From owner-freebsd-stable@freebsd.org Sat Jan 19 15:07:38 2019 Return-Path: Delivered-To: freebsd-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id F11391482328 for ; Sat, 19 Jan 2019 15:07:37 +0000 (UTC) (envelope-from gausus@gausus.net) Received: from poczta.dzikakuna.net (poczta.dzikakuna.net [91.192.224.135]) by mx1.freebsd.org (Postfix) with ESMTP id 8D67D85517 for ; Sat, 19 Jan 2019 15:07:33 +0000 (UTC) (envelope-from gausus@gausus.net) Received: from localhost (localhost [127.0.0.1]) by poczta.dzikakuna.net (Postfix) with ESMTP id 89BDB43A0A9 for ; Sat, 19 Jan 2019 16:07:31 +0100 (CET) Received: from poczta.dzikakuna.net ([127.0.0.1]) by localhost (poczta.dzikakuna.net [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id QEyxOogB4rkN for ; Sat, 19 Jan 2019 16:07:31 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by poczta.dzikakuna.net (Postfix) with ESMTP id 2996843A0AA for ; Sat, 19 Jan 2019 16:07:31 +0100 (CET) X-Virus-Scanned: amavisd-new at metroplex.pl Received: from poczta.dzikakuna.net ([127.0.0.1]) by localhost (poczta.dzikakuna.net [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id O7_xjvvWRgtb for ; Sat, 19 Jan 2019 16:07:31 +0100 (CET) Received: from poczta.dzikakuna.net (poczta.dzikakuna.net [91.192.224.135]) by poczta.dzikakuna.net (Postfix) with ESMTP id 0E7E643A0A9 for ; Sat, 19 Jan 2019 16:07:31 +0100 (CET) Date: Sat, 19 Jan 2019 16:07:30 +0100 (CET) From: Maciej Jan Broniarz To: freebsd-stable Message-ID: <2021985079.63423.1547910450967.JavaMail.zimbra@gausus.net> Subject: zfs on hardware raid array MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Mailer: Zimbra 8.0.9_GA_6191 (ZimbraWebClient - GC71 (Mac)/8.0.9_GA_6191) Thread-Topic: zfs on hardware raid array Thread-Index: Kfxl74oaE1wjgLf/iBSvPvHAgU8rtA== X-Rspamd-Queue-Id: 8D67D85517 X-Spamd-Bar: ++ Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [2.74 / 15.00]; ARC_NA(0.00)[]; RCVD_COUNT_FIVE(0.00)[6]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_SPAM_SHORT(0.63)[0.628,0]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-stable@freebsd.org]; DMARC_NA(0.00)[gausus.net]; AUTH_NA(1.00)[]; RCPT_COUNT_ONE(0.00)[1]; NEURAL_SPAM_MEDIUM(0.43)[0.427,0]; IP_SCORE(0.01)[country: PL(0.03)]; TO_DN_ALL(0.00)[]; MX_GOOD(-0.01)[cached: poczta.dzikakuna.net]; NEURAL_SPAM_LONG(0.69)[0.689,0]; R_SPF_NA(0.00)[]; RCVD_NO_TLS_LAST(0.10)[]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:42576, ipnet:91.192.224.0/24, country:PL]; MID_RHS_MATCH_FROM(0.00)[] X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 19 Jan 2019 15:07:38 -0000 Hi, I want to use ZFS on a hardware-raid array. I have no option of making it JBOD. I know it is best to use ZFS on JBOD, but that possible in that particular case. My question is - how bad of an idea is it. I have read very different opinions on that subject, but none of them seems conclusive. Any comments and especially case studies are most welcome. All best, mjb