protected override string GetCantExecuteReasonCore(SelectedItem item)
{
VBD vbd = item.XenObject as VBD;
if (vbd == null)
{
return(base.GetCantExecuteReasonCore(item));
}
VM vm = vbd.Connection.Resolve <VM>(vbd.VM);
VDI vdi = vbd.Connection.Resolve <VDI>(vbd.VDI);
if (vm == null || vm.not_a_real_vm() || vdi == null)
{
return(base.GetCantExecuteReasonCore(item));
}
SR sr = vdi.Connection.Resolve <SR>(vdi.SR);
if (sr == null)
{
return(Messages.SR_COULD_NOT_BE_CONTACTED);
}
if (vdi.Locked)
{
var vdiType = vdi.VDIType();
return(vdiType == VDI.FriendlyType.SNAPSHOT
? Messages.CANNOT_ACTIVATE_SNAPSHOT_IN_USE
: vdiType == VDI.FriendlyType.ISO
? Messages.CANNOT_ACTIVATE_ISO_IN_USE
: Messages.CANNOT_ACTIVATE_VD_IN_USE);
}
if (vm.power_state != vm_power_state.Running)
{
return(string.Format(
Messages.CANNOT_ACTIVATE_VD_VM_HALTED,
Helpers.GetName(vm).Ellipsise(50)));
}
if (vdi.type == vdi_type.system)
{
return(Messages.TOOLTIP_DEACTIVATE_SYSVDI);
}
if (AreIODriversNeededAndMissing(vm))
{
return(string.Format(
vm.HasNewVirtualisationStates() ? Messages.CANNOT_ACTIVATE_VD_VM_NEEDS_IO_DRIVERS : Messages.CANNOT_ACTIVATE_VD_VM_NEEDS_TOOLS,
Helpers.GetName(vm).Ellipsise(50)));
}
if (vbd.currently_attached)
{
return(string.Format(Messages.CANNOT_ACTIVATE_VD_ALREADY_ACTIVE, Helpers.GetName(vm).Ellipsise(50)));
}
return(base.GetCantExecuteReasonCore(item));
}
protected override string GetCantExecuteReasonCore(IXenObject item)
{
VDI vdi = item as VDI;
if (vdi == null)
{
return(base.GetCantExecuteReasonCore(item));
}
SR sr = vdi.Connection.Resolve <SR>(vdi.SR);
if (sr == null)
{
return(Messages.SR_COULD_NOT_BE_CONTACTED);
}
VDI.FriendlyType vdiType = vdi.VDIType();
if (vdi.Locked)
{
return(vdiType == VDI.FriendlyType.SNAPSHOT ? Messages.CANNOT_DELETE_SNAPSHOT_IN_USE
: vdiType == VDI.FriendlyType.ISO ? Messages.CANNOT_DELETE_ISO_IN_USE
: Messages.CANNOT_DELETE_VD_IN_USE);
}
if (sr.Physical())
{
return(FriendlyErrorNames.VDI_IS_A_PHYSICAL_DEVICE);
}
if (sr.IsToolsSR())
{
return(Messages.CANNOT_DELETE_TOOLS_SR);
}
if (vdi.IsUsedByHA())
{
return(Messages.CANNOT_DELETE_HA_VD);
}
if (vdi.IsMetadataForDR())
{
return(Messages.CANNOT_DELETE_DR_VD);
}
List <VBD> vbds = vdi.Connection.ResolveAll <VBD>(vdi.VBDs);
if (vbds.Count > 1 && !AllowMultipleVBDDelete)
{
return(Messages.CANNOT_DELETE_VDI_MULTIPLE_VBDS);
}
foreach (VBD vbd in vbds)
{
VM vm = vdi.Connection.Resolve <VM>(vbd.VM);
if (vdiType == VDI.FriendlyType.SYSTEM_DISK)
{
if (vm.power_state == vm_power_state.Running)
{
return(string.Format(
Messages.CANNOT_DELETE_IN_USE_SYS_VD,
Helpers.GetName(vm).Ellipsise(20)));
}
}
if (vbd.Locked)
{
return(vdiType == VDI.FriendlyType.SNAPSHOT ? Messages.CANNOT_DELETE_SNAPSHOT_IN_USE
: vdiType == VDI.FriendlyType.ISO ? Messages.CANNOT_DELETE_ISO_IN_USE
: Messages.CANNOT_DELETE_VD_IN_USE);
}
if (vbd.currently_attached)
{
if (!AllowRunningVMDelete)
{
return(string.Format(Messages.CANNOT_DELETE_VDI_ACTIVE_ON,
Helpers.GetName(vm).Ellipsise(20)));
}
DeactivateVBDCommand cmd = new DeactivateVBDCommand(Program.MainWindow, vbd);
if (!cmd.CanExecute())
{
var reasons = cmd.GetCantExecuteReasons();
return(reasons.Count > 0
? string.Format(Messages.CANNOT_DELETE_CANNOT_DEACTIVATE_REASON,
Helpers.GetName(vm).Ellipsise(20), reasons.ElementAt(0).Value)
: Messages.UNKNOWN);
}
}
}
// This is a necessary final check, there are other blocking reasons non covered in this method
// Known examples:
// - someone else is calling a delete on this vdi already, altering the allowed ops
// - the storage manager cannot perform a delete on the SR due to drivers
if (!vdi.allowed_operations.Contains(vdi_operations.destroy))
{
return(vdiType == VDI.FriendlyType.SNAPSHOT ? Messages.CANNOT_DELETE_SNAPSHOT_GENERIC
: vdiType == VDI.FriendlyType.ISO ? Messages.CANNOT_DELETE_ISO_GENERIC
: Messages.CANNOT_DELETE_VD_GENERIC);
}
return(base.GetCantExecuteReasonCore(item));
}