Re: [Condor-users] AFS & Condor

[Franco Milicchio <milicchio@xxxxxxxx>]

Steffen Grunewald wrote:
> Nice, but what's the point of having it kernel-dependent?
> AFAIK, Condor is dependent on glibc versions (since standard universe
> libs would replace it) and thus on Linux distros/versions

Nothing except having @sys working on different kernels, naturally, the 
binary used will be the same, probably a static distribution.

> YOu really want to have transient data on AFS?
> My guts tell me that there'd be better ideas...

Do you suggest a local scratch partition writable by anyone in a group? 
I have one of course :)

> Obviously there have been requests for AFS support, but if you read the
> corresponding parts of section 3.3 in the manual (USE_AFS=...) you might
> get the impression that it's no good for everything

Of course, but a suggestion doesn't mean it won't work :) I use 
mailboxes on afs, and they work even though they're not suggested to be 
there.

> > From reading the docs, it's better to run the daemons *not* as root...

Of course, that's why on a stand-alone aix I have a condor user, I was 
just thinking about letting users start and stop deamons if they need. 
They'll be instructed about a good behaviour of course!

> AFS is powerful indeed, but
> - standard universe doesn't rely on shared resources at all
> - there's NFS

I have more than 100 users, 80 machines, and SSO is something users want 
to have, have the same desktop everywhere from linux to osx. NFS is a 
shared resource while AFS is a real distributed file system.

> what's the point of using AFS for everything Condor? (It's probably OK
> for the RELEASE_DIR, but everything else I would not put onto AFS. Try
> to convert me.)

The reason is this: do not bother about location since your jobs will be 
usually of /afs/cell.name/usr/username, no matter what machine you're 
using (user's point of view) --- another is, having a working 
infrastructure used for everything (web, mail, nntp...) based on 
K5/LDAP, and do not bother about new users, new stuff to install on each 
workstation (@sys is powerful).

> > No keyboard found. Press F1 to continue...
> > (Almost every BIOS available in this world... even yours!)
>
> Sure... had a good laugh the first time...

Yeah... probably adding just ``Attach one and'' before ``Press'' would 
have worked it out better... :)

--
Franco Milicchio <mailto:milicchio@xxxxxxxx>

No keyboard found. Press F1 to continue...
(Almost every BIOS available in this world... even yours!)