IOCTL_SCSI_RESCAN_BUS IOCTL (ntddscsi.h)

Rescans the LUNs on the bus(es). It collects SCSI inquiry data about all devices on the bus(es), while preserving any claims on their respective devices for SCSI class drivers.

This request is obsolete and is supported for legacy code only. This request must be directed to an FDO and is valid only for legacy (non-PnP) class drivers and SCSI bus enumeration. If the bus can detect device insertion, this request is not relevant.

Usually, this request originates in a system-supplied Win32 application such as Windisk or Setup when the user connects new device(s) for which the system has no Plug and Play drivers on a SCSI bus dynamically, that is, without shutting down the system. When this request is satisfied, such an application next makes an IOCTL_STORAGE_QUERY_PROPERTY request to the system port driver and examines the returned inquiry data. If the application finds any unclaimed devices of a given type, it then sends one or more IOCTL_STORAGE_FIND_NEW_DEVICES requests to the appropriate storage class drivers.

Note  The SCSI port driver and SCSI miniport driver models may be altered or unavailable in the future. Instead, we recommend using the Storport driver and Storport miniport driver models.

 

Major code

IRP_MJ_DEVICE_CONTROL

Input buffer

None.

Input buffer length

None.

Output buffer

None.

Output buffer length

None.

Status block

The Information field is set to zero. The Status field indicates the results of the operation.

Requirements

Requirement	Value
Header	ntddscsi.h (include Ntddscsi.h)

See also

IOCTL_STORAGE_QUERY_PROPERTY