Hi Gaurav, I went through your blog and it is really informative. But after reading that i realized that i have a question: If I want to write a block device driver which is going to sit on lvm (and do some functionality on top of it) then should i go for the block device driver api or write it as a device mapper target. What are the advantages/disadvantages of both the approaches.
Regards, Neha On Tue, Apr 30, 2013 at 4:24 AM, Gaurav Mahajan <[email protected] > wrote: > Hi Amit, > > I had compiled some notes on my blog. > Here are some links on writing your own device mapper target. > http://techgmm.blogspot.in/p/writing-your-own-device-mapper-target.html > > Concept of device mapper target. > http://techgmm.blogspot.in/p/device-mapper-layer-explored-every.html > > Thanks, > Gaurav. > > > On Tue, Apr 30, 2013 at 5:05 AM, Anatol Pomozov > <[email protected]>wrote: > >> Hi >> >> On Mon, Apr 29, 2013 at 9:51 AM, amit mehta <[email protected]> wrote: >> > On Sun, Apr 28, 2013 at 5:24 PM, Greg Freemyer <[email protected]> >> 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/ >> >> _______________________________________________ >> Kernelnewbies mailing list >> [email protected] >> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies >> > > > _______________________________________________ > Kernelnewbies mailing list > [email protected] > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > >
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