From mboxrd@z Thu Jan 1 00:00:00 1970 From: Fyodor Ustinov Subject: Re: read performance not perfect Date: Fri, 05 Aug 2011 02:38:32 +0300 Message-ID: <4E3B2D78.5060605@ufm.su> References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail.ufm.su ([77.120.103.19]:41898 "EHLO mail.ufm.su" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753089Ab1HDXii (ORCPT ); Thu, 4 Aug 2011 19:38:38 -0400 In-Reply-To: Sender: ceph-devel-owner@vger.kernel.org List-ID: To: Sage Weil Cc: ceph-devel@vger.kernel.org On 08/04/2011 10:53 PM, Sage Weil wrote: > > The current patches are on top of v3.0, but you should be able to rebase > the readahead stuff on top of anything reasonably recent. > > sage As usual. cluster - latest 0.32 from your ubuntu rep. client - latest git-pulled kernel. dd file from cluster to /dev/null and press ctrl-c. In syslog: [ 12.950114] libceph: mon0 10.5.51.230:6789 connection failed [ 19.971512] libceph: client4119 fsid af9be081-9777-e2cc-8988-ba02fff0f390 [ 19.971845] libceph: mon0 10.5.51.230:6789 session established [ 92.891202] libceph: try_read bad con->in_tag = -108 [ 92.891258] libceph: osd5 10.5.51.145:6801 protocol error, garbage tag [ 114.508350] libceph: try_read bad con->in_tag = 122 [ 114.508406] libceph: osd1 10.5.51.141:6800 protocol error, garbage tag [ 119.077246] libceph: try_read bad con->in_tag = -39 [ 119.077301] libceph: osd7 10.5.51.147:6801 protocol error, garbage tag WBR, Fyodor.