Fail to delete snapshot on running machine.

[a.ulasov]

Take a snapshot with

VBoxManage snapshot VMName take snapshot_name --pause

then delete snapshot with

VBoxManage snapshot VMName delete snapshot_name

result is

0%...
Progress state: NS_ERROR_FAILURE
VBoxManage: error: Snapshot operation failed
VBoxManage: error: Failed to perform an online medium merge (VERR_INVALID_PARAMETER)
VBoxManage: error: Details: code NS_ERROR_FAILURE (0x80004005), component Console, interface IConsole
VBoxManage: error: Context: "int handleSnapshot(HandlerArg*)" at line 431 of file VBoxManageSnapshot.cpp

[mmalmeida]

I have the exact same issue. When I run snapshot delete, I get:

Progress state: NS_ERROR_FAILURE
VBoxManage: error: Snapshot operation failed
VBoxManage: error: Failed to perform an online medium merge (VERR_INVALID_PARAMETER)
VBoxManage: error: Details: code NS_ERROR_FAILURE (0x80004005), component Console, interface IConsole
VBoxManage: error: Context: "int handleSnapshot(HandlerArg*)" at line 431 of file VBoxManageSnapshot.cpp

[aeichner]

Please attach the VBox.log and also try to update to the latest VBox release to check whether this still happens.

[mmalmeida]

Relevant portion of Vbox.log when trying to delete the snapshot

[expert42]

I had the same problem (with 4.2.6), upgrading to 4.2.16 helped. Function 'DeletingSnapshotOnline' works now.