hi,

is it possible to write a filter block device driver using LDI or even without 
using it. The objective is to write a filter driver which operates on the given 
block device, without the necessity to create a new block device and routing 
i/o through this new device, as is generally done using LDI.

I want to put the driver in the i/o path of the block device, and it has to 
work transparently of the existing block driver or md driver. Eg. if there is a 
fs mounted on a device dev1, the i/o on the device should be filtered without 
requiring the user to mount a device say pseudodev1 of the filter driver.

Any suggestions ?

Thanks,
Parry
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