lsmdiskgrp

Use the lsmdiskgrp command to display a concise list or a detailed view of storage pools that are visible to the clustered system (system).

Syntax


>>- lsmdiskgrp -- --+-----------------------------------+-- ---->
                    '- -filtervalue -- attribute=value -'      

>--+----------+-- --+----------+-- ----------------------------->
   '- -nohdr -'     '- -bytes -'      

>--+-----------------------+-- -- --+-----------------+--------->
   '- -delim -- delimiter -'        '- -filtervalue? -'   

>--+---------------+-------------------------------------------><
   +- object_id ---+   
   '- object_name -'

Parameters

-filtervalue attribute=value

(Optional) Specifies a list of one or more filters. Only objects with a value that matches the filter attribute value are returned. If a capacity is specified, the units must also be included.

Note: Some filters allow the use of a wildcard when you enter the command. The following rules apply to the use of wildcards when you use the command-line interface (CLI):

The wildcard character is an asterisk (*).
The command can contain a maximum of one wildcard, which must be the first or last character in the string.
When you use a wildcard, you must enclose the filter entry within double quotation marks (""), as shown in the following command:
```
lsmdiskgrp -filtervalue  "name=md*"
```

-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 no data is available to be displayed, headings are not displayed.

-bytes

(Optional) Specifies that you want the report to display all capacities as bytes.

-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.

object_id | object_name

(Optional) Specifies the name or ID of an object. When you use this parameter, the detailed view of the specific object is returned and any value that is specified by the -filtervalue parameter is ignored. If you do not specify the object_id | object_name parameter, the concise view of all objects that match the filtering requirements that are specified by the -filtervalue parameter are displayed.

-filtervalue?

(Optional) Displays a list of valid filter attributes. The valid filters for the lsmdiskgrp command are the following values:

name
id
mdisk_count
vdisk_count
status
storage_pool_id
easy_tier
easy_tier_status
site_id
site_name
parent_mdisk_grp_id
parent_mdisk_grp_name
child_mdisk_grp_count
type
encrypt
owner_type
data_reduction

For more information about filtering attributes, see Attributes of the -filtervalue parameters.

Description

This command returns a concise list or a detailed view of storage pools visible to the system.

Command output includes values for the following attributes:

status

The state of the MDisk with the highest-priority status in the group, excluding image mode MDisks.

VDisk_count

The number of volume copies that are in the storage pool.

capacity

The total amount of MDisk storage that is assigned to the storage pool.

extent_size

The sizes of the extents for this group are the following values: 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, or 8192 (MB).

free_capacity

The amount of MDisk storage that is immediately available. Additionally, reclaimable_capacity can eventually become available.

real_capacity

The total MDisk storage capacity assigned to volume copies.

Note: It includes reclaimable_capacity.

virtual_capacity

The total host mappable capacity of all volume copies in the storage pool.

used_capacity

The amount of data that is stored on MDisks. Fully-allocated volumes contribute their entire capacity.

Note: It includes reclaimable_capacity.

overallocation

Expressed as a percentage, the ratio of the virtual_capacity value to the capacity. A storage pool overallocation of over 100 is only possible if you configure thin-provisioned volume copies.

warning

This field is a percentage. A warning is generated when the amount of space in the storage pool that is assigned exceeds this level.

easy_tier

This value is set by the user and determines whether Easy Tier® is permitted to manage the pool.

Note: The values are:

on indicates that Easy Tier actively manages the extents (including single-tier storage pools), and the Easy Tier status must be active - unless a license is required.
off indicates that Easy Tier does not actively manage the extents, and the Easy Tier status must be inactive .
auto indicates that the value of Easy Tier status is determined by the number of tiers in a storage pool.
Note: The following values apply to auto:
- on if Easy Tier is licensed or no license is required.
- off if Easy Tier requires a license and none exists.
measure indicates that Easy Tier s collects statistics on that storage pool but does not move any extents in the storage pool.

easy_tier_status

This field indicates whether the Easy Tier functions are active on a storage pool.

active indicates that a pool is being managed by Easy Tier to provide tier management performance-based pool balancing (for example, extents can be moved).
inactive indicates that Easy Tier is inactive.
measured indicates that Easy Tier statistics are being collected but no Easy Tier management is detected.
balanced indicates that a pool is being managed by Easy Tier to provide performance-based pool balancing (for example, extents can be moved).

