Module replace 

Device replacement: replacing a device with another while the filesystem is online

A replace operation copies all data from a source device to a target device, then swaps the target into the filesystem in place of the source. The filesystem remains mounted and usable throughout.

Requires CAP_SYS_ADMIN.

Structs

ReplaceStatus

Status of a device replace operation, as returned by the status query.

Enums

ReplaceSource

How to identify the source device for a replace operation.

ReplaceStartError

Result of a replace start attempt that the kernel rejected at the application level (ioctl succeeded but the result field indicates a problem).

ReplaceState

Current state of a device replace operation.

Functions

replace_cancel

Cancel a running device replace operation on the filesystem referred to by fd.

replace_start

Start a device replace operation, copying all data from source to the target device at tgtdev_path.

replace_status

Query the status of a device replace operation on the filesystem referred to by fd.