Purpose:   Use the DISPLAY M command to display the status of sides, processors, vector facilities, ICRFs, channel paths, devices, central storage, and expanded storage or to compare the current hardware configuration to the configuration in a CONFIGxx member of SYS1.PARMLIB.

Parameters

M The system is to display information about the system configuration. When you enter DISPLAY M with no operands, the system displays the starting address and length of each portion of the hardware system area (HSA) and the status of all processors, vector facilities, ICRFs, central storage, expanded storage, channel paths, and devices, depending on the type of processor or processor complex.

If the processor complex is partitioned, the system does not provide information about resources that are not part of the configuration on which you issue the command. Message IEE174I gives you the status of resources on the side from which you issue the command and tells you that information about the other side is unavailable. If you are running your processor complex in single-image mode with all resources in one side offline, message IEE174I identifies the other side as being offline but gives you the information about those resources.

For example, to partition a processor complex, you configure offline the resources on one side. To verify that those resources are offline, issue the DISPLAY M=SIDE command. The display lists the side as offline and gives the status of the resources.

The system is to display the online and offline status of channel paths. If you do not specify any channel path, the system displays the status of all channel paths, as well as a status of either "managed and online" or "managed and offline" as part of the support of dynamic channel path management. For a description of the display format, see message IEE174I in OS/390 MVS System Messages, Vol 4 (IEC-IFD).

A single channel path identified by xx. The channel path identifier can have a value from 0 to FF.

A range of channel path identifiers. The starting and ending channel path identifiers can have a value from 0 to FF.

One or more single channel path identifiers, or a combination of single channel path identifiers and ranges of channel path identifiers, each separated by a comma.

CONFIG[(xx)]

The system is to display the differences between the current configuration and the configuration described in member CONFIGxx of SYS1.PARMLIB.

If you omit xx, the system assumes that you mean CONFIG00. For a description of the display format, see message IEE097I in OS/390 MVS System Messages, Vol 4 (IEC-IFD).

You can also start this function from the HCD dialog. For details refer to the section ″Process Display M=CONFIG(xx) Command″ in OS/390 HCD

User’s Guide.

CPUAD or CPU

The system is to display the online or offline status of one or more processors and any Vector Facilities or ICRFs attached to those processors. For a description of the display format, see message IEE174I in OS/390 MVS System Messages, Vol 4 (IEC-IFD). If you do not specify any processor identifiers, the system displays the online or offline status of all processors and any Vector Facilities or ICRFs attached to them.

Note: When you issue the DISPLAY M=CPU command from a PR/SM partition, the system displays the status for the logical processors, vectors, and ICRFs defined to the partition.

(x) A single processor identified by processor identifier. The processor

identifier can have a value of 0 to F.

One or more processor identifiers, each separated by a comma.

DEVICE or DEV

The system is to display the number of online channel paths to devices.

For a description of the display format, see message IEE174I in OS/390 MVS System Messages, Vol 4 (IEC-IFD).

([/]devnum)

A single device number.

([/]lowdevnum-[/]highdevnum)

The lower device number lowdevnum and the upper device number highdevnum of a range of devices.

Device numbers and ranges can be specified in any combination. A device number consists of 3 or 4 hexadecimal digits, optionally preceded by a slash (/).

The system is to display the number of megabytes of expanded storage assigned and available to the system. The display includes: 

If you do not specify any qualifiers, such as (ddddM- ddddM), (list), or (E[=id]), the system displays information for all installed expanded storage. 

Use ESTOR only when your system has expanded storage installed. For a description of the display format, see message IEE174I in OS/390 MVS System Messages, Vol 4 (IEC-IFD).

(ddddM-ddddM)

A range of addresses (in decimal) of expanded storage. ddddM must be a multiple of 64 megabytes, and cannot exceed 4095. The starting and ending addresses must not be the same.

One or more address ranges (in decimal) of expanded storage, each separated by a comma.

(E[=id])

The system is to display the amount of storage in the expanded storage element and identify whether it is online or offline. If you omit the id, the system displays this information for all installed expanded storage elements. If the processor complex is partitioned and the specified expanded storage element is part of another configuration, no information is provided.

The system is to display the highest possible central storage and expanded storage addresses in decimal M bytes (megabytes). Each address indicates the amount of storage available at system initialization. For a description of the display format, see message IEE174I in OS/390 MVS System Messages, Vol 4 (IEC-IFD).

The system is to display the starting address and length of each portion of the hardware system area (HSA). For a description of the display format, see message IEE174I in OS/390 MVS System Messages, Vol 4 (IEC-IFD).

SIDE[(id)]

The system is to display the resources installed in side (physical partition) id, whether the resources are online or offline, and whether the side is online, offline, or unavailable. If the processor complex is partitioned and the specified side is part of another configuration, no information is provided. If the processor complex is running in single-image mode and you do not specify an id, the system displays both sides. If the command is issued from MVS running in a partition, no information is provided.

For a complete description of the display format of DISPLAY M=SIDE, see message IEE174I in OS/390 MVS System Messages, Vol 4 (IEC-IFD).

STORAGE or STOR

The system is to display the status of central storage. The display includes storage offline, storage waiting to go offline and reconfigurable storage sections. For storage waiting to go offline, the system displays:

STORAGE also indicates if a given range of central storage contains data that is shared through the use of the IARVSERV macro.

In this display, storage offline does not include the hardware save area (HSA). To find the location and length of the HSA, enter DISPLAY M=HSA.

If you do not specify (ddddM-ddddM), (list), or (E[= id]), the system displays the status of all central storage. For a description of the display format, see message IEE174I in OS/390 MVS System Messages, Vol 4 (IEC-IFD).

(ddddM-ddddM)

The starting and ending addresses of the central storage for which you want the status display. Specify up to four decimal digits followed by M (megabytes) for each address. The value for each dddd must be a multiple of 4, and cannot exceed 4095. The starting and ending addresses must not be the same.

One or more address ranges (in decimal), each separated by a comma.

(E[=id])

The system is to display the status of the requested storage element.

The display includes the amount of storage (in megabytes) the system owns in each online storage element, the amount of storage available to be configured online, whether the storage element is online or offline. 

If you omit the id, the system displays this information for all installed storage elements.

Note: If the processor complex is partitioned and the specified storage element is part of another configuration, no information is provided.

(parm[,parm]...)

The system is to display the status of each resource you specify as parm.

The list of parms you specify within the parentheses may contain any combination of CHP, CPU, DEV, HIGH, HSA, ESTOR, STOR(E[=id]), and STOR. You must separate the resources in the list with commas and you must enclose the list in parentheses. Do not use blanks within the parentheses and do not try to specify CONFIG in the list.

L=a, cc, cca, name, or name-a

Specifies the display area (a), console (cc), both (cca), console name (name), or both (name-a) where the display will be presented. For cc, you must specify a decimal number from 1 to 99.

If you omit this operand, the display is presented in the first available display area or the message area of the console through which you enter the command (unless routing instructions are in effect; see the MSGRT command later in this chapter).

SWITCH(ssss [,pp[-pp] [,pp[-pp]]...])

The system is to display the status of a specific switch, switch port, or list of switch ports.

For a description of the display format, see message IEE174I in OS/390 MVS System Messages, Vol 4 (IEC-IFD).

The device number of the switch device.

[,pp[-pp] [,pp[-pp]]...]

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Last updated: August 27, 2001.