[Gluster-devel] Bootstrapping glusterfsiostat

[Anand Avati]

On Fri, Jun 6, 2014 at 10:13 AM, Vipul Nayyar <nayyar_vipul at yahoo.com>
wrote:

> Hello,
>
> I'm Vipul and I'll be working on a tool called glusterfsiostat under GSOC
> this summer with KP as my mentor. Based on our discussion, the plan for the
> future is to build an initial working version of the tool in python and
> improve it later based on feedback. This tool will display i/o information
> about every glusterfs mount in the system.  The primary source for getting
> stats would be the .meta folder accessible in every mount. As of now, the
> meta xlator is a good resource to get the hierarchy and basic information
> about every translator being used in a mount. But in terms of statistics,
> it only shows latency of every FOP for each xlator.
>
> Since, our aim is to provide information similar to the tool nfsiostat,
> we're hungry for more information, which is available in the private data
> structures maintained by io-stats. One way that I see to achieve this is to
> define a dumpops structure in io-stats and a priv function in it, which can
> be used to dump custom info into the private file in the .meta folder. If
> you feel that there's a better way for doing this, please do guide me.
>

You could do that, or enhance the latency capturing functionality with more
stats, essentially making io-stats xlator redundant on the client side.


> On a second note, the tool would provide stats in properly formatted
> manner by default for human consumption and also in json format if it is
> needed by any other application.
>

That sounds good.

Thanks
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://supercolony.gluster.org/pipermail/gluster-devel/attachments/20140606/f6969bc5/attachment.html>