Re: How to extend a LV with Allocation "PVG-strict/distributed" (377 Views)
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Respected Contributor
P Arumugavel
Posts: 328
Registered: ‎02-16-2010
Message 1 of 6 (417 Views)

How to extend a LV with Allocation "PVG-strict/distributed"

Gurus,

 

I have to extend a lvol which has the allocation policy "PVG-strict/distributed". The VG has two PVGs and each PVG has 4 disks. The LV which needs extend, is sitting on PVG1, and none of the disks in this PVG has free PE's. But the disks in PVG2 has free PE's.

 

I have two questions:

 

1. In this scenario, Can I extend the LV without breaking the allocation policy?

2.  If not, should I add equal number of disks to PVG1 and then extend? - But I got only one disk with larger size.

 

Can you please advise if any possiblities to extend this LV and how

 

Thanks...

Vel

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Acclaimed Contributor
Torsten.
Posts: 23,217
Registered: ‎10-02-2001
Message 2 of 6 (405 Views)

Re: How to extend a LV with Allocation "PVG-strict/distributed"

PVG-strict is used for mirroring.

 

>>none of the disks in this PVG has free PE's. But the disks in PVG2 has free PE's.

 

Does this means at least some LVOLs are not mirrored?

 


Hope this helps!
Regards
Torsten.

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Respected Contributor
P Arumugavel
Posts: 328
Registered: ‎02-16-2010
Message 3 of 6 (398 Views)

Re: How to extend a LV with Allocation "PVG-strict/distributed"

Hello Torsten,

I dont understand why these lvols are PVG-strict, but not mirroed...

No lvols are mirrored...

Thanks,
Vel
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Acclaimed Contributor
Torsten.
Posts: 23,217
Registered: ‎10-02-2001
Message 4 of 6 (393 Views)

Re: How to extend a LV with Allocation "PVG-strict/distributed"

[ Edited ]

What is used as "disk" - a SAN array or real disks?

 

Could you provide an

 

# ioscan -fn

 

and

 

# vgdisplay -v ...

 

# lvdisplay -v ...

 

for the VG/LVOL in question?


Hope this helps!
Regards
Torsten.

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those who understand binary, and those who don't.

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Respected Contributor
P Arumugavel
Posts: 328
Registered: ‎02-16-2010
Message 5 of 6 (377 Views)

Re: How to extend a LV with Allocation "PVG-strict/distributed"

 

Please find the details...

 

Thanks,

Vel

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Advisor
arunaphcl
Posts: 20
Registered: ‎01-28-2013
Message 6 of 6 (257 Views)

Re: How to extend a LV with Allocation "PVG-strict/distributed"

You can just remove PVG strict for the partilar LV and extent it.

 

lvchange -D n -s y  lv name

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