From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Disseldorp Subject: Re: [PATCH 1/2] ceph osd: add support for new op writesame Date: Thu, 10 Mar 2016 13:03:51 +0100 Message-ID: <20160310130351.0efc5775@g21.suse.de> References: <[PATCH 0/2] ceph osd: initial VMware VAAI support> <1457591672-17430-1-git-send-email-mchristi@redhat.com> <1457591672-17430-2-git-send-email-mchristi@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: Received: from mx2.suse.de ([195.135.220.15]:36011 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751912AbcCJMDx (ORCPT ); Thu, 10 Mar 2016 07:03:53 -0500 In-Reply-To: <1457591672-17430-2-git-send-email-mchristi@redhat.com> Sender: ceph-devel-owner@vger.kernel.org List-ID: To: Mike Christie Cc: ceph-devel@vger.kernel.org On Thu, 10 Mar 2016 00:34:31 -0600, Mike Christie wrote: > This adds a new ceph request writesame that writes a buffer of length > writesame.data_length bytes at writesame.offset over > writesame.length bytes. > > This command maps to SCSI's WRITE SAME request, so users like LIO+rbd > can pass this to the OSD. Right now, it only saves having to transfer > writesame.length bytes over the network, but future versions will be > to fully offload it by passing it directly to the FS/devices if they > support it. > > v2: > - Merge David's tracing fixes. > > Signed-off-by: Mike Christie Looks good Mike. Reviewed-by: David Disseldorp Cheers, David