lshostvdiskmap

Use the lshostvdiskmap command to display a list of volumes that are mapped to a host. These volumes are the volumes that are recognized by the specified host.

Syntax

Parameters

-nohdr: (Optional) By default, headings are displayed for each column of data in a concise style view, and for each item of data in a detailed style view. The -nohdr parameter suppresses the display of these headings.
Note: If there is no data to be displayed, headings are not displayed.
-delim delimiter: (Optional) By default in a concise view, all columns of data are space-separated. The width of each column is set to the maximum width of each item of data. In a detailed view, each item of data has its own row, and if the headers are displayed, the data is separated from the header by a space. The -delim parameter overrides this behavior. Valid input for the -delim parameter is a 1-byte character. If you enter -delim : on the command line, the colon character (:) separates all items of data in a concise view; for example, the spacing of columns does not occur. In a detailed view, the data is separated from its header by the specified delimiter.
host_id | host_name: (Optional) Specifies the host in terms of its ID or name. The command displays a list of all the volumes that are mapped to the specified host and the Small Computer System Interface (SCSI) ID by which they are mapped. If you do not specify a host ID or name , the command displays a list of all recognized volume mappings.

Description

This command displays a list of volume IDs and names. These volumes are the volumes that are mapped to the specified host; that is, they are visible to the specified host. The SCSI LUN ID is also displayed. This SCSI LUN ID is the ID by which the volume is recognized by the host.

Each volume that is exported by the system is assigned a unique virtual path (VPATH) number. This number identifies the volume and determines which volume corresponds to the volume that the hosts recognize. This procedure must be completed by using the command-line interface.

For a specific volume based on which operating system and multipath software are used, you can use different commands to determine the VPATH serial number. For example, issuing datapath query device finds the VPATH serial number for volumes that are mapped to AIX sddpcm.

Find the host that is defined to the system that corresponds with the host that you are working with.

The worldwide port names (WWPNs) are an attribute of the host bus adapter (HBA). You can find the WWPNs by looking at the device definitions that are stored by your operating system. For example, on AIX® they are in the Object Data Manager (ODM), in Windows® they are in the Device Manager details for the specified HBA.
Verify which host is defined to the system that these ports belong to. The ports are stored as part of the detailed view, so you must list each host in turn by issuing the following command:
lshost host_name | host_id
where host_name | host_id is the name or ID of the host. Check for matching WWPNs.
Note: Consider this when you name your hosts. For example, if the actual host is called orange, also name the host that is defined to the system orange.

When you define the hostname and the vpath serial number to the system, issue the following command:

lshostvdiskmap hostname

where hostname is the name of the host. A list is displayed. Look for the volume UID that matches the vpath serial number and record the volume name or ID.

The command returns the following values:

id: Indicates the host ID in the output for lshostvdiskmap.
name: Indicates the host name in the output for lshostvdiskmap.
SCSI_id: Specifies the SCSI ID for SCSI mappings. This field is blank for NVMe mappings.
host_cluster_id: Indicates the unique ID for a host system.
host_cluster_name: Indicates the unique name for a host system.
vdisk_id: Specifies the UID of the volume or the NVMe namespace GUID.
vdisk_name: Indicates the name of the volume.
vdisk_UID: Indicates the UID of the volume.
IO_group_id: Indicates the ID of the input/output (I/O) group in which the host volume mapping exists.
IO_group_name: Specifies the name of I/O group in which the host volume mapping exists.
protocol: Indicates the protocol that is used by the hosts mapping this volume. The values are scsi or nvme.

An invocation example

lshostvdiskmap -delim : 2

The resulting output:


id:name:SCSI_id:host_id:host_name:vdisk_id:vdisk_name:vdisk_UID:IO_group_id:IO_group_name
2:host2:0:5:vardy1:10:vdisk10:6005076801958001500000000000000A:0:iogrp0
2:host2:1:4:vardy2:11:vdisk11:6005076801958001500000000000000B:1:iogrp1
2:host2:2:3:vardy3:12:vdisk12:6005076801958001500000000000000C:0:iogrp0
2:host2:3:2:vardy4:13:vdisk13:6005076801958001500000000000000D:1:iogrp1
2:host2:4:1:vardy5:14:vdisk14:6005076801958001500000000000000E:1:iogrp0

An invocation example for a SCSI host

lshostvdiskmap host5

The resulting output:

id name  SCSI_id vdisk_id vdisk_name vdisk_UID                        IO_group_id IO_group_name mapping_type host_cluster_id host_cluster_name protocol
5  host5 0       4        vdisk4     6005076400B10001A000000000000004 0           io_grp0       private                                        scsi
5  host5 1       5        vdisk5     6005076400B10001A000000000000005 0           io_grp0       private                                        scsi
5  host5 2       6        vdisk6     6005076400B10001A000000000000006 0           io_grp0       private                                        scsi
5  host5 3       7        vdisk7     6005076400B10001A000000000000007 0           io_grp0       private                                        scsi

An invocation example for an NVMe host

lshostvdiskmap 6

The resulting output:

id name        SCSI_id vdisk_id vdisk_name vdisk_UID                        IO_group_id IO_group_name mapping_type host_cluster_id host_cluster_name protocol
6  nvmeServer6         8        vdisk8     A0000000000000080050760400B10001 0           io_grp0       private                                        nvme
6  nvmeServer6         9        vdisk9     A0000000000000090050760400B10001 0           io_grp0       private                                        nvme
6  nvmeServer6         10       vdisk10    A00000000000000A0050760400B10001 0           io_grp0       private                                        nvme
6  nvmeServer6         11       vdisk11    A00000000000000B0050760400B10001 0           io_grp0       private                                        nvme