From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dan Mick Subject: Re: librbd: error finding header Date: Mon, 09 Jul 2012 02:03:41 -0700 Message-ID: <4FFA9E6D.7030207@inktank.com> References: <4FFA6F35.4040102@bashkirtsev.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail-pb0-f46.google.com ([209.85.160.46]:37361 "EHLO mail-pb0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751478Ab2GIJDp (ORCPT ); Mon, 9 Jul 2012 05:03:45 -0400 Received: by pbbrp8 with SMTP id rp8so18958706pbb.19 for ; Mon, 09 Jul 2012 02:03:45 -0700 (PDT) In-Reply-To: <4FFA6F35.4040102@bashkirtsev.com> Sender: ceph-devel-owner@vger.kernel.org List-ID: To: Vladimir Bashkirtsev Cc: ceph-devel@vger.kernel.org Vladimir: you can do some investigation with the rados command. What does rados -p rbd ls show you? On 07/08/2012 10:42 PM, Vladimir Bashkirtsev wrote: > Hello, > > I just hit this error: > > error opening image sip.logics.net.au: (2) No such file or directory > 2012-07-09 15:03:59.935835 7ffbe0673780 -1 librbd: error finding > header: (2) No such file or directory > > Googled around and found that Oliver Francke had similar issue back in > March. Read your responses but still unclear where to start to dig. > Just upgraded from 0.47.3 to 0.48, done rolling upgrade and all RBD > images are OK with exception of this one. Notably as upgrade was done > while VM was up it continued to run unaffected (ie all data inside of > VM was written and read as nothing happened). It makes me think that > there no data loss but mere broken header. > > Of course I have a backup of VM and can pull it back in no time but I > am really interested (and I am sure other ceph users) how to recover > from such failures? > > Regards, > Vladimir > -- > 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