From: Jonathan Williams (jonathw@shubertorg.com)
Date: Mon Dec 09 2002 - 16:27:14 EST
Ok...tons and tons of responses so far. Everybody agrees on one thing (even
several HP people): it is not unsupported to have other filesystems on your
boot disk. It may be possible that if your boot disk is mirrored with LSM and
you have other filesystems in a diskgroup other than rootdg on it--that may be
unsupported. I'm not sure how to confirm this being it was the HP phone support
LSM people that told me that what I was doing was wrong. But in any case, being
we are getting LSM off of the boot disk--we might not change anything about the
partitions. I won't post a summary just yet because we are still deciding what
to do exactly. But whether we re-organize or not, I will post a summary with
what we did do--or would have done.
I did get a bunch of conflicting responses though--if I were to go ahead with
the re-organizing. Several people said that I should go ahead with having the
two separate partitions for the swap space like swapdevice=/dev/disk/dsk0b,
/dev/disk/dsk0h. But then I got a bunch of responses that said doing this was a
bad idea. Here is a quote from the good Doctor Blinn:
"What you do NOT want to do is have two swap areas on the same disk,
or two AdvFS volumes in the same domain on the same disk. "
Dr. Blinn has never steered me wrong in the past, so I'm apt to go with what he
says.
Anyway...a full summary will be sent eventually.
Jonathan Williams
Unix Systems Administrator
The Shubert Organization, Inc.
----- Original Message -----
From: "Jonathan Williams" <jonathw@shubertorg.com>
To: "tru64 managers" <tru64-unix-managers@ornl.gov>
Sent: Monday, December 09, 2002 12:32 PM
Subject: Disk Partitions
> ES40s, Tru64 5.1 (patch 5) and 5.1a -- ES45s, Tru64, 5.1a
> I'm trying to cleanup some things that the admin I replaced had done wrong
(and
> HP was very unhappy with ME...even though I told them the HE did it!!).
> Anyway...the problem that I'm trying to fix is how he was using the boot disk
on
> our systems. He had root, usr, and swap which is fine. But he also had
another
> filesystem (that we use to store software for our production machines) on the
> boot disk using partition H. Of course I followed his lead when I was setting
> up any additional systems we received. Apparently it is "unsupported" to have
> anything other than root, usr, and swap on the boot disk. I have other disks,
> and have no problem recreating this filesystem elsewhere. Of course that
would
> leave a bunch of unused space on the boot disk. So my boss wants to use that
> space up.
>
> Basically, what I want to do is add to the size of the /usr filesystem, and
then
> whatever is left give to swap. My question is how to best go about this. We
> are no longer going to use LSM on the boot disk, so I figure I need to use the
> actual disk partitions. Here is what I have right now:
>
> dsk0:
> a = root = 262 MB
> b = swap = 3 GB
> g = usr = 2.1 GB
> h = "star" = 12.2 GB
>
> And this is what I want:
>
> a = root = 262 MB
> b = swap = 14.2 GB
> g = usr = 3.1 GB
>
> So can I redo the partitions of the disk, and just add them in like I have
> above...or should I just split the H partition up into two pieces (like h=11.2
> GB and e=1 GB), and then do an addvol to add the 1 GB to usr, and also add a
> second partition to the swapdevice
> (i.e. swapdevice=/dev/disk/dsk0b, /dev/disk/dsk0h)
>
> I'm just not sure which is the "better" way...and maybe there is even another
> way that would be even more better.
>
> Anyway...TIA
>
> Jonathan Williams
> Unix Systems Administrator
> The Shubert Organization, Inc.
>
>
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