From owner-freebsd-fs@FreeBSD.ORG Fri Jan 10 13:08:28 2014 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 1E0F6290 for ; Fri, 10 Jan 2014 13:08:28 +0000 (UTC) Received: from woozle.rinet.ru (woozle.rinet.ru [195.54.192.68]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 9BCEC1A08 for ; Fri, 10 Jan 2014 13:08:27 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by woozle.rinet.ru (8.14.5/8.14.5) with ESMTP id s0AD8PbX040806; Fri, 10 Jan 2014 17:08:25 +0400 (MSK) (envelope-from marck@rinet.ru) Date: Fri, 10 Jan 2014 17:08:25 +0400 (MSK) From: Dmitry Morozovsky To: Attila Nagy Subject: Re: What does ZFS write when nothing should write there? In-Reply-To: <52CFA0B6.7090109@fsn.hu> Message-ID: References: <52CFA0B6.7090109@fsn.hu> User-Agent: Alpine 2.00 (BSF 1167 2008-08-23) X-NCC-RegID: ru.rinet X-OpenPGP-Key-ID: 6B691B03 MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.4.3 (woozle.rinet.ru [0.0.0.0]); Fri, 10 Jan 2014 17:08:25 +0400 (MSK) 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 13:08:28 -0000 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? -- Sincerely, D.Marck [DM5020, MCK-RIPE, DM3-RIPN] [ FreeBSD committer: marck@FreeBSD.org ] ------------------------------------------------------------------------ *** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck@rinet.ru *** ------------------------------------------------------------------------