From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alphe Salas Subject: Re: Forever growing data in ceph using RBD image Date: Thu, 17 Jul 2014 15:19:08 -0400 Message-ID: <53C821AC.1080307@kepler.cl> References: <53C7D97D.3010607@kepler.cl> <53C81266.6080306@kepler.cl> <20140717185714.GA10709@infradead.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail-qg0-f44.google.com ([209.85.192.44]:38341 "EHLO mail-qg0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752510AbaGQTTM (ORCPT ); Thu, 17 Jul 2014 15:19:12 -0400 Received: by mail-qg0-f44.google.com with SMTP id e89so2347994qgf.17 for ; Thu, 17 Jul 2014 12:19:12 -0700 (PDT) In-Reply-To: <20140717185714.GA10709@infradead.org> Sender: ceph-devel-owner@vger.kernel.org List-ID: To: Christoph Hellwig , Sage Weil Cc: ceph-devel I don t use QEMU /KVM just a plain regular rbd image format 1 map and mounted to a real machine that is used as proxy for data droping to ceph. --- Alphe Salas I.T ingeneer On 07/17/2014 02:57 PM, Christoph Hellwig wrote: > On Thu, Jul 17, 2014 at 11:27:31AM -0700, Sage Weil wrote: >> I assume you are using kvm/qemu? It may be that older versions aren't >> passing through trims; Josh would know more. Or maybe the trim sizes are >> too small to let rados effectively deallocate entire objects. Logs might >> help there. > > At least for the qemu version from a few month ago that I'm using in my > testing I explicitly have to enable passthrough of UNMAP/TRIM on the > qemu command line. >