Re: newnfs user setup

Brandon Gooch wrote:
> On Fri, Sep 02, 2011 at 08:25:05PM -0400, Rick Macklem wrote:
> > Brandon Gooch wrote:
> > > On Thu, Sep 1, 2011 at 8:09 PM, Brandon Gooch
> > > <jamesbrandongooch_at_gmail.com> wrote:
> > > > On Fri, May 27, 2011 at 8:09 AM, Rick Macklem
> > > > <rmacklem_at_uoguelph.ca>
> > > > wrote:
> > > >>> On Thu, 26 May 2011, Rick Macklem wrote:
> > > >>> ...
> > > >>> > ??http://people.freebsd.org/~rmacklem/dtrace.patch
> > > >>> >
> > > >>> Hmm. Is it just me?
> > > >>> Trying to test the patch I get:
> > > >>>
> > > >>> (fs)(root) patch -C < dtrace.patch
> > > >>> Hmm... I can't seem to find a patch in there anywhere.
> > > >>>
> > > >> Here's how I apply the patch.
> > > >> - download dtrace.patch to somewhere, lets say /tmp, then
> > > >> # cd /usr/src/sys <-- sys subdirectory of a current head,
> > > >> ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? which you don't mind messing
> > > >> up
> > > >> ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? doesn't have to be at
> > > >> /usr/src/sys,
> > > >> ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? of course.
> > > >> # patch -p1 < /tmp/dtrace.patch
> > > >>
> > > >> rick
> > > >>
> > > >
> > > > What's the status on this patch? It would be nice to get
> > > > dtrace/newnfs
> > > > going for 9.0...it's not too late, right?
> > > >
> > > > I'll test the patch too BTW :)
> > > >
> > > > -Brandon
> > > >
> > >
> > > So it looks like the patch was committed to HEAD, but the bits to
> > > support the New NFS implementation were never flipped on -- is
> > > that
> > > for a good reason?
> > >
> > I know nothing about Dtrace, so if something needs to be
> > changed/fixed,
> > someone who understands these things will have to let me know.
> >
> > When I built a kernel with "options KDTRACE_HOOKS" and set
> > dtraceall_load="YES" in /etc/rc.conf,
> > it booted and
> > # dtrace -l
> > - seemed to find the stuff (it's called "dtnfscl", btw).
> >
> > Someone told me that's how you check it's loaded and that's all I
> > know how to do w.r.t. dtrace.
> >
> > If you can test/debug it, that would be great, rick
> 
> Actually, the problem is not with DTrace functioning, but with the
> dtnfsclient.ko module:
> 
> brandon_at_m6500:~$ sudo kldload dtnfsclient
> kldload: can't load dtnfsclient: Exec format error
> 
> brandon_at_m6500:~$ dmesg
> ...
> link_elf_obj: symbol nfsclient_accesscache_flush_done_id undefined
> linker_load_file: Unsupported file type
> ...
> 
> Any hints on debugging undefined symbols?
> 
dtnfsclient.ko is for the old nfs client. You either need to build
a kernel with:
options NFSCLIENT
OR
kldload nfsclient.ko

However, if you want to test dtrace with the new (default for 9) NFS
client, the dtrace module is dtnfscl.ko.

rick
ps: The above only applies to 9/-current, of course.

> -Brandon
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