From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([209.51.188.92]:52350) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gtN12-00055v-DN for qemu-devel@nongnu.org; Mon, 11 Feb 2019 20:37:42 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gtMpU-0006tB-4i for qemu-devel@nongnu.org; Mon, 11 Feb 2019 20:25:47 -0500 Received: from indium.canonical.com ([91.189.90.7]:47322) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1gtMpJ-0006kN-CP for qemu-devel@nongnu.org; Mon, 11 Feb 2019 20:25:33 -0500 Received: from loganberry.canonical.com ([91.189.90.37]) by indium.canonical.com with esmtp (Exim 4.86_2 #2 (Debian)) id 1gtMpH-00076c-T5 for ; Tue, 12 Feb 2019 01:25:31 +0000 Received: from loganberry.canonical.com (localhost [127.0.0.1]) by loganberry.canonical.com (Postfix) with ESMTP id BD3B62E80CC for ; Tue, 12 Feb 2019 01:25:31 +0000 (UTC) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Date: Tue, 12 Feb 2019 01:16:07 -0000 From: John Snow <1808928@bugs.launchpad.net> Reply-To: Bug 1808928 <1808928@bugs.launchpad.net> Sender: bounces@canonical.com References: <154511858636.8591.3431958243733477284.malonedeb@gac.canonical.com> Message-Id: <154993416748.25593.344286169027865049.malone@gac.canonical.com> Errors-To: bounces@canonical.com Subject: [Qemu-devel] [Bug 1808928] Re: Bitmap Extra data is not supported List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Hi, bitmap extensions have a field that allows us to attach extra/arbitrary data to them. It is not currently used by QEMU. If this field is set, it means something corrupted your qcow2. Please make a backup of your qcow2 file first (because attempting to repair a broken qcow2 can sometimes make it worse), and then please try running qemu-img check to try and diagnose the image. What happened to cause the "disastrous error", do you recall? -- = You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1808928 Title: Bitmap Extra data is not supported Status in QEMU: New Bug description: i am using dirty bitmaps and drive-backup. It works as aspected. Lately, i encounter a disastrous error. There is not any information about that situation. I cannot reach/open/attach/info or anything with a qcow2 file. virsh version Compiled against library: libvirt 4.10.0 Using library: libvirt 4.10.0 Using API: QEMU 4.10.0 Running hypervisor: QEMU 2.12.0 "qemu-img: Could not open '/var/lib/libvirt/images/test.qcow2': Bitmap extra data is not supported" what is that mean? what should i do? i cannot remove bitmap. i cannot open image or query. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1808928/+subscriptions