From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Priebe - Profihost AG Subject: Re: how to debug slow rbd block device Date: Wed, 23 May 2012 09:01:21 +0200 Message-ID: <4FBC8B41.1020300@profihost.ag> References: <4FBB8A5B.9010500@profihost.ag> <4FBBEBC8.1000205@profihost.ag> <1C70F3FB753C4AEC97247E04FAE3C733@inktank.com> <4FBBF74C.9020608@profihost.ag> <45F1742481D84E7A90951816DB23609F@inktank.com> <4FBBFE7B.4060406@profihost.ag> <65E9589544C4489F93761035433ADC01@inktank.com> <4FBC811F.5060004@profihost.ag> <4FBC83F3.7070400@inktank.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from mail.profihost.ag ([85.158.179.208]:42751 "EHLO mail.profihost.ag" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755428Ab2EWHBO (ORCPT ); Wed, 23 May 2012 03:01:14 -0400 In-Reply-To: <4FBC83F3.7070400@inktank.com> Sender: ceph-devel-owner@vger.kernel.org List-ID: To: Josh Durgin Cc: Greg Farnum , ceph-devel@vger.kernel.org Am 23.05.2012 08:30, schrieb Josh Durgin: > On 05/22/2012 11:18 PM, Stefan Priebe - Profihost AG wrote: >> Hi, >> >>>> So try enabling RBD writeback caching =E2=80=94 see http://marc.in= fo >>>> /?l=3Dceph-devel&m=3D133758599712768&w=3D2 >>>> will test tomorrow. Thanks. >> Can we path this to the qemu-drive option? >=20 > Yup, see http://article.gmane.org/gmane.comp.file-systems.ceph.devel/= 6400 I'm sorry, i still don't get it where to pass rbd_cache_max_dirty, ... can i add it just to the ceph.conf? Even with qemu 1.0? Stefan -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html