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Parameter

Type

Value

host_bus_location

Text String

Establish connection between virtual DEC-KGPSA-CA PCI FC adapter and physical EMULEX LightPulse PCI/PCI-X/PCIe FC adapter (pass through mode)

Syntax:

load KGPSA <controller name> host_bus_location="/dev/kgpsa<X>"

Example:

load KGPSA FGA host_bus_location="/dev/kgpsa0"

wwid[N]

N is 0..32766 (no more than 255 units)

Text String

Sets WWID for emulated KGPSA adapter unit.

Syntax:

set <controller name> wwid[unit-number]="XXXX-XXXX-XXXX-XXXX-XXXX-XXXX-XXXX-XXXX"

Example:

set FGA wwid[2]="6008-05F3-0005-2950-BF8E-0B86-A0C7-0001"

container[N]

N is 0..32766 (no more than 255 units)

Text String

Possible values of the parameter are strings in one of the following forms:

Mapping Description

"/dev/sd<L>"

Mapping to physical disk. "L" is letter here. Be careful not to destroy all the information from the disk dedicated to CHARON-AXP by mistake.

These disks must not be formatted by the host OS.

Example:

set FGA container[0]="/dev/sdb"

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.

Example:

set FGA container[0]="/dev/sdc3"

"/dev/dm-<N>"
"/dev/mapper/mpath<N>"
"/dev/mapper/disk<N>"

Mapping to multipath disk. Be careful not to destroy all the information from the disk dedicated to CHARON-AXP by mistake.

These disks must not be formatted by the host OS.

Example:

set FGA container[200]="/dev/dm-0"

[<drive>":\"<path-name>”\”]<file-name>[“.vdisk”]

Mapping to the file representing a physical disk of the HP Alpha system (disk image).

These files can be created from scratch with "mkdskcmd" utility. Data and OS disk backups are transferred from the original system via tapes or network and restored into these container files.

Mapping may also include the full path (recommended), for example: "/my_disks/my_boot_disk.vdisk"

Example:

set FGA container[401]="my_dka401.vdisk"

This parameter is initially not set, thus creating NO storage elements on the controller.

media_type[N]

N is 0..32766 (no more than 255 units)

Text String

Instructs CHARON-AXP to use the supplied value as the PRODUCT field in the FC INQUIRY data returned to a software running on virtual HP Alpha system in response to FC INQUIRY command.

If not specified, CHARON-AXP attempts to guess the FC INQUIRY data based on virtual FC device type and underlying container (which is specified in the corresponding container configuration parameter).

Initially is not specified.

Example:

set FGA media_type[0]="HSZ70"

removable[N]

N is 0..32766 (no more than 255 units)

Boolean

When set to "true", the removable configuration parameter instructs CHARON-AXP to report the corresponding virtual FC device as removable.

By default the removable configuration parameter is set to "false".

Example:

set FGA removable[400]=true

geometry [N]

N is 0..32766 (no more than 255 units)

Text String

This formatted string value specifies the explicit geometry of the disk storage element.

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

Parameter	Description
X	The number of sectors per track
Y	The number of tracks per cylinder
Z	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. This is an optional parameter.
B	The total size of the disk (in blocks) reported to the guest OS. If omitted it is calculated automatically. This is an optional parameter.

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

Initially not set.

Example:

set FGA geometry[201] = ”255/255”

Info

It is possiblle to specify each parameter independently of another one. The following syntax is used for that:

set FGA geometry[300]="*,*,*,16777210"

use_io_file_buffering[N]

N is 0..32766 (no more than 255 units)

Boolean

When set to "true", instructs CHARON-AXP to enable host operating system I/O cache on reading/writing operations.

When enabled, host operating system I/O cache may significantly improve I/O performance of the virtual system. At the same time maintaining I/O cache requires additional host resources (CPU and memory) which may negatively affect overall performance of the virtual system.

Initially is set to "false".

Example:

set FGA use_io_file_buffering[300]=true

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Versions Compared

Old Version 13

New Version 14

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