Logical Volume Manager

[nyck]

Hello,

I have got a volume group that has got two physical volumes in it. I would like to remove one of those physical volumes but i'm not too sure how to do this. Could someone advise me on the syntax for this?

cheers

 

[Martin999]

eg. To remove c0t2d2 from vg02

vgreduce /dev/vg01 /dev/dsk/c0t2d2

however, you first have to remove any logical volumes on the disk :

eg. lvremove /dev/vg01/lvol3

(a pvdisplay (pvdisplay -v /dev/dsk/c0t2d0 |pg) will show what lvols are on the disk)

Make sure you back up first

Martin

 

[Martin999]

Spot the error -

2nd line should read:

vgreduce /dev/vg02 /dev/dsk/c0t2d2

 

[raggmopp]

You must make sure that there is no data on the disk you want to remove from the VG. Can use the 'pvdisplay -v /dev/dsk/cXtYdZ' to get this info.

Once confirmed do the lvremove or lvresuce, whichever you need.

Once the LVs are removed from the disk, can use the vgreduce command to free the disk.

 

[Martin999]

.. that was what the pvdisplay -v /dev/dsk/c0t2d0 |pg was for ... )

I kinda assumed it was known that a lvremove removed data ...

Once the disk is out, it could be worth an pvreduve on the disk. Therefore if the disk is reused, the pvcreate option would not need a -f.

Martin