From owner-freebsd-fs@FreeBSD.ORG Tue Oct 14 01:24:26 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 TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 0BD7F8C0; Tue, 14 Oct 2014 01:24:26 +0000 (UTC) Received: from mail.ijs.si (mail.ijs.si [IPv6:2001:1470:ff80::25]) by mx1.freebsd.org (Postfix) with ESMTP id AAA4FE51; Tue, 14 Oct 2014 01:24:25 +0000 (UTC) Received: from amavis-proxy-ori.ijs.si (localhost [IPv6:::1]) by mail.ijs.si (Postfix) with ESMTP id 3jGzZ00r7gz1Pj; Tue, 14 Oct 2014 03:24:24 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ijs.si; h= content-transfer-encoding:content-type:content-type:in-reply-to :references:subject:subject:mime-version:user-agent:organization :from:from:date:date:message-id:received:received:received; s= jakla4; t=1413249860; x=1415841861; bh=E00J03d8mnC6AmiSMuV81G4q/ 4Li+rNK8OluLpXLO8w=; b=NYM7VzCHHu12F0S1O94X/tU+PB5tZoNSVlbkupIdH FfNZBxWgqt0NqzpoMsH1Ps7UXCznZTrFfVDzkO+stidS9kKnHEdeImdjbVOqCpFE CLU2PXdXGtMXyGyqMOVORL9OYeLBwwjC5Kz6Pt/uW25zis+SOx08J2ivWEB+DW9c Po= X-Virus-Scanned: amavisd-new at ijs.si Received: from mail.ijs.si ([IPv6:::1]) by amavis-proxy-ori.ijs.si (mail.ijs.si [IPv6:::1]) (amavisd-new, port 10012) with ESMTP id 95NqP2gMnm1A; Tue, 14 Oct 2014 03:24:20 +0200 (CEST) Received: from mildred.ijs.si (mailbox.ijs.si [IPv6:2001:1470:ff80::143:1]) by mail.ijs.si (Postfix) with ESMTP; Tue, 14 Oct 2014 03:24:20 +0200 (CEST) Received: from sleepy.ijs.si (msleepy-1-pt.tunnel.tserv27.prg1.ipv6.he.net [IPv6:2001:470:6e:18e::2]) (using TLSv1 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by mildred.ijs.si (Postfix) with ESMTPSA id 3jGzYv6YGTzqr; Tue, 14 Oct 2014 03:24:19 +0200 (CEST) Message-ID: <543C7B43.5020301@ijs.si> Date: Tue, 14 Oct 2014 03:24:19 +0200 From: Mark Martinec Organization: J. Stefan Institute User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:31.0) Gecko/20100101 Thunderbird/31.1.2 MIME-Version: 1.0 To: freebsd-stable@freebsd.org, freebsd-fs@freebsd.org Subject: Re: zpool import hangs when out of space - Was: zfs pool import hangs on [tx->tx_sync_done_cv] References: <54372173.1010100@ijs.si> <644FA8299BF848E599B82D2C2C298EA7@multiplay.co.uk> <54372EBA.1000908@ijs.si> <543731F3.8090701@ijs.si> <543AE740.7000808@ijs.si> <6E01BBEDA9984CCDA14F290D26A8E14D@multiplay.co.uk> <14ADE02801754E028D9A0EAB4A16527E@multiplay.co.uk> <543C3C47.4010208@ijs.si> In-Reply-To: Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 14 Oct 2014 01:24:26 -0000 On 10/14/2014 03:15, K. Macy wrote: > What is using the extra space in the pool? Is there an unmounted > dataset or snapshot? Do you know how to easily tell? Unlike txg and > zio processing I don't have the luxury of having just read that part > of the codebase. Most likely the snapshots (regular periodic snapshots). Changes after upgrading an OS can maybe take an additional 50% of space (just guessing). Btw, ashift=12. Still can't see how that would amount to 4 GiB, but it's possible. Mark