From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wido den Hollander Subject: Re: Xen blktap driver for Ceph RBD : Anybody wants to test ? :p Date: Thu, 18 Apr 2013 21:35:16 +0200 Message-ID: <51704AF4.7060908@42on.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from websrv.42on.com ([31.25.102.167]:53466 "EHLO websrv.42on.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752602Ab3DRTfU (ORCPT ); Thu, 18 Apr 2013 15:35:20 -0400 In-Reply-To: Sender: ceph-devel-owner@vger.kernel.org List-ID: To: Sylvain Munaut Cc: ceph-devel@vger.kernel.org Hi, On 04/18/2013 05:05 PM, Sylvain Munaut wrote: > Hi, > > I've been working on getting a working blktap driver allowing to > access ceph RBD block devices without relying on the RBD kernel driver > and it finally got to a point where, it works and is testable. > This is really cool! I already pointed a couple at Citrix at this since I'd really love to see this go into XenServer at some point and expand the CloudStack RBD support from KVM to XenServer as well. > Some of the advantages are: > - Easier to update to newer RBD version > - Allows functionality only available in the userspace RBD library > (write cache, layering, ...) > - Less issue when you have OSD as domU on the same dom0 > - Contains crash to user space :p (they shouldn't happen, but ...) > > It's still an early prototype, but if you want to give it a shot and > give feedback. > > You can find the code there https://github.com/smunaut/blktap/tree/rbd > (rbd branch). > > Currently the username, poolname and image name are hardcoded ... > (look for FIXME in the code). I'll get to that next, once I figured > the best format for arguments. > My Xen is kind of rusty, last time I used it was about 3 years ago, but can't you do something similar like with Qemu? Just submit all the arguments semi-column separated? > Cheers, > > Sylvain > -- > 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 > -- Wido den Hollander 42on B.V. Phone: +31 (0)20 700 9902 Skype: contact42on