From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wido den Hollander Subject: Re: Unable to mount cephfs - can't read superblock Date: Sat, 09 Feb 2013 11:42:57 +0100 Message-ID: <51162831.1070506@42on.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from websrv.42on.com ([31.25.102.167]:37091 "EHLO websrv.42on.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752729Ab3BIKm7 (ORCPT ); Sat, 9 Feb 2013 05:42:59 -0500 In-Reply-To: Sender: ceph-devel-owner@vger.kernel.org List-ID: To: Adam Nielsen Cc: ceph-devel@vger.kernel.org On 02/09/2013 11:40 AM, Adam Nielsen wrote: > Hi again, > > I'm trying to mount my new Ceph volume on a remote PC using cephfs. > I've followed the quick start guide, but when I try to mount the > filesystem I get this: > > remote$ mount -t ceph 192.168.0.6:6789:/ /mnt/ceph/ > mount: 192.168.0.6:6789:/: can't read superblock > > remote$ dmesg | tail > [951382.981690] libceph: client4105 fsid > aa447ff8-8270-491b-b59e-2735e852eaf5 > [951382.983486] libceph: mon0 192.168.0.6:6789 session established > > I'm not sure what the problem is. The osd, mon and mds daemons are > running on the Ceph host and no traffic is firewalled between the two > machines. I have disabled authentication in ceph.conf. The only issue > I can see is this: > > cephhost$ ceph health > HEALTH_WARN 192 pgs degraded; 192 pgs stuck unclean > Could you show the output of "ceph -s" Also, which version of Ceph are you using under which OS? Wido > I'm not sure what that means as I have only used mkcephfs and then > started the ceph service. I haven't actually used it yet so I'm not > sure where the unclean pgs are coming from. The underlying filesystem > is ext4 though. > > I'm a bit stuck as to what to do next. I can't see why the filesystem > won't mount remotely, and the troubleshooting docs say unclean pgs are > related to outages which doesn't seem possible on a newly created volume > with only one osd/mon/mds instance. > > Any pointers would be much appreciated! > > Many thanks, > Adam. > > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Wido den Hollander 42on B.V. Phone: +31 (0)20 700 9902 Skype: contact42on