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 5B895C61DA4 for ; Wed, 22 Feb 2023 08:31:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231330AbjBVIbR (ORCPT ); Wed, 22 Feb 2023 03:31:17 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48008 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230374AbjBVIbP (ORCPT ); Wed, 22 Feb 2023 03:31:15 -0500 Received: from ciao.gmane.io (ciao.gmane.io [116.202.254.214]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F379235249 for ; Wed, 22 Feb 2023 00:31:13 -0800 (PST) Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1pUkWs-00039I-Og for linux-btrfs@vger.kernel.org; Wed, 22 Feb 2023 09:31:10 +0100 X-Injected-Via-Gmane: http://gmane.org/ Mail-Followup-To: linux-btrfs@vger.kernel.org To: linux-btrfs@vger.kernel.org From: Torsten Bronger Subject: Re: Why is converting from RAID1 to single in Btrfs an I/O-intensive operation? Date: Wed, 22 Feb 2023 09:30:38 +0100 Organization: Phoenix Foundation Message-ID: <87ttze2jbl.fsf@physik.rwth-aachen.de> References: <87wn4fiec8.fsf@physik.rwth-aachen.de> <04ddea4e-4823-00dc-c32c-700d9f7e1fef@libero.it> <87a61bi4pj.fsf@physik.rwth-aachen.de> <8531c30e-885b-1d8d-314b-5167ed0874ac@libero.it> <87k00dmq83.fsf@physik.rwth-aachen.de> <0282b6d0-b131-3b3a-084d-8c8de2f522a5@tnonline.net> <87r0ujbi6h.fsf@physik.rwth-aachen.de> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit User-Agent: Gnus/5.13 (Gnus v5.13) Cancel-Lock: sha1:OV2BpDHnP/hnKAI8NISLgYoKo0Y= X-PGP-Fingerprint: C5C8 D6E2 79D2 EFE9 8C0F 6D77 D5E3 CEFC 9F51 6B77 X-Home-Page: http://www.wikipedia.org/wiki/User:Bronger X-Face: +wpw"|jN2Fde|7_lKBa0\7!_6suIE_m! x)'S9ytBu8tkt'k779jbzQ4o|p+@H_DCrIdnKG]E*w X-Binford: 6100 (more power) X-Accept-Language: de, en Mail-Copies-To: never Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org Hallöchen! me@jse.io writes: > [...] > > If you want to go back to single on a 2 device RAID1, and avoid > the wear, especially if you plan to return to RAID1 at a later > date, why not just use it degraded? Now that I know that the mount-degraded-rw-only-once thing has long been fixed, I will do that of course. Bye, Torsten. -- Torsten Bronger