[525] in Info-AFS_Redistribution
Re: rs_aix31 server hints?
daemon@ATHENA.MIT.EDU (Bob Andrews)
Wed Jan 15 15:18:13 1992
From: bob@ibmpa.awdpa.ibm.com (Bob Andrews)
To: paw@rigel.dartmouth.edu
Date: Wed, 15 Jan 92 10:27:47 PST
Cc: info-afs@transarc.com
In-Reply-To: <9201151410.AA13915@northstar.dartmouth.edu>; from "paw@rigel.dartmouth.edu" at Jan 15, 92 9:10 am
paw@rigel.dartmouth.edu writes:
> To: info-afs@transarc.com
> Subject: rs_aix31 server hints?
> Date: Wed, 15 Jan 92 09:10:43 +22322538
> From: paw@rigel.dartmouth.edu
>
>
> Hey all -
>
> I'm just about to get a new AFS server - an RS/6000 32H with
> 1.6Gb of disk (among 3 drives). I've been looking more seriously
> into the AIX 3.1 logical/physical volume stuff (all my 32H
> clients have only a single disk), and am wondering whether it's
> worth it to muck about having logical vols spanning physical ones,
> etc.
>
> So - do you (who are running RS/6000 AFS file servers) do
> anything funky with pv's, lv's, and partitions, or do you just
> play it "straight" and have one (or more) partitions/disk?
>
> Curiously,
>
> Pat
>
I find it extremely convenient to be able to have really big filesystems
on rs_aix31 servers. I think the largest you can have is 2GB, so I
combine 3 670 MEG disks into a single volume group, with only one
logical volume in it, taking up all the space. Larger filesystems means
less moving volumes around to manage space.
There is a drawback here. If anything happens to any one of those three
drives, you effectively lose the data from all three drives. Maybe
something could be done to recover 2/3's of the data, but it's probably
not trivial.
I don't recommend taking all your disks (if you have more than 2GB's worth),
combining them into a single volume group, and make 2GB logical volumes
from that. You become more vulnerable to a disk failure (any one failing
takes all your logical volumes down), and gain very little additional
large filesystem conveneience.
Bob
