d353dc622c
Otherwise, the creation method would have failed but the VBD would still exist, violating the principle of least surprise.
96 lines
2.3 KiB
JavaScript
96 lines
2.3 KiB
JavaScript
'use strict'
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const identity = require('lodash/identity.js')
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const ignoreErrors = require('promise-toolbox/ignoreErrors')
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const { Ref } = require('xen-api')
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const isVmRunning = require('./_isVmRunning.js')
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const { warn } = require('@xen-orchestra/log').createLogger('xo:xapi:vbd')
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const noop = Function.prototype
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module.exports = class Vbd {
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async create({
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bootable = false,
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currently_attached = false,
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device = '',
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other_config = {},
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qos_algorithm_params = {},
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qos_algorithm_type = '',
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type = 'Disk',
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unpluggable = false,
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userdevice,
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VDI,
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VM,
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empty = !Ref.isNotEmpty(VDI),
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mode = type === 'Disk' ? 'RW' : 'RO',
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}) {
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if (userdevice == null) {
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const allowed = await this.call('VM.get_allowed_VBD_devices', VM)
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const { length } = allowed
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if (length === 0) {
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throw new Error('no allowed VBD devices')
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}
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if (type === 'CD') {
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// Choose position 3 if allowed.
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userdevice = allowed.includes('3') ? '3' : allowed[0]
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} else {
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userdevice = allowed[0]
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// Avoid userdevice 3 if possible.
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if (userdevice === '3' && length > 1) {
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userdevice = allowed[1]
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}
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}
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}
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const powerState = await this.getField('VM', VM, 'power_state')
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const ifVmSuspended = powerState === 'Suspended' ? identity : noop
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// By default a VBD is unpluggable.
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const vbdRef = await this.call('VBD.create', {
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bootable,
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currently_attached: ifVmSuspended(currently_attached),
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device: ifVmSuspended(device),
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empty,
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mode,
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other_config,
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qos_algorithm_params,
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qos_algorithm_type,
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type,
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unpluggable,
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userdevice,
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VDI,
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VM,
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})
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if (isVmRunning(powerState)) {
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this.callAsync('VBD.plug', vbdRef).catch(warn)
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}
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return vbdRef
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}
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async unplug(ref) {
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// TODO: check if VBD is attached before
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try {
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await this.call('VBD.unplug_force', ref)
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} catch (error) {
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if (error.code !== 'VBD_NOT_UNPLUGGABLE') {
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throw error
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}
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await this.setField('VBD', ref, 'unpluggable', true)
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await this.call('VBD.unplug_force', ref)
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}
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}
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async destroy(ref) {
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await ignoreErrors.call(this.VBD_unplug(ref))
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await this.call('VBD.destroy', ref)
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}
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}
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