pool.is_upgraded
================

Returns whether the pool of ``id`` is on the latest version and with all feature flags enabled.

Queries the database for the pool matching the given ``id``, then checks each ZFS feature flag on the pool. Returns ``true`` only when every feature flag is in the ENABLED or ACTIVE state.

Raises a ``ValidationError`` if ``id`` does not match any pool in the database.

*DEPRECATED: this method is scheduled to be removed in v27.*

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    <span class="badge badge-dark value-type">Type: object</span><br/>
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    <span class="badge badge-dark value-type">Type: array</span><br/>
    <span class="badge badge-info no-additional">No Additional Items</span><h4>Tuple Validation</h4>
    <h5>Parameter 1: id</h5>
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    <h4>id</h4><span class="badge badge-dark value-type">Type: integer</span><br/>
    <span class="description"><p>ID of the pool to check upgrade status for.</p>
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    <h4>Result</h4><span class="badge badge-dark value-type">Type: boolean</span><br/>
    <span class="description"><p>Whether the pool has been upgraded to the latest feature flags.</p>
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*Required roles:* POOL_READ