Date: Thu, 16 Oct 2014 08:25:09 -0700 (PDT) From: Richard <riwi1967@gmail.com> To: zfs-discuss@zfsonlinux.org Cc: freebsd-fs@freebsd.org, zfs@lists.illumos.org, zfs-discuss@solaris-zfs.java.net, iloveosxzfs@gmail.com Subject: Re: Open-ZFS Bootcamp Message-ID: <c3827a90-b5b7-4e3f-bee8-b0b9c4a9f8b1@zfsonlinux.org> In-Reply-To: <543D6F65.4090205@kateley.com> References: <543D6F65.4090205@kateley.com>
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Hi, Thanks for this beginners course on ZFS. I ended up watching the whole session and learned some new things. Regards, Richard On Tuesday, October 14, 2014 8:46:01 PM UTC+2, Linda Kateley wrote: > > I just posted an Open-ZFS bootcamp. Thought people might be interested, if > you don't know zfs, give it a try. > > http://kateleyco.com/?page_id=783 > > Linda K > > From owner-freebsd-fs@FreeBSD.ORG Thu Oct 16 16:12:35 2014 Return-Path: <owner-freebsd-fs@FreeBSD.ORG> 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 E39B2B71; Thu, 16 Oct 2014 16:12:34 +0000 (UTC) Received: from anubis.delphij.net (anubis.delphij.net [64.62.153.212]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "anubis.delphij.net", Issuer "StartCom Class 1 Primary Intermediate Server CA" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id C20ABB92; Thu, 16 Oct 2014 16:12:34 +0000 (UTC) Received: from delphij-macbook.home.us.delphij.net (unknown [IPv6:2001:470:83bf:0:5da2:ad7b:ac1d:bf78]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by anubis.delphij.net (Postfix) with ESMTPSA id B7168238C9; Thu, 16 Oct 2014 09:12:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=delphij.net; s=anubis; t=1413475954; x=1413490354; bh=wxT7FrlsPuEfeqYoRYbXS3edRIvGEGcpjiHDqajHzWQ=; h=Date:From:Reply-To:To:CC:Subject:References:In-Reply-To; b=bSoLNYyLiClWytm3+wGgBMKRWqHtrTgLmihkZepw0OvmyOtdi7qOB7rPzIcO5Z17m MHWJHtD6Exguf+syOCRuyTJbFF+jAiy3Z66ekZ4QOb2SccRQ3y4MhRDIlXUESiAjIm IghvsDp5uIjdtDXTJuyP+eCjwIM+ieyzq7ggmHfE= Message-ID: <543FEE6F.5050007@delphij.net> Date: Thu, 16 Oct 2014 09:12:31 -0700 From: Xin Li <delphij@delphij.net> Reply-To: d@delphij.net Organization: The FreeBSD Project MIME-Version: 1.0 To: "James R. Van Artsdalen" <james-freebsd-current@jrv.org> Subject: Re: zfs recv hangs in kmem arena References: <54250AE9.6070609@jrv.org> <543FAB3C.4090503@jrv.org> In-Reply-To: <543FAB3C.4090503@jrv.org> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Cc: freebsd-fs@freebsd.org, current@freebsd.org X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Filesystems <freebsd-fs.freebsd.org> List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-fs>, <mailto:freebsd-fs-request@freebsd.org?subject=unsubscribe> List-Archive: <http://lists.freebsd.org/pipermail/freebsd-fs/>; List-Post: <mailto:freebsd-fs@freebsd.org> List-Help: <mailto:freebsd-fs-request@freebsd.org?subject=help> List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-fs>, <mailto:freebsd-fs-request@freebsd.org?subject=subscribe> X-List-Received-Date: