boot.attach
===========

Attach a disk to the boot pool, turning a stripe into a mirror.

`expand` option will determine whether the new disk partition will be the maximum available or the same size as the current disk.

This method is a job.

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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: dev</h5>
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    <div class="card-body items-definition" id="Call_parameters_items_i0">
    <h4>dev</h4><span class="badge badge-dark value-type">Type: string</span><br/>
    <span class="description"><p>Device name or path to attach to the boot pool.</p>
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    <h5>Parameter 2: options</h5>
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    <h4>options</h4><span class="badge badge-dark value-type">Type: object</span><br/>
    <span class="description"><p>Options for the attach operation.</p>
    </span> <span class="badge badge-info no-additional">No Additional Properties</span>
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    <h4>Expand</h4><span class="badge badge-dark value-type">Type: boolean</span> <span class="badge badge-success default-value">Default: false</span><br/>
    <span class="description"><p>Whether to expand the boot pool after attaching the disk.</p>
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    <h4>Result</h4><span class="badge badge-dark value-type">Type: null</span><br/>
    <span class="description"><p>Returns <code>null</code> when the disk is successfully attached to the boot pool.</p>
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*Required roles:* DISK_WRITE