On Mon, Nov 24, 2014 at 7:03 AM, ygovind wrote:
> Hi - I have taken minor project on Btrfs file system as my independent study
> and trying to understand data/metadata allocation algorithm used in Btrfs
> file system. I would like to know how can I use Btrfs Tracepoints and Ftrace
> to debug. I was trying to find documents on web but wasn't able to find any
> document which can guide me through step by step process on using Btrfs
> Tracepoints or Ftrace on Btrfs.
>
> All the study so far is happening on a laptop with virtual box Ubuntu. I
> have downloaded latest kernel and trying to understand the flow by putting
> printk statements and compiling that module. In this setup - if you can
> guide me through the process of setting up tracepoints or Ftrace - that will
> really help me. Also, if you have any other suggestions on understanding
> allocation algorithms for data/metadata - I am open to learn.
>
> Best Regards,
> Yash
> --
> To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
> the body of a message to majord...@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi Yash,
Go through the design documents available online. btrfs makes use of
COW B-tree. You can get some papers related to this. For tracing, you
can also make use of systemtap.
- Rohan
--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
