Class: OsVm::Machine

Inherits:
Object
  • Object
show all
Defined in:
lib/osvm/machine.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, config, tmpdir, sockdir, default_timeout: 600, hash_base: '', interactive_console: false) ⇒ Machine

Returns a new instance of Machine.

Parameters:

  • name (String)
  • config (MachineConfig)
  • tmpdir (String)
  • sockdir (String)
  • default_timeout (Integer) (defaults to: 600)
  • hash_base (String) (defaults to: '')
  • interactive_console (Boolean) (defaults to: false)


23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
# File 'lib/osvm/machine.rb', line 23

def initialize(name, config, tmpdir, sockdir, default_timeout: 600, hash_base: '', interactive_console: false)
  @name = name
  @config = config
  @tmpdir = tmpdir
  @sockdir = sockdir
  @default_timeout = default_timeout
  @hash_base = hash_base
  @interactive_console = interactive_console
  @start_kernel_params = []
  @running = false
  @shell_up = false
  @shared_dir = SharedDir.new(self)
  @shared_filesystems = {
    shared_dir.fs_name => shared_dir.host_path
  }.merge(config.shared_filesystems)
  @virtiofsd_pids = []
  @mutex = Mutex.new

  FileUtils.mkdir_p(tmpdir)
  FileUtils.mkdir_p(sockdir)
  @log = MachineLog.new(File.join(tmpdir, "#{name}-log.log"))
end

Instance Attribute Details

#configObject (readonly, protected)

Returns the value of attribute config.



440
441
442
# File 'lib/osvm/machine.rb', line 440

def config
  @config
end

#console_threadObject (readonly, protected)

Returns the value of attribute console_thread.



440
441
442
# File 'lib/osvm/machine.rb', line 440

def console_thread
  @console_thread
end

#hash_baseObject (readonly, protected)

Returns the value of attribute hash_base.



440
441
442
# File 'lib/osvm/machine.rb', line 440

def hash_base
  @hash_base
end

#logObject (readonly, protected)

Returns the value of attribute log.



440
441
442
# File 'lib/osvm/machine.rb', line 440

def log
  @log
end

#nameString (readonly)

Returns:

  • (String)


10
11
12
# File 'lib/osvm/machine.rb', line 10

def name
  @name
end

#qemu_pidObject (readonly, protected)

Returns the value of attribute qemu_pid.



440
441
442
# File 'lib/osvm/machine.rb', line 440

def qemu_pid
  @qemu_pid
end

#qemu_readObject (readonly, protected)

Returns the value of attribute qemu_read.



440
441
442
# File 'lib/osvm/machine.rb', line 440

def qemu_read
  @qemu_read
end

#qemu_reaperObject (readonly, protected)

Returns the value of attribute qemu_reaper.



440
441
442
# File 'lib/osvm/machine.rb', line 440

def qemu_reaper
  @qemu_reaper
end

#shared_dirObject (readonly, protected)

Returns the value of attribute shared_dir.



440
441
442
# File 'lib/osvm/machine.rb', line 440

def shared_dir
  @shared_dir
end

#shared_filesystemsObject (readonly, protected)

Returns the value of attribute shared_filesystems.



440
441
442
# File 'lib/osvm/machine.rb', line 440

def shared_filesystems
  @shared_filesystems
end

#shellObject (readonly, protected)

Returns the value of attribute shell.



440
441
442
# File 'lib/osvm/machine.rb', line 440

def shell
  @shell
end

#shell_serverObject (readonly, protected)

Returns the value of attribute shell_server.



440
441
442
# File 'lib/osvm/machine.rb', line 440

def shell_server
  @shell_server
end

#sockdirObject (readonly, protected)

Returns the value of attribute sockdir.



440
441
442
# File 'lib/osvm/machine.rb', line 440

def sockdir
  @sockdir
end

#start_kernel_paramsArray<String> (readonly)

Kernel parameters passed to #start

Returns:

  • (Array<String>)


14
15
16
# File 'lib/osvm/machine.rb', line 14

def start_kernel_params
  @start_kernel_params
end

#tmpdirObject (readonly, protected)

Returns the value of attribute tmpdir.



440
441
442
# File 'lib/osvm/machine.rb', line 440

def tmpdir
  @tmpdir
end

#virtiofsd_pidsObject (readonly, protected)

Returns the value of attribute virtiofsd_pids.



