From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mimecast-mx02.redhat.com (mimecast02.extmail.prod.ext.rdu2.redhat.com [10.11.55.18]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 517F7202450E for ; Fri, 4 Sep 2020 23:41:01 +0000 (UTC) Received: from us-smtp-1.mimecast.com (us-smtp-1.mimecast.com [207.211.31.81]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 07EAC80118B for ; Fri, 4 Sep 2020 23:41:01 +0000 (UTC) Received: by mail-lf1-f53.google.com with SMTP id u27so4653796lfm.13 for ; Fri, 04 Sep 2020 16:40:58 -0700 (PDT) Received: from [192.168.1.101] (m83-185-82-139.cust.tele2.se. [83.185.82.139]) by smtp.gmail.com with ESMTPSA id h17sm388361ljj.4.2020.09.04.16.40.55 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 04 Sep 2020 16:40:56 -0700 (PDT) From: =?utf-8?Q?Tomas_Dalebj=C3=B6rk?= Mime-Version: 1.0 (1.0) Date: Sat, 5 Sep 2020 01:40:54 +0200 Message-Id: Content-Transfer-Encoding: 8bit Subject: [linux-lvm] pvcreate to memory Reply-To: LVM general discussion and development List-Id: LVM general discussion and development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , List-Id: Content-Type: text/plain; charset="utf-8" To: linux-lvm@redhat.com hi is there a way to create vgda information to memory? I want to create a virtual LVM disk We have all the cow data on a disk, but # lvconvert -s vg/lv /dev/mydisk doesn’t accept the path to the disk device and if I create a symbolic disk in /dev/vg/mydisk of in /dev/mapper/vg—mydisk pointing to /dev/mydisk the ‘lvconvert’ command doesnt accept the cow data on the disk so I guess that the VGDA data has to be present on the disk in order for the lvconvert command to accept the data what do you think could be missing? is it the vgda meta data on the disk? if so, how can I create and emulate the vgda data so that the lvconvert command works? thanks in advance regards Tomas Sent from my iPhone