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MSA 1500cs New Disk Extension On HPUX 11.

 
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Gheevar
Occasional Contributor

MSA 1500cs New Disk Extension On HPUX 11.

We have a MSA1500 attached to a HPUX 11i rp Server with 1 enclosure.This enclosure has 14 disk in which 11 disk are configured as LUN 0 and other 3 are configured as LUN 1 . The LUN 0 is was going to full .. so we buy new enclousre with 7 disk and attached to the controller.

Our Support Company done the expansion and extension of the new disk .

The use ACU-CLI for the expansion and extension.

First they add all 7 disk to the LUN 0 and this works find and the size is expanded to what we needed .

Then they run the extension command also and also it was fine

But when we mount the Volume group to the system it was not extended

I check vgdisplay for free PE but there was few free PE

When i check from the CLI for the controller the size is the expanded size ...

So please help me in this regards
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Torsten.
Acclaimed Contributor
Solution

Re: MSA 1500cs New Disk Extension On HPUX 11.

What 11i version do you run?

11iv1, v2 or v3?

The problem is LVM, it is managing the physical disk by creating physical extends and map them to logical extends.

Once this is done, it is fixed.

Now the disk is growing, but LVM does not create more physical extends, hence the space remains the same.

In 11.23 and 11.31 you can adjust this via vgmodify command, but you cannot do anything in 11.11. Your only choice in this case is to backup data, delete the VG, re-create the VG and restore your data.

Much better solution would be to simple create a new LUN and extend the existing VG.

Hope this helps!
Regards
Torsten.

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Gheevar
Occasional Contributor

Re: MSA 1500cs New Disk Extension On HPUX 11.

Thanks for the Reply ..

Its HPUX 11.11

How we can know the the LVM does not create more physical extends

What is the MAX number for PE


Torsten.
Acclaimed Contributor

Re: MSA 1500cs New Disk Extension On HPUX 11.

It's a fact. LVM just won't do it.

Hope this helps!
Regards
Torsten.

__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.

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Torsten.
Acclaimed Contributor

Re: MSA 1500cs New Disk Extension On HPUX 11.

The LVM layout is created by "pvcreate" command. Once written it is fixed.

The "vgmodify" command can change this, but it is not available for 11.11.

Hope this helps!
Regards
Torsten.

__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.

__________________________________________________
No support by private messages. Please ask the forum!

If you feel this was helpful please click the KUDOS! thumb below!   
Gheevar
Occasional Contributor

Re: MSA 1500cs New Disk Extension On HPUX 11.

Thanks for the repky it was a gr8 help for me .. i will try vgmodify first..if it work i am happy otherwise i will recreate it .