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тАО11-27-2006 11:07 AM
тАО11-27-2006 11:07 AM
Can't Increase LUN size on VA 7400 Array
I originally created a 8Mb Lun on our VA 7400 array. Then I wanted to increase the size to 16Mb. So I deleted the LUN from the array and re-created it as 16Mb in size.
When I try to add it to a volume group the PV still comes back with 1 8Mb PE:
--------------------------------------------------------------
root# pvremove /dev/rdsk/c3t0d1
The physical volume associated with "/dev/rdsk/c3t0d1" has been removed.
root# diskinfo /dev/rdsk/c3t0d1
SCSI describe of /dev/rdsk/c3t0d1:
vendor: HP
product id: A6189A
type: direct access
size: 16384 Kbytes
bytes per sector: 512
root# pvcreate -f /dev/rdsk/c3t0d1
Physical volume "/dev/rdsk/c3t0d1" has been successfully created.
root # vgcreate -e 5000 -l 255 -p 48 -s 8 /dev/vghlab2 /dev/dsk/c3t0d1
Volume group "/dev/vghlab2" has been successfully created.
Volume Group configuration for /dev/vghlab2 has been saved in /etc/lvmconf/vghlab2.conf
root # vgdisplay -v vghlab2
--- Volume groups ---
VG Name /dev/vghlab2
VG Write Access read/write
VG Status available
Max LV 255
Cur LV 0
Open LV 0
Max PV 48
Cur PV 1
Act PV 1
Max PE per PV 5000
VGDA 2
PE Size (Mbytes) 8
Total PE 1
Alloc PE 0
Free PE 1
Total PVG 0
Total Spare PVs 0
Total Spare PVs in use 0
--- Physical volumes ---
PV Name /dev/dsk/c3t0d1
PV Status available
Total PE 1
Free PE 1
Autoswitch On
-----------------------------------------------------------
If diskinfo returns the correct info where do the LVM commands get theirs???
When I try to add it to a volume group the PV still comes back with 1 8Mb PE:
--------------------------------------------------------------
root# pvremove /dev/rdsk/c3t0d1
The physical volume associated with "/dev/rdsk/c3t0d1" has been removed.
root# diskinfo /dev/rdsk/c3t0d1
SCSI describe of /dev/rdsk/c3t0d1:
vendor: HP
product id: A6189A
type: direct access
size: 16384 Kbytes
bytes per sector: 512
root# pvcreate -f /dev/rdsk/c3t0d1
Physical volume "/dev/rdsk/c3t0d1" has been successfully created.
root # vgcreate -e 5000 -l 255 -p 48 -s 8 /dev/vghlab2 /dev/dsk/c3t0d1
Volume group "/dev/vghlab2" has been successfully created.
Volume Group configuration for /dev/vghlab2 has been saved in /etc/lvmconf/vghlab2.conf
root # vgdisplay -v vghlab2
--- Volume groups ---
VG Name /dev/vghlab2
VG Write Access read/write
VG Status available
Max LV 255
Cur LV 0
Open LV 0
Max PV 48
Cur PV 1
Act PV 1
Max PE per PV 5000
VGDA 2
PE Size (Mbytes) 8
Total PE 1
Alloc PE 0
Free PE 1
Total PVG 0
Total Spare PVs 0
Total Spare PVs in use 0
--- Physical volumes ---
PV Name /dev/dsk/c3t0d1
PV Status available
Total PE 1
Free PE 1
Autoswitch On
-----------------------------------------------------------
If diskinfo returns the correct info where do the LVM commands get theirs???
3 REPLIES 3
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тАО11-27-2006 08:56 PM
тАО11-27-2006 08:56 PM
Re: Can't Increase LUN size on VA 7400 Array
Hi,
Don't forget to recreate the volumegroup with the new lun.
I think you forget this action
Don't forget to recreate the volumegroup with the new lun.
I think you forget this action
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тАО11-28-2006 12:42 AM
тАО11-28-2006 12:42 AM
Re: Can't Increase LUN size on VA 7400 Array
I figured it out.
It's the LVM data structures on each disk that reduce the total amount of space available for the PV.
It's the LVM data structures on each disk that reduce the total amount of space available for the PV.
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тАО11-28-2006 12:44 AM
тАО11-28-2006 12:44 AM
Re: Can't Increase LUN size on VA 7400 Array
Closing thread.
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