Thu, 16 Oct 2014 16:12:35 -0000 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 On 10/16/14 4:25 AM, James R. Van Artsdalen wrote: > The zfs recv / kmem arena hang happens with -CURRENT as well as > 10-STABLE, on two different systems, with 16GB or 32GB of RAM, > from memstick or normal multi-user environments, > > Hangs usually seem to hapeen 1TB to 3TB in, but last night one run > hung after only 4.35MB. > > On 9/26/2014 1:42 AM, James R. Van Artsdalen wrote: >> FreeBSD BLACKIE.housenet.jrv 10.1-BETA2 FreeBSD 10.1-BETA2 #2 >> r272070M: Wed Sep 24 17:36:56 CDT 2014 >> james@BLACKIE.housenet.jrv:/usr/obj/usr/src/sys/GENERIC amd64 >> >> With current STABLE10 I am unable to replicate a ZFS pool using >> zfs send/recv without zfs hanging in state "kmem arena", within >> the first 4TB or so (of a 23TB Pool). >> >> The most recent attempt used this command line >> >> SUPERTEX:/root# zfs send -R BIGTEX/UNIX@syssnap | ssh BLACKIE zfs >> recv -duvF BIGTOX >> >> though local replications fail in kmem arena too. >> >> The two machines I've been attempting this on have 16BG and 32GB >> of RAM each and are otherwise idle. >> >> Any suggestions on how to get around, or investigate, "kmem >> arena"? >> >> # top last pid: 3272; load averages: 0.22, 0.22, 0.23 >> up 0+08:25:02 01:32:07 34 processes: 1 running, 33 sleeping >> CPU: 0.0% user, 0.0% nice, 0.1% system, 0.0% interrupt, 99.9% >> idle Mem: 21M Active, 82M Inact, 15G Wired, 28M Cache, 450M Free >> ARC: 12G Total, 24M MFU, 12G MRU, 23M Anon, 216M Header, 47M >> Other Swap: 16G Total, 16G Free >> >> PID USERNAME THR PRI NICE SIZE RES STATE C TIME >> WCPU COMMAND 1173 root 1 52 0 86476K 7780K select >> 0 124:33 0.00% sshd 1176 root 1 46 0 87276K 47732K >> kmem a 3 48:36 0.00% zfs 968 root 32 20 0 12344K >> 1888K rpcsvc 0 0:13 0.00% nfsd 1009 root 1 20 0 >> 25452K 2864K select 3 0:01 0.00% ntpd ... What does procstat -kk 1176 (or the PID of your 'zfs' process that stuck in that state) say? Cheers, -----BEGIN PGP SIGNATURE----- iQIcBAEBCgAGBQJUP+5vAAoJEJW2GBstM+ns0v4P/31s7geR2j22etrRnfReUxbb lbex0VkmLGm23TbTj2vpVce+ogBeA4zo6h4WzF/yYt2372MpWOfnEoVX2yOuuGku AFapewXS3UMXLzaRWrdTWng1KQlOyQykAHI2rvQLlYlQNTLA5AbUm6uzNXaKpD8s PbckREQ6wHnpZOiRcMN695QstjBNCal+XJHgvrwTfyp9vdFrPVD4UHnsN7MU6QSO XobxOqbuw4Tq95mgYJqrjk+xEYMgzUy2zkVp2QTCBXZn3T3yroI2RcgUZQWaw5SO xRegPa5jfJqcQJAdSxl8oVs9Sz8+5YDeksAnjCOxIQzLZBbNho+SOAzi+kjnT6W7 ijTc20z5eioQVPekdJ4MBweBsAeS1aGi8VWppuP+ZDLoirmxB0LaZyRv/W/HRQDD j4CoZswkndh+J+9Crsa9SUkfNGNvVVNjhJUGyIfTGFUsMbWTAWwa4SMj7Ad04aqW yhg+Ab4H3Yc14TahtX0jrhD3sTBer6ZoMFKE3tl8aStGXHVMyPkj0PHg5xjZEWL2 XGF86eoIgx03A9sIdbdHEZpyTMksfNatDXZk5XpPGF/sVd6txUoYP4Ch2wD8YRFM O5Ny2r6ash2rZYmlyjf19n4gvKebdGo8d8NbzOJ3oYue6OI/88cu0rv6xLV9hHSF fwgIbPo5uK4hIpEm0Dk4 =qY45 -----END PGP SIGNATURE-----
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