Hi all,   I have an Ovirt 4.2.8 cluster. Nodes are 4.2 ovirt nodes and the volumes (5) attached to nodes by FC. 2 weeks ago i made a small vm (centos 7 based) for me to test (name A). After the test i dropped a vm. Next day a made an another vm (named B) to the developes and tired to add a new disk to the vm (B). Than a original volume group (vg) of the vm (B) missed and i got back the yesterday dropped vm`s (A) vg! I tired to restart a vm, but the vm never started again. I dropped this vm (B) too, and tired to add a new disk an older running vm (C) too, but a volume group changed to that vm`s vg what i dropped before (B).   I checked this „error” and i got it ,then i delete or move disks from the end of the FC volume.   Have sombody ever seen error like this?   Thanks,   csaba Ps: in this cluster a managed 120 productive vm, so….