440
441
442
# File 'lib/osvm/machine.rb', line 440

def virtiofsd_pids
  @virtiofsd_pids
end

Instance Method Details

#all_fail(*cmds) ⇒ Array<Array<[Integer, String]>>

Execute all commands and check that they all fail

Parameters:

  • cmds (String)

Returns:

  • (Array<Array<[Integer, String]>>)


286
287
288
# File 'lib/osvm/machine.rb', line 286

def all_fail(*cmds)
  cmds.map { |cmd| fails(cmd) }
end

#all_succeed(*cmds) ⇒ Array<Array<[Integer, String]>>

Execute all commands and check that they all succeed

Parameters:

  • cmds (String)

Returns:

  • (Array<Array<[Integer, String]>>)


279
280
281
# File 'lib/osvm/machine.rb', line 279

def all_succeed(*cmds)
  cmds.map { |cmd| succeeds(cmd) }
end

#booted?Boolean

Returns:

  • (Boolean)


203
204
205
# File 'lib/osvm/machine.rb', line 203

def booted?
  shell_up?
end

#cleanupMachine

Cleanup machine state

Returns:



181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
# File 'lib/osvm/machine.rb', line 181

def cleanup
  begin
    File.unlink(shell_socket_path)
  rescue Errno::ENOENT
    # ignore
  end

  shared_filesystems.each_key do |fs_name|
    File.unlink(virtiofs_socket_path(fs_name))
  rescue Errno::ENOENT
    # ignore
  end

  self
end

#console_log_pathObject (protected)



623
624
625
# File 'lib/osvm/machine.rb', line 623

def console_log_path
  File.join(tmpdir, "#{name}-console.log")
end

#destroyMachine

Destroy the machine

Returns:



155
156
157
158
159
160
# File 'lib/osvm/machine.rb', line 155

def destroy
  log.destroy
  shared_dir.destroy
  destroy_disks
  self
end

#destroy_disksMachine

Destroy file-backed disks

Disks are destroyed automatically or when #destroy is called. #destroy_disks can be used to reset storage between machine runs.

Returns:



168
169
170
171
172
173
174
175
176
177
# File 'lib/osvm/machine.rb', line 168

def destroy_disks
  config.disks.each do |disk|
    next if disk.type != 'file'

    path = disk_path(disk.device)
    FileUtils.rm_f(path)
  end

  self
end

#disk_path(path) ⇒ Object (protected)



627
628
629
630
631
632
633
634
635
# File 'lib/osvm/machine.rb', line 627

def disk_path(path)
  resolved = path.gsub('{machine}', name)

  if resolved.start_with?('/')
    resolved
  else
    File.join(tmpdir, resolved)
  end
end

#execute(cmd, timeout: @default_timeout) ⇒ Array<Integer, String>

Execute a command

Parameters:

  • cmd (String)
  • timeout (Integer) (defaults to: @default_timeout)

Returns:

  • (Array<Integer, String>)

    exit status and output



217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
# File 'lib/osvm/machine.rb', line 217

def execute(cmd, timeout: @default_timeout)
  start unless running?
  wait_for_shell

  real_timeout = [timeout, 5].max
  vm_command = "set -euo pipefail; #{cmd}"
  timeout_command = "timeout #{real_timeout}"

  # For unknown reason, the first character written to the shell is cut. Sometimes
  # more characters are lost. We therefore prefix the executed command with whitespace
  # which can be lost.
  workaround = ' ' * 10

  shell.write("#{workaround}#{timeout_command} bash -c #{Shellwords.escape(vm_command)} 2>&1 | (base64 -w 0; echo)\n")
  log.execute_begin(cmd)

  output = Base64.decode64(read_shell_output(timeout: real_timeout + 5, command: vm_command))

  shell.write("#{workaround}echo ${PIPESTATUS[0]}\n")
  status = read_shell_output(timeout: 60, command: 'echo ${PIPESTATUS[0]}').strip.to_i

  if timeout && status == 124
    log.execute_end(-1, output)
    raise TimeoutError, "Timeout occured while running command '#{cmd}', " \
                        "output: #{output.inspect}"
  end

  log.execute_end(status, output)
  [status, output]
end

#fails(cmd, timeout: @default_timeout) ⇒ Array<Integer, String>

Execute command and check that it fails

Parameters:

