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volume snapshot show

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Display a list of snapshots

Availability: This command is available to cluster and Vserver administrators at the admin privilege level.

Description

The volume snapshot show command displays information about Snapshot copies. The command output depends on the parameters specified with the command. If no parameters are specified, the command displays a table with the following information about all the available Snapshot copies:

  • Vserver name

  • Volume name

  • Snapshot copy name

  • State

  • Size

  • Percentage of total blocks in the parent volume

  • Percentage of used blocks in the parent volume

To display a detailed list view with additional information, run the command and select the -instance view. In addition to the above mentioned information about the Snapshot copies, the detailed list view provides the following additional information:

  • Creation time

  • Snapshot busy

  • List of the Snapshot copy's owners

  • Comment associated with the Snapshot copy

  • SnapMirror Label associated with the Snapshot copy

  • 7-Mode Snapshot

  • Constituent Snapshot

  • Expiry Time

  • SnapLock Expiry Time

At the advanced or higher privilege level the detailed view provides the following additional information:

  • Snapshot copy's Dataset ID

  • Snapshot copy's master Dataset ID

  • Number of consistency points in the Snapshot copy

  • Internal status of the Snapshot copy

  • File system version

  • File system block format

  • Physical Snap ID

  • Logical Snap ID

  • Database record owner

  • Snapshot tags

  • Instance UUID

  • Version UUID

  • Node

  • AFS used size

  • Compression savings size

  • Deduplication savings size

  • Vbn0 savings size

  • Reserved size

  • Logical used size

  • Performance metadata size

  • Status of FlexGroup Qtree support in the Snapshot copy

Note For Snapshot copies whose parent volume is a FlexGroup, some information is not available and empty values will be displayed. This information includes:

  • State

  • Size

  • Percentage of total blocks in the parent volume

  • Percentage of used blocks in the parent volume

    All information is available for Snapshot copies whose parent volume is a FlexGroup Constituent.

At the admin and advanced privilege level, Snapshot copies whose parent volume is a FlexGroup Constituent are not displayed by default. To display these, run the commmand and set the is-constituent to true . At the diagnostic or higher privilege level, all Snapshot copies are displayed by default.

The list view is automatically enabled if a single Snapshot copy is specified by using the -vserver , -volume and -snapshot options together.

A preformatted query for displaying the time-related information is available by specifying the -time format specifier. This displays a table that contains the following fields for all the available Snapshot copies:

  • Vserver name

  • Volume name

  • Snapshot copy name

  • Creation time

By using the -fields option you can choose to print only the certain fields in the output. This presents the selected fields in a table view. This is ideal when you want additional information to be different from the information that is provided by the default table view, but would like it in a format which is visually easy to compare.

You can specify additional parameters to display the information that matches only those parameters. For example, to display information only about Snapshot copies of the load-sharing volumes, run the command with the -volume-type LS parameter. If you specify multiple filtering parameters, only those Snapshot copies that match all the specified parameters are displayed.

Parameters

{ [-fields <fieldname>,…​]

If you specify the -fields <fieldname>, …​ parameter, the command output also includes the specified field or fields. You can use '-fields ?' to display the fields to specify.

| [-time ]

If the -time format is specified, the command displays time related information about all entries.

| [-instance ] }

If you specify the -instance parameter, the command displays detailed information about all fields.

[-vserver <vserver name>] - Vserver

If you use this parameter, the Snapshot copies located only on the specified Vserver will be displayed.

[-volume <volume name>] - Volume

If you use this parameter only Snapshot copies located on the specified volume will be displayed.

[-snapshot <snapshot name>] - Snapshot

If you use this parameter only Snapshot copies matching the specified name will be displayed.

[-dsid <integer>] - Snapshot Data Set ID (privilege: advanced)

If this parameter is specified, the command displays information only about the Snapshot copy that has the specified data set ID.

[-msid <integer>] - Snapshot Master Data Set ID (privilege: advanced)

If this parameter is specified, the command displays information only about the Snapshot copy that has the specified master data set ID.

[-create-time <Date>] - Creation Time

If this parameter is specified, the command displays information only about the Snapshot copies that match the specified creation time.

[-busy {true|false}] - Snapshot Busy

If this parameter is specified, the command displays information only about the Snapshot copies that have the specified busy status.

[-owners <text>,…​] - List of Owners

If this parameter is specified, the command displays information only about the Snapshot copies that are owned by the specified list of owners.

[-size {<integer>[KB|MB|GB|TB|PB]}] - Snapshot Size

If this parameter is specified, the command displays information only about the Snapshot copies that have the specified size. The size is specified as a character specifying the unit of measurement after a number specifying the size in the mentioned unit of measurement: k (kilobytes), m (megabytes), g (gigabytes), or t (terabytes). If the unit of measurement is not specified, bytes are used as the unit, and the specified number is rounded up to the nearest 4 KB. You may also use an inequality such as >10 MB as input.

[-blocks <percent>] - Percentage of Total Blocks

If this parameter is specified, the command displays information only about the Snapshot copies that have the specified percentage of total blocks on their parent volumes. You may also use an inequality such as >10 as input.

