[ovirt-users] adding iSCSI storage to storagedomain not possible: checkbox disabled

Hello, I am playing with ovirt and succeeded with glusterfs setup "Up and Running with oVirt 3.5" by Jason Brock. There are 3 iSCSI for the setup available. When I repeat this setup with iSCSI disks, I have at least a running hosted_engine on the iSCSI lun. But I cannot add this iSCSI Lun to my initial storagedomain. In the dialog box for adding luns to Storage-domains, the check box for the lun with the hosted-engine is disabled ( shown geayed out) . How can i used this lun too? thanks for answers. Here some data: [root@o1 ~] yum repolist ..... repo id repo name status !base/7/x86_64 CentOS-7 - Base 8,652 !extras/7/x86_64 CentOS-7 - Extras 84 !gh gh 2 !ovirt-3.5/7 Latest oVirt 3.5 Release 286 !ovirt-3.5-epel/x86_64 Extra Packages for Enterprise Linux 7 - x86_64 7,677 !ovirt-3.5-glusterfs-epel/7/x86_64 GlusterFS is a clustered file-system capable of scaling to seve 12 !ovirt-3.5-glusterfs-noarch-epel/7 GlusterFS is a clustered file-system capable of scaling to seve 1 !ovirt-3.5-patternfly1-noarch-epel/x86_64 Copr repo for patternfly1 owned by patternfly 6 !updates/7/x86_64 CentOS-7 - Updates 357 [root@o1 ~]# pvs PV VG Fmt Attr PSize PFree /dev/mapper/368fc61d60ce21f7f414235020000a0fa aaebe9c2-3ec3-4b58-96e9-328cac605601 lvm2 a-- 1023.75g 1019.88g /dev/mapper/368fc61d60ce22f80414265020000c077 aaebe9c2-3ec3-4b58-96e9-328cac605601 lvm2 a-- 1023.75g 1023.75g /dev/mapper/368fc61d60ce27f7c41420502000000dd b64b8502-922f-413f-9340-e1c693b3d517 lvm2 a-- 1023.75g 994.62g [root@o1 ~]# vgs VG #PV #LV #SN Attr VSize VFree aaebe9c2-3ec3-4b58-96e9-328cac605601 2 6 0 wz--n- 2.00t 2.00t b64b8502-922f-413f-9340-e1c693b3d517 1 9 0 wz--n- 1023.75g 994.62g