Tutorial or sample code for device mapper

Tutorial or sample code for device mapper

[George Shuklin]

Good day.

I've trying to find any 'newbie' documentation for device mapper. 
Something like simple one-to-one IO passtrough or something like that. 
Any suggestion? Or, may be name of the simplest existing device-mapper 
based driver to research?

Thanks.

Re: Tutorial or sample code for device mapper

[Frederick Grose]

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On Mon, Jan 30, 2012 at 6:25 PM, George Shuklin <george.shuklin@gmail.com>wrote:

> Good day.
>
> I've trying to find any 'newbie' documentation for device mapper.
> Something like simple one-to-one IO passtrough or something like that. Any
> suggestion? Or, may be name of the simplest existing device-mapper based
> driver to research?
>
> Thanks.


Red Hat has this:
http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Logical_Volume_Manager_Administration/device_mapper.html


There is also the kernel documentation tree:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=tree;f=Documentation/device-mapper;hb=HEAD
<http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=tree;f=Documentation/device-mapper;hb=HEAD%20>

I'm curious about what others might suggest.

        --Fred

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