IO error issues with MD3000i on Linux

[Matthew Geier]

 I've now got 'yet another problem' with my md3000i multipath. Not the 
Dell mpp driver running. Fail over worked, etc...

 Now A RHEL update comes a long, upgrades the kernel, reboot, now the 
mpp driver doesn't load. Only I don't notice this immediately - as the 
system mounted a raw non mpp device. Only when I 'redistribute' LUNs 
does the server fail...

 I though the idea of dkms was that the module would re-compile as needed.

 Now looking in my demsg log I see

mppVhba: Unknown symbol mppCmn_SynchronousPRIo
mppVhba: Unknown symbol mppCmn_MapBusDeviceReset
mppVhba: Unknown symbol mppCmn_CheckForReservationHolder
mppVhba: Unknown symbol mppCmn_CheckAndSetTASBit
mppVhba: Unknown symbol mppCmn_MapBusDeviceResetV

etc, etc.

 So the mpp module failed to load into the new kernel...

 I hope since MD3000i rdac is making its way into the mainline kernel, 
this pain will go away..