From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 64D96C433F5 for ; Wed, 8 Dec 2021 12:55:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232201AbhLHM6y (ORCPT ); Wed, 8 Dec 2021 07:58:54 -0500 Received: from campbell-lange.net ([178.79.140.51]:48208 "EHLO campbell-lange.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229743AbhLHM6y (ORCPT ); Wed, 8 Dec 2021 07:58:54 -0500 X-Greylist: delayed 907 seconds by postgrey-1.27 at vger.kernel.org; Wed, 08 Dec 2021 07:58:54 EST DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=campbell-lange.net; s=it; h=Content-Type:MIME-Version:Message-ID:Subject:To :From:Date:Sender:Reply-To:Cc:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:In-Reply-To:References:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=qK5LPo3SLXToHhlSTLNOnsRZrtU3JxpjtD42dgtFIlo=; b=JQOyYv3b9XEJonzyGxjRV9U4ij R1URW3TbI7WbHf5dhQmIlmzV63meCnXLFOLJtUBl34c/QukbwQrktXBkhfwmkrVNKYk2eaR884Ibm d5T/fJItWmAeAZ40PcrPYgGL1Na5UyleG8kC0l/ZKmYHApGs9zbuYv/TVNbdrBEFG/F0=; Received: from [217.138.52.158] (helo=rory-t470s) by campbell-lange.net with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1muwF4-0002Ag-Gx for linux-btrfs@vger.kernel.org; Wed, 08 Dec 2021 12:40:14 +0000 Received: from rory by rory-t470s with local (Exim 4.94.2) (envelope-from ) id 1muwF4-000Ipn-3n for linux-btrfs@vger.kernel.org; Wed, 08 Dec 2021 12:40:14 +0000 Date: Wed, 8 Dec 2021 12:40:14 +0000 From: Rory Campbell-Lange To: linux-btrfs@vger.kernel.org Subject: trouble replacing second disk from pair Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org We're trying to upgrade the disks in a btrfs pair, and I have successfully replaced one of them using btrfs replace. I presently have Label: 'btrfs-bkp' uuid: da90602a-b98e-4f0b-959a-ce431ac0cdfa Total devices 2 FS bytes used 700.29GiB devid 2 size 2.73TiB used 1.73TiB path /dev/mapper/cdisk4 devid 3 size 2.73TiB used 1.75TiB path /dev/mapper/cdisk2 I'd like to get rid of cdisk2 and replace it with a new disk. However I'm unable to mount cdisk4 (the new disk) in degraded mode to allow me to similarly replace cdisk2 as I previously did for cdisk3. Is this because some of the data in only on cdisk2? If so I'd be grateful to know how to ensure the two disks have the same data and to allow cdisk2 to be replaced. Regards Rory # btrfs filesystem usage /bkp Overall: Device size: 5.46TiB Device allocated: 3.49TiB Device unallocated: 1.97TiB Device missing: 0.00B Used: 1.37TiB Free (estimated): 2.04TiB (min: 2.04TiB) Data ratio: 2.00 Metadata ratio: 1.91 Global reserve: 512.00MiB (used: 0.00B) Data,single: Size:1.00GiB, Used:1.00MiB /dev/mapper/cdisk2 1.00GiB Data,RAID1: Size:1.73TiB, Used:691.24GiB /dev/mapper/cdisk2 1.73TiB /dev/mapper/cdisk4 1.73TiB Data,DUP: Size:8.00GiB, Used:7.30GiB /dev/mapper/cdisk2 16.00GiB Metadata,single: Size:1.00GiB, Used:0.00B /dev/mapper/cdisk2 1.00GiB Metadata,RAID1: Size:9.00GiB, Used:1.75GiB /dev/mapper/cdisk2 9.00GiB /dev/mapper/cdisk4 9.00GiB Metadata,DUP: Size:1.00GiB, Used:10.03MiB /dev/mapper/cdisk2 2.00GiB System,single: Size:32.00MiB, Used:224.00KiB /dev/mapper/cdisk2 32.00MiB System,RAID1: Size:32.00MiB, Used:192.00KiB /dev/mapper/cdisk2 32.00MiB /dev/mapper/cdisk4 32.00MiB System,DUP: Size:32.00MiB, Used:0.00B /dev/mapper/cdisk2 64.00MiB Unallocated: /dev/mapper/cdisk2 998.39GiB /dev/mapper/cdisk4 1018.49GiB