VM Logical Volume shown on Host

hk flag

Some context, I've builded an Opennebula cloud ( I've been using it for more than 2 years now without any issue on that side. Recently i've noticed a strange behavior.

On my hypervisor which are the servers who are running libvirt and the KVM I am able to see to logical volume of a guest. Morever as I am using an LVM datastores to operate Opennebula I see all logical volume of all the recent guest.( This does not apply for the old VMs)

Here the example.

root@xxx:/home/xxe# lvs
  LV           VG            Attr       LSize    Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  THIS IS NOT EXPECTED                                                 
  image        on-disk       -wi-------  140,00g                                                    
  lv-mysql     on-disk       -wi-------  <25,00g                                                    
  data         opt           -wi-----p-   29,99g                                                    
  data         opt           -wi-------  <50,00g                                                    
  data         sql           -wi-------  <50,00g                                                    
  image        vg-one-101    -wi-------  190,00g   

  lv-one-164-0 vg-one-104    -wi-a-----   24,00g                                                    
  lv-one-167-0 vg-one-104    -wi-a-----  <24,59g                                                    
  lv-one-167-2 vg-one-104    -wi-a-----   50,00g                                                    
  lv-one-167-3 vg-one-104    -wi-a-----   50,00g                                                    
  lv-one-168-0 vg-one-104    -wi-ao----  <24,59g                                                    
  lv-one-168-2 vg-one-104    -wi-ao----  100,00g                                                    
  lv-one-173-0 vg-one-104    -wi-ao----  <24,59g                                                    
  lv-one-174-0 vg-one-104    -wi-ao----  <24,59g                                                    
  lv-one-174-2 vg-one-104    -wi-ao----  120,00g             

Not really asking on Opennebula way of working but more around KVM. Why for some and only some of the guest logical volume are displayed on the host ?


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