Re: [PATCH 1/3] [RFC] genhd: add a new attribute in device structure

From: Douglas Gilbert
Date: Fri Jun 17 2011 - 11:41:59 EST

On 11-06-17 01:25 AM, Greg KH wrote:
On Thu, Jun 16, 2011 at 04:31:29PM -0400, James Bottomley wrote:
So again, I really don't like this, just fix the userspace tools to map
the proper device name that the kernel is using to the userspace name
the tool used, and all is fine. This has been done already today,
succesfully, by many of the big "enterprise" monitoring systems that
work quite well on Linux, proving that this is not something that the
kernel needs to provide to implement properly.

Well, it's expediency. Sure we could try to patch the world, but I
think the simple patch of getting the kernel to print a preferred name
solves 90% of the problem. Sure there is a long tail of userspace
components that needs fixing, but that can be done gradually if we take
the kernel route. If we go the userspace route, it will be a long while
before we even get to 50% coverage.

I do not think that just because some people feel it is easier to change
the kernel than change userspace tools, that we are somehow forced to
accept their changes.

As for "expediency", it has been a full year since the last time this
was proposed. All userspace tools that would need to be changed to
implement this in userspace have had updates released for them in that
year, and the changes needed to make to them could have been done

Could you elaborate taking one user space tool as an
example and tell us what changes you think should be

Are you talking about low level tools such as hdparm,
smartmontools and mine or tools further up the "food

Doug Gilbert
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