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 us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3A69BC77B7A for ; Fri, 19 May 2023 04:51:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1684471911; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:list-id:list-help: list-unsubscribe:list-subscribe:list-post; bh=zZY04BvoSk3wyq9ha2Q+SesZfgL1dhQOYHPPGh0ksQY=; b=GyEYQG83Thu1qbzGx7YzgPoL/8qacd304aGjYvyn4pcviZWqTtarHKH21l8cBQtWBZBfjG JA46hkl+59f9NMVstT0GARPN1FgEugZm7dKCRygMB9IXzPJJiS0iHSvUxPYd6TPVGirtOk uHf5XXNYMgw/GQeY0Vc8a0Q2xMBdeS0= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-283-xVVwi4HxNXeqZYo5fjjoUQ-1; Fri, 19 May 2023 00:51:49 -0400 X-MC-Unique: xVVwi4HxNXeqZYo5fjjoUQ-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id E27C91854AED; Fri, 19 May 2023 04:51:47 +0000 (UTC) Received: from mm-prod-listman-01.mail-001.prod.us-east-1.aws.redhat.com (unknown [10.30.29.100]) by smtp.corp.redhat.com (Postfix) with ESMTP id C982563F5F; Fri, 19 May 2023 04:51:46 +0000 (UTC) Received: from mm-prod-listman-01.mail-001.prod.us-east-1.aws.redhat.com (localhost [IPv6:::1]) by mm-prod-listman-01.mail-001.prod.us-east-1.aws.redhat.com (Postfix) with ESMTP id 7241819465B2; Fri, 19 May 2023 04:51:46 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) by mm-prod-listman-01.mail-001.prod.us-east-1.aws.redhat.com (Postfix) with ESMTP id EAC9019465A4 for ; Fri, 19 May 2023 04:51:43 +0000 (UTC) Received: by smtp.corp.redhat.com (Postfix) id B19F22166B32; Fri, 19 May 2023 04:51:43 +0000 (UTC) Received: from mimecast-mx02.redhat.com (mimecast06.extmail.prod.ext.rdu2.redhat.com [10.11.55.22]) by smtp.corp.redhat.com (Postfix) with ESMTPS id A8C8E2166B31 for ; Fri, 19 May 2023 04:51:43 +0000 (UTC) Received: from us-smtp-inbound-1.mimecast.com (us-smtp-1.mimecast.com [205.139.110.61]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 7AC0A185A7A4 for ; Fri, 19 May 2023 04:51:43 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-274-C3vgk8cENTi-wAgH0G1WDA-1; Fri, 19 May 2023 00:51:38 -0400 X-MC-Unique: C3vgk8cENTi-wAgH0G1WDA-1 Received: from hch by bombadil.infradead.org with local (Exim 4.96 #2 (Red Hat Linux)) id 1pzrQM-00F1NI-14; Fri, 19 May 2023 04:09:02 +0000 Date: Thu, 18 May 2023 21:09:02 -0700 From: Christoph Hellwig To: Sarthak Kukreti Message-ID: References: <20230518223326.18744-1-sarthakkukreti@chromium.org> MIME-Version: 1.0 In-Reply-To: <20230518223326.18744-1-sarthakkukreti@chromium.org> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-Mimecast-Impersonation-Protect: Policy=CLT - Impersonation Protection Definition; Similar Internal Domain=false; Similar Monitored External Domain=false; Custom External Domain=false; Mimecast External Domain=false; Newly Observed Domain=false; Internal User Name=false; Custom Display Name List=false; Reply-to Address Mismatch=false; Targeted Threat Dictionary=false; Mimecast Threat Dictionary=false; Custom Threat Dictionary=false X-Scanned-By: MIMEDefang 3.1 on 10.11.54.6 Subject: Re: [dm-devel] [PATCH v7 0/5] Introduce provisioning primitives X-BeenThere: dm-devel@redhat.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: device-mapper development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jens Axboe , Christoph Hellwig , Theodore Ts'o , "Michael S. Tsirkin" , "Darrick J. Wong" , Jason Wang , Bart Van Assche , Mike Snitzer , linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, dm-devel@redhat.com, Andreas Dilger , Stefan Hajnoczi , linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, Brian Foster , Alasdair Kergon Errors-To: dm-devel-bounces@redhat.com Sender: "dm-devel" X-Scanned-By: MIMEDefang 3.1 on 10.11.54.5 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: infradead.org Content-Disposition: inline Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit FYI, I really don't think this primitive is a good idea. In the concept of non-overwritable storage (NAND, SMR drives) the entire concept of a one-shoot 'provisioning' that will guarantee later writes are always possible is simply bogus. -- dm-devel mailing list dm-devel@redhat.com https://listman.redhat.com/mailman/listinfo/dm-devel