[linux-lvm] Troubles with 2.6.10 kernel, lvm and megaraid

[Guillaume Rousse]

Hello.

I have troubles with an host running mandrake 10.1, hardware raid with 
megaraid driver, and lvm. The setup works fine with initial 
configuration, using a 2.6.8 kernel, but we recently tried to switch to 
  2.6.10 as we're facing some unknown lock issues. Now the lvm doesn't 
work anymore, and stop at boot with this message:

device-mapper ioctl cmd 0 failed: Inappropriate ioctl for device

Apparently, something changed either in the megaraid driver (I am still 
using the legacy one) or the device mapper. I didn't attempted yet to 
backport user-spaces tools such as lvm and libdevice-mapper, as I'm 
trying to minimise support calls for rebooting the machine).

Any advice ?--
Divide the number of servings by two when reading the directions for 
reconstituting anything freeze-dried
		-- Murphy's Laws of Camping n°16