  • cmd (String)
  • timeout (Integer) (defaults to: @default_timeout)

Returns:

  • (Array<Integer, String>)


266
267
268
269
270
271
272
273
274
# File 'lib/osvm/machine.rb', line 266

def fails(cmd, timeout: @default_timeout)
  status, output = execute(cmd, timeout:)

  if status == 0
    raise CommandSucceeded, "Command '#{cmd}' succeeds with status #{status}. Output:\n #{output}"
  end

  [status, output]
end

#finalizeObject



46
47
48
# File 'lib/osvm/machine.rb', line 46

def finalize
  log.close
end

#inspectObject



434
435
436
# File 'lib/osvm/machine.rb', line 434

def inspect
  "#<#{self.class.name}:#{object_id} name=#{name}>"
end

#join(timeout: @default_timeout) ⇒ Object

Block until the machine stops



104
105
106
107
# File 'lib/osvm/machine.rb', line 104

def join(timeout: @default_timeout)
  qemu_reaper.join(timeout)
  nil
end

#killMachine

Kill the machine

Returns:



125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
# File 'lib/osvm/machine.rb', line 125

def kill
  unless running?
    log.kill('NONE')
    return
  end

  log.kill('TERM')

  begin
    Process.kill('TERM', qemu_pid)
  rescue Errno::ESRCH
    warn "Unable to kill machine #{name} using SIGTERM"
  end

  return if qemu_reaper.join(60)

  log.kill('KILL')

  begin
    Process.kill('KILL', qemu_pid)
  rescue Errno::ESRCH
    warn "Unable to kill machine #{name} using SIGKILL"
  end

  qemu_reaper.join
  self
end

#mkdir(path) ⇒ Machine

Create a directory inside the machine

Parameters:

  • path (String)

    path within the machine

Returns:



402
403
404
405
# File 'lib/osvm/machine.rb', line 402

def mkdir(path)
  succeeds("mkdir \"#{path}\"")
  self
end

#mkdir_p(path) ⇒ Machine

Create a directory inside the machine

Parameters:

  • path (String)

    path within the machine

Returns:



410
411
412
413
# File 'lib/osvm/machine.rb', line 410

def mkdir_p(path)
  succeeds("mkdir -p \"#{path}\"")
  self
end

#osctl_json(cmd) ⇒ Hash

osctl command without ‘osctl`, output is returned as JSON

Parameters:

  • cmd (String)

Returns:

  • (Hash)


359
360
361
362
# File 'lib/osvm/machine.rb', line 359

def osctl_json(cmd)
  status, output = succeeds("osctl -j #{cmd}")
  JSON.parse(output)
end

#prepare_disksObject (protected)



585
586
587
588
589
590
591
592
593
# File 'lib/osvm/machine.rb', line 585

def prepare_disks
  config.disks.each do |disk|
    if disk.type != 'file' || !disk.create || File.exist?(disk_path(disk.device))
      next
    end

    `truncate -s#{disk.size} #{disk_path(disk.device)}`
  end
end

#pull_file(src, preserve: false) ⇒ String

Pull file from the machine to the host

Parameters:

  • src (String)

    file within the machine

Returns:

  • (String)

    path to the file on the host



430
431
432
# File 'lib/osvm/machine.rb', line 430

def pull_file(src, preserve: false)
  shared_dir.pull_file(src, preserve:)
end

#push_file(src, dst, preserve: false, mkpath: false) ⇒ Machine

Push file from the host to the machine

Parameters:

  • src (String)

    file on the host

  • dst (String)

    file within the machine

  • preserve (Boolean) (defaults to: false)
  • mkpath (Boolean) (defaults to: false)

Returns:



421
422
423
424
425
# File 'lib/osvm/machine.rb', line 421

def push_file(src, dst, preserve: false, mkpath: false)
  mkdir_p(File.dirname(dst)) if mkpath
  shared_dir.push_file(src, dst)
  self
end

#qemu_command(kernel_params: []) ⇒ Object (protected)



444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
# File 'lib/osvm/machine.rb', line 444

def qemu_command(kernel_params: [])
  all_kernel_params = [
    'console=ttyS0',
    "init=#{config.toplevel}/init"
  ] + config.kernel_params + kernel_params

