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Configuration parameters

The KGPSA-CA PCI FC adapter emulation has the following configuration parameters:

host_bus_location

Parameter host_bus_location

Type Text String

Value

Pass through mode only!

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

Parameter

wwid[N]

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

Type Text String

Value

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

Parameter

container[N]

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

Type

Text String

Value

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

Physical disk

"/dev/sd<L>", where "L" is letter, for example "/dev/sdb"
"/dev/disk/by-id/..." - addressing by the disk ID, for example "/dev/disk/by-id/ata-ST1000DM003-9YN162_S1D01QJ4"
"/dev/disk/by-label/..." - addressing by the disk label, for example "/dev/disk/by-label/MyStorage"

"/dev/disk/by-uuid/..." - addressing by the disk UUID, for example "/dev/disk/by-uuid/0e808a2f-cdd3-4944-a245-f729ffd73882"
Please note that existing data on such a disk may be destroyed, depending on how it is used in the emulator.

Note
"/dev/sd<L>" addressing is not persistent, so it is strongly recommended to use "/dev/disk/by-id/wwn-*" syntax instead to refer the disk by its WWID - especially in the enviroments utilizing FC and SAN storages.

These disks must not be formatted by the host OS.

Example:

set FGA container[0]="/dev/disk/by-id/ata-ST1000DM003-9YN162_S1D01QJ4"

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"

.Loop (virtual block) devices

Loop (virtual block) devices
- "/dev/loop<N>"
  Example:
  set FGA container[100]="/dev/loop0"
Multipath disk
- "/dev/dm-<N>"
- "/dev/mapper/mpath<N>"
- "/dev/mapper/disk<N>"
  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"
  .
File representing a physical disk of the HP Alpha system (disk image)
- [<drive>":\"<path-name>”\”]<file-name>[“.vdisk”]
  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

Parameter

media_type[N]

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

Type

Text String

Value

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

Parameter

removable[N]

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

Type Boolean

Value

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

Parameter

geometry[N]

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

Type

Text String

Value

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

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

Parameter

use_io_file_buffering[N]

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

Type

Boolean

Value

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

Note that this caching has a significant effect only in case of mapping to disk containers, not physcial physical drives.

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

io_queue_depth

Parameter

io_queue_depth[N]

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

Type Numeric

Value

Specifies KGPSA I/O requests (read or write) for a given unit in a range 2..128

Setting this parameter enables KZPBA enables KGPSA instance to run up-to the specifiied specified numbers of I/O requests (read or write) for unit N in parallel, thus improving the performance.

The default value set by controller is optimal for most of the cases. It may be needed to enlarge this number if guest OS I/O queue for a certain unit contains too much pending entries. In this case the value should be equal to an average size of the queue, collected statistically.

Please do not set this parameter without clear understanding of the purpose.

By default parallel execution of I/O requests is disabled.

Example:

set FGA io_queue_depth[603]=4

min_n_of_threads

Parameter

min_n_of_threads

Type Numeric

Value

Instructs KGPSA I/O to reserve a given number of working threads in a range 1..64, thus improving the performance.

All units of KGPSA instance share the I/O threads.

The default value is equal to number of units plus 2.

For optimization it is possible to set this parameter to sum of the "io_queue_depth" parameters for each unit plus 2. This assumption seems optimal for most of the cases.

Please do not set this parameter without clear understanding the purpose.

Example:

set FGA min_n_of_threads=16

...

Command Description

fc rescan {/verbose}

Scans connected SAN using FC adapters, discovers FC ports, storage controllers, logical units and then builds volatile FC database.

The "/verbose" qualifier enables FC communication trace on console (for diagnostic and troubleshooting).

fc show {adapter | port | device}

Displays corresponding part of volatile FC database.

fc set {boot | dump} udid <X>

Fills the environment variables wwid0..wwid3 and n1..n4 to identify path(s) to logical unit with the specified UDID.

These variables are later used by "INIT" to create device database entries and by OpenVMS/Tru64 to get access to boot and dump disks.

This command does NOT make any change to other environment variables.to identify path(s) to logical unit with the specified UDID.

