topic Re: Physical Disk information in Operating System - HP-UX

Physical Disk information

Mark Nelson_2 — Fri, 06 Dec 2002 17:11:00 GMT

Me: limited unix abilities. Enough to be dangerous but striving to learn more.

Problem:
Need to find out what the physical sizes are of the disks installed internally to this HP 9000 HP-UX 11i system and what is installed in the external array with out downing the system.

bdf returns me wonderful lvol information but I need physical disk size info.

What command(s) can I run to get this information?

Thank you in advance!

Mark Nelson

Re: Physical Disk information

S.K. Chan — Fri, 06 Dec 2002 17:15:07 GMT

For standalone disk. First find out the device path ..
# ioscan -fnC disk
Then just run .. (example say c2t6d0)
# /etc/diskinfo /dev/rdsk/c2t6d0

For diskarray, usually the above reflects the size of a LUN, not necessarily the size of individual disk in the array.

Re: Physical Disk information

Stefan Farrelly — Fri, 06 Dec 2002 17:15:10 GMT

SAM will tell you. run sam and go to disk and filesystems.

or; ioscan -fknCdisk

will list all disk devices, to see the size of each; diskinfo /dev/rdsk/cxxxxxx

Re: Physical Disk information

melvyn burnard — Fri, 06 Dec 2002 17:16:32 GMT

use diskinfo on hte raw physical device
e.g. diskinfo /dev/rdsk/c0t6d0
should give your root disk.
dont use the vgxx files.
to look what device files to use, do
ioscan -funCdisk and this will reveal all hte device files for your disks

Re: Physical Disk information

James R. Ferguson — Fri, 06 Dec 2002 17:20:32 GMT

Mark:

Use:

# ioscan -fnC disk

...to identify physical devices

# diskinfo /dev/rdsk/cXtYdZ

...will return physical size

# pvdisplay /dev/dsk/cXtYdZ

...will show used and free amount of disk associated with LVM ('pvcreate'd)

# vgdisplay -v

...will show all LVM volume groups with logical volumes *and* associated physical devices *including* which devices (disk) are alternate (pv)links.

# bdf

...summarizes mountpoints and logical volumes

Regards!

...JRF...

Re: Physical Disk information

MANOJ SRIVASTAVA — Fri, 06 Dec 2002 17:21:32 GMT

ioscan
sam--->disks and filesystems
print_manifest ( if you have ignite )
xstm , or cstm

Manoj Srivastava

Re: Physical Disk information

Robert-Jan Goossens — Fri, 06 Dec 2002 17:30:47 GMT

Hi Mark,

# ioscan -fnCdisk
disk 2 0/0/2/0.2.0 sdisk CLAIMED DEVICE SEAGATE ST39103LC
/dev/dsk/c2t2d0 /dev/rdsk/c2t2d0
disk 3 0/4/0/0.3.0 sdisk CLAIMED DEVICE SEAGATE ST318436LC
/dev/dsk/c5t3d0 /dev/rdsk/c5t3d0

ST39103LC for instance is

ST = Seagate Technology
3 = 3.5 inch
9103 = size in mb

ST318436LC

ST = Seagate Technology
3 = 3.5 inch
18436 = size in mb

Kind regards,

Robert-Jan.

Re: Physical Disk information

Mark Nelson_2 — Fri, 06 Dec 2002 17:36:50 GMT

Wow!

Thank you all very much.
The more interesting part for me was that I was actually able to understand your replies and apply them!

Its amazing what hands on and needing know will teach ya!

Again, thanks for all the replies!

Mark Nelson