Hi, Yesterday someone powered off our storage, and all my 3 hosts lose their disks. After 2 days of recovering i managed to bring back everything, except engine VM, which is online but not visible to itself. I did new deployment of VM, restored backup and started engine setup. After manual database updates, my all VMs and hosts are OK now, but engine. I have engine VM with different VM id running than in database. I've tried this with no luck. engine=# update vm_static set vm_guid = '75072b32-6f93-4c38-8f18-825004072c1a' where vm_guid =(select vm_guid from vm_static where vm_name = 'HostedEngine'); ERROR: update or delete on table "vm_static" violates foreign key constraint "fk_disk_vm_element_vm_static" on table "disk_vm_element" DETAIL: Key (vm_guid)=(d81ccb53-2594-49db-b69a-04c73b504c59) is still referenced from table "disk_vm_element". Right now i've deployed engine on all 3 hosts but see this picture: [root@virt3 ~]# hosted-engine --vm-status !! Cluster is in GLOBAL MAINTENANCE mode !! [root@virt3 ~]# vdsClient -s 0 list 75072b32-6f93-4c38-8f18-825004072c1a Status = Up statusTime = 4397337690 kvmEnable = true emulatedMachine = pc afterMigrationStatus = pid = 5280 devices = [{'device': 'console', 'specParams': {}, 'type': 'console', 'deviceId': '2b6b0e87-c86a-4144-ad39-40d5bfe25df1', 'alias': 'console0'}, {'device': 'memballoon', 'specParams': {'model': 'none'}, 'type': 'balloon', 'target': 16777216, 'alias': 'balloon0'}, {'specParams': {'source': 'random'}, 'alias': 'rng0', 'address': {'slot': '0x07', 'bus': '0x00', 'domain': '0x0000', 'type': 'pci', 'function': '0x0'}, 'device': 'virtio', 'model': 'virtio', 'type': 'rng'}, {'device': 'unix', 'alias': 'channel0', 'type': 'channel', 'addr ess': {'bus': '0', 'controller': '0', 'type': 'virtio-serial', 'port': '1'}}, {'device': 'unix', 'alias': 'channel1', 'type': 'channel', 'address': {'bus': '0', 'controller': '0', 'type': 'virtio-serial', 'port': '2'}}, {'device': 'unix', 'alias': 'channel2', 'type': 'ch annel', 'address': {'bus': '0', 'controller': '0', 'type': 'virtio-serial', 'port': '3'}}, {'device': 'scsi', 'alias': 'scsi0', 'model': 'virtio-scsi', 'type': 'controller', 'address': {'slot': '0x04', 'bus': '0x00', 'domain': '0x0000', 'type': 'pci', 'function': '0x0'}} , {'device': 'usb', 'alias': 'usb', 'type': 'controller', 'address': {'slot': '0x01', 'bus': '0x00', 'domain': '0x0000', 'type': 'pci', 'function': '0x2'}}, {'device': 'ide', 'alias': 'ide', 'type': 'controller', 'address': {'slot': '0x01', 'bus': '0x00', 'domain': '0x00 00', 'type': 'pci', 'function': '0x1'}}, {'device': 'virtio-serial', 'alias': 'virtio-serial0', 'type': 'controller', 'address': {'slot': '0x05', 'bus': '0x00', 'domain': '0x0000', 'type': 'pci', 'function': '0x0'}}, {'device': 'vga', 'alias': 'video0', 'type': 'video', 'address': {'slot': '0x02', 'bus': '0x00', 'domain': '0x0000', 'type': 'pci', 'function': '0x0'}}, {'device': 'vnc', 'type': 'graphics', 'port': '5900'}, {'nicModel': 'pv', 'macAddr': '00:16:3e:01:29:95', 'linkActive': True, 'network': 'ovirtmgmt', 'alias': 'net0', 'spec Params': {}, 'deviceId': 'd348a068-063b-4a40-9119-a3d34f6c7db4', 'address': {'slot': '0x03', 'bus': '0x00', 'domain': '0x0000', 'type': 'pci', 'function': '0x0'}, 'device': 'bridge', 'type': 'interface', 'name': 'vnet0'}, {'index': '2', 'iface': 'ide', 'name': 'hdc', 'al ias': 'ide0-1-0', 'specParams': {}, 'readonly': 'True', 'deviceId': 'e738b50b-c200-4429-8489-4519325339c7', 'address': {'bus': '1', 'controller': '0', 'type': 'drive', 'target': '0', 'unit': '0'}, 'device': 'cdrom', 'shared': 'false', 'path': '', 'type': 'disk'}, {'poolI D': '00000000-0000-0000-0000-000000000000', 'volumeInfo': {'path': 