Further info about the node: [root@f18ovn01 ~]# vgs VG #PV #LV #SN Attr VSize VFree 013bcc40-5f3d-4394-bd3b-971b14852654 1 5 0 wz--n- 99.62g 83.50g 14b5167c-5883-4920-8236-e8905456b01f 1 11 0 wz--n- 99.62g 58.25g 2aff7dc6-e25b-433b-9681-5541a29bb07c 1 11 0 wz--n- 99.62g 21.75g 3fb66ba1-cfcb-4341-8960-46f0e8cf6e83 1 18 0 wz--n- 149.62g 64.38g 596a3408-67d7-4b26-b482-e3a7554a5897 1 13 0 wz--n- 99.62g 57.75g 8573d237-f86f-4b27-be80-479281a53645 1 6 0 wz--n- 49.62g 45.75g VG_ISCSI 1 1 0 wz--n- 50.00g 0 be882de7-6c79-413b-85aa-f0b8b77cb59e 1 6 0 wz--n- 99.62g 95.75g fedora_f18ovn01 1 2 0 wz--n- 67.84g 4.00m vg_drbd0 1 1 0 wz--n- 2.00g 0 [root@f18ovn01 ~]# ll /rhev/data-center/5849b030-626e-47cb-ad90-3ce782d831b3/013bcc40-5f3d-4394-bd3b-971b14852654/images/01488698-6420-4a32-9095-cfed1ff8f4bf/d477fcba-2110-403e-93fe-15565aae5304 ls: cannot access /rhev/data-center/5849b030-626e-47cb-ad90-3ce782d831b3/013bcc40-5f3d-4394-bd3b-971b14852654/images/01488698-6420-4a32-9095-cfed1ff8f4bf/d477fcba-2110-403e-93fe-15565aae5304: No such file or directory [root@f18ovn01 ~]# ll /rhev/data-center/ total 12 drwxr-xr-x. 2 vdsm kvm 4096 Apr 18 09:03 5849b030-626e-47cb-ad90-3ce782d831b3 drwxr-xr-x. 2 vdsm kvm 4096 Mar 11 17:16 hsm-tasks drwxr-xr-x. 5 vdsm kvm 4096 Mar 19 14:18 mnt [root@f18ovn01 ~]# ll /rhev/data-center/5849b030-626e-47cb-ad90-3ce782d831b3 total 32 lrwxrwxrwx. 1 vdsm kvm 66 Apr 18 09:03 14b5167c-5883-4920-8236-e8905456b01f -> /rhev/data-center/mnt/blockSD/14b5167c-5883-4920-8236-e8905456b01f lrwxrwxrwx. 1 vdsm kvm 66 Apr 18 09:03 2aff7dc6-e25b-433b-9681-5541a29bb07c -> /rhev/data-center/mnt/blockSD/2aff7dc6-e25b-433b-9681-5541a29bb07c lrwxrwxrwx. 1 vdsm kvm 66 Apr 18 09:03 3fb66ba1-cfcb-4341-8960-46f0e8cf6e83 -> /rhev/data-center/mnt/blockSD/3fb66ba1-cfcb-4341-8960-46f0e8cf6e83 lrwxrwxrwx. 1 vdsm kvm 66 Apr 18 09:03 596a3408-67d7-4b26-b482-e3a7554a5897 -> /rhev/data-center/mnt/blockSD/596a3408-67d7-4b26-b482-e3a7554a5897 lrwxrwxrwx. 1 vdsm kvm 66 Apr 18 09:03 8573d237-f86f-4b27-be80-479281a53645 -> /rhev/data-center/mnt/blockSD/8573d237-f86f-4b27-be80-479281a53645 lrwxrwxrwx. 1 vdsm kvm 66 Apr 18 09:03 be882de7-6c79-413b-85aa-f0b8b77cb59e -> /rhev/data-center/mnt/blockSD/be882de7-6c79-413b-85aa-f0b8b77cb59e lrwxrwxrwx. 1 vdsm kvm 88 Apr 18 09:03 e3251723-08e1-4b4b-bde4-c10d6372074b -> /rhev/data-center/mnt/f18engine.ceda.polimi.it:_ISO/e3251723-08e1-4b4b-bde4-c10d6372074b lrwxrwxrwx. 1 vdsm kvm 66 Apr 18 09:03 mastersd -> /rhev/data-center/mnt/blockSD/2aff7dc6-e25b-433b-9681-5541a29bb07c [root@f18ovn01 ~]# lvs 013bcc40-5f3d-4394-bd3b-971b14852654 LV VG Attr LSize Pool Origin Data% Move Log Copy% Convert 0a6c7300-011a-46f9-9a5d-d22476a7f4c6 013bcc40-5f3d-4394-bd3b-971b14852654 -wi-ao--- 1.00g 2be37d02-b44f-4823-bf26-054d1a1f0c90 013bcc40-5f3d-4394-bd3b-971b14852654 -wi-ao--- 10.00g d477fcba-2110-403e-93fe-15565aae5304 013bcc40-5f3d-4394-bd3b-971b14852654 -wi-ao--- 1.00g ef887fcd-f2a9-4e26-a01e-bdbf5ba14ae5 013bcc40-5f3d-4394-bd3b-971b14852654 -wi-ao--- 2.12g f8eb4d4c-9aae-44b8-9123-73f3182dc4dc 013bcc40-5f3d-4394-bd3b-971b14852654 -wi-ao--- 2.00g SO the question is why the VG related to my unattached SD (013bcc40-5f3d-4394-bd3b-971b14852654 if I understand correctly), still have active opened logical volumes and they are for.... Before putting into maintenance I verified that no VM disks was associated to that SD (at least from the gui). Gianluca