Thread (6 messages) flat view 6 messages, 4 authors, 2012-04-12

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

From: Tejun Heo <tj@kernel.org>
Date: 2012-03-30 15:26:21
Also in: kvm, linux-scsi, lkml

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 <redacted>
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
partition number?  [sh]dX's were created when there weren't supposed
to be too many disks, so we had to come up with the horrible alphabet
based numbering scheme but vd is new enough.  I mean, naming is one
thing but who wants to figure out which sequence is or guess what
comes next vdzz9?  :(

If we're gonna move it to block layer, let's add big blinking red
comment saying "don't ever use it for any new driver".

Thanks.

-- 
tejun
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