CFF18F.5040809@fsn.hu> Date: Fri, 10 Jan 2014 14:11:43 +0100 From: Attila Nagy MIME-Version: 1.0 To: Dmitry Morozovsky Subject: Re: What does ZFS write when nothing should write there? References: <52CFA0B6.7090109@fsn.hu> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: 'freebsd-fs' X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 10 Jan 2014 13:11:48 -0000 On 01/10/14 14:08, Dmitry Morozovsky wrote: > On Fri, 10 Jan 2014, Attila Nagy wrote: > >> I've created 6 zpools, each of them with zpool create -m /data/A dataA mirror >> daX daY. >> The machine has nothing running except sshd and my shell. >> >> Yet, I see this in gstat: > [snip] > >> 0 88 0 0 0.0 82 573 4.1 9.0 da5 >> 0 89 0 0 0.0 83 573 4.8 9.8 da6 >> 0 87 0 0 0.0 81 573 2.6 5.7 da9 >> 0 89 0 0 0.0 84 573 3.0 6.7 da10 > Did you turn off atime? > No, but how does it matter? The process list is the following: init, getty, sshd, csh and the pool is completely empty.