The following table describes the storage pool Easy Tier settings.

Table 1. Easy Tier settings for storage pools and volumes
Storage pool Easy Tier setting	Number of tiers in the storage pool	Volume copy Easy Tier setting	Volume copy Easy Tier status
Off	One	Off	inactive (see note 1)
Off	One	On	inactive (see note 1)
Off	Two	Off	inactive (see note 1)
Off	Two	On	inactive (see note 1)
Measure	One	Off	measured (see note 2)
Measure	One	On	measured (see note 2)
Measure	Two	Off	measured (see note 2)
Measure	Two	On	measured (see note 2)
Auto	One	Off	measured (see note 2)
Auto	One	On	balanced (see note 3)
Auto	Two	Off	measured (see note 2)
Auto	Two	On	active (see note 4)
On	One	Off	balanced (see note 3)
On	One	On	balanced (see note 3)
On	Two	Off	measured (see note 2)
On	Two	On	active (see note 4)
Notes: When the volume copy status is `inactive`, no Easy Tier functions are enabled for that volume copy. When the volume copy status is `measured`, the Easy Tier function collects usage statistics for the volume but automatic data placement is not active. When the volume copy status is `balanced`, the Easy Tier function enables performance-based pool balancing for that volume copy. When the volume copy status is `active`, the Easy Tier function operates in automatic data placement mode for that volume.

If the volume copy is in image or sequential mode or is being migrated, the volume copy Easy Tier status is measured instead of active.

The default Easy Tier setting for a storage pool is auto, and the default Easy Tier setting for a volume copy is on. Thus, Easy Tier functions except pool performance balancing are disabled for storage pools with a single tier, and that automatic data placement mode is enabled for all striped volume copies in a storage pool with two or more tiers.

tier

Indicates which tier information is being reported. The values are:

tier0_flash
tier1_flash
tier_enterprise
tier_nearline

tier_mdisk_count

Indicates the number of MDisks in the tier.

tier_capacity

The amount of MDisk storage in this tier that is assigned to the storage pool.

tier_free_capacity

The amount of MDisk storage in this tier that has not been assigned.

compression_active

Indicates whether any compressed volume copies are in the storage pool. This field is blank for storage pools that are data reduction pools.

compression_virtual_capacity

Indicates the total virtual capacity for all compressed volume copies in regular storage pools. This field reports 0.00MB for data reduction pools.

compression_compressed_capacity

Indicates the total used capacity for all compressed volume copies in regular storage pools. This field reports 0.00MB for data reduction pools.

compression_uncompressed_capacity

Indicates the total uncompressed used capacity for all compressed volume copies in regular storage pools. This field reports 0.00MB for data reduction pools.

site_id

Indicates the site value for the storage pool group. This numeric value is 1, 2, 3, or blank.

site_name

Indicates the site name for the storage pool. This value is an alphanumeric value or is blank.

parent_mdisk_grp_id

Indicates the storage pool group ID. This value is a numeric string (in the range 0 - 127 characters) or blank.

parent_mdisk_grp_name

Indicates the storage pool group name. This value is an alphanumeric string (in the range 1 - 63 characters) or blank.

child_mdisk_grp_count

Indicates the number of child pools in the parent pools. This value is a numeric string (in the range 0 - 127 characters) or blank.

child_mdisk_grp_capacity

Indicates the total amount of space that is reserved for child pools.

type

Indicates the MDisk group type. The values are parent and child_thick.

encrypt

Indicates whether the data that is stored on the MDisk group is encrypted or not encrypted. The values are:

yes if the pool has an encryption key.
yes if the pool does not have an encryption key (and the pool contains MDisks and all are encrypted).
no if the pool does not have an encryption key (and the pool contains MDisks and at least one is not encrypted).
Blank if the pool does not have an encryption key (and the pool has no MDisks).