  [
    "#{config.qemu}/bin/qemu-kvm",
    '-name', "os-vm-#{name}",
    '-m', config.memory.to_s,
    '-cpu', 'host',
    '-smp', "cpus=#{config.cpus},cores=#{config.cpu.cores},threads=#{config.cpu.threads},sockets=#{config.cpu.sockets}",
    '--no-reboot',
    '-device', 'ahci,id=ahci'
  ] + config.networks.map(&:qemu_options).flatten + [
    '-drive', "index=0,id=drive1,file=#{config.squashfs},readonly=on,media=cdrom,format=raw,if=virtio",
    '-chardev', "socket,id=shell,path=#{shell_socket_path}",
    '-device', 'virtio-serial',
    '-device', 'virtconsole,chardev=shell',
    '-kernel', config.kernel,
    '-initrd', config.initrd,
    '-append', all_kernel_params.join(' '),
    '-nographic'
  ] + qemu_disk_options + qemu_virtiofs_options + config.extra_qemu_options
end

#qemu_disk_optionsObject (protected)



470
471
472
473
474
475
476
477
478
479
# File 'lib/osvm/machine.rb', line 470

def qemu_disk_options
  ret = []

  config.disks.each_with_index do |disk, i|
    ret << '-drive' << "id=disk#{i},file=#{disk_path(disk.device)},if=none,format=raw"
    ret << '-device' << "ide-hd,drive=disk#{i},bus=ahci.#{i}"
  end

  ret
end

#qemu_virtiofs_optionsObject (protected)



481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
# File 'lib/osvm/machine.rb', line 481

def qemu_virtiofs_options
  ret = []

  shared_filesystems.each_with_index do |fs, i|
    name, = fs
    ret << '-chardev' << "socket,id=char#{i},path=#{virtiofs_socket_path(name)}"
    ret << '-device' << "vhost-user-fs-pci,queue-size=1024,chardev=char#{i},tag=#{name}"
  end

  if ret.any?
    ret << '-object' << "memory-backend-file,id=m0,size=#{config.memory}M,mem-path=/dev/shm,share=on"
    ret << '-numa' << 'node,memdev=m0'
  end

  ret
end

#read_nonblock(io) ⇒ Object (protected)



674
675
676
677
678
# File 'lib/osvm/machine.rb', line 674

def read_nonblock(io)
  io.read_nonblock(4096)
rescue IO::WaitReadable
  ''
end

#read_shell_output(timeout:, command:) ⇒ Object (protected)



654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
# File 'lib/osvm/machine.rb', line 654

def read_shell_output(timeout:, command:)
  t1 = Time.now
  buffer = ''

  loop do
    if t1 + timeout < Time.now
      raise UnrecoverableTimeoutError, "Timeout occured while running command '#{command}', " \
                                       "buffer contents: #{buffer.inspect}"
    end

    rs = shell.wait_readable(1)
    next unless rs

    buffer << read_nonblock(shell)
    break if buffer.end_with?("\n")
  end

  buffer
end

#run_console_threadObject (protected)



565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
# File 'lib/osvm/machine.rb', line 565

def run_console_thread
  @console_thread = Thread.new do
    console_log = File.open(console_log_path, 'w')

    begin
      loop do
        rs = qemu_read.wait_readable
        next unless rs

        console_log.write(read_nonblock(qemu_read))
        console_log.flush
      end
    rescue EOFError
      console_log.close
    rescue IOError
      # pass
    end
  end
end

#run_qemu_reaper(pid) ⇒ Object (protected)



530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
# File 'lib/osvm/machine.rb', line 530

def run_qemu_reaper(pid)
  @qemu_reaper = Thread.new do
    Process.wait(pid)
    log.exit($?.exitstatus)

    @qemu_pid = nil

    if @qemu_read
      @qemu_read.close
      @qemu_read = nil
    end

    if @console_thread
      console_thread.join
      @console_thread = nil
    end

    shell_server.close
    @shell_server = nil

    if shell
      shell.close
      @shell = nil
    end

    stop_virtiofs

    cleanup

    @qemu_reaper = nil
    @shell_up = false
    @running = false
  end
end

#running?Boolean

Returns:

  • (Boolean)


198
199
200
# File 'lib/osvm/machine.rb', line 198

def running?
  @running
end

#shell_socket_pathObject (protected)



619
620
621
# File 'lib/osvm/machine.rb', line 619

def shell_socket_path
  socket_path("#{name}-shell.sock")
end

#shell_up?Boolean (protected)