'engine/2e2820f3-8c3d-487d-9a56-1b8cd278ec6c/images/5deeac2d-18d7-4622-9371-ebf965d2bd6b/60aa51b7-32eb-41a9-940d-9489b0375a3d', 'protocol': 'gluster', 'hosts': [{'port': '0', 'transport': 'tcp', 'name': ' virt1'}, {'port': '0', 'transport': 'tcp', 'name': 'virt2'}, {'port': '0', 'transport': 'tcp', 'name': 'virt3'}]}, 'index': '0', 'iface': 'virtio', 'apparentsize': '62277025792', 'specParams': {}, 'imageID': '5deeac2d-18d7-4622-9371-ebf965d2bd6b', 'readonly': 'False', 's hared': 'exclusive', 'truesize': '3255476224', 'type': 'disk', 'domainID': '2e2820f3-8c3d-487d-9a56-1b8cd278ec6c', 'reqsize': '0', 'format': 'raw', 'deviceId': '5deeac2d-18d7-4622-9371-ebf965d2bd6b', 'address': {'slot': '0x06', 'bus': '0x00', 'domain': '0x0000', 'type': 'pci', 'function': '0x0'}, 'device': 'disk', 'path': '/var/run/vdsm/storage/2e2820f3-8c3d-487d-9a56-1b8cd278ec6c/5deeac2d-18d7-4622-9371-ebf965d2bd6b/60aa51b7-32eb-41a9-940d-9489b0375a3d', 'propagateErrors': 'off', 'optional': 'false', 'name': 'vda', 'bootOrder': '1', 'v olumeID': '60aa51b7-32eb-41a9-940d-9489b0375a3d', 'alias': 'virtio-disk0', 'volumeChain': [{'domainID': '2e2820f3-8c3d-487d-9a56-1b8cd278ec6c', 'leaseOffset': 0, 'volumeID': '60aa51b7-32eb-41a9-940d-9489b0375a3d', 'leasePath': '/rhev/data-center/mnt/glusterSD/virt1:_engi ne/2e2820f3-8c3d-487d-9a56-1b8cd278ec6c/images/5deeac2d-18d7-4622-9371-ebf965d2bd6b/60aa51b7-32eb-41a9-940d-9489b0375a3d.lease', 'imageID': '5deeac2d-18d7-4622-9371-ebf965d2bd6b', 'path': '/rhev/data-center/mnt/glusterSD/virt1:_engine/2e2820f3-8c3d-487d-9a56-1b8cd278ec6c /images/5deeac2d-18d7-4622-9371-ebf965d2bd6b/60aa51b7-32eb-41a9-940d-9489b0375a3d'}]}] guestDiskMapping = {'5deeac2d-18d7-4622-9': {'name': '/dev/vda'}, 'QEMU_DVD-ROM_QM00003': {'name': '/dev/sr0'}} vmType = kvm display = vnc memSize = 16384 cpuType = Westmere spiceSecureChannels = smain,sdisplay,sinputs,scursor,splayback,srecord,ssmartcard,susbredir smp = 4 vmName = HostedEngine clientIp = maxVCpus = 16 [root@virt3 ~]# [root@virt3 ~]# hosted-engine --vm-status !! Cluster is in GLOBAL MAINTENANCE mode !! --== Host 1 status ==-- conf_on_shared_storage : True Status up-to-date : True Hostname : virt1.management.gnc.am Host ID : 1 Engine status : {"reason": "vm not running on this host", "health": "bad", "vm": "down", "detail": "unknown"} Score : 3400 stopped : False Local maintenance : False crc32 : ef49e5b4 local_conf_timestamp : 7515 Host timestamp : 7512 Extra metadata (valid at timestamp): metadata_parse_version=1 metadata_feature_version=1 timestamp=7512 (Thu Aug 31 15:14:59 2017) host-id=1 score=3400 vm_conf_refresh_time=7515 (Thu Aug 31 15:15:01 2017) conf_on_shared_storage=True maintenance=False state=GlobalMaintenance stopped=False --== Host 3 status ==-- conf_on_shared_storage : True Status up-to-date : True Hostname : virt3 Host ID : 3 Engine status : {"health": "good", "vm": "up", "detail": "up"} Score : 3400 stopped : False Local maintenance : False crc32 : 4a85111c local_conf_timestamp : 102896 Host timestamp : 102893 Extra metadata (valid at timestamp): metadata_parse_version=1 metadata_feature_version=1 timestamp=102893 (Thu Aug 31 15:14:46 2017) host-id=3 score=3400 vm_conf_refresh_time=102896 (Thu Aug 31 15:14:49 2017) conf_on_shared_storage=True maintenance=False state=GlobalMaintenance stopped=False !! Cluster is in GLOBAL MAINTENANCE mode !! Also my storage domain for hosted engine is inactive, can't activate it it gives this error in web console: VDSM command GetImagesListVDS failed: Storage domain does not exist: (u'c44343af-cc4a-4bb7-a548-0c6f609d60d5',) It seems I should fiddle with database a bit more, but is't scary thing for me. Any help? Best regards, Misak Khachatryan