[RFC][PATCH 0/5] NFS: trace points added to mounting path

[Trond Myklebust]

On Thu, 2009-01-22 at 08:07 -0500, Steve Dickson wrote:
> > I think it might be a good idea to flesh out a bit what you mean by
> > "debugging" here. Since you mentioned it in conjunction with the two
> > words "administrators" and "scripts", I assume that you are not talking
> > about kernel code debugging?
> I'm talking debugging for both admins and kernel people...
> 
> With trace points and systemtap you can do both.

Yes, but we still need to figure out details of what each type of user
is expecting/wants.

I suspect that when we get down to cases, we will find that a lot of the
tracepoints that administrators find useful will want to be put in the
VFS rather than in the filesystems themselves. If you have tracepoints
in sys_stat() and sys_fstat(), why would you also need a tracepoint in
nfs_getattr()? AFAICS, that would just make scripting ugly...

Cheers
  Trond