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load RQDX3/RQDX3 <logical name>

Example:

load RQDX3/RQDX3 DUA
The RQDX3 offers the following configuration parameters, which can be specified with the "set" command:
Status
colourRed
titleTODO
update tables below for PDF export bugs

 

Parameter

Type

Value

address

Numeric

Specifies the CSR address. The address must be a valid QBUS 22-bit wide address in IO space.

Initial value is 017772150 which is the factory setting for the RQDX3 disk controller.

Use the "address" parameter for loading several instances of RQDX3. The "address" parameter value must be unique for every instance of the controller.

max_n_of_units

Numeric

Specifies the maximum number of units supported by the controller. Possible values are 4…9999.

Default is 9999.

container[N]

N=0…9999

Text String

Specifies the location of the disk container. It can be either the name of a ".vdisk" file or the name of a physical disk:

Mapping to host system resourcesDescription
"/dev/sd<L>"

for local fixed disks (IDE, SCSI, SATA). "L" is letter here.

(info) It is also possible to use not a whole disk, but previously created partitions on it. In this case the syntax is the following: "/dev/sd<L><N>" where N is the number of partition to be used. 

"/dev/fd<N>" for floppy drives
"/dev/cdrom<N>", or "/dev/sr<N>" for CD-ROM, DVD drives (IDE, SCSI, …)
"/dev/dm-<N>", "/dev/mapper/mpath<N>", "/dev/mapper/disk<N>"for multipath disks

media_type[N]

N=0…9999

Text String

Overrides default (automatically determined) MSCP media type of the device.

Syntax:

"<device-name>[,<device-type>]"

where:

  • <device-name> is one of “DU”, “DK”, “SCSI”, “DI”, “DSSI”, “DJ”

  • <device-type> is of the form “LLD” or “LLLD”, where “L” is letter from A through Z, and “D” is decimal number from 0 through 99

If not specified, the device name is set to “DU”, and the device type is selected based on disk size.

Initialy not specified.

geometry[N]

N=0…9999

Text String

This formatted string value specifies the explicit geometry of the disk storage element with DSSI node id N and MSCP unit number N. This parameter is not applicable to tape storage elements.

The string format is <X>”/”<Y>[“/”<Z>] where:

  1. X is number of sectors on track;

  2. Y is number of tracks on cylinder;

  3. Z (optional) is the number of cylinders on the unit. If omitted, Z is calculated based on X, Y and the total number of sectors on the unit that reflects the size of the disk storage element;

If this parameter is not set, CHARON-VAX will configure the geometry based on the most probable disk type.

use_io_file_buffering[N]

N=0…9999

Boolean

Enables use of host OS I/O buffering.

Initially set to “false” (buffering disabled).

 

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