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 D07ABC00144 for ; Thu, 4 Aug 2022 07:07:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1659596857; h=from:from:sender:sender:reply-to: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=woBusx534OOM3SUhWTXfln31/WkRA4rwasyF/c9zo9o=; b=CWEct3xTXpFTOE+qdB510281uskdngG9o1+C8qqnk0ME/r4GT8lxco77XCiI2p45xxwlom IpXSLPiGCu6R1Ts/s7RXlCmMaE1ZLRZ941w6tCFiJhd5t0G8q2ZD42cqHd481hz4HVwhcf A9UrzBmi1yz3KuVRM/fFGkCIMtBahkU= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-85-BdrZQXqINu65DjM6SsHgAg-1; Thu, 04 Aug 2022 03:07:34 -0400 X-MC-Unique: BdrZQXqINu65DjM6SsHgAg-1 Received: from smtp.corp.redhat.com (int-mx10.intmail.prod.int.rdu2.redhat.com [10.11.54.10]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id E52613C10698; Thu, 4 Aug 2022 07:07:31 +0000 (UTC) Received: from mm-prod-listman-01.mail-001.prod.us-east-1.aws.redhat.com (mm-prod-listman-01.mail-001.prod.us-east-1.aws.redhat.com [10.30.29.100]) by smtp.corp.redhat.com (Postfix) with ESMTP id 96176403168; Thu, 4 Aug 2022 07:07:31 +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 5716A1946A56; Thu, 4 Aug 2022 07:07:31 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) by mm-prod-listman-01.mail-001.prod.us-east-1.aws.redhat.com (Postfix) with ESMTP id 70DFF1946A4E for ; Wed, 3 Aug 2022 21:14:34 +0000 (UTC) Received: by smtp.corp.redhat.com (Postfix) id 55FA4492CA2; Wed, 3 Aug 2022 21:14:34 +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 49804492C3B for ; Wed, 3 Aug 2022 21:14:34 +0000 (UTC) Received: from us-smtp-1.mimecast.com (us-smtp-delivery-1.mimecast.com [205.139.110.120]) (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 31FBB185A7B2 for ; Wed, 3 Aug 2022 21:14:34 +0000 (UTC) Received: from mx1.helsinki.tools (mx1.helsinki.tools [116.202.14.156]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-362-zUCM5M6bMAC14tNEqFL-cQ-1; Wed, 03 Aug 2022 17:14:31 -0400 X-MC-Unique: zUCM5M6bMAC14tNEqFL-cQ-1 Date: Wed, 3 Aug 2022 23:14:26 +0200 From: ajs124 To: David Teigland Message-ID: <20220803231426.4bc948e3@desk> In-Reply-To: <20220803151554.GA28867@redhat.com> References: <20220802162753.6c214fe5@desk> <20220803151554.GA28867@redhat.com> MIME-Version: 1.0 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 2.85 on 10.11.54.9 X-Mailman-Approved-At: Thu, 04 Aug 2022 07:07:27 +0000 Subject: Re: [linux-lvm] raidintegrity on non top level LVs X-BeenThere: linux-lvm@redhat.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: LVM general discussion and development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: LVM general discussion and development Cc: LVM general discussion and development Errors-To: linux-lvm-bounces@redhat.com Sender: "linux-lvm" X-Scanned-By: MIMEDefang 2.85 on 10.11.54.10 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit On Wed, 3 Aug 2022 10:15:54 -0500 David Teigland wrote: > On Tue, Aug 02, 2022 at 04:27:53PM +0200, ajs124 wrote: > > Hi, > > > > I've been wondering. Why does lvconvert not allow me to add raid > > integrity to LVs that are not top level? > > It only says "Integrity can only be added to top level raid LV." > > > > Skimming the commit that added this [1] did not provide me with > > an answer, so I thought I'd ask here. > > Hi, good question, I think it was just an effort to limit the scope of the > feature initially. Over time we can possibly expand the scope after > seeing how things were working technically, and the experience of users. > I'm curious to know what configuration you're trying, and if you have any > experience using raid+integrity otherwise. > > Dave Hi, we're using a thin pool on top of two raid lvs for thinpool metadata and data and I tried adding integrity to that. We don't have much experience with raid+integrity, just a handful of systems, which have been running fine. They're not particularly performance critical and we don't have much data on how exactly they behave. The reason why I started looking into this again is because I observed some mismatched sectors on a host, where all drives seem fine and I'd like to have integrity to maybe figure out if any of the drives are actually faulty. ajs124 _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://listman.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/