Returns:

  • (Boolean)


650
651
652
# File 'lib/osvm/machine.rb', line 650

def shell_up?
  @shell_up
end

#socket_path(socket) ⇒ Object (protected)



645
646
647
648
# File 'lib/osvm/machine.rb', line 645

def socket_path(socket)
  @socket_hash ||= Digest::SHA256.hexdigest([hash_base, name].join)[0..7]
  File.join(sockdir, "#{@socket_hash}-#{socket}")
end

#start(kernel_params: []) ⇒ Machine

Start the machine

Parameters:

  • kernel_params (Array<String>) (defaults to: [])

Returns:



53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
# File 'lib/osvm/machine.rb', line 53

def start(kernel_params: [])
  if running?
    raise 'Machine already started'
  end

  log.start
  prepare_disks

  # Clear-out left-over socket
  begin
    File.unlink(shell_socket_path)
  rescue Errno::ENOENT
    # ignore
  end

  @shell_server = UNIXServer.new(shell_socket_path)

  shared_dir.setup
  start_virtiofs
  sleep(1)

  qemu_kwargs = {}

  unless @interactive_console
    @qemu_read, w = IO.pipe

    qemu_kwargs = {
      in: :close,
      out: w,
      err: w
    }
  end

  @start_kernel_params = kernel_params

  @qemu_pid = Process.spawn(
    *qemu_command(kernel_params:),
    **qemu_kwargs
  )
  w.close unless @interactive_console
  run_qemu_reaper(qemu_pid)

  @running = true

  run_console_thread unless @interactive_console

  @shell = @shell_server.accept
  self
end

#start_virtiofsObject (protected)



498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
# File 'lib/osvm/machine.rb', line 498

def start_virtiofs
  shared_filesystems.each do |name, path|
    f = File.open(virtiofs_log_path(name), 'w')

    virtiofsd_pids << Process.spawn(
      File.join(config.virtiofsd, 'bin/virtiofsd'),
      '--socket-path', virtiofs_socket_path(name),
      '--shared-dir', path,
      '--cache', 'never',
      in: :close,
      out: f,
      err: f
    )

    f.close
  end
end

#stop(timeout: @default_timeout) ⇒ Machine

Stop the machine

Parameters:

  • timeout (Integer) (defaults to: @default_timeout)

Returns:



112
113
114
115
116
117
118
119
120
121
# File 'lib/osvm/machine.rb', line 112

def stop(timeout: @default_timeout)
  log.stop
  execute('poweroff -f')

  if qemu_reaper.join(timeout).nil?
    raise UnrecoverableTimeoutError, "Timeout while stopping machine #{name}"
  end

  self
end

#stop_virtiofsObject (protected)



516
517
518
519
520
521
522
523
524
525
526
527
528
# File 'lib/osvm/machine.rb', line 516

def stop_virtiofs
  virtiofsd_pids.delete_if do |pid|
    Process.kill('TERM', pid)
    false
  rescue Errno::ESRCH
    true
  end

  virtiofsd_pids.delete_if do |pid|
    Process.wait(pid)
    true
  end
end

#succeeds(cmd, timeout: @default_timeout) ⇒ Array<Integer, String>

Execute command and check that it succeeds

Parameters:

  • cmd (String)
  • timeout (Integer) (defaults to: @default_timeout)

Returns:

  • (Array<Integer, String>)


252
253
254
255
256
257
258
259
260
# File 'lib/osvm/machine.rb', line 252

def succeeds(cmd, timeout: @default_timeout)
  status, output = execute(cmd, timeout:)

  if status != 0
    raise CommandFailed, "Command '#{cmd}' failed with status #{status}. Output:\n #{output}"
  end

  [status, output]
end

#virtiofs_log_path(mount_name) ⇒ Object (protected)



641
642
643
# File 'lib/osvm/machine.rb', line 641

def virtiofs_log_path(mount_name)
  File.join(tmpdir, "#{name}-fs-#{mount_name}.log")
end

#virtiofs_socket_path(mount_name) ⇒ Object (protected)



637
638
639
# File 'lib/osvm/machine.rb', line 637

def virtiofs_socket_path(mount_name)
  socket_path("#{name}-fs-#{mount_name}.sock")
end

#wait_for_boot(timeout: @default_timeout) ⇒ Object

Wait until the system has booted

Parameters:

