RedoLog Corrupt Error and "Failed to clone disk : Bad file descriptor (589833)." when trying to clone

Hello Every one,

I have a big problem on a esxi 3.5 host; the only vm guest freezes during boot with error:

"The RedoLog for "SERVERNAME" has been detected to be corrupt. The virtual machine needs to be powered off. If this problem persists, you need to discard the RedoLog."

So I tried to follow this procedureto recover

but then the cloning fails with this message:

/vmfs/volumes/48e02344-a1437a55-d1ac-00237d5669f4/Exchange Server 1 # vmkfstools -i "Exchange Server 1-00000                                         .vmdk" "Exchange Server 1-000001-repair.vmdk"

Destination disk format: VMFS thick

Cloning disk 'Exchange Server 1-000001.vmdk'...

Clone: 36% done.Failed to clone disk : Bad file descriptor (589833).

Attached you'll find some screenshots of informations I collected about the CID chain and logs.

I hope someone can help.

Thanks in advance