Ownership of cluster disk 'Cluster Disk 2' has been unexpectedly lost by this node.

I had been working with Hyper-V host and all of a sudden CSV is lost. I tried running validation test but that didn't help. I checked validatedstorage.log and found this

***** Validate Server Start ****
 0000261c.00002588::06:36:09.091  CprepPrepareNode: Enter CprepPrepareNode:

0000261c.00002588::06:36:09.091  CreateNtFile: Path \Device\ClusDisk, status 0

0000261c.00002588::06:36:09.091  CprepPrepareNode: Exit CprepPrepareNode: hr 0x0, pulMajorVersion 6, pulMinorVersion 1

0000261c.00002588::06:36:14.723  CprepPrepareNodePhase2: Enter CprepPrepareNodePhase2: AttachDisksOnSystemBus 1

0000261c.00002588::06:36:14.723  EnumerateDevices: Enter EnumerateDevices: EnumDevice 1

0000261c.00002588::06:36:14.723  EnumerateDevices: opened file \\?\pci#ven_103c&dev_323b&subsys_3355103c&rev_01#4&3b8839cc&0&0012#{2accfe60-c130-11d2-b082-00a0c91efb8b}, handle 1c8

0000261c.00002588::06:36:14.723  SendBusRescanIoctl: Failed to send bus rescan ioctl1, status 50

0000261c.00002588::06:36:14.723  SendBusRescanIoctl: Exit SendBusRescanIoctl: Index 0

0000261c.00002588::06:36:14.723  EnumerateDevices: opened file \\?\pci#ven_19a2&dev_0714&subsys_337b103c&rev_01#4&2263a140&0&0210#{2accfe60-c130-11d2-b082-00a0c91efb8b}, handle 1c8

0000261c.00002588::06:36:14.723  SendBusRescanIoctl: Failed to send bus rescan ioctl1, status 50

0000261c.00002588::06:36:14.723  SendBusRescanIoctl: Exit SendBusRescanIoctl: Index 1

0000261c.00002588::06:36:14.723  EnumerateDevices: opened file \\?\pci#ven_19a2&dev_0714&subsys_337b103c&rev_01#4&2263a140&0&0310#{2accfe60-c130-11d2-b082-00a0c91efb8b}, handle 1c8

0000261c.00002588::06:36:14.723  SendBusRescanIoctl: Failed to send bus rescan ioctl1, status 50

0000261c.00002588::06:36:14.723  SendBusRescanIoctl: Exit SendBusRescanIoctl: Index 2

0000261c.00002588::06:36:14.723  EnumerateDevices: opened file \\?\pci#ven_19a2&dev_0714&subsys_337c103c&rev_01#4&b2581ea&0&0218#{2accfe60-c130-11d2-b082-00a0c91efb8b}, handle 1c8

0000261c.00002588::06:36:14.723  SendBusRescanIoctl: Failed to send bus rescan ioctl1, status 50

0000261c.00002588::06:36:14.723  SendBusRescanIoctl: Exit SendBusRescanIoctl: Index 3

0000261c.00002588::06:36:14.738  EnumerateDevices: opened file \\?\pci#ven_19a2&dev_0714&subsys_337c103c&rev_01#4&b2581ea&0&0318#{2accfe60-c130-11d2-b082-00a0c91efb8b}, handle 1c8

0000261c.00002588::06:36:14.738  SendBusRescanIoctl: Failed to send bus rescan ioctl1, status 50

0000261c.00002588::06:36:14.738  SendBusRescanIoctl: Exit SendBusRescanIoctl: Index 4

0000261c.00002588::06:36:14.738  EnumerateDevices: opened file \\?\{8e7bd593-6e6c-4c52-86a6-77175494dd8e}#msvhdhba#1&3030e83&0&01#{2accfe60-c130-11d2-b082-00a0c91efb8b}, handle 1c8

0000261c.00002588::06:36:14.738  SendBusRescanIoctl: Failed to send bus rescan ioctl1, status 50

0000261c.00002588::06:36:14.738  SendBusRescanIoctl: Exit SendBusRescanIoctl: Index 5

0000261c.00002588::06:36:14.738  EnumerateDevices: Exit EnumerateDevices: status 0

0000261c.00002588::06:36:14.738  GetVolumeDisks: Exit GetVolumeDisks: status 0

0000261c.00002588::06:36:14.738  GetSystemDiskNumbers: Exit GetSystemDiskNumbers: status 0

0000261c.00002588::06:36:14.738  GetScsiAddressesFromDiskList: Exit GetScsiAddressesFromDiskList: status 0

0000261c.00002588::06:36:14.738  CreateNtFile: Path \Device\HarddiskVolume1, status 0

0000261c.00002588::06:36:14.738  GetVolumeDisks: Exit GetVolumeDisks: status 0

0000261c.00002588::06:36:14.738  GetNtldrDiskNumbers: Exit GetNtldrDiskNumbers: status 0

0000261c.00002588::06:36:14.738  GetMpioDisks: WMI disk instance MPIO\Disk&Ven_EMC&Prod_SYMMETRIX&Rev_5874\1&7f6ac24&0&6d70696f2630303031263030303126305f305f305f30_0

0000261c.00002588::06:36:14.738  GetDeviceNumber: failed to open device \\?\mpio#disk&ven_emc&prod_symmetrix&rev_5874#1&7f6ac24&0&6d70696f2630303031263030303126305f305f305f30#{53f56307-b6bf-11d0-94f2-00a0c91efb8b}, status 2

0000261c.00002588::06:36:14.738  GetMpioDisks: Failed to get device number for MPIO device MPIO\Disk&Ven_EMC&Prod_SYMMETRIX&Rev_5874\1&7f6ac24&0&6d70696f2630303031263030303126305f305f305f30, status 2

Cluster report says

Validate that a node that owns a disk retains ownership after disk arbitration.

The test was canceled.




Help please