[ovirt-devel] vdsm disabling logical volumes

[Jiri Moskovcak]

Greetings vdsm developers!

While working on adding ISCSI support to the hosted engine tools, I ran 
into a problem with vdms. It seems that when stopped vdsm deactivates 
ALL logical volumes in it's volume group and when it starts it 
reactivates only specific logical volumes. This is a problem for hosted 
engine tools as they create logical volumes in the same volume group and 
when vdsm deactivates the LVs the hosted engine tools don't have a way 
to reactivate it, because the services drop the root permissions and are 
running as vdsm and apparently only root can activate LVs. So far the 
only suitable solution seems to be to change vdsm to only 
deactivate/activate it's own LVs. I would be grateful for any hints.

Thank you,
Jirka