These variables are later used by "INIT" to create device database entries and by OpenVMS/Tru64 to get access to boot and dump disks.

This command does NOT make any change to other environment variables.

fc set {boot | dump} wwid <X>

Fills the environment variables wwid0..wwid3 and n1..n4 to identify path(s) to logical unit with the specified WWID.

These variables are later used by "INIT" to create device database entries and by OpenVMS/Tru64 to get access to boot and dump disks.

This command does NOT make any change to other environment variables.

This parameter is useful if UDID is absent.

Note

Only right part of the displayed WWID is used for specification, for example:

P00>>>fc res
polling for units on kgpsa0, slot 2, bus 0, hose 0 ...
pga0.0.0.2.0 PGA0 F/W Rev 2.72A2
WWN 1000-0000-0263-0040
fabric WWN 2003-0060-0263-0040
directory WWN 20fc-0060-0263-0040
port 020100 CED 8GSH 0 F88V
WWN 5000-1fe0-0000-0bf1
lun 0000000000000000 DEC HSG80CCL V88F
UDID:-1 WWID:01000010:6000-1fe0-0000-0bf0-3030-3030-373f-3f3f
lun 0000000000000100 COMPAQ RZ1ED 0000
UDID:-1 WWID:01000010:6000-1fe0-0000-0bf0-3030-3030-3030-3030
P00>>>fc set boot wwid 6000-1fe0-0000-0bf0-3030-3030-3030-3030

fc clear

Clears environment variables wwid0...wwid3 and n1..n4, which automatically disable (but do NOT delete) device database entries representing FC attached devices.

This command does NOT affect volatile FC database.

...

P00>>>fc show devices

     UDID:100 WWID:01000010:6000-1fe1-000b-6bf0-0009-0440-4014-0038 (ev:none)
                        via adapter     via fc_port         con
[0]                     pga0.0.0.5.0    5000-1fe1-000b-6bf1 no (ev:none)
[1]                     pga0.0.0.5.0    5000-1fe1-000b-6bf4 yes (ev:none)
[2]                     pgb0.0.0.6.0    5000-1fe1-000b-6bf2 no (ev:none)
[3]                     pgb0.0.0.6.0    5000-1fe1-000b-6bf3 yes (ev:none)
     UDID:200 WWID:01000010:6000-1fe1-000b-6bf0-0009-9081-1283-0074 (ev:none)
                        via adapter     via fc_port         con
[4]                     pga0.0.0.5.0    5000-1fe1-000b-6bf1 no (ev:none)
[5]                     pga0.0.0.5.0    5000-1fe1-000b-6bf4 yes (ev:none)
[6]                     pgb0.0.0.6.0    5000-1fe1-000b-6bf2 no (ev:none)
[7]                     pgb0.0.0.6.0    5000-1fe1-000b-6bf3 yes (ev:none)
     UDID:300 WWID:01000010:6000-1fe1-000b-6bf0-0009-9081-1283-007b (ev:none)
                        via adapter     via fc_port         con
[8]                     pga0.0.0.5.0    5000-1fe1-000b-6bf1 no (ev:none)
[9]                     pga0.0.0.5.0    5000-1fe1-000b-6bf4 yes (ev:none)
[10]                    pgb0.0.0.6.0    5000-1fe1-000b-6bf2 no (ev:none)
[11]                    pgb0.0.0.6.0    5000-1fe1-000b-6bf3 yes (ev:none)
     UDID:400 WWID:01000010:6000-1fe1-000b-6bf0-0009-9081-1283-0080 (ev:none)
                        via adapter     via fc_port         con
[12]                    pga0.0.0.5.0    5000-1fe1-000b-6bf1 no (ev:none)
[13]                    pga0.0.0.5.0    5000-1fe1-000b-6bf4 yes (ev:none)
[14]                    pgb0.0.0.6.0    5000-1fe1-000b-6bf2 no (ev:none)
[15]                    pgb0.0.0.6.0    5000-1fe1-000b-6bf3 yes (ev:none)
     UDID:108 WWID:01000010:6000-1fe1-000b-6bf0-0009-0440-4014-0039 (ev:none)
                        via adapter     via fc_port         con
[16]                    pga0.0.0.5.0    5000-1fe1-000b-6bf1 yes (ev:none)
[17]                    pga0.0.0.5.0    5000-1fe1-000b-6bf4 no (ev:none)
[18]                    pgb0.0.0.6.0    5000-1fe1-000b-6bf2 yes (ev:none)
[19]                    pgb0.0.0.6.0    5000-1fe1-000b-6bf3 no (ev:none)
   UDID:208 WWID:01000010:6000-1fe1-000b-6bf0-0009-0440-4014-003a (ev:none)
                        via adapter     via fc_port         con
[20]                    pga0.0.0.5.0    5000-1fe1-000b-6bf1 yes (ev:none)
[21]                    pga0.0.0.5.0    5000-1fe1-000b-6bf4 no (ev:none)
[22]                    pgb0.0.0.6.0    5000-1fe1-000b-6bf2 yes (ev:none)
[23]                    pgb0.0.0.6.0    5000-1fe1-000b-6bf3 no (ev:none)

