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Maximum number of hard disk within a volume group.

 
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JI HUI
Frequent Advisor

Re: Maximum number of hard disk within a volume group.

Hi Denver,

vgdisply showed following:
VG Name /dve/vg02
VG Write Access read/write
VG Status available
MAX LV 255
Cur LV 1
Open LV 1
Max PV 16
Cur PV 12
Act PV 12
Max PE per PV 3000
VGDA 24
Total PE 13020
Alloc PE 13020
Free PE..
Total PVG 2

Only one logical volume was crated and used all space.
Mirroring was used.

Any comments on this configuration?

Thank you.
Nothing is everything
Denver Osborn
Honored Contributor

Re: Maximum number of hard disk within a volume group.

You have only one lvol in VG02... I can only assume that the lvol might span all 6 PVs... what does lvdisplay show. Suspect mirror copies = 1... but then it's only limited to 6 PV now, unless you reduce the mirror. If mirror copies show 2, then I'd suspect the lvol spans 4 PV (x2 mirror = 12 PV)... that would be where your "limited to 4 disks" came from. The thing that throws me off is PVG = 2... so the thing I'd be curious to see is the number of mirror copies.

lvdisplay /dev/vg02/lvol1
mirror copies = ?

-denver
JI HUI
Frequent Advisor

Re: Maximum number of hard disk within a volume group.

Hi Denver,

Sorry for the delay, Please kindly refer to the attached file for the information required.

Thank you.

Nothing is everything
T G Manikandan
Honored Contributor

Re: Maximum number of hard disk within a volume group.

Two disk are giving read errors .
#ls -l /dev/rdsk | grep "0x013000"

#ls -l /dev/rdsk | grep "0x01e000"

then do a dd on the disks to check whether they have gone bad.
#dd if=/dev/rdsk/cXtYdZ of=/dev/null bs=1024k


Do check that your LVM patches uptodate.