linux-kernel - Re: [PATCH 4/4] virtio_blk: use disk_name_format() to support mass of disks naming

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Date:	Sat, 31 Mar 2012 09:14:26 +0800
From:	Ren Mingxin <renmx@...fujitsu.com>
To:	Asias He <asias.hejun@...il.com>
CC:	Jens Axboe <axboe@...nel.dk>,
	"Michael S. Tsirkin" <mst@...hat.com>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Tejun Heo <tj@...nel.org>, LKML <linux-kernel@...r.kernel.org>,
	SCSI <linux-scsi@...r.kernel.org>, KVM <kvm@...r.kernel.org>,
	VIRTUAL <virtualization@...ts.linux-foundation.org>
Subject: Re: [PATCH 4/4] virtio_blk: use disk_name_format() to support mass
 of disks naming

  Hi, He:

On 03/30/2012 07:22 PM, Asias He wrote:
> On Fri, Mar 30, 2012 at 5:53 PM, Ren Mingxin<renmx@...fujitsu.com>  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.
> This fix is pretty nice. However, current virtblk's naming still
> supports up to 18278 disks, no?
> ( index 0  ->  vda, index 18277 ->  vdzzz ).

Sorry, I intended to type 26^3+ (26^2+26)...
It may still be a restriction which should be improved though.

Thanks,
Ren
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