* [linux-lvm] 12 x UDMA disks -- problems
@ 2000-03-09 15:41 Bruce Hewitson
2000-03-09 17:49 ` Holger Grothe
2000-03-09 20:50 ` Michael Loftis
0 siblings, 2 replies; 3+ messages in thread
From: Bruce Hewitson @ 2000-03-09 15:41 UTC (permalink / raw)
To: linux-lvm
I am trying to use 12x37Gig UDMA disks off 3 Promise/Ultra-66 ide
controlers providing 6 ide chains. However, MAKEDEV will only create
devices hd[a-l] --- I need in addition devices hd[m-p]. I looked in the
MAKEDEV script, and can see two places where I can extend the devices to
inlude these, but am stumped whith the lines
...
...
major=`Major ide4 56`
major=`Major ide5 57`
For ide6 and ide7, how do I determine the Major numbers?
Any help appreciated.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| Assoc. Prof. Bruce C. Hewitson Ph: +27 21 650 2878 |
| Dept. Environmental & Geographical Sc. Fax: +27 21 650 3791 |
| University of Cape Town, Private Bag, Rondebosch, South Africa 7701 |
| hewitson@egs.uct.ac.za http://www.egs.uct.ac.za/csag |
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [linux-lvm] 12 x UDMA disks -- problems
2000-03-09 15:41 [linux-lvm] 12 x UDMA disks -- problems Bruce Hewitson
@ 2000-03-09 17:49 ` Holger Grothe
2000-03-09 20:50 ` Michael Loftis
1 sibling, 0 replies; 3+ messages in thread
From: Holger Grothe @ 2000-03-09 17:49 UTC (permalink / raw)
To: linux-lvm
On Thu, Mar 09, 2000 at 05:41:15PM +0200, Bruce Hewitson wrote:
[...]
> major=`Major ide4 56`
> major=`Major ide5 57`
>
> For ide6 and ide7, how do I determine the Major numbers?
>
see <kernelsource>/Documentation/devices.txt
Holger
--
Holger Grothe (Email: grothe@mathematik.tu-darmstadt.de)
Fachbereich Mathematik, TU Darmstadt
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [linux-lvm] 12 x UDMA disks -- problems
2000-03-09 15:41 [linux-lvm] 12 x UDMA disks -- problems Bruce Hewitson
2000-03-09 17:49 ` Holger Grothe
@ 2000-03-09 20:50 ` Michael Loftis
1 sibling, 0 replies; 3+ messages in thread
From: Michael Loftis @ 2000-03-09 20:50 UTC (permalink / raw)
To: Bruce Hewitson; +Cc: linux-lvm
ide0..ide5
The ide count is 0 based. Major number is that of the ide controller.
Minor is that of the 'right' partition.
ide4 master is 56,0 (hdi) and ide4 slave is 56,64 (hdj) my notation is
major/minor so
mknod hdi b 56 0
mknod hdj b 56 64
Would get you the correct entries. Partitions are +1 so hdi1 is
mknod hdi1 b 56 1
mknod hdi2 b 56 2
And for hdj
mknod hdj1 b 56 65
mknod hdj2 b 56 66
That is assuming the major number you quoted below is correct :)
Michael Loftis
Bruce Hewitson wrote:
> I am trying to use 12x37Gig UDMA disks off 3 Promise/Ultra-66 ide
> controlers providing 6 ide chains. However, MAKEDEV will only create
> devices hd[a-l] --- I need in addition devices hd[m-p]. I looked in the
> MAKEDEV script, and can see two places where I can extend the devices to
> inlude these, but am stumped whith the lines
>
> ...
> ...
> major=`Major ide4 56`
> major=`Major ide5 57`
>
> For ide6 and ide7, how do I determine the Major numbers?
>
> Any help appreciated.
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> | Assoc. Prof. Bruce C. Hewitson Ph: +27 21 650 2878 |
> | Dept. Environmental & Geographical Sc. Fax: +27 21 650 3791 |
> | University of Cape Town, Private Bag, Rondebosch, South Africa 7701 |
> | hewitson@egs.uct.ac.za http://www.egs.uct.ac.za/csag |
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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