Convert volume group metadata format.
The vgconvert command is used to convert the metadata format of a specified LVM volume group, typically from "LVM1" format to "LVM2" format. Before converting the metadata, the volume group must be in an inactive state; otherwise, the conversion cannot be completed.
vgconvert (option) (parameter)
-M: The volume group format to convert to.
Volume Group: Specifies the volume group to be converted.
Before converting the metadata format, use the vgchange command to set the volume group to an inactive state. Enter the following command at the command line:
[root@localhost lvm]# vgchange -an vg1000 # Set volume group status to inactive
0 logical volume(s) in volume group "vg1000" now active
Use the vgconvert command to convert the volume group "vg1000" from "LVM1" format to "LVM2" format. Enter the following command at the command line:
[root@localhost lvm]# vgconvert -M2 vg1000 # Convert volume group to "LVM2" format
Volume group vg1000 successfully converted
Use the vgchange command to set the volume group back to an active state. Enter the following command at the command line:
[root@localhost lvm]# vgchange -ay vg1000 # Set volume group status to active
0 logical volume(s) in volume group "vg1000" now active