Hi Amit,
I had compiled some notes on my blog.
Here are some links on writing your own device mapper target.
Concept of device mapper target.
Thanks,
Gaurav.
On Tue, Apr 30, 2013 at 5:05 AM, Anatol Pomozov <anatol.pomozov@xxxxxxxxx> wrote:
Hi
Some docs about multipath can be found here
On Mon, Apr 29, 2013 at 9:51 AM, amit mehta <gmate.amit@xxxxxxxxx> wrote:
> On Sun, Apr 28, 2013 at 5:24 PM, Greg Freemyer <greg.freemyer@xxxxxxxxx> 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.
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/
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