Noob problems

[Phillip Susi]

Try straceing fdisk to see what system call fails.  My guess is that 
there is something wrong with the device node such as it is using the 
wrong major dev number, and opens on it fail.  Verify the device number 
against what sysfs/proc says.

Duane Evenson wrote:
> I cannot access the raid device with fdisk: "Unable to read
> /dev/mapper/hpt37x_fjfegdadi".
> 
> I have two identical hard drives. They have empty partition tables.
> # dmraid -r
> /dev/hde: hpt37x, "hpt37x_fjfegdadi", stripe, ok, 120064832 sectors, 
> data@ 0
> /dev/hdg: hpt37x, "hpt37x_fjfegdadi", stripe, ok, 120064822 sectors,
> data@ 10
> # ls -l /dev/mapper/
> total 0
> crw------- 1 root root 10, 63 Oct 25 11:55 control
> # dmraid -ay
> ERROR: dos: reading /dev/mapper/hpt37x_fjfegdadi[No such file or directory]
> # ls -l /dev/mapper/
> total 0
> crw------- 1 root root  10, 63 Oct 25 11:55 control
> brw-rw---- 1 root disk 253,  0 Oct 26 02:07 hpt37x_fjfegdadi
> # fdisk /dev/mapper/hpt37x_fjfegdadi
> 
> Unable to read /dev/mapper/hpt37x_fjfegdadi
> 
> What's my problem? Why can't I access the raid device?
> Just to be thorough I tried this with identical filled partition tables
> as well -- no joy.
> 
> TIA
> Duane
>