How do I determine Available Disk space?

[Donald O'Brien]

I have been used to running other UNIX Flavors, but now I have to upgrade several E55s & D250s to HPUX 11.00 from HPUX 10.20.

As usually, one of the prerequisites is to make sure there is enough free diskspace. uhm, err. How do I do this HPUX? I have been able via SAM to see the total size of the disk on one system (a 2GB & 4GB disk in it). And I can see how much space is used via each filesystem on those disks. But is there a command that I can run which will just give me a quick summery of each disk.

ex. XXX MB total diskspace
XXX MB used
XXX MB Free

Sorry for such a newbie question.

Thanks again,

Donald O'Brien

[Rodney Hills]

Donald,

Either "bdf" or "df" are the common utilities.

"du" is good for getting file space utilization on per directory basis.

-- Rod Hills

[A. Clay Stephenson · Accepted solution]

Probably about as easy as it gets is 'vgdisplay -v vg00'. You need to repeat for each volume group defined.

[A. Clay Stephenson]

By the way, I should really mention that you don't care about how much used/free space there is because you REALLY don't want to upgrade; you want to do a cold install. The 10.20 to 11x upgrade has a very low (approaches zero) success rate.

[Craig Rants]

To add to Clay's comments
vgdisplay vgXX | grep -i Free
vgdisplay vgXX | grep -i Size

take the results of column two and multiply ie.

2409 free PE x 4 PE size = approx 9GB Free.

GL,
C

[James R. Ferguson]

Hi Donald:

There are several ways to ascertain disk space:

# bdf #...shows utilization at the mounted filesystem level

# pvdisplay [-v] /dev/dsk/cXtYzZ ...with the '-v' option you will see the logical volume mappings

# vgisplay [-v] /dev/vgXX

Note that an 'extent' is often 4MB in size, although on large disks (e.g >= 36GB) this increases to 8MB or larger. The 'pvdisplay' output includes the extent size.

Regards!

...JRF...

[Sajid_1]

I would not suggest you to upgrade the OS, but do a cold install (fresh installation) of 11.0. You don't have to worry about the free space, but determine that the root disk has enough totall space on it. A 4GB disk will be good to go for a normal procedure.

To answer your question, these are the commands you should use:
# bdf
# sam - disk devices
# vgdisplay -v vg_name
# lvdisplay -v lv_name

In the last two commands, find the total PE, free PE and multiply it with the PE size to get the disk space details

[James R. Ferguson]

Hi (again) Donald:

Another useful tool is Ignite's 'print_manifest'. In reality, because you already routinely create Ignite recovery tapes (at least, I hope you do), you have the 'print_manifest" gratuitously.

Whenever you run 'make_tape_recovery' a new manifest is created. This document gives a quick, but very good LVM summary of your disk configuration:

# /var/opt/ignite/recovery/latest/manifest

Regards!

...JRF...

[Donald O'Brien]

Thanks to everyone for the quick replies.

I luckily have a "test" system to try this out on first before going head deep into the 40+ system that I need to upgrade. I will try both "cold" and "upgrade". I'll keep my fingers crossed on the upgrade, but will expect to have to do a "cold-install".

For some reason, Ignite is not on the 10.20 installation of these machines. I'll see if I can get my hands a 10.20 CD and install it for backup purposes before going to 11.00.

I was looking for the vgdisplay command, so thanks for all that replied.

Donald O'Brien

(now if I could only go back and correct those terrible typos in the orginal post :D )

[James R. Ferguson]

Hi Donald:

While Ignite can be obtained from a current Application CDROM, it is better (and just as easy) to download a current version.

Software and documentation can be obtained here:

http://www.software.hp.com/products/IUX/download.html

Use 'swinstall' to install the tar depot from the download. No reboot is required and man pages will be installed.

Regards!

...JRF...

[Patrick Wallek]

To get Ignite/UX, it is usually better to download the latest greatest version from HP.

The link is:

http://software.hp.com/products/IUX/

[Mladen Despic]

Donald,

Try the attached script.

Mladen

[Donald O'Brien]

Slick Script. Thanks yet again.

I have downloaded Ignite and will install it.

Donald O'Brien