From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from nt.romanrm.net (nt.romanrm.net [185.213.174.59]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5D5142F29 for ; Wed, 3 Sep 2025 17:28:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.213.174.59 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756920495; cv=none; b=dTwAvNZifYXAENM+ZXZgt2wjhdgSYovb0EI7hoymFDOctILvpWXQegQfP8ipioaS/LrrAIderzenPySDxhICFFt0wdMPhDdDuhbiUPVgbolFrM/LfuF3lzM8heME2oYAB7VxP88jwJqZUI8rV20THRftaRYfVuPul0VlwMQgYjI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756920495; c=relaxed/simple; bh=QG9gsAznqp+Us7KIrD1kkQZEEM+GR8z2DvtATqiAKSs=; h=Date:From:To:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=rNusUQUyA5vH7EfnerkL5GqQ/FE3EfPF1dPRwIlwOxiBJQi0uajHmAdHkaQcXjLqggG9FR5ZaglXdleJiT7XLG96Ji15Euks7RJsJjQi3T+GQDEVYv2AZIOHzqOFtOFC0u6vdgeNc1HRz7par5nhpc8jYR/aMGIZvsSAdEtNmxk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=romanrm.net; spf=pass smtp.mailfrom=romanrm.net; arc=none smtp.client-ip=185.213.174.59 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=romanrm.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=romanrm.net Received: from nvm (umi.0.romanrm.net [IPv6:fd39:ade8:5a17:b555:7900:fcd:12a3:6181]) by nt.romanrm.net (Postfix) with SMTP id 0F8C940984 for ; Wed, 3 Sep 2025 17:28:08 +0000 (UTC) Date: Wed, 3 Sep 2025 22:28:08 +0500 From: Roman Mamedov To: linux-raid@vger.kernel.org Subject: Re: RAID 1 | Changing HDs Message-ID: <20250903222808.4047e5bc@nvm> In-Reply-To: References: <5c8e3075-e45a-410e-a23a-cbf0e86bdfa6@peter-speer.de> <20250903204521.44e91df1@nvm> X-Mailer: Claws Mail 3.11.1 (GTK+ 2.24.31; x86_64-pc-linux-gnu) Precedence: bulk X-Mailing-List: linux-raid@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Wed, 03 Sep 2025 18:58:10 +0200 Michael Reinelt wrote: > This minimizes the time the array would otherwise run degraded and thus reduces the risk of a second > failure during a rebuild. Good point for RAID5/6, but in this case growing RAID1 from 2 to 3 mirrors doesn't introduce any risk compared to what it was before the operation. -- With respect, Roman