P00>>>fc set boot udid 400

P00>>>INIT

initializing ...

polling for units on kzpba0, slot 4, bus 0, hose 0 ...
pka0.0.0.4.0 PKA0 Q-Logic/ISP PCI SCSI HBA

polling for units on kgpsa0, slot 5, bus 0, hose 0 ...
   pga0.0.0.5.0         PGA0            WWN 1000-0000-C92E-97C9
      fabric                            WWN 2003-0060-6920-4682
         directory                      WWN 20fc-0060-6920-4682
         port 021400                    WWN 5000-1fe1-000b-6bf1
            lun 0000000000000100        DEC     HSG80           V88F
         UDID:100       WWID:01000010:6000-1fe1-000b-6bf0-0009-0440-4014-0038
            lun 0000000000000200        DEC     HSG80 V88F
         UDID:200 WWID:01000010:6000-1fe1-000b-6bf0-0009-9081-1283-0074
            lun 0000000000000300        DEC HSG80 V88F
         UDID:300       WWID:01000010:6000-1fe1-000b-6bf0-0009-9081-1283-007b
            lun 0000000000000400    DEC HSG80 V88F
         UDID:400       WWID:01000010:6000-1fe1-000b-6bf0-0009-9081-1283-0080
            lun 0000000000006c00        DEC     HSG80 V88F
         UDID:108       WWID:01000010:6000-1fe1-000b-6bf0-0009-0440-4014-0039
            lun 0000000000006d00    DEC HSG80 V88F
         UDID:208       WWID:01000010:6000-1fe1-000b-6bf0-0009-0440-4014-003a
            lun 0000000000000000
         port 021500                    WWN 5000-1fe1-000b-6bf4
            lun 0000000000000100        DEC     HSG80 V88F
         UDID:100       WWID:01000010:6000-1fe1-000b-6bf0-0009-0440-4014-0038
            lun 0000000000000200        DEC     HSG80 V88F
         UDID:200       WWID:01000010:6000-1fe1-000b-6bf0-0009-9081-1283-0074
            lun 0000000000000300        DEC HSG80 V88F
         UDID:300 WWID:01000010:6000-1fe1-000b-6bf0-0009-9081-1283-007b
            lun 0000000000000400        DEC HSG80 V88F
         UDID:400 WWID:01000010:6000-1fe1-000b-6bf0-0009-9081-1283-0080
            lun 0000000000006c00        DEC HSG80 V88F
         UDID:108 WWID:01000010:6000-1fe1-000b-6bf0-0009-0440-4014-0039
            lun 0000000000006d00        DEC HSG80 V88F
         UDID:208 WWID:01000010:6000-1fe1-000b-6bf0-0009-0440-4014-003a
            lun 0000000000000000

