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 X-Spam-Level: X-Spam-Status: No, score=-7.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9A2D0C433FE for ; Wed, 9 Dec 2020 20:46:48 +0000 (UTC) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [63.128.21.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 15FDA23C85 for ; Wed, 9 Dec 2020 20:46:47 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 15FDA23C85 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=tempfail smtp.mailfrom=linux-lvm-bounces@redhat.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1607546806; 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=WYRVK4aT6ERMJOoFQrk2HTjjI7FIG1X9Oq7vEA0gfI4=; b=aLcVglcv/cFQN3ssvjE7lFhDEXZ1k993pvUNZN1ubgwgNrzYIYpvcWzJdWASFMvhDQZ+ju iEyUdr8AthaAqFjw2c9rXh+DorMNh2F68aOQ0dLVdOpaNdfLX7hyWUYg3D5ksK42rIZVDI L13d7S6PHgIgk2CsO3BDYJo2JcoLIW8= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-98-IGLMcBUFNr6ddfpR5xvzSw-1; Wed, 09 Dec 2020 15:46:43 -0500 X-MC-Unique: IGLMcBUFNr6ddfpR5xvzSw-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id D50BD1012E6C; Wed, 9 Dec 2020 20:46:07 +0000 (UTC) Received: from colo-mx.corp.redhat.com (colo-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.21]) by smtp.corp.redhat.com (Postfix) with ESMTPS id A10195D9CA; Wed, 9 Dec 2020 20:46:05 +0000 (UTC) Received: from lists01.pubmisc.prod.ext.phx2.redhat.com (lists01.pubmisc.prod.ext.phx2.redhat.com [10.5.19.33]) by colo-mx.corp.redhat.com (Postfix) with ESMTP id D23404A7C6; Wed, 9 Dec 2020 20:45:59 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id 0B9Kjv6V026437 for ; Wed, 9 Dec 2020 15:45:57 -0500 Received: by smtp.corp.redhat.com (Postfix) id 7463F1E5; Wed, 9 Dec 2020 20:45:57 +0000 (UTC) Received: from redhat.com (null.msp.redhat.com [10.15.80.136]) by smtp.corp.redhat.com (Postfix) with ESMTPS id BC9EA6F439; Wed, 9 Dec 2020 20:45:26 +0000 (UTC) Date: Wed, 9 Dec 2020 14:45:25 -0600 From: David Teigland To: Dennis Schridde Message-ID: <20201209204525.GD15208@redhat.com> References: <4384449.LvFx2qVVIh@monk> <5900102.lOV4Wx5bFT@monk> <20201209193051.GC15208@redhat.com> <11903480.O9o76ZdvQC@monk> MIME-Version: 1.0 In-Reply-To: <11903480.O9o76ZdvQC@monk> User-Agent: Mutt/1.8.3 (2017-05-23) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-loop: linux-lvm@redhat.com Cc: linux-lvm@redhat.com Subject: Re: [linux-lvm] cache_check --clear-needs-check-flag does not clear needs_check flag? X-BeenThere: linux-lvm@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk Reply-To: LVM general discussion and development List-Id: LVM general discussion and development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-lvm-bounces@redhat.com Errors-To: linux-lvm-bounces@redhat.com X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=linux-lvm-bounces@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Disposition: inline Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit On Wed, Dec 09, 2020 at 08:57:07PM +0100, Dennis Schridde wrote: > On Mittwoch, 9. Dezember 2020 20:30:51 CET David Teigland wrote: > > On Wed, Dec 09, 2020 at 08:06:41PM +0100, Dennis Schridde wrote: > > > How would you proceed to repair this cache? I can recreate it as a > > > cachepool, but first I need to gain back access to the data, i.e. get > > > into a state where I can --uncache. > > > > I know that cachevols do not yet work with lvconvert --repair, which uses > > cache_repair, but this must be another case where cache_repair is still > > needed. If this is writethough mode you should be able to simply drop the > > cache with lvconvert --splitcache and then recreate it. > > Sadly the cache is in writeback mode. > > Is my understanding correct that the cache itself is fine? It is just the > inability to clear the needs_check flag that is preventing me from using the > device? I suspect the cache itself is fine and we're just missing a way to clear that flag in the cache metadata. I'm looking for a workaround for that until we can sort out a complete fix. Dave _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/