From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ren Mingxin <renmx@cn.fujitsu.com>
Subject: Re: [PATCH 4/4] virtio_blk: use disk_name_format() to support mass
	of disks naming
Date: Mon, 02 Apr 2012 09:18:55 +0800
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To: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>, SCSI <linux-scsi@vger.kernel.org>, KVM <kvm@vger.kernel.org>, "Michael S. Tsirkin" <mst@redhat.com>, LKML <linux-kernel@vger.kernel.org>, VIRTUAL <virtualization@lists.linux-foundation.org>
List-Id: virtualization@lists.linuxfoundation.org

  On 03/30/2012 11:38 PM, Tejun Heo wrote:
> On Fri, Mar 30, 2012 at 08:26:06AM -0700, Tejun Heo wrote:
>> On Fri, Mar 30, 2012 at 05:53:52PM +0800, Ren Mingxin wrote:
>>>   The current virtblk's naming algorithm only supports 263  disks.
>>> If there are mass of virtblks(exceeding 263), there will be disks
>>> with the same name.
>>>
>>> By renaming "sd_format_disk_name()" to "disk_name_format()"
>>> and moving it into block core, virtio_blk can use this function to
>>> support mass of disks.
>>>
>>> Signed-off-by: Ren Mingxin<renmx@cn.fujitsu.com>
>> I guess it's already way too late but why couldn't they have been
>> named vdD-P where both D and P are integers denoting disk number and
> So, if a device name ends in digit the partition code adds delimiter
> 'p' automatically and this is already in use by md.  So, partitioned
> md devices are named mdDpP where D and P are base 10 number indicating
> the sequence like md12p4.  So, let's please add comment that new
> drivers should name their devices PREFIX%d where the sequence number
> can be allocated by ida.
>
>

Oh, got it. Just like md devices' names.

-- 
Thanks,
Ren