Documentation on device-mapper and friends

[Anatol Pomozov]

Hi

On Mon, Apr 29, 2013 at 9:51 AM, amit mehta <gmate.amit at gmail.com> wrote:
> On Sun, Apr 28, 2013 at 5:24 PM, Greg Freemyer <greg.freemyer at gmail.com> wrote:
>> A nice diagram of the overall storage subsystem is at http://www.thomas-krenn.com/en/oss/linux-io-stack-diagram.html
>>
>> Dm is just a single block in it, but it can help to see where it fits in overall.
>>
>> Btw: that diagram doesn't show the legacy ata driver that creates /dev/hdx style devices.  Has that been dropped while I wasn't paying attention?  I haven't used it in years, but I thought it was still used on embedded systems.
>>
>
> Thank you for sharing the link, but I'm looking for more
> detailed information on I/O stack in Linux, dm-mapper and
> multipath in particular.

Some docs about multipath can be found here

http://www.sourceware.org/lvm2/wiki/MultipathUsageGuide
http://christophe.varoqui.free.fr/refbook.html

The userspace part for tools is here
http://sourceware.org/lvm2/