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5.3.3. Splitting the Volume Group

To create the new volume group yourvg, use the vgsplit command to split the volume group myvg.
Before you can split the volume group, the logical volume must be inactive. If the file system is mounted, you must unmount the file system before deactivating the logical volume.
You can deactivate the logical volumes with the lvchange command or the vgchange command. The following command deactivates the logical volume mylv and then splits the volume group yourvg from the volume group myvg, moving the physical volume /dev/sdc1 into the new volume group yourvg.
[root@tng3-1 ~]# lvchange -a n /dev/myvg/mylv
[root@tng3-1 ~]# vgsplit myvg yourvg /dev/sdc1
  Volume group "yourvg" successfully split from "myvg"
You can use the vgs command to see the attributes of the two volume groups.
[root@tng3-1 ~]# vgs
  VG     #PV #LV #SN Attr   VSize  VFree
  myvg     2   1   0 wz--n- 34.30G 10.80G
  yourvg   1   0   0 wz--n- 17.15G 17.15G

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