From mboxrd@z Thu Jan 1 00:00:00 1970 From: Martin Mailand Subject: Re: Random blocks when accessing rbd images Date: Thu, 15 Dec 2011 17:31:22 +0100 Message-ID: <4EEA20DA.3030006@tuxadero.com> References: <1404301.on6okQVZ04@pc10> <4EEA1309.9030602@grnet.gr> <3807778.ycpoZxnZL4@pc10> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from einhorn.in-berlin.de ([192.109.42.8]:48566 "EHLO einhorn.in-berlin.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758988Ab1LOQbd (ORCPT ); Thu, 15 Dec 2011 11:31:33 -0500 In-Reply-To: <3807778.ycpoZxnZL4@pc10> Sender: ceph-devel-owner@vger.kernel.org List-ID: To: Guido Winkelmann Cc: ceph-devel@vger.kernel.org Hi Guido, I am running ceph version 0.39-37-g54758ab (commit:54758abccf429122c1bc3bce6d01bc33f1cfe238) on my cluster and I do not see this problem. Do you use the qemu rbd block driver or the kernel mount? How did you install ceph, via the packages? -martin Am 15.12.2011 16:45, schrieb Guido Winkelmann: > Am Donnerstag, 15. Dezember 2011, 17:32:25 schrieben Sie: >> On 12/15/2011 05:07 PM, Guido Winkelmann wrote: >>> Hi, >>> >>> I've got a small ceph cluster with one mon, one mds and two osds (all on >>> the same machine, for now), that I want to use as a block- and file >>> storage backend for qemu machine virtualisation. >>> >>> I found that read access to some of the rbd images, or parts of some of >>> them sometimes blocks indefinitely, usually after the image has been >>> sitting around untouched for a while, for example over night. This has >>> the effect that virtual machines that try to access their disks as well >>> as rbd commands like "rbd cp" will just hang indefinitely. >>> >>> I found that these blocks can usually be "fixed" by restarting one of >>> the> >>> osds. >>> >>> The last time this happened, ceph -s reported one of the osds to be in >>> state "active+clean+scrubbing". (I'm afraid I don't have the complete >>> output from ceph -s anymore.) >>> >>> Does anybody have any idea what could be going wrong here? >> >> I think it's fixed in v0.39 > > I'm already using 0.39, so, no. (Should have mentioned that to start with...) > > Guido > -- > 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