From owner-freebsd-fs@freebsd.org Mon May 16 23:14:25 2016 Return-Path: Delivered-To: freebsd-fs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 86A07B3E393 for ; Mon, 16 May 2016 23:14:25 +0000 (UTC) (envelope-from rainer@ultra-secure.de) Received: from connect.ultra-secure.de (connect.ultra-secure.de [88.198.71.201]) by mx1.freebsd.org (Postfix) with ESMTP id E65151647 for ; Mon, 16 May 2016 23:14:24 +0000 (UTC) (envelope-from rainer@ultra-secure.de) Received: (Haraka outbound); Tue, 17 May 2016 01:14:23 +0200 Authentication-Results: connect.ultra-secure.de; iprev=pass; auth=pass (plain); spf=none smtp.mailfrom=ultra-secure.de Received-SPF: None (connect.ultra-secure.de: domain of ultra-secure.de does not designate 217.71.83.52 as permitted sender) receiver=connect.ultra-secure.de; identity=mailfrom; client-ip=217.71.83.52; helo=[192.168.1.200]; envelope-from= Received: from [192.168.1.200] (217-071-083-052.ip-tech.ch [217.71.83.52]) by connect.ultra-secure.de (Haraka/2.6.2-toaster) with ESMTPSA id C3F38CD4-6758-439C-B896-0AEB07043CA5.1 envelope-from (authenticated bits=0) (version=TLSv1/SSLv3 cipher=AES256-SHA verify=NO); Tue, 17 May 2016 01:14:21 +0200 Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 9.3 \(3124\)) Subject: Re: zfs receive stalls whole system From: Rainer Duffner In-Reply-To: <0C2233A9-C64A-4773-ABA5-C0BCA0D037F0@ultra-secure.de> Date: Tue, 17 May 2016 01:14:19 +0200 Content-Transfer-Encoding: quoted-printable Message-Id: <1513A05F-1DA7-4765-A67C-360555C97CF0@ultra-secure.de> References: <0C2233A9-C64A-4773-ABA5-C0BCA0D037F0@ultra-secure.de> To: FreeBSD Filesystems X-Mailer: Apple Mail (2.3124) X-Haraka-GeoIP: EU, CH, 451km X-Haraka-ASN: 24951 X-Haraka-GeoIP-Received: X-Haraka-ASN: 24951 217.71.80.0/20 X-Haraka-ASN-CYMRU: asn=24951 net=217.71.80.0/20 country=CH assignor=ripencc date=2003-08-07 X-Haraka-FCrDNS: 217-071-083-052.ip-tech.ch X-Haraka-p0f: os="Mac OS X " link_type="DSL" distance=13 total_conn=3 shared_ip=N X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on spamassassin X-Spam-Level: X-Spam-Status: No, score=-2.9 required=5.0 tests=ALL_TRUSTED,BAYES_00 autolearn=ham autolearn_force=no version=3.4.1 X-Haraka-Karma: score: 6, good: 169, bad: 0, connections: 329, history: 169, asn_score: 103, asn_connections: 114, asn_good: 103, asn_bad: 0, pass:all_good, asn, asn_all_good, relaying X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 16 May 2016 23:14:25 -0000 >=20 > Would a ZIL help in this case? > I always thought that NFS was the only thing that did SYNC writes=E2=80=A6= >=20 I mean an SSD-based SLOG device, for the record. Because I=E2=80=99ve already maxed out my three PCIe slots I have with = the single CPU, my only option would be a DC S3710, it seems. Only problems is I have to mount it into a HP disk-tray, somehow, which = I=E2=80=99ve never tried. Also, it would sit on the same SAS-backplane as the other disks, which = may or may not be a good thing...=