Adding a Logical Volume to a Service Guard Cluster
1. Create the LV as normal on the active node. Ensure it is unmounted when complete 2. Shutdown the package affected using cmhaltpkg packge_name 3. vgexport -p -v -m /tmp/vg_name.map /dev/vg_name > /tmp/vg_devs 4. edit /tmp/vg_devs removing the first line 5. Copy the map file and vg_devs to the second node On_the_second_node: 6. Note the minor number of the volume group affected 7. Remove the volume group using vgexport -v /dev/vg_name 8. mkdir /dev/vg_name and create group file with mknod using the minor number noted earlier. 9. vgimport -v -m /tmp/vg_name.map /dev/vg_name `cat /tmp/vg_devs` 10. check VG as follows: 1. vgchange -a e /dev/vg_name 2. vgdisplay -v /dev/vg_name 3. vgcfgbackup /dev/vg_name 4. vgchange -a n /dev/vg_name 11. If OK, edit package control script to add the new logical volume and copy to all nodes.
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