From owner-freebsd-stable@FreeBSD.ORG Tue Dec 2 07:19:34 2014 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 25CA862B for ; Tue, 2 Dec 2014 07:19:34 +0000 (UTC) Received: from mail-oi0-x233.google.com (mail-oi0-x233.google.com [IPv6:2607:f8b0:4003:c06::233]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id E507AD0D for ; Tue, 2 Dec 2014 07:19:33 +0000 (UTC) Received: by mail-oi0-f51.google.com with SMTP id e131so8724326oig.24 for ; Mon, 01 Dec 2014 23:19:33 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=YADbRLCV5i+Y6PZgLSkeeRjHjBhuyzQiq+MENXMa8ME=; b=vUosPa5zi5M0sQQGLe+AdcTFjVmMJRFo6hTOBo0P2s+O/hYsJWbRI7F4gynKVBS1tG IH34yjDPgOyGJ4XUHsA5CVBljqE3lJnzMUgA8iuER5hEt157brg9jSH/vDgI0blAFq37 /zwy4EaBTrTGVoi6I96Ln8UJLF9ViioaHrWta/Nxs9szETHC165aeyRhmD5RTa9WPWfd kIt3/d2S8AeTgm5pvAUoWsNfvVOq0chd0tlmFn+UbcIn6+bQaPcjkMMWnFbTbgr9/CRf ZRiKMrXtJ/0UEFJ6oIOCSaEYcFY1sKR/ZaVS4TUzbdaJOuFZWPtK3x/ad45JkQyg70zI 47Mg== MIME-Version: 1.0 X-Received: by 10.60.139.66 with SMTP id qw2mr10492330oeb.11.1417504773196; Mon, 01 Dec 2014 23:19:33 -0800 (PST) Received: by 10.202.6.21 with HTTP; Mon, 1 Dec 2014 23:19:33 -0800 (PST) Received: by 10.202.6.21 with HTTP; Mon, 1 Dec 2014 23:19:33 -0800 (PST) In-Reply-To: References: Date: Mon, 1 Dec 2014 23:19:33 -0800 Message-ID: Subject: Re: ZFS available space difference between 10.0 and 10.1 From: Freddie Cash To: Mark Kane Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.18-1 Cc: FreeBSD Stable X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 02 Dec 2014 07:19:34 -0000 On Dec 1, 2014 10:19 PM, "Mark Kane" wrote: > > Hi all, > > I updated a machine running 10.0-STABLE from April to 10.1-RELEASE and am noticing a discrepancy in available space on a ZFS filesystem between versions. [snip] > Has anyone seen any similar issues in 10.1, or any ideas what could cause the discrepancy between versions? I'm happy to provide any further info/testing if needed. IIUC, ZFS now reserves 3% of pool space for administrative purposes (namely to be able to delete things when "pool is full"). So a pool imported on 10.0 will show more available space than a pool imported on 10.1. Cheers, Freddie