[linux-lvm] Strange reduction in Total PE upon multiple vgred uce+vgextend

Poul Petersen petersp at roguewave.com
Wed Jan 18 00:52:43 UTC 2006


> WHATS_NEW:
>   Version 2.01.10 - 3rd May 2005
>   ==============================
> ...
>     Reinstate full PV size when removing from VG.

	Ah, fair enough. I upgraded to LVM-2.01.15 but now I have a related
problem. If I force the physical volume size using --setphysicalvolumesize,
then doing vgreduce/vgextend resets it to the maximum size: 

# pvcreate -f -M2 --setphysicalvolumesize=10000 /dev/sd[pq]1
  Physical volume "/dev/sdp1" successfully created
  Physical volume "/dev/sdq1" successfully created

# vgcreate vg20 -s32M -M2 /dev/sdp1 /dev/sdq1
  Volume group "vg20" successfully created

# vgdisplay -v vg20
<cut>
  --- Physical volumes ---
  PV Name               /dev/sdp1     
  PV UUID               8H24mH-k5TA-n3O0-sQUF-e8sB-dteF-luHLJF
  PV Status             allocatable
  Total PE / Free PE    312 / 312
   
  PV Name               /dev/sdq1     
  PV UUID               M13ArL-7b9d-SvLJ-ik6H-pRYO-hqgg-WWaPRP
  PV Status             allocatable
  Total PE / Free PE    312 / 312
   
# vgreduce vg20 /dev/sdp1 ; vgextend vg20 /dev/sdp1
  Removed "/dev/sdp1" from volume group "vg20"
  Volume group "vg20" successfully extended

# vgdisplay -v vg20
<cut>
  --- Physical volumes ---
  PV Name               /dev/sdq1     
  PV UUID               M13ArL-7b9d-SvLJ-ik6H-pRYO-hqgg-WWaPRP
  PV Status             allocatable
  Total PE / Free PE    312 / 312
   
  PV Name               /dev/sdp1     
  PV UUID               8H24mH-k5TA-n3O0-sQUF-e8sB-dteF-luHLJF
  PV Status             allocatable
  Total PE / Free PE    469 / 469

	   
-poul




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