Windows 2008 Hyper-V Cluster failover fails only by unpland failover

hallo,

i´ve got following problem:

we have 2 node windows 2008 ee cluster ca 20 vm´s on it.
the cluster has fiberchannel san, on this san disks there vhd´s fixed size , also the vm config files.

my problem is if i say switch other node the vm runing i´ve got events:

_________________________________________________________________

log name: system
source: microsoft-windows-failoverclustering
date:
event id: 1069
task category: resource control manager
level: error
key words:
user: system
computer: cluster1
description:
the cluster resource configuration of virtual computer "*****"" in clustered service or application in clustered virtual computer "******"" error occurred.
_______________________________________________________________

log name: system
source: microsoft-windows-hyper-v high-availability
date:
event id: 21502
task category: none
level: error
key words:
user: system
computer: cluster1
description:
"configuring virtual machine "******"": error canceling registration of virtual machine administrative virtual machine.

failed cancel registration of configuration virtual computer "a3038e3e-1895-4d45-9931-244ed9a7521c" hyper-v management service virtual computer: unknown error (0x80004005)

______________________________________________________


but my greatest problem is, if make an unpland failover shutdown, one vm didn´t come form the saved state , reboots, other vm´s are running well.
in event log ther same error masages first problem 

have attempted fix-up trick of exporting vm shared storage location , importing back?

this fix-up strange permissions or file sharing problems might happening.

the process be:
power down vm
export
rename origional
import
boot import
failover import
if delete origional (don't forget delete vhd)

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brian ehlert (hopefully have found useful)

Windows Server  >  Hyper-V