UINT32
CMirDiskObject::GetNDASMediaType() const
{
if(::IsEmptyDisk(FirstDisk()))
{
if(::IsEmptyDisk(SecondDisk()))
return NMT_INVALID;
else
{
CUnitDiskObjectPtr unitDisk =
boost::dynamic_pointer_cast<CUnitDiskObject>(SecondDisk());
CUnitDiskInfoHandlerPtr unitHandler = unitDisk->GetInfoHandler();
return unitHandler->GetNDASMediaType();
}
}
else
{
CUnitDiskObjectPtr unitDisk =
boost::dynamic_pointer_cast<CUnitDiskObject>(FirstDisk());
CUnitDiskInfoHandlerPtr unitHandler = unitDisk->GetInfoHandler();
return unitHandler->GetNDASMediaType();
}
}
void CMirDiskObject::MigrateV1()
{
if(::IsEmptyDisk(FirstDisk()) || ::IsEmptyDisk(SecondDisk()))
return;
//
// To migrate, all the disks in the bound must exist
// In version 1, only 2 disks can be bound.
//
ATLASSERT( GetDiskCount() == 2 );
// CUnitDiskObjectPtr firstDisk, secondDisk;
CUnitDiskObjectVector vtDisks;
// firstDisk = boost::dynamic_pointer_cast<CUnitDiskObject>( front() );
// secondDisk = boost::dynamic_pointer_cast<CUnitDiskObject>( back() );
vtDisks.push_back( FirstDisk() );
vtDisks.push_back( SecondDisk() );
//
// Unbind disks & bind again with version 2 information
//
FirstDisk()->UnBind( FirstDisk() );
SecondDisk()->UnBind( SecondDisk() );
FirstDisk()->Bind( vtDisks, 0, NMT_RAID1 );
SecondDisk()->Bind( vtDisks, 1, NMT_RAID1 );
}
_int64 CMirDiskObject::GetUserSectorCount() const
{
if(!::IsEmptyDisk(FirstDisk()))
{
return FirstDisk()->GetUserSectorCount();
}
if(!::IsEmptyDisk(SecondDisk()))
{
return SecondDisk()->GetUserSectorCount();
}
return 0;
}
BOOL CMirDiskObject::IsBroken() const
{
if(!FirstDisk()->IsUsable() || !SecondDisk()->IsUsable())
return TRUE;
return FALSE;
}
BOOL CMirDiskObject::IsUsable() const
{
// If at least one disk is usable, we can still use mirror.
if(FirstDisk()->IsUsable() || SecondDisk()->IsUsable())
return TRUE;
return FALSE;
}
BOOL CMirDiskObject::GetDirtyDiskStatus(BOOL *pbFirstDefected, BOOL *pbSecondDefected) const
{
BOOL bResults;
LAST_WRITTEN_SECTOR FirstLWS, SecondLWS;
*pbFirstDefected = FALSE;
*pbSecondDefected = FALSE;
if(::IsEmptyDisk(FirstDisk()) || ::IsEmptyDisk(SecondDisk()))
return 0;
CUnitDiskInfoHandlerPtr Firsthandler = FirstDisk()->GetInfoHandler();
CUnitDiskInfoHandlerPtr Secondhandler = SecondDisk()->GetInfoHandler();
bResults = Firsthandler->GetLastWrittenSectorInfo(&FirstLWS);
if(!bResults) return FALSE;
bResults = Secondhandler->GetLastWrittenSectorInfo(&SecondLWS);
if(!bResults) return FALSE;
if ( Firsthandler->IsPeerDirty() || FirstLWS.timeStamp > SecondLWS.timeStamp)
{
*pbSecondDefected = TRUE;
}
else
{
*pbSecondDefected = FALSE;
}
if ( Secondhandler->IsPeerDirty() || SecondLWS.timeStamp > SecondLWS.timeStamp)
{
*pbFirstDefected = TRUE;
}
else
{
*pbFirstDefected = FALSE;
}
return TRUE;
}