[Grml] Re: Re: [OT] udev and number of devices

Michael Prokop mika at grml.org
Mon Dec 4 23:50:16 CET 2006


* T <mlist4suntong at yahoo.com> [20061204 23:15]:
> On Mon, 04 Dec 2006 11:31:15 +0100, Michael Prokop wrote:

> >> > My HD used to have 15 partitions, now I created another one, the 16th, but
> >> > it is not recognized by udev [...]

[...]

> > Such a limit does not exist for udev:
> > root at grml ~ # ls -la /dev/hda*

> Thanks for the respond mika. glad to know that. The difference is mine is
> sda and yours is hda.

> I think the answer I get from gmane.linux.debian.user by Greg Folkert is
> right, my SATA is recognized as SCSI device, which limits to 15 partitions
> by SCSI Standard. 

Ah right.

> However, both responds from gmane.linux.debian.user implied that the sda16
> should be recognized as sdb (under both linux & windows). any idea?

It's a limit of the kernel.

A possible solution might be the patch from:

  http://lwn.net/Articles/110426/

But we have to review and test that one. It's on the todolist:
http://bts.grml.org/grml/issue42 - but it's definitely queued for
post 0.9, we had the full freeze for grml 0.9 and grml-small 0.3
right in those minutes. And 2.6.19 will have some further changes
due to Libata PATA merge as well....

regards,
-mika-
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