struct _CMP_VOLUME_CONTEXT// Size=0x2c
{
    struct _LIST_ENTRY VolumeContextListEntry;// Offset=0x0 Size=0x8
    struct _CMP_VOLUME_MANAGER * VolumeManager;// Offset=0x8 Size=0x4
    long RefCount;// Offset=0xc Size=0x4
    struct _GUID VolumeGuid;// Offset=0x10 Size=0x10
    void * VolumeFileObject;// Offset=0x20 Size=0x4
    struct _CMSI_RW_LOCK VolumeContextLock;// Offset=0x24 Size=0x4
    unsigned char DeviceUsageNotificationSent;// Offset=0x28 Size=0x1
};