[MS-VDS]: Virtual Disk Service (VDS) Protocol Specification

VDS_VF_NOT_FORMATTABLE: If set, the volume cannot be formatted.VDS_VF_NTFS_NOT_SUPPORTED: If set, the volume does not support the NTFS file systembut can support other file systems.VDS_VF_FAT32_NOT_SUPPORTED: If set, the volume does not support FAT32.VDS_VF_FAT_NOT_SUPPORTED: If set, the volume does not support FAT.VDS_VF_NO_DEFAULT_DRIVE_LETTER: If set, the operating system does not automaticallyassign a drive letter when the volume is created or a disk containing existing volumes isconnected to the operating system. When cleared, the operating system assigns a drive letterto the volume. Callers can set and clear this flag. For basic GPT volumes and dynamic diskvolumes, assigning or removing a drive letter toggles this flag.VDS_VF_PERMANENTLY_DISMOUNTED: If set, the volume is unavailable and requires amount-point assignment. VDS sets this flag after the caller invokes theIVdsVolumeMF::Dismount method, setting the bForce and bPermanent parameters toTRUE.VDS_VF_PERMANENT_DISMOUNT_SUPPORTED: If set, the volume supports bPermanentfor the IVdsVolumeMF::Dismount method. This flag cannot be set or cleared by the client.This flag is set by the server if it applies.VDS_VF_SHADOW_COPY: If set, the volume is a shadow copy of another volume. This flagis set when the snapshot is taken, and it is cleared when the snapshot is broken from theoriginal volume. The VDS_VF_SHADOW_COPY flag is an indication for software-like filesystem filter drivers (for example, antivirus) to avoid attaching to the volume. Applicationscan use the attribute to differentiate snapshots from production volumes. Applications thatcreate a Fast Recovery, in which a shadow copy LUN is made into a non-snapshot by clearingthe read-only and hidden bit, will need to clear this bit as well.VDS_VF_FVE_ENABLED: The volume is encrypted with full-volume encryption.2.2.1.3 Structures2.2.1.3.1 VDS_SERVICE_NOTIFICATIONThe VDS_ SERVICE _NOTIFICATION structure provides information about state changes to theservice object.typedef struct _VDS_SERVICE_NOTIFICATION {ULONG ulEvent;VDS_RECOVER_ACTION action;} VDS_SERVICE_NOTIFICATION;ulEvent: The type of service notification; it MUST be set to the following value.ValueVDS_NF_SERVICE_OUT_OF_SYNC0x0000012DMeaningThe service's cache has become inconsistent or the servicehas encountered an error requiring client action.42 / 360[MS-VDS] — v20110610Virtual Disk Service (VDS) Protocol SpecificationCopyright © 2011 Microsoft Corporation.Release: Friday, June 10, 2011