[-usedblocks <percent>] - Percentage of Used Blocks

If this parameter is specified, the command displays information only about the Snapshot copies that have the specified percentage of used blocks on their parent volumes. You may also use an inequality such as >10 as input.

[-cpcount <integer>] - Consistency Point Count (privilege: advanced)

If this parameter is specified, the command displays information only about the Snapshot copies that have the specified number of consistency points. You may also use an inequality such as <100 as input.

[-comment <text>] - Comment

If this parameter is specified, the command displays information only about the Snapshot copies that have the specified comment text. You may also specify an inequality such as !"-" as input.

[-fs-version <text>] - File System Version (privilege: advanced)

If you use this parameter the only Snapshot copies displayed are those that were created when the file system was of a specific release. This parameter is helpful especially when you need to upgrade to newer software release and want to know the Snapshot copies that will be impacted by the upgrade process.

[-logical-snap-id <integer>] - Logical Snap ID (privilege: advanced)

If you use this parameter only those Snapshot copies which have the specified logical snapshot ID will be shown. Logical snapshot ids are internal implementation details of volume Snapshot copies.

[-is-7-mode {true|false}] - 7-Mode Snapshot

If you use this parameter only those Snapshot copies which have the specified value are shown. This value is true for the Snapshot copies that exist on the volume that was in 7-mode configuration and then transitioned to a clustered configuration. In such a scenario, the volume is in a clustered configuration and the existing Snapshot copies are still in the 7-mode configuration.

[-snapmirror-label <text>] - Label for SnapMirror Operations

If you use this parameter, only those Snapshot copies that have the specified SnapMirror Label value are shown.

[-state {valid|invalid|partial|pre-conversion}] - Snapshot State

If you use this parameter only those Snapshot copies which have the specified state will be shown.

[-is-constituent {true|false}] - Constituent Snapshot

If you use this parameter, only those Snapshot copies whose parent volume is a constituent volume of a FlexGroup will be shown.

[-node <nodename>] - Node (privilege: advanced)

If you use this parameter only those Snapshot copies that are located on the specified storage system are shown.

[-inofile-version <integer>] - Snapshot Inofile Version (privilege: advanced)

If this parameter is specified, the command displays information only about the Snapshot copies whose inode files are at the specified version.

[-expiry-time <MM/DD/YYYY HH:MM:SS>] - Expiry Time

If you use this parameter only those Snapshot copies that have the specified expiry time are shown.

[-compression-type {none|secondary|adaptive}] - Compression Type (privilege: advanced)

If you use this parameter only those Snapshot copies that have the specified compression type are shown.

[-snaplock-expiry-time {MM/DD/YYYY HH:MM:SS [{+|-}hh:mm] | infinite}] - SnapLock Expiry Time

If you use this parameter only those Snapshot copies that have the specified snaplock expiry time are shown.

[-application-io-size <Application I/O Size>] - Application IO Size (privilege: advanced)

If you use this parameter only those Snapshot copies that have the specified application IO size are shown.

[-is-qtree-caching-enabled {true|false}] - Is Qtree Caching Support Enabled (privilege: advanced)

If you use this parameter, only those Snapshot copies of FlexGroups or origin of a FlexCache volumes that have the specified Qtree caching status are shown.

Examples

The following example displays default information about all Snapshot copies of a volume named vol1:

cluster1::> volume snapshot show -volume vol1
                                                                 ---Blocks---
Vserver  Volume   Snapshot                                  Size Total% Used%
-------- -------- ------------------------------------- -------- ------ -----
cluster1 vol1
                  one                                       68KB     0%   33%
                  two                                       72KB     0%   34%
2 entries were displayed.

The following example displays Snapshot copies which are older than 1 hour, limiting the output to wanted fields:

cluster1::> volume snapshot show -create-time <1h -fields create-time, size
vserver  volume snapshot create-time              size
-------- ------ -------- ------------------------ ----
cluster1 vol1   one      Mon Nov 17 10:23:42 2014 68KB
cluster1 vol1   two      Mon Nov 17 10:23:44 2014 72KB
2 entries were displayed.

The following example displays detailed information about a specific Snapshot copy, using the 'snap' alias:

cluster1::> snap show -volume vol1 -snapshot one -instance
Vserver: cluster1
                               Volume: vol1
                             Snapshot: one
                 Snapshot Data Set ID: 4294968322
          Snapshot Master Data Set ID: 6442451970
                        Creation Time: Mon Nov 17 10:23:42 2014
                        Snapshot Busy: false
                       List of Owners: -
                        Snapshot Size: 68KB
           Percentage of Total Blocks: 0%
            Percentage of Used Blocks: 33%
              Consistency Point Count: 4
                              Comment: -
                  File System Version: 9.0
                      7-Mode Snapshot: false
      Label for SnapMirror Operations: -
                 Constituent Snapshot: false
                                 Node: node1
             Snapshot Inofile Version: 3
                          Expiry Time: -
                 SnapLock Expiry Time: -