From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) by finch.gentoo.org (Postfix) with ESMTP id EA5B01381F3 for ; Thu, 8 Nov 2012 00:14:08 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 687B9E0675; Thu, 8 Nov 2012 00:13:53 +0000 (UTC) Received: from icp-osb-irony-out3.external.iinet.net.au (icp-osb-irony-out3.external.iinet.net.au [203.59.1.219]) by pigeon.gentoo.org (Postfix) with ESMTP id BE356E0654 for ; Thu, 8 Nov 2012 00:12:34 +0000 (UTC) X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: Av0EAIb4mlA6B9+S/2dsb2JhbABEhhi9U4EIgkgEeg0CJgJfiBybLY5QkxGBIIsNhRSBEwOIWJMOIoo3gnyBTw X-IronPort-AV: E=Sophos;i="4.80,734,1344182400"; d="scan'208";a="66903198" Received: from unknown (HELO moriah.localdomain) ([58.7.223.146]) by icp-osb-irony-out3.iinet.net.au with ESMTP; 08 Nov 2012 08:12:08 +0800 Received: from localhost (localhost [127.0.0.1]) by moriah.localdomain (Postfix) with ESMTP id F0C0E27A3DD for ; Thu, 8 Nov 2012 08:12:07 +0800 (WST) X-Virus-Scanned: amavisd-new at lan.localdomain Received: from moriah.localdomain ([127.0.0.1]) by localhost (moriah.lan.localdomain [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id WKdhSLnyqPCR for ; Thu, 8 Nov 2012 08:12:02 +0800 (WST) Received: from [127.0.0.1] (localhost [127.0.0.1]) by moriah.localdomain (Postfix) with ESMTP id 41BE627A3E8 for ; Thu, 8 Nov 2012 08:12:02 +0800 (WST) Message-ID: <1352333522.14577.7.camel@moriah> Subject: [gentoo-user] OT: btrfs and qemu From: William Kenworthy To: gentoo-user Date: Thu, 08 Nov 2012 08:12:02 +0800 Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.4.4 Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org Mime-Version: 1.0 Content-Transfer-Encoding: 7bit X-Archives-Salt: 35ffd004-db71-4966-9dd5-1fb812e7e831 X-Archives-Hash: 7d9c0ef6374fa88bd81c847882ac7354 I am testing a small ceph cluster implemented in qemu-kvm and seeing there are a few cloudy types here who may have tried this, I though I'd ask about my problem before reworking. I decided to go btrfs in the VM's and the ceph storage (all qcow2) on a reiserfs host fs. So far so good, but I am getting btrfs problems - throws an error and goes readonly -> oops/crash in btrfs I am now using cache=none for qemu (which is recommended for vm's on a btrfs host, though not the case here) and that helped some. My question is ... are there any other settings to help this configurations stability/reliability using in vm btrfs? Otherwise I'll go back to reiserfs for the hosts and try xfs for the ceph storage. BillK