From owner-freebsd-fs@FreeBSD.ORG Wed Oct 2 16:59:59 2013 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 ESMTP id 6CC0B255 for ; Wed, 2 Oct 2013 16:59:59 +0000 (UTC) (envelope-from edhoprima@gmail.com) Received: from mail-ee0-x22c.google.com (mail-ee0-x22c.google.com [IPv6:2a00:1450:4013:c00::22c]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 01EB5286A for ; Wed, 2 Oct 2013 16:59:58 +0000 (UTC) Received: by mail-ee0-f44.google.com with SMTP id b47so548751eek.3 for ; Wed, 02 Oct 2013 09:59:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:from:date:message-id :subject:to:cc:content-type; bh=iREEWdLIOz9e3IUiP5TwQTmTAXWSXngT007fQxruMeo=; b=wCrP62f/oMQcTYroROlWwSfSsvnXl8Q8TGARC3b9GwpnMIzg4UOZfpARbqhR2mafSe 6NHJjCRYp0F1pooaAiNLEg/Mo6LL5OhPm/69mwRvktaVDMqVH42EBtnZu4Iu/VfWdhKw lun0/OeYqd8j1BwlH0aqS66doeiZJJ1Pxr5I5y1JIN5QbgZSHsQ9hE+9UqbG4ecTAUm7 REWsRfaVQsy6A8XxNayxrSpa9wM6SghWYeZ8974uAkjiDNU0J1H35dTUX3qQRRLn1IuD upVk5elObOJRqbD4DsE8LEz8VQskeZGPT3ruDb02+h/Fbwpj5tzkZXHuGdzf5Oq80Ya9 iT1g== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=myconan.net; s=myconan; h=mime-version:sender:in-reply-to:references:from:date:message-id :subject:to:cc:content-type; bh=iREEWdLIOz9e3IUiP5TwQTmTAXWSXngT007fQxruMeo=; b=b8Qjlof1nMzrqCN/xkxBf4l+Z+G8CH2mdhp9QVAwAnsbqZr1w6i49fKncBSHG9ak3A x/4EXriEmZGImwVehCp89qV4xWJBY9HGnCdOPVsJFvuWqxs860KiugW2vzna0QasUZBW /lWmCL9nDFvFkt/+g+K5FnRt4+PEV+KD2+yJs= X-Received: by 10.14.198.197 with SMTP id v45mr5133359een.52.1380733197228; Wed, 02 Oct 2013 09:59:57 -0700 (PDT) MIME-Version: 1.0 Sender: edhoprima@gmail.com Received: by 10.14.80.67 with HTTP; Wed, 2 Oct 2013 09:59:17 -0700 (PDT) In-Reply-To: <524B1EB6.2020003@delphij.net> References: <52457A32.2090105@fsn.hu> <77F6465C-4E76-4EE9-88B5-238FFB4E0161@sarenet.es> <20130930234401.GA68360@neutralgood.org> <524B1EB6.2020003@delphij.net> From: Edho Arief Date: Thu, 3 Oct 2013 01:59:17 +0900 X-Google-Sender-Auth: A3SATC0P4iRvFbgIv4j8_R_JcHI Message-ID: Subject: Re: zfs: the exponential file system from hell To: d@delphij.net Content-Type: text/plain; charset=UTF-8 Cc: FreeBSD List X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 02 Oct 2013 16:59:59 -0000 On Wed, Oct 2, 2013 at 4:12 AM, Xin Li wrote: > > I don't think 'zfs list' reports the "right" numbers either: there is no > notion of "available shared space between this, this and this file > systems". The underlying problem is that it's always hard to represent > mutli-dimensional value in a linear manner, to do it, we would need to > create something new. > Considering df output for UFS is never `size = used + avail` anyway, is there any problem with having df output for zfs to: - size: total size (zpool-wide, sans redundancy) - used: specific filesystem usage - avail: total available space ? -- O< ascii ribbon campaign - stop html mail - www.asciiribbon.org