Comments on: A Simple Block Driver for Linux Kernel 2.6.31

By: Sunil

Sunil — Fri, 22 Feb 2013 20:04:08 +0000

good work really.

By: chinna

chinna — Wed, 21 Nov 2012 08:46:42 +0000

excellent article really it helped me alot…….thnx a lot

By: Eddy

Eddy — Sat, 27 Oct 2012 23:58:21 +0000

Thanks, I didn’t know ready made images were available. This makes life much easier.

By: Pat Patterson

Pat Patterson — Sat, 27 Oct 2012 19:09:38 +0000

Eddy – as I mention in the article, the block driver interface changed significantly in 2.6.31, so any work you’re doing in 2.6.24 will be wasted. Grab a VMware or VirtualBox image of a recent Ubuntu – you’ll have it spun up and working in no time.

By: Eddy

Eddy — Sat, 27 Oct 2012 18:31:20 +0000

Yes, it is simply because I don’t use Linux much and I have a 2.6.24 already loaded. I am trying to get some understanding of, what I call, “driver interface” code … I have always only been at the hardware driver level. If I try to load a later version without any experience I will certainly run into problems which will cost time that I don’t have.

The x command in fdisk means “extra functionality (experts only)”

By: Pat Patterson

Pat Patterson — Sat, 27 Oct 2012 17:35:08 +0000

Hi Eddy – sorry, I don’t know the ‘x’ command to fdisk. Is there a reason you’re using a four-year old kernel?

By: Eddy

Eddy — Sat, 27 Oct 2012 14:32:24 +0000

I’m using 2.6.24. I built built this by using the source from http://lwn.net/Articles/58720/. All went well except that fdisk must have changed because I have to use x instead of n to create a new partition (typing n just says to use x). But in the x menu there is no way to create a new partition. Then I checked “man fdisk” but that also does not say how to create the partition.

Can someone give me additional information on how to create the necessary partition with fdisk from Linux 2.6.24?

By: Pat Patterson

Pat Patterson — Thu, 27 Sep 2012 17:48:21 +0000

Hi Pradeep – the sample code in this blog post is specifically for kernel version 2.6.31 and later. You should use the example at http://lwn.net/Articles/58719/

By: pradeep

pradeep — Thu, 09 Aug 2012 08:19:26 +0000

Hi ,
I am new to the block device driver . When I was doing the insmod ,I am getting a system hang . If I comment out add_disk () , I could see the driver is inserting . Why the add_Disk () is causing hang .I am usinh redhat 2.6.18

Thanks
Pradeep

By: Pat Patterson

Pat Patterson — Mon, 09 Jul 2012 17:39:03 +0000

ayman – no idea – sorry!