The following define the status fields, from lowest to highest priority:

Online: Indicates that the storage pool is online and available.
Offline: Indicates that all paths to the storage pool are lost.
owner_type: Indicates the type of owning object, such as a file system or application. This attribute is an alphanumeric string up to 20 characters in length.
owner_id: Indicates an identifier for the owning object. It is represented by a number and is blank if no owning object exists.
owner_name: Indicates the name for the object that owns the volume. This attribute is an alphanumeric string up to 63 characters in length or is blank.
data_reduction: Indicates that the storage pool is a data reduction pool. The values are yes or no.
physical_capacity: Indicates the total physical capacity of MDisks that belong to this storage pool. For any disks that do not display their physical capacity, displays the logical capacity value. The value must be a number (indicated in units) that is rounded to two decimal places.
physical_free_capacity: Indicates the total free physical capacity of MDisks that belong to this storage pool. For any disks that do not display their physical capacity, displays the logical capacity value. The value must be a number (indicated in units) that is rounded to two decimal places.
shared_resources: Indicates that one or more MDisks in this storage pool shares a resource provisioning group with an MDisk in another storage pool. It indicates cross contamination over-provisioning of physical resources between the storage pools. The value must be yes or no.
reclaimable_capacity: The approximate amount of storage in a data reduction pool that the system can eventually make available.
used_capacity_before_reduction: The data that is stored on non-fully-allocated volume copies in a data reduction pool. It indicates the capacity before compression and deduplication.
used_capacity_after_reduction: The data that is stored on MDisks for non-fully-allocated volume copies in a data reduction pool. It indicates the capacity after compression and deduplication.
deduplication_capacity_saving: The capacity that is saved by deduplication before compression in a data reduction pool.
overhead_capacity: The MDisk capacity that is reserved for internal usage.
compression_opportunity: The total capacity of all compressed volume copies in a data reduction pool.
Note: It excludes deduplication_capacity_saving.
deduplication_opportunity: The total used_capacity_before_reduction of all volume copies in a data reduction pool that are data deduplication enabled.

A concise invocation example

lsmdiskgrp -delim :

The following concise output is displayed:

id:name:status:mdisk_count:vdisk_count:capacity:extent_size:free_capacity:virtual_capacity:used_capacity:
real_capacity:overallocation:warning:easy_tier:easy_tier_status:compression_active:
compression_virtual_capacity:compression_compressed_capacity:compression_uncompressed_capacity:
parent_mdisk_grp_id:parent_mdisk_grp_name:child_mdisk_grp_count:child_mdisk_grp_capacity:type:encrypt:
owner_type:site_id:site_name:data_reduction:used_capacity_before_reduction:used_capacity_after_reduction:
deduplication_capacity_saving:reclaimable_capacity

0:mdiskgrp0:online:2:0:399.00GB:256:399.00GB:0.00MB:0.00MB:
0.00MB:0:0:auto:balanced:no:
0.00MB:0.00MB:0.00MB:
0:mdiskgrp0:0:0.00MB:parent:no:
none:::no:0.00MB:0.00MB:
0.00MB:0.00MB

1:A9000:online:3:2:584.69GB:64:518.69GB:66.00GB:66.00GB:
66.00GB:11:0:auto:balanced:no:
0.00MB:0.00MB:0.00MB:
1:A9000:0:0.00MB:parent:no:
none:::no:0.00MB:0.00MB:
0.00MB:0.00MB

2:Storwize:online:3:2:592.50GB:64:526.50GB:66.00GB:66.00GB:
66.00GB:11:0:auto:balanced:no:
0.00MB:0.00MB:0.00MB:
2:Storwize:0:0.00MB:parent:no:
none:::no:0.00MB:0.00MB:
0.00MB:0.00MB

A detailed invocation example for a storage pool with one tier

lsmdiskgrp -delim : mdiskgrp1

The following output is displayed:

id:1
name:mdiskgrp1
status:online
mdisk_count:4
vdisk_count:6
capacity:200GB
extent_size:16
free_capacity:100GB
virtual_capacity:400.00GB
used_capacity:75.00GB
real_capacity:100.00GB
overallocation:200
warning:80
easy_tier:on
easy_tier_status:active
tier:ssd
tier_mdisk_count:0
tier_capacity: 0.00MB
tier_free_capacity:0.00MB
tier tier0_flash
tier_mdisk_count 1
tier_capacity 1.63TB
tier_free_capacity 1.63TB
tier tier1_flash
tier_mdisk_count 1
tier_capacity 1.63TB
tier_free_capacity 1.63TB
tier tier_enterprise
tier_mdisk_count 0
tier_capacity 0.00MB
tier_free_capacity 0.00MB
tier tier_nearline
tier_mdisk_count 0
tier_capacity 0.00MB
tier_free_capacity 0.00MB
compression_active:yes
compression_virtual_capacity:1000.00MB
compression_compressed_capacity:0.41MB
compression_uncompressed_capacity:512.05MB
site_id:3
site_name:Quorum
parent_mdisk_grp_id:3
parent_mdisk_grp_name:sisfyle
child_mdisk_grp_count:0
child_mdisk_grp_capacity:0.00MB
type:child_thick

