Hi,
Host 2012R2 with Hyper-V-role, Backups are done with DPM 2012R2.
While job is working, three warnings are recorded in event-log of the guest:
partmgr / Event ID 58 / The disk signature of disk 2 is equal to the disk signature of disk 1.
partmgr / Event ID 58 / The disk signature of disk 2 is equal to the disk signature of disk 1.
partmgr / Event ID 58 / The disk signature of disk 3 is equal to the disk signature of disk 0.
This happens in all guests (with different disk numbers). No corresponding error on Host or DPM. Registry of each guest is growing in these keys:
HKEY_LOCAL_MACHINE\SYSTEM\MountedDevices
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2
The popular hint "attach the VHDs, bring them on- and offline, detach" brings no solution. As Mike Jacquet from Microsoft told in this thread, it is a problem of Hyper-V and not DPM.
Has anyone a solution for this? Thanks!