[RndTbl] Missing disk device

John Lange john at johnlange.ca
Tue May 3 14:08:24 CDT 2011


You didn't say what distro you are running but unless its really old, mknod
is depreciated in favour of udev.

Has the system been rebooted? If not, hot swap often requires a refresh of
the devices. This is often proprietary to the controller. Google hp_rescan
for example.

Also you may want to look at 'kpartx' .


John

On 2011-05-03 1:27 PM, "Robert Keizer" <robert at keizer.ca> wrote:

I would figure out the major and minor numbers of that device, based
on what the other ones are, then use mknod to create it.

Unless there's something really crazy going on, those devices should
be in order, meaning you can just increment the numbers.

A "ls -alh /dev | grep sda" gives the following:
brw-rw----   1 root disk      8,   0 May  3 13:18 sda
brw-rw----   1 root disk      8,   1 May  3 13:19 sda1
brw-rw----   1 root disk      8,   2 May  3 13:18 sda2
brw-rw----   1 root disk      8,   5 May  3 13:18 sda5

Where 8 is the major number, and 0 is the minor number for sda. Be
sure to specify a block device rather than a character one when using
mknod.. I made that mistake and got something crazy at one point.

Hope this helps,
Rob


On Tue, May 3, 2011 at 11:32 AM, Kevin McGregor
<kevin.a.mcgregor at gmail.com> wrote:
> I have a HP P...
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