owner_type vvol_child_pool
owner_id
owner_name
physical_capacity:1.23TB
physical_free_capacity:1.11TB
shared_resources:yes
data_reduction:yes
reclaimable_capacity:0.00MB
used_capacity_before_reduction:24.03GB
used_capacity_after_reduction:18.17GB
deduplication_capacity_saving:3.22GB
overhead_capacity

A detailed invocation example for a storage pool with two tiers

lsmdiskgrp -delim : mdiskgrp2

The following output is displayed:

id:2
name:mdiskgrp2
status:online
mdisk_count:8
vdisk_count:6
capacity:200GB
extent_size:16
free_capacity:100GB
virtual_capacity:400.00GB
used_capacity:75.00GB
real_capacity:100.00GB
overallocation:200
warning:80
easy_tier:auto
easy_tier_status:active
tier:ssd
tier_mdisk_count:2
tier_capacity:20.00GB
tier_free_capacity:0.00MB
tier tier0_flash
tier_mdisk_count 1
tier_capacity 1.63TB
tier_free_capacity 1.63TB
tier tier1_flash
tier_mdisk_count 1
tier_capacity 1.63TB
tier_free_capacity 1.63TB
tier tier_enterprise
tier_mdisk_count 0
tier_capacity 0.00MB
tier_free_capacity 0.00MB
tier tier_nearline
tier_mdisk_count 0
tier_capacity 0.00MB
tier_free_capacity 0.00MB

tier_mdisk_count:6
tier_capacity:180.00GB
tier_free_capacity:100.00GB
tier:ri_ssd
tier_mdisk_count:
tier_capacity:
tier_free_capacity:
compression_active:yes
compression_virtual_capacity:1000.00MB
compression_compressed_capacity:0.41MB
compression_uncompressed_capacity:512.05MB
site_id:2
site_name:POK
parent_mdisk_grp_id:2
parent_mdisk_grp_name:sysfile
child_mdisk_grp_count:0
child_mdisk_grp_capacity:0.00MB
type:child_thick

owner_type vvol_child_pool
owner_id
owner_name
physical_capacity:1.63TB
physical_free_capacity:1.52TB
shared_resources:no
data_reduction:yes
reclaimable_capacity:15.00MB
used_capacity_before_reduction
used_capacity_after_reduction
overhead_capacity

A detailed invocation example for a storage pool with three tiers

lsmdiskgrp -delim : mdiskgrp1

The following output is displayed:

id:1
name:mdiskgrp1
status:online
mdisk_count:4
vdisk_count:6
capacity:200.00GB
extent_size:16
free_capacity:100.00GB
virtual_capacity:400.00GB
used_capacity:75.00GB
real_capacity:100.00GB
overallocation:200
warning:80
easy_tier:auto
easy_tier_status:inactive
tier tier0_flash
tier_mdisk_count 1
tier_capacity 1.63TB
tier_free_capacity 1.63TB
tier tier1_flash
tier_mdisk_count 1
tier_capacity 1.63TB
tier_free_capacity 1.63TB
tier tier_enterprise
tier_mdisk_count 0
tier_capacity 0.00MB
tier_free_capacity 0.00MB
tier tier_nearline
tier_mdisk_count 0
tier_capacity 0.00MB
tier_free_capacity 0.00MB

compression_active:no
compression_virtual_capacity:0.00MB
compression_compressed_capacity:0.00MB
compression_uncompressed_capacity:0.00MB

parent_mdisk_grp_id:1
parent_mdisk_grp_name:filesys
child_mdisk_grp_count:0
child_mdisk_grp_capacity:0.00MB
type:child_thick

owner_type vvol_child_pool
owner_id
owner_name
physical_capacity:1.63TB
physical_free_capacity:1.52TB
shared_resources:no
data_reduction:yes
reclaimable_capacity:20.00MB
used_capacity_before_reduction
used_capacity_after_reduction
overhead_capacity