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I've spent most of the weekend trying to install AIX 5.2 on a used IBM
RS/6000 7025 F50 server. Initially there was a hardware problem (loose
cable I think), but finally I got the system up and running.

The machine has 3 x 4.5 Gb disks. When I installed the OS, I selected
all 3 disks for installation. I was rather surprised it never gave me
any chance to select partition names, sizes etc. But once installation
was finished I now have this situation.


# df -g
Filesystem GB blocks Free %Used Iused %Iused Mounted on
/dev/hd4 0.02 0.01 62% 1484 19% /
/dev/hd2 0.93 0.01 99% 26767 11% /usr
/dev/hd9var 0.02 0.01 43% 451 12% /var
/dev/hd3 0.02 0.02 4% 52 1% /tmp
/dev/hd1 0.01 0.01 4% 18 1% /home
/proc - - - - - /proc
/dev/hd10opt 0.02 0.00 100% 584 10% /opt
/dev/cd0 0.56 0.00 100% 292579 100% /mnt

Ignoring the 560 Mb cdrom which I've got mounted on /mnt, the total
disk space allocated seems 1.02 Gb, which is not a lot considering the
disks have a total capacity of 13.5 Gb. I believe the swap partition
is 512 Mb in AIX 5.2, but that still leaves another 12 Gb unaccounted
for.

As someone who knows Solaris reasonably well, this seems odd. Perhaps
someone can explain to me what is happening here.

BTW, does anyone know if the 7025 F50 is a 32 or 64 bit machine?


--
Dr. David Kirkby,
Senior Research Fellow,
Department of Medical Physics,
University College London,
11-20 Capper St, London, WC1E 6JA.
Tel: 020 7679 6408 Fax: 020 7679 6269
Internal telephone: ext 46408
e-mail davek@medphys.ucl.ac.uk

On Sun, 06 Jul 2003 22:01:24 +0100, "Dr. David Kirkby"
<drkirkby@ntlworld.com> wrote:

>I've spent most of the weekend trying to install AIX 5.2 on a used IBM
>RS/6000 7025 F50 server. Initially there was a hardware problem (loose
>cable I think), but finally I got the system up and running.
>
>The machine has 3 x 4.5 Gb disks. When I installed the OS, I selected
>all 3 disks for installation. I was rather surprised it never gave me
>any chance to select partition names, sizes etc. But once installation
>was finished I now have this situation.
>
>
># df -g
>Filesystem GB blocks Free %Used Iused %Iused Mounted on
>/dev/hd4 0.02 0.01 62% 1484 19% /
>/dev/hd2 0.93 0.01 99% 26767 11% /usr
>/dev/hd9var 0.02 0.01 43% 451 12% /var
>/dev/hd3 0.02 0.02 4% 52 1% /tmp
>/dev/hd1 0.01 0.01 4% 18 1% /home
>/proc - - - - - /proc
>/dev/hd10opt 0.02 0.00 100% 584 10% /opt
>/dev/cd0 0.56 0.00 100% 292579 100% /mnt
>
>Ignoring the 560 Mb cdrom which I've got mounted on /mnt, the total
>disk space allocated seems 1.02 Gb, which is not a lot considering the
>disks have a total capacity of 13.5 Gb. I believe the swap partition
>is 512 Mb in AIX 5.2, but that still leaves another 12 Gb unaccounted
>for.
>
>As someone who knows Solaris reasonably well, this seems odd. Perhaps
>someone can explain to me what is happening here.
>
>BTW, does anyone know if the 7025 F50 is a 32 or 64 bit machine?
>
>
>--
>Dr. David Kirkby,
>Senior Research Fellow,
>Department of Medical Physics,
>University College London,
>11-20 Capper St, London, WC1E 6JA.
>Tel: 020 7679 6408 Fax: 020 7679 6269
>Internal telephone: ext 46408
>e-mail davek@medphys.ucl.ac.uk

The F50's we use are 32 bit systems.

Regarding the disk space... you must allocate the available disk to
one or more filesystems.

One way to do that is to use the command "lsvg rootvg" to see what
disks are included. There is a line that shows the total amount of
disk and how much is allocated as well as how much unallocated.

Use the "chfs -a size=+1000000 filesystemname" to add additional
allocation to the desired filesystem. Following this command reissue
the "lsvg" command to see how the values changed. Based on this you
can allocate away until all your disks have been allocated.

Also, if you have more than the rootvg (root volumegroup) you can do
the above steps for each volume group. Be careful about your
allocations because you only have a finite amount to allocate and once
it gone it becomes a different issue.

Good luck.

