From owner-freebsd-questions@freebsd.org Fri Jan 25 14:43:55 2019 Return-Path: Delivered-To: freebsd-questions@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 6880414B7C60 for ; Fri, 25 Jan 2019 14:43:55 +0000 (UTC) (envelope-from christian.baer@uni-dortmund.de) Received: from dd13304.kasserver.com (dd13304.kasserver.com [85.13.135.53]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 638118699A for ; Fri, 25 Jan 2019 14:43:54 +0000 (UTC) (envelope-from christian.baer@uni-dortmund.de) Received: from [192.168.100.8] (b9168eb6.cgn.dg-w.de [185.22.142.182]) by dd13304.kasserver.com (Postfix) with ESMTPSA id 353445E2033E for ; Fri, 25 Jan 2019 15:43:52 +0100 (CET) To: freebsd-questions@freebsd.org From: Christian Baer Subject: enlarging a ZFS file system Message-ID: <85fc7b92-3e40-33e2-b079-91d04944d13a@informatik.uni-dortmund.de> Date: Fri, 25 Jan 2019 15:43:54 +0100 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 638118699A X-Spamd-Bar: + Authentication-Results: mx1.freebsd.org; spf=fail (mx1.freebsd.org: domain of christian.baer@uni-dortmund.de does not designate 85.13.135.53 as permitted sender) smtp.mailfrom=christian.baer@uni-dortmund.de X-Spamd-Result: default: False [1.90 / 15.00]; ARC_NA(0.00)[]; R_SPF_FAIL(1.00)[-all]; RCVD_VIA_SMTP_AUTH(0.00)[]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_HAM_LONG(-0.53)[-0.526,0]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-questions@freebsd.org]; TO_DN_NONE(0.00)[]; NEURAL_SPAM_MEDIUM(0.83)[0.826,0]; RCPT_COUNT_ONE(0.00)[1]; DMARC_NA(0.00)[uni-dortmund.de]; NEURAL_SPAM_SHORT(0.78)[0.784,0]; MX_GOOD(-0.01)[cached: esa3.itmc.tu-dortmund.de]; IP_SCORE(0.03)[asn: 34788(0.16), country: DE(-0.01)]; RCVD_IN_DNSWL_LOW(-0.10)[53.135.13.85.list.dnswl.org : 127.0.5.1]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:34788, ipnet:85.13.135.0/24, country:DE]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[]; FROM_EQ_ENVFROM(0.00)[] X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 25 Jan 2019 14:43:55 -0000 Hey again everyone! I have a system with 5 drives running a RAIDZ2. The file system is getting a little cramped, so I would like to extend it. Ideally I'd like to add 2 or three (identical) drives to the pool, let the system work a little and then have a result as if I'd created the whole thing from the start with 7 or 8 drives. Just to be clear: The result should be a RAIDZ2 with 7 or 8 drives (depending on how many I add). A couple of years back, I read up on if this were possible and the only way to enlarge a RAIDZ at the time was to replace *all* the existing drives piece by piece with bigger ones and let the RAID heal drive by drive. During my research I did stumble on a thread where developers of ZFS were discussing that what I would like to do was actually a good idea and a relatively widely requested feature. I didn't participate in the discussion and for some reason cannot find it anymore. I must admit that I didn't save the URL at the time. :-( Has there been any development in this direction? Can what I'd like to do be done with FreeBSD today? The drives in question are used for archive purposes and don't really see much action, so I am not worried that they will die it the data on them gets copied around a fair bit. Y'all have a nice weekend! ;-) Regards, Chris