[OpenAFS] Oddity with OpenAFS 1.6.0 on MacOS 10.6.8 +

[Derrick Brashear]

I reproduced this on Thursday with Lion, but hadn't properly investigated it=
 yet

Derrick


On Oct 23, 2011, at 21:53, Garance A Drosihn <drosih@rpi.edu> wrote:

> I thought I'd write up a minor oddity that I noticed recently.  I
> don't know if it's significant, or just a random thing which only
> popped up on my system.
>=20
> I installed OpenAFS-1.6.0-Snowleopard on my MacOS 10.6.8 system
> back on September 2nd.  The system is a 2.8 GHz Quad-Core Xeon
> with 12-GB of RAM.  Everything seemed fine.
>=20
> I kept running (without needing a reboot) until October 14th.  At
> that point I rebooted to install a variety of MacOS updates.  This
> included Safari 5.1.1, MacOS X 10.6.8 Supplemental update, and
> Security Update 2011-006 (all of which require a reboot).  As long
> as I was going to reboot anyway, I installed updates for a few other
> things.  Probably the only thing of interest there was installing a
> new version of LittleSnitch and Xcode 4.2 with iOS 5 SDK.
>=20
> Shortly after the reboot, I noticed the CPU's were busy even when I
> wasn't doing anything.  I checked into that, and found my old friend
> 'mds' (MetaData Server for Spotlight) was chewing up the CPU.  I did
> not think too much of this, given that I had just replaced several
> gigabytes of files (due to Xcode alone, never mind everything else!).
>=20
> I have LittleSnitch running to track outgoing connections, and a few
> days later I finally noticed that the 'mds' process was constantly
> doing some I/O to our AFS fileservers.  I'm pretty much certain that
> it hadn't been doing that before the reboot.  I dug up an old article
> which suggested that the way to get 'mds' to ignore /afs was to do:
>=20
>   sudo mdutil -i off -v /afs
>=20
> I did that, and the I/O from 'mds' to our afs servers stopped.  I
> now notice that there's still a small but steady stream of I/O to
> our file servers, and based on tcpdump I think those are all
> afs3-callbacks.  I'm going to reboot now, and hopefully those will
> stop and things will be back to normal.
>=20
> So the questions after all that are:  What generally prevents 'mds'
> from trying to index all of AFS space?  And has anyone else noticed
> a change to that behavior on MacOS 10.6?
>=20
> One more item which might be significant:  Apple's new "Mac App Store"
> uses spotlight to find where applications have been installed.  I do
> remember that sometime in the last few weeks I noticed that the MAS
> was confused about whether it had installed two applications which I
> had bought from the store.  In the process of clearing that up, I'm
> pretty sure I was playing around with turning indexing off-and-on
> for the filesystem partition which is '/' (done because the apps were
> under /Applications).  Perhaps it was my fiddling with that which
> effectively turned on 'mds' for the /afs directory?
>=20
> --=20
> Garance Alistair Drosehn                =3D     drosih@rpi.edu
> Senior Systems Programmer               or   gad@FreeBSD.org
> Rensselaer Polytechnic Institute;             Troy, NY;  USA
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