Bob

Bob Mariotti wrote:
>
> On Sun, 06 Jul 2003 22:01:24 +0100, "Dr. David Kirkby"
> <drkirkby@ntlworld.com> wrote:
>
> >I've spent most of the weekend trying to install AIX 5.2 on a used IBM
> >RS/6000 7025 F50 server. Initially there was a hardware problem (loose
> >cable I think), but finally I got the system up and running.
> >
> >The machine has 3 x 4.5 Gb disks. When I installed the OS, I selected
> >all 3 disks for installation. I was rather surprised it never gave me
> >any chance to select partition names, sizes etc. But once installation
> >was finished I now have this situation.
> >
> >
> ># df -g
> >Filesystem GB blocks Free %Used Iused %Iused Mounted on
> >/dev/hd4 0.02 0.01 62% 1484 19% /
> >/dev/hd2 0.93 0.01 99% 26767 11% /usr
> >/dev/hd9var 0.02 0.01 43% 451 12% /var
> >/dev/hd3 0.02 0.02 4% 52 1% /tmp
> >/dev/hd1 0.01 0.01 4% 18 1% /home
> >/proc - - - - - /proc
> >/dev/hd10opt 0.02 0.00 100% 584 10% /opt
> >/dev/cd0 0.56 0.00 100% 292579 100% /mnt
> >
> >Ignoring the 560 Mb cdrom which I've got mounted on /mnt, the total
> >disk space allocated seems 1.02 Gb, which is not a lot considering the
> >disks have a total capacity of 13.5 Gb. I believe the swap partition
> >is 512 Mb in AIX 5.2, but that still leaves another 12 Gb unaccounted
> >for.
> >
> >As someone who knows Solaris reasonably well, this seems odd. Perhaps
> >someone can explain to me what is happening here.
> >
> >BTW, does anyone know if the 7025 F50 is a 32 or 64 bit machine?
> >
> >
> >--
> >Dr. David Kirkby,
> >Senior Research Fellow,
> >Department of Medical Physics,
> >University College London,
> >11-20 Capper St, London, WC1E 6JA.
> >Tel: 020 7679 6408 Fax: 020 7679 6269
> >Internal telephone: ext 46408
> >e-mail davek@medphys.ucl.ac.uk
>
> The F50's we use are 32 bit systems.

Yes, I found a command to tell me the CPU type (forgot what it was)
and it is indeed 32-bit. That's not a problem - I just wanted to know.

> Regarding the disk space... you must allocate the available disk to
> one or more filesystems.
>
> One way to do that is to use the command "lsvg rootvg" to see what
> disks are included. There is a line that shows the total amount of
> disk and how much is allocated as well as how much unallocated.
>
> Use the "chfs -a size=+1000000 filesystemname" to add additional
> allocation to the desired filesystem. Following this command reissue
> the "lsvg" command to see how the values changed. Based on this you
> can allocate away until all your disks have been allocated.
>
> Also, if you have more than the rootvg (root volumegroup) you can do
> the above steps for each volume group. Be careful about your
> allocations because you only have a finite amount to allocate and once
> it gone it becomes a different issue.
>
> Good luck.
>
> Bob

Thanks a lot.

--
Dr. David Kirkby,
Senior Research Fellow,
Department of Medical Physics,
University College London,
11-20 Capper St, London, WC1E 6JA.
Tel: 020 7679 6408 Fax: 020 7679 6269
Internal telephone: ext 46408
e-mail davek@medphys.ucl.ac.uk

In article <c83a2a1e.0307061859.31fa74a@posting.google.com> , Robert DiRosario wrote:

> Under AIX is there an "easy" way to remove a logical volume (like
> /home) from a volume group (like rootvg) and put it in it's own new
> volume group?

Unmount the filesystem (if any) on the logical volume. Copy the logical volume
with the cplv command to the desired location. Update /etc/filesystems if
necessary. Mount the filesystem (now on the new logical volume).

--
Jurjen Oskam

PGP Key available at http://www.stupendous.org/

Dr. David Kirkby wrote:
> I've spent most of the weekend trying to install AIX 5.2 on a used IBM
> RS/6000 7025 F50 server. Initially there was a hardware problem (loose
> cable I think), but finally I got the system up and running.
>
> The machine has 3 x 4.5 Gb disks. When I installed the OS, I selected
> all 3 disks for installation. I was rather surprised it never gave me
> any chance to select partition names, sizes etc. But once installation
> was finished I now have this situation.
>
>
> # df -g
> Filesystem GB blocks Free %Used Iused %Iused Mounted on
> /dev/hd4 0.02 0.01 62% 1484 19% /
> /dev/hd2 0.93 0.01 99% 26767 11% /usr
> /dev/hd9var 0.02 0.01 43% 451 12% /var
> /dev/hd3 0.02 0.02 4% 52 1% /tmp
> /dev/hd1 0.01 0.01 4% 18 1% /home
> /proc - - - - - /proc
> /dev/hd10opt 0.02 0.00 100% 584 10% /opt
> /dev/cd0 0.56 0.00 100% 292579 100% /mnt
>
> Ignoring the 560 Mb cdrom which I've got mounted on /mnt, the total
> disk space allocated seems 1.02 Gb, which is not a lot considering the
> disks have a total capacity of 13.5 Gb. I believe the swap partition
> is 512 Mb in AIX 5.2, but that still leaves another 12 Gb unaccounted
> for.
>
> As someone who knows Solaris reasonably well, this seems odd. Perhaps
> someone can explain to me what is happening here.

Do an "lsvg rootvg" and look at all the free PPs that do not belong
to any logical volume. These can be added to any of the existing
logical volumes as needed.

Chris Mattern

"Dr. David Kirkby" <drkirkby@ntlworld.com> wrote in message news:<3F088E24.28419187@ntlworld.com>...
> I've spent most of the weekend trying to install AIX 5.2 on a used IBM
> RS/6000 7025 F50 server. Initially there was a hardware problem (loose
> cable I think), but finally I got the system up and running.
>
> [...]
>
> --
> Dr. David Kirkby,

You want to have a look at the LVM. This is one the nicest feature of
AIX which allows you to move, configure, enlarge your logical
volumes/filesystems. The following link is to the concepts manual
which illustrates volume groups (groups disks), logical volumes
(logical partitions withing a VG) and filesystems (and more). AIX
does not use the partitionning concepts like Solaris (or Linux for
that instance) does.

http://publib16.boulder.ibm.com/pser...mnconctfrm.htm

As a quick answer, try these:
# lsvg
# lsvg rootvg
# lsvg -l rootvg


Mors.