I need to install a number of patches that will require me to extend
the /var volume group. However, I do not want to damage/remove any
patches/software already installed into /var..... I believe the steps
are as follows:

==============================
1. Goto single user mode
2. unmount /var
3. extend the /var volume group using the following commands:

lvextend -L 1100 /dev/wutever
extendfs /dev wutever
4. mount /var
==============================

My 2 questions are this:

1. Is this the proper procedure?

2. Does lvextend and/or extendfs destroy any data? I have a number of
patches and software tools already installed and I don't want to
damage anything in /var.

Thanks in advance for your comments:
sgrow23

"sgrow23" <sgrow23@hotmail.com> schreef in bericht
news:1e08111e.0306281106.2e26d2f1@posting.google.c om...
> I need to install a number of patches that will require me to extend
> the /var volume group. However, I do not want to damage/remove any
> patches/software already installed into /var..... I believe the steps
> are as follows:
>
> ==============================
> 1. Goto single user mode
> 2. unmount /var
> 3. extend the /var volume group using the following commands:
>
> lvextend -L 1100 /dev/wutever
> extendfs /dev wutever
> 4. mount /var
> ==============================
>
> My 2 questions are this:
>
> 1. Is this the proper procedure?
>
> 2. Does lvextend and/or extendfs destroy any data? I have a number of
> patches and software tools already installed and I don't want to
> damage anything in /var.
>
> Thanks in advance for your comments:
> sgrow23

If you are in doubt, always make a tape backup of the filesystem.

"sgrow23" <sgrow23@hotmail.com> wrote in message
news:1e08111e.0306281106.2e26d2f1@posting.google.c om...
> I need to install a number of patches that will require me to extend
> the /var volume group. However, I do not want to damage/remove any
> patches/software already installed into /var..... I believe the steps
> are as follows:
>
> ==============================
> 1. Goto single user mode
> 2. unmount /var
> 3. extend the /var volume group using the following commands:
>
> lvextend -L 1100 /dev/wutever
> extendfs /dev wutever
> 4. mount /var
> ==============================
>
> My 2 questions are this:
>
> 1. Is this the proper procedure?

Yes. There are alternatives to extending /var also
>
> 2. Does lvextend and/or extendfs destroy any data? I have a number of
> patches and software tools already installed and I don't want to
> damage anything in /var.

No it does not.
>
> Thanks in advance for your comments:

You might wish to cleanup old patches (which precludes their being removed)
but if they have been installed for a while, there is no problem doing this.
you would be amazed at how much space you can gain.

You can put parts of /var on a separate logical volume. for example
/var/adm/sw can be a separate file system. Use "du -s" on directories to see
which ones are the biggest. I recommend non-online-active subdirectories
such as /var/adm/sw rather than online-active ones such as /var/tmp being on
separate filesystems as their temporary loss doesn't preclude a working
system.

Always backup on a regular basis. Make a new recovery system after major
patch installs.

John
> sgrow23

> You might wish to cleanup old patches (which precludes their being
removed)
> but if they have been installed for a while, there is no problem doing
this.
> you would be amazed at how much space you can gain.

Good idea. The command is

cleanup -c 1 # Check if the option is correct.

>
> You can put parts of /var on a separate logical volume. for example
> /var/adm/sw can be a separate file system. Use "du -s" on directories to
see
> which ones are the biggest. I recommend non-online-active subdirectories
> such as /var/adm/sw rather than online-active ones such as /var/tmp being
on

We are starting to put /var/tmp in its own filesystem these days, still in
vg00 however.

Thanks Guys for the response... Just a couple of more followup
questions:

1. If this is not the correct procedure, can you please explain:
Alternatives to extending /var

2. Please explain how I can use the "cleanup" command to remove
useless and old patches

Thanks in advance,
sgrow23

To cleanup old patches

cd /var/adm/sw/save
swmodify -x patch_commit=true PH*

To get more space in /var without going to single user.

du -ks /var/*
locate the most used directories that can be missed for some time
make a new file system mount it for example.

Stop swagentd
mount the new file system under /var/adm/sw_new
mv /var/adm/sw/* /var/adm/sw_new
mv /var/adm/sw_new /var/adm/sw

The size of the new sw directory should be the current size from du -ks and
some extra space as told you be the swinstall log.

have fun, Paul

P.S. It's a good idea to have a current backup and to make a make_recovery
tape first.

Perhaps more specifically:

lvextend -L 1100 /dev/vg00/lvol4
extendfs /dev/vg00/rlvol4

***

noting that the "4" in lvol4 is an example only (use 'bdf' to be sure), the
"1100" needs to be double checked as to the accuracy of your intent:

vgdisplay -v /dev/vg00|more
(PEs are 4M on my system - don't know if that is "standard" - check unused
PEs for the vg, and assigned PEs for the /var lv)

'man lvextend' for diffs between -L and -l options.....choose appropriately.

At single user mode, if you cannot 'umount /var', use the command 'fuser -ku
/dev/vg00/lvol4' to kill processes that may be lingering .......

OR

"reboot / esc (esc, esc) / choose disk / DO interact with ISL". Guaranteed
no lingering processes this way.

note the 'r' in extendfs command (/dev/vg00/rlvol)

Do not assign ALL unassigned PEs.....you may be sorry the next time you
upgrade/patch/etc.!


"sgrow23" <sgrow23@hotmail.com> wrote in message
news:1e08111e.0306281106.2e26d2f1@posting.google.c om...
> I need to install a number of patches that will require me to extend
> the /var volume group. However, I do not want to damage/remove any
> patches/software already installed into /var..... I believe the steps
> are as follows:
>
> ==============================
> 1. Goto single user mode
> 2. unmount /var
> 3. extend the /var volume group using the following commands:
>
> lvextend -L 1100 /dev/wutever
> extendfs /dev wutever
> 4. mount /var
> ==============================
>
> My 2 questions are this:
>
> 1. Is this the proper procedure?
>
> 2. Does lvextend and/or extendfs destroy any data? I have a number of
> patches and software tools already installed and I don't want to
> damage anything in /var.
>
> Thanks in advance for your comments:
> sgrow23