polling for units on kgpsa1, slot 6, bus 0, hose 0 ...
   pgb0.0.0.6.0         PGB0    WWN 1000-0000-C92D-8D00
      fabric                            WWN 2003-0060-6920-45ff
         directory                      WWN 20fc-0060-6920-45ff
         port 011400                    WWN 5000-1fe1-000b-6bf2
            lun 0000000000000100        DEC     HSG80           V88F
         UDID:100 WWID:01000010:6000-1fe1-000b-6bf0-0009-0440-4014-0038
            lun 0000000000000200        DEC     HSG80           V88F
         UDID:200 WWID:01000010:6000-1fe1-000b-6bf0-0009-9081-1283-0074
            lun 0000000000000300        DEC     HSG80           V88F
         UDID:300 WWID:01000010:6000-1fe1-000b-6bf0-0009-9081-1283-007b
            lun 0000000000000400        DEC     HSG80           V88F
         UDID:400 WWID:01000010:6000-1fe1-000b-6bf0-0009-9081-1283-0080
            lun 0000000000006c00        DEC     HSG80           V88F
         UDID:108 WWID:01000010:6000-1fe1-000b-6bf0-0009-0440-4014-0039
            lun 0000000000006d00        DEC     HSG80           V88F
         UDID:208 WWID:01000010:6000-1fe1-000b-6bf0-0009-0440-4014-003a
            lun 0000000000000000
         port 011500                    WWN 5000-1fe1-000b-6bf3
            lun 0000000000000100        DEC     HSG80           V88F
         UDID:100 WWID:01000010:6000-1fe1-000b-6bf0-0009-0440-4014-0038
            lun 0000000000000200        DEC     HSG80           V88F
         UDID:200 WWID:01000010:6000-1fe1-000b-6bf0-0009-9081-1283-0074
            lun 0000000000000300        DEC     HSG80           V88F
         UDID:300 WWID:01000010:6000-1fe1-000b-6bf0-0009-9081-1283-007b
            lun 0000000000000400        DEC     HSG80           V88F
         UDID:400 WWID:01000010:6000-1fe1-000b-6bf0-0009-9081-1283-0080
            lun 0000000000006c00        DEC     HSG80           V88F
         UDID:108 WWID:01000010:6000-1fe1-000b-6bf0-0009-0440-4014-0039
            lun 0000000000006d00        DEC     HSG80           V88F
         UDID:208 WWID:01000010:6000-1fe1-000b-6bf0-0009-0440-4014-003a
            lun 0000000000000000
         port 011100                    failed port login

... enter console

P00>>>SHOW DEV

sys0.0.0.0.0            SYS0          System ROOT Device
ewa0.0.0.3.0            EWA0          00-51-71-F5-8E-D8
pka0.0.0.4.0            PKA0          Q-Logic/ISP PCI SCSI HBA
pga0.0.0.5.0            PGA0          WWN 1000-0000-C92E-97C9
pgb0.0.0.6.0    PGB0          WWN 1000-0000-C92D-8D00
pqa0.0.0.15.0           PQA0          ALi 1553C Integrated IDE Controller
pqb0.0.1.15.0 PQB0          ALi 1553C Integrated IDE Controller
dqa0.0.0.15.0           DQA0          Virtual ATAPI - TEAC DW-224E-V
dka0.0.0.4.0            DKA0          Virtual SCSI Disk (C)SRI
dga400.1001.0.5.0       $1$DGA400     DEC     HSG80           V88F
dga400.1002.0.5.0       $1$DGA400     DEC     HSG80           V88F
dgb400.1003.0.6.0       $1$DGA400     DEC     HSG80           V88F
dgb400.1004.0.6.0       $1$DGA400     DEC     HSG80           V88F

P00>>>BOOT $1$DGA400

dga400.1001.0.5.0: failed to open device
(boot dga400.1002.0.5.0)
jumping to bootstrap code

OpenVMS (TM) Alpha Operating System, Version V7.3-2
© Copyright 1976-2003 Hewlett-Packard Development Company, L.P.
%SMP-I-CPUTRN, CPU #02 has joined the active set.
%SMP-I-CPUTRN, CPU #03 has joined the active set.
%SMP-I-CPUTRN, CPU #01 has joined the active set.
Please enter date and time (DD-MMM-YYYY HH:MM)

...

Versions Compared

Old Version 10

New Version Current

Key

Configuration parameters

host_bus_location

wwid

container

media_type

removable

geometry

use_io_file_buffering

io_queue_depth

min_n_of_threads