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qos settings cache show

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Display list of cache policies

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

Description

The ` qos settings cache show` shows the current caching-policies, class to which they belong, the number of workloads associated with each of the policies, and whether or not they are set to default. The following external-cache policies are available:

  • none - Does not cache any user data or metadata blocks.

  • auto - Read caches all metadata and randomly read user data blocks, and write caches all randomly overwritten user data blocks.

  • all - Read caches all data blocks read and written. It does not do any write caching.

  • all-random_write - Read caches all data blocks read and written. It also write caches randomly overwritten user data blocks.

  • all_read - Read caches all metadata, randomly read, and sequentially read user data blocks.

  • all_read-random_write - Read caches all metadata, randomly read, and sequentially read user data blocks. It also write caches randomly overwritten user data blocks.

  • all_read_random_write - Read caches all metadata, randomly read, sequentially read and randomly written user data.

  • all_read_random_write-random_write - Read caches all metadata, randomly read, sequentially read, and randomly written user data blocks. It also write caches randomly overwritten user data blocks.

  • meta - Read caches only metadata blocks.

  • meta-random_write - Read caches all metadata and write caches randomly overwritten user data blocks.

  • noread-random_write - Write caches all randomly overwritten user data blocks. It does not do any read caching.

  • random_read - Read caches all metadata and randomly read user data blocks.

  • random_read_write - Read caches all metadata, randomly read and randomly written user data blocks.

  • random_read_write-random_write - Read caches all metadata, randomly read, and randomly written user data blocks. It also write caches randomly overwritten user data blocks.

Note Note that in a caching-policy name, a hyphen (-) separates read and write caching policies.

Parameters

{ [-fields <fieldname>,…​]

The input to this parameter is one of the following: {cache-setting|class|default|num-workloads}. If you use this parameter, the command displays information related to the specified input field.

| [-instance ] }

If you use this parameter, the command displays information about the caching-policies in a list format.

[-cache-setting <text>] - Cache Policy Name

The input to this parameter is any one of the above listed caching-policies. If you use this parameter, the command displays information corresponding to the specified caching-policy.

[-class {preset|user-defined|system-defined|autovolume}] - Cache Policy Class

The input to this parameter is one of the following: {undefined|preset|user-defined|system-defined|autovolume}. If you use this parameter, the command displays information corresponding to the specified policy-group class.

[-default {true|false}] - Is Default?

The input to this parameter is true and false. If you use this parameter, the command displays information corresponding to entries that have the specified default value.

[-num-workloads <integer>] - Number Of Workloads With This Policy

The input to this parameter is an integer. If you use this parameter, the command displays information about policy-groups matching the specified number of workloads.

Examples

cluster1::> qos settings cache show
Policy Name  Class        Num Workloads        Default
------------ ------------ -------------        -------
all          preset       0                    false
all-random_write
             preset       0                    false
all_read     preset       0                    false
all_read-random_write
             preset       0                    false
all_read_random_write
             preset       0                    false
all_read_random_write-random_write
             preset       0                    false
auto         preset       2                    false
meta         preset       0                    false
meta-random_write
             preset       0                    false
none         preset       0                    false
noread-random_write
             preset       0                    false
random_read  preset       25                   false
random_read_write
             preset       0                    false
random_read_write-random_write
             preset       28                   true
14 entries were displayed.

Shows QoS settings for the caching policies.