topic Re: how to check the size of vg00 in Operating System - HP-UX

how to check the size of vg00

Karthick K S — Thu, 27 Oct 2005 01:50:10 GMT

Hi all,

I have vg00 vg i want to check the disk space of this vg,pls tell how to check

Re: how to check the size of vg00

Arunvijai_4 — Thu, 27 Oct 2005 01:54:56 GMT

#vgdisplay

-Arun

Re: how to check the size of vg00

Luk Vandenbussche — Thu, 27 Oct 2005 01:55:09 GMT

Hi,

vgdisplay -v vg00

Free space (MB) = free PE x 4 PE size

Check this for each Physical volume

LV size in MB is given for each lvol

If used PV = 2 or greater, then you have a mirrored disk

Re: how to check the size of vg00

Mel Burslan — Thu, 27 Oct 2005 01:55:25 GMT

vgdisplay vg00

look at the output and note these values

PE size
Total PEs

multiply these two numbers the result is tha total capacity of the vg00 in megabytes.

if you want to calculate free space, instead of Total PEs, use Free PEs.

Hope this helps

Re: how to check the size of vg00

Rajesh SB — Thu, 27 Oct 2005 01:55:51 GMT

Hi,

Just run the cmd like

# vgdisplay vg00
--- Volume groups ---
VG Name /dev/vg00
VG Write Access read/write
VG Status available
Max LV 255
Cur LV 6
Open LV 6
Max PV 16
Cur PV 1
Act PV 1
Max PE per PV 4350
VGDA 2
PE Size (Mbytes) 8
Total PE 4340
Alloc PE 4340
Free PE 0
Total PVG 0
Total Spare PVs 0
Total Spare PVs in use 0

In the output observe for Alloc PE (eg:4340), and PE Size (Mbytes).
Caluclate now
actual size=Alloc PE * PE Size (Mbytes)

CHeers,
Rajesh

Re: how to check the size of vg00

Devender Khatana — Thu, 27 Oct 2005 01:56:31 GMT

Hi,

#vgdisplay -v /dev/vg00

will give you all details.

Check

PE Size (Mbytes) 16
Total PE 17496
Alloc PE 14256
Free PE 3240

Total size of vg00 is

=Total PE * PE Size

HTH,
Devender

Re: how to check the size of vg00

Rajesh SB — Thu, 27 Oct 2005 01:59:33 GMT

Just a correction here.
Look for Total PE and PE Size (Mbytes)

Actual Size = Total PE * PE Size (Mbytes)

Regards,
Rajesh

Re: how to check the size of vg00

Orhan Biyiklioglu — Thu, 27 Oct 2005 01:59:53 GMT

vgdisplay vg00 | awk '/PE Size $Mbytes$/{s=$4}; /Free PE/{f=$3}; END{print s*f" Mbytes free space available on volume group."}'

vgdisplay vg00 | awk '/PE Size $Mbytes$/{s=$4}; /Total PE/{f=$3}; END{print s*f" Mbytes total space on volume group."}'

hth

Re: how to check the size of vg00

Adisuria Wangsadinata_1 — Thu, 27 Oct 2005 02:00:33 GMT

Hi,

Use 'vgdisplay' command :

# vgdisplay /dev/vg00

--- Volume groups ---
VG Name /dev/vg00
VG Write Access read/write
VG Status available
Max LV 255
Cur LV 14
Open LV 14
Max PV 16
Cur PV 2
Act PV 2
Max PE per PV 4384
VGDA 4
PE Size (Mbytes) 32
Total PE 8748
Alloc PE 1830
Free PE 6918
Total PVG 0
Total Spare PVs 0
Total Spare PVs in use 0

From the example above, the size of vg00 is [Alloc PE x Free PE] = 1830 x 32 = 58560 Mbytes.

You need also to check if the vg00 is mirrored or not. Check by using lvdisplay onto the logical volume at vg00.

# lvdisplay /dev/vg00/lvol1

If mirrored, you need to devide it by the number of mirror + 1.

Let say if from lvdisplay, you find mirror copies is 1, so the vg00 size above is 58560 / (1+1) = 58560 / 2 = 29280 MBytes.

The condition above if all logical volume in vg00 is mirrored.

Hope this information can help you.

Cheers,
AW

Re: how to check the size of vg00

Karthick K S — Thu, 27 Oct 2005 03:36:26 GMT

how to check free space

Re: how to check the size of vg00

Joseph Loo — Thu, 27 Oct 2005 03:40:59 GMT

hi,

adi should have explain how to retrieve free space from the output of vgdisplay:

# vgdisplay -v vg00
refer to Free PE where PE is in extents, thus to convert to MB, multiply by PE Size.

http://docs.hp.com/en/B2355-90692/vgdisplay.1M.html

regards.

Re: how to check the size of vg00

AwadheshPandey — Thu, 27 Oct 2005 03:52:50 GMT

link:
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=763059&admit=-682735245+1130402918678+28353475

view attached documents in this thread.

Solution to ur lvm issues

Awadhesh

Re: how to check the size of vg00

Karthick K S — Thu, 27 Oct 2005 03:55:17 GMT

but in my server

VG Name /dev/vg00
VG Write Access read/write
VG Status available
Max LV 255
Cur LV 12
Open LV 12
Max PV 16
Cur PV 2
Act PV 2
Max PE per PV 4350
VGDA 4
PE Size (Mbytes) 8
Total PE 8680
Alloc PE 8680
Free PE 0
Total PVG 0
Total Spare PVs 0
Total Spare PVs in use 0

see Free PE is 0

Re: how to check the size of vg00

AwadheshPandey — Thu, 27 Oct 2005 03:57:03 GMT

See attached doc

Solution to ur lvm issues

Awadhesh

Re: how to check the size of vg00

Joseph Loo — Thu, 27 Oct 2005 03:57:34 GMT

hi,

this would mean u have allocated all your extents from that volume group, vg00.

use bdf to check the available and used file system, if that is what u want to know.

regards.

Re: how to check the size of vg00

Joseph Loo — Thu, 27 Oct 2005 03:57:51 GMT

hi,

this would mean u have allocated all your extents from that volume group, vg00.

use "bdf" command to check the available and used file system, if that is what u want to know:

# bdf

regards.

Re: how to check the size of vg00

Devender Khatana — Thu, 27 Oct 2005 04:13:55 GMT

Hi,

You can see the free space allocated to file systems using bdf command.

If you wish to see unallocated space in the vg then Free PE multiplied by PE Size will get that fot you. Allthough here as the free PE is zero, you do not have any space in the VG unallocated.

HTH,
Devender

Re: how to check the size of vg00

AwadheshPandey — Thu, 27 Oct 2005 05:27:37 GMT

use df and du command to check free space,
man df
man du
u can use
man lvdisplay
man vgdisplay
man pvdisplay

Awadhesh

Re: how to check the size of vg00

Muthukumar_5 — Thu, 27 Oct 2005 05:34:06 GMT

Your VG status is as,

VG Status available

Total PE 8680
Alloc PE 8680
Free PE 0

Free PE = Total PE - Alloc PE
0 = 8680 - 8680

It is stating correct information.

# bdf will give file system usage statistics.

My VG status is as,

Total PE 4374
Alloc PE 639
Free PE 3735

They are calculated as per above calculation.

-Muthu

Re: how to check the size of vg00

Alzhy — Thu, 27 Oct 2005 08:10:50 GMT

Use the attached script - which I got from the forums and mod'ed.