Use the lsmdiskgrp command to display a concise list or a detailed
view of storage pools that are visible to the system.
Syntax
lsmdiskgrp [ -filtervalueattribute=value ] [ -nohdr ] [ -bytes ] [ -delimdelimiter ] [ -filtervalue? ] [ { object_id | object_name } ]
Parameters
- -filtervalueattribute=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):
- -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.
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.
- 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_thickowner_type vvol_child_pool
owner_id
owner_namephysical_capacity:1.23TB
physical_free_capacity:1.11TB
shared_resources:yesdata_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_namephysical_capacity:1.63TB
physical_free_capacity:1.52TB
shared_resources:nodata_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_thickowner_type vvol_child_pool
owner_id
owner_namephysical_capacity:1.63TB
physical_free_capacity:1.52TB
shared_resources:nodata_reduction:yes
reclaimable_capacity:20.00MB
used_capacity_before_reduction
used_capacity_after_reduction
overhead_capacity