Volume Management Control Codes

Control codes used in volume management.

In this section

TopicDescription

FSCTL_CREATE_USN_JOURNAL

Creates an update sequence number (USN) change journal stream on a target volume, or modifies an existing change journal stream.

FSCTL_CSV_QUERY_DOWN_LEVEL_FILE_SYSTEM_CHARACTERISTICS

Retrieves information about a file system for which CSVFS is a proxy.

FSCTL_DELETE_USN_JOURNAL

Deletes the update sequence number (USN) change journal on a volume, or waits for notification of change journal deletion.

FSCTL_DISMOUNT_VOLUME

Dismounts a volume regardless of whether or not the volume is currently in use. For more information, see the Remarks section.

FSCTL_ENUM_USN_DATA

Enumerates the update sequence number (USN) data between two specified boundaries to obtain master file table (MFT) records.

FSCTL_EXTEND_VOLUME

Increases the size of a mounted volume.

FSCTL_GET_BOOT_AREA_INFO

Retrieves the locations of boot sectors for a volume.

To perform this operation, call the DeviceIoControl function with the following parameters.

FSCTL_GET_INTEGRITY_INFORMATION

Retrieves the integrity status of a file or directory on a ReFS volume.

FSCTL_GET_NTFS_VOLUME_DATA

Retrieves information about the specified NTFS file system volume.

FSCTL_GET_RETRIEVAL_POINTER_BASE

Returns the sector offset to the first logical cluster number (LCN) of the file system relative to the start of the volume.

To perform this operation, call the DeviceIoControl function with the following parameters.

FSCTL_GET_RETRIEVAL_POINTERS

Given a file handle, retrieves a data structure that describes the allocation and location on disk of a specific file, or, given a volume handle, the locations of bad clusters on a volume.

FSCTL_GET_VOLUME_BITMAP

Retrieves a bitmap of occupied and available clusters on a volume.

FSCTL_IS_CSV_FILE

Determines whether a file is stored on a CSVFS volume, or retrieves namespace information.

FSCTL_IS_FILE_ON_CSV_VOLUME

Determines whether a file is stored on a CSVFS volume, or retrieves namespace information.

FSCTL_IS_VOLUME_MOUNTED

Determines whether the specified volume is mounted, or if the specified file or directory is on a mounted volume.

FSCTL_IS_VOLUME_OWNED_BYCSVFS

Determines whether a volume is locked by CSVFS.

FSCTL_LOCK_VOLUME

Locks a volume if it is not in use.

FSCTL_LOOKUP_STREAM_FROM_CLUSTER

Given a handle to a NTFS volume or a file on a NTFS volume, returns a chain of data structures that describes streams that occupy the specified clusters.

FSCTL_MARK_HANDLE

Marks a specified file or directory and its change journal record with information about changes to that file or directory.

FSCTL_MOVE_FILE

Relocates one or more virtual clusters of a file from one logical cluster to another within the same volume. This operation is used during defragmentation.

FSCTL_QUERY_FILE_SYSTEM_RECOGNITION

Queries for file system recognition information on a volume.

To perform this operation, call the DeviceIoControl function with the following parameters.

FSCTL_QUERY_REGION_INFO

Retrieves the storage tier regions defined for a volume that supports data tiering.

To perform this operation, call the DeviceIoControl function with the following parameters.

FSCTL_QUERY_STORAGE_CLASSES

Retrieves the storage tiers defined for a volume that supports data tiering.

To perform this operation, call the DeviceIoControl function with the following parameters.

FSCTL_QUERY_USN_JOURNAL

Queries for information on the current update sequence number (USN) change journal, its records, and its capacity.

FSCTL_READ_FILE_USN_DATA

Retrieves the update sequence number (USN) change-journal information for the specified file or directory.

FSCTL_READ_FROM_PLEX

Reads from the specified plex.

FSCTL_READ_USN_JOURNAL

Retrieves the set of update sequence number (USN) change journal records between two specified USN values.

FSCTL_REPAIR_COPIES

Repair data corruption by selecting the proper copy to use.

FSCTL_SET_INTEGRITY_INFORMATION

Retrieves the integrity status of a file or directory on a ReFS volume.

FSCTL_SHRINK_VOLUME

Signals that the volume is to be prepared to perform the shrink operation, the shrink operation is to be committed, or the shrink operation is to be terminated.

FSCTL_UNLOCK_VOLUME

Unlocks a volume.

FSCTL_WRITE_USN_CLOSE_RECORD

Generates a record in the update sequence number (USN) change journal stream for the input file.

IOCTL_VOLUME_GET_GPT_ATTRIBUTES

Retrieves the attributes for a volume.

To perform this operation, call the DeviceIoControl function with the following parameters.

IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS

Retrieves the physical location of a specified volume on one or more disks.

IOCTL_VOLUME_IS_CLUSTERED

Determines whether the specified volume is clustered.

IOCTL_VOLUME_IS_CSV

Determines whether a volume is a CSV volume.

IOCTL_VOLUME_OFFLINE

Takes a volume offline.

IOCTL_VOLUME_ONLINE

Brings a volume online.

 

The following control codes are used with change journals.

The following are defragmentation control codes.

Related topics

Directory Management Control Codes
File Management Control Codes

 

 

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