File system query

[Rohan Puri]

On Tue, Jun 18, 2013 at 12:19 AM, Dibyayan Chakraborty
<dib.coolguy at gmail.com> wrote:
> Hi,
> I am working on a project which requires to implement a file system with
> journaling capability.
>
> While i found a number of simple implementations of file systems , they all
> were lacking the journaling capability.
> like https://github.com/raczzoli/testfs or
> http://hi.baidu.com/yanyulou/item/e31a15f3b559ae49932af287
>
> Now that i have implemented the formating procedures for the file system i
> think the next step would be to implement super_block operations , file
> operations for the VFS.
>
> I came to know that ext3/ext4 uses a jbd interface which implements the
> journaling capability in a file system independent way. But i could not
> find any documentation or details for using the jbd interface.
>
> So, any help which points out to the specific details of jbd interface or
> any comments which might be helpful in implementing the journaling
> capability is welcome.
>
>
> --
> With Regards
> Dibyayan Chakraborty
>
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>
Hi Dibyayan,

Manish has written a nice article explaining jbd iinterfaces
implementation of ext3, explains in detail,

Link  http://www.linuxforums.org/articles/journalling-block-device-jbd-_1544.html

- Rohan