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Control codes used in volume management.
In this section
| Topic | Description |
|---|---|
| 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. |
| 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. |
| 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. |
| FSCTL_QUERY_REGION_INFO |
Retrieves the storage tier regions defined for a volume that supports data tiering. |
| FSCTL_QUERY_STORAGE_CLASSES |
Retrieves the storage tiers defined for a volume that supports data tiering. |
| 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_USN_TRACK_MODIFIED_RANGES |
Enables range tracking feature for update sequence number (USN) change journal stream on a target volume, or modifies already enabled range tracking parameters. |
| 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. |
| 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.
- FSCTL_CREATE_USN_JOURNAL
- FSCTL_DELETE_USN_JOURNAL
- FSCTL_ENUM_USN_DATA
- FSCTL_MARK_HANDLE
- FSCTL_QUERY_USN_JOURNAL
- FSCTL_READ_FILE_USN_DATA
- FSCTL_READ_USN_JOURNAL
- FSCTL_WRITE_USN_CLOSE_RECORD
The following are defragmentation control codes.
- FSCTL_GET_RETRIEVAL_POINTER_BASE
- FSCTL_GET_RETRIEVAL_POINTERS
- FSCTL_GET_VOLUME_BITMAP
- FSCTL_LOOKUP_STREAM_FROM_CLUSTER
- FSCTL_MOVE_FILE
- FSCTL_QUERY_REGION_INFO
- FSCTL_QUERY_USN_JOURNAL