From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sunset.davemloft.net (unknown [74.93.104.97]) by ozlabs.org (Postfix) with ESMTP id 8E6DCDDFEF for ; Sat, 16 Jun 2007 09:08:41 +1000 (EST) Date: Fri, 15 Jun 2007 16:08:58 -0700 (PDT) Message-Id: <20070615.160858.26276547.davem@davemloft.net> To: James.Bottomley@SteelEye.com Subject: Re: [patch 4/6] ps3: Disk Storage Driver From: David Miller In-Reply-To: <1181947242.3600.8.camel@mulgrave.il.steeleye.com> References: <20070615171545.316dfac7@the-village.bc.nu> <20070615.141917.85409547.davem@davemloft.net> <1181947242.3600.8.camel@mulgrave.il.steeleye.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Cc: axboe@kernel.dk, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org, paulus@samba.org, Geert.Uytterhoeven@sonycom.com, dwmw2@infradead.org, alan@lxorguk.ukuu.org.uk List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: James Bottomley Date: Fri, 15 Jun 2007 15:40:42 -0700 > On Fri, 2007-06-15 at 14:19 -0700, David Miller wrote: > > Another quirk I have to deal with is that under LDOMs you > > can export full disks and also just slices. So I'll have > > to get down into the partition machinery to support that > > somehow. > > For this, it sounds like you might find nbd a more enticing > proposition ... it already is partition independent and is basically a > block to net socket exporter. That's not gonna work, it's a totally different model. I have a predefined protocol over hypervisor provided "channels" and page flipping also done by the hypervisor for the bulk data transfer. For the client side I cannot change the hypervisor nor the server speaking on the other end. And when I do write a server I do want it to be able to speak to all of the existing clients. There's SCSI command pass through as well, as I keep mentioning as it's an important reason I don't want to go with any of the non-SCSI solutions (other than perhaps ATA) being suggested.