From owner-freebsd-stable@freebsd.org Sun Apr 12 15:43:30 2020 Return-Path: Delivered-To: freebsd-stable@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 1BEE42C105B for ; Sun, 12 Apr 2020 15:43:30 +0000 (UTC) (envelope-from slw@zxy.spb.ru) Received: from zxy.spb.ru (zxy.spb.ru [195.70.199.98]) (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 490bcx1SVrz4GnJ for ; Sun, 12 Apr 2020 15:43:28 +0000 (UTC) (envelope-from slw@zxy.spb.ru) Received: from slw by zxy.spb.ru with local (Exim 4.86 (FreeBSD)) (envelope-from ) id 1jNelT-00098m-Eg; Sun, 12 Apr 2020 18:43:19 +0300 Date: Sun, 12 Apr 2020 18:43:19 +0300 From: Slawa Olhovchenkov To: Stefan Bethke Cc: freebsd-stable Subject: Re: make kernel ignore broken SATA disk Message-ID: <20200412154319.GO8028@zxy.spb.ru> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.24 (2015-08-30) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: slw@zxy.spb.ru X-SA-Exim-Scanned: No (on zxy.spb.ru); SAEximRunCond expanded to false X-Rspamd-Queue-Id: 490bcx1SVrz4GnJ X-Spamd-Bar: / Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=none (mx1.freebsd.org: domain of slw@zxy.spb.ru has no SPF policy when checking 195.70.199.98) smtp.mailfrom=slw@zxy.spb.ru X-Spamd-Result: default: False [0.44 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-0.23)[-0.229,0]; FROM_HAS_DN(0.00)[]; NEURAL_HAM_LONG(-0.31)[-0.313,0]; MIME_GOOD(-0.10)[text/plain]; RCVD_TLS_LAST(0.00)[]; DMARC_NA(0.00)[zxy.spb.ru]; AUTH_NA(1.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; TO_DN_ALL(0.00)[]; RCPT_COUNT_TWO(0.00)[2]; R_SPF_NA(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:5495, ipnet:195.70.192.0/19, country:RU]; MID_RHS_MATCH_FROM(0.00)[]; IP_SCORE(0.08)[asn: 5495(0.38), country: RU(0.01)]; RCVD_COUNT_TWO(0.00)[2] 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: Sun, 12 Apr 2020 15:43:30 -0000 On Sun, Apr 12, 2020 at 04:37:06PM +0200, Stefan Bethke wrote: > I have a server I don't have physical access to right now, which has a broken SATA disk that produces mostly errors (but not entirely). > > The disk has two partitions that are part of a zpool each. I can't bring the system up with this disk being online, because ZFS is trying its darndest to use it. > > I already renamed the GPT partitions in the hope that ZFS would not find them anymore, but it does. > > I can't gpart destroy -f ada1 because "device busy". > > Is there a way, ideally in the loader, to tell the kernel to ignore ada1 and/or ahcich5? Or can I force ZFS some other way to ignore the disk? I do have a spare disk I can use to replace the failed one, but I can't get the machine into a state where I could even issue the zpool replace command. `zpool offline pool device` if you have enoght redundancy?