  • timeout (Integer) (defaults to: @default_timeout)


209
210
211
# File 'lib/osvm/machine.rb', line 209

def wait_for_boot(timeout: @default_timeout)
  wait_for_shell(timeout:)
end

#wait_for_osctl_pool(name, timeout: @default_timeout) ⇒ Machine

Wait for pool to be imported into osctld

Parameters:

  • name (String)
  • timeout (Integer) (defaults to: @default_timeout)

Returns:



377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
# File 'lib/osvm/machine.rb', line 377

def wait_for_osctl_pool(name, timeout: @default_timeout)
  t1 = Time.now
  cur_timeout = timeout

  loop do
    status, output = wait_until_succeeds(
      "osctl pool show -H -o state #{name}",
      timeout: cur_timeout
    )

    return self if output.strip == 'active'

    cur_timeout = timeout - (Time.now - t1)

    if cur_timeout <= 0
      raise TimeoutError, "Timeout occured while waiting for pool #{name.inspect} to become active"
    end

    sleep(1)
  end
end

#wait_for_service(name) ⇒ Machine

Wait for runit system service to start

Parameters:

  • name (String)

Returns:



351
352
353
354
# File 'lib/osvm/machine.rb', line 351

def wait_for_service(name)
  wait_until_succeeds("sv check #{name}")
  self
end

#wait_for_shell(timeout: @default_timeout) ⇒ Object (protected)



595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
# File 'lib/osvm/machine.rb', line 595

def wait_for_shell(timeout: @default_timeout)
  raise "machine #{name} is not running" unless running?
  return if shell_up?

  t1 = Time.now
  buffer = ''

  loop do
    if t1 + timeout < Time.now
      raise TimeoutError, 'Timeout occured while waiting for shell'
    end

    rs = shell.wait_readable(1)
    next unless rs

    buffer << read_nonblock(shell)
    next unless buffer.include?("test-shell-ready\n")

    @shell_up = true
    shared_dir.mount
    return
  end
end

#wait_for_shutdown(timeout: @default_timeout) ⇒ Machine

Wait until the machine shuts down

Parameters:

  • timeout (Integer) (defaults to: @default_timeout)

Returns:



334
335
336
337
338
339
340
341
342
343
344
345
346
# File 'lib/osvm/machine.rb', line 334

def wait_for_shutdown(timeout: @default_timeout)
  t1 = Time.now

  loop do
    return self unless running?

    if t1 + timeout < Time.now
      raise TimeoutError, 'Timeout occured while waiting for shutdown'
    end

    sleep(1)
  end
end

#wait_for_zpool(name, timeout: @default_timeout) ⇒ Machine

Wait for zpool

Parameters:

  • name (String)
  • timeout (Integer) (defaults to: @default_timeout)

Returns:



368
369
370
371
# File 'lib/osvm/machine.rb', line 368

def wait_for_zpool(name, timeout: @default_timeout)
  wait_until_succeeds("zpool list #{name}", timeout:)
  self
end

#wait_until_fails(cmd, timeout: @default_timeout) ⇒ Array<Integer, String>

Wait until command fails

Returns:

  • (Array<Integer, String>)


309
310
311
312
313
314
315
316
317
318
319
320
321
322
# File 'lib/osvm/machine.rb', line 309

def wait_until_fails(cmd, timeout: @default_timeout)
  t1 = Time.now
  cur_timeout = timeout

  loop do
    status, output = execute(cmd, timeout: cur_timeout)
    return [status, output] if status != 0

    cur_timeout = timeout - (Time.now - t1)
    raise TimeoutError, "Timeout occured while running command '#{cmd}'" if cur_timeout <= 0

    sleep(1)
  end
end

#wait_until_online(timeout: @default_timeout) ⇒ Machine

Wait until network is operational, including DNS

Returns:



326
327
328
329
# File 'lib/osvm/machine.rb', line 326

def wait_until_online(timeout: @default_timeout)
  wait_until_succeeds('curl --head https://vpsadminos.org', timeout:)
  self
end

#wait_until_succeeds(cmd, timeout: @default_timeout) ⇒ Array<Integer, String>

Wait until command succeeds

Returns:

  • (Array<Integer, String>)


292
293
294
295
296
297
298
299
300
301
302
303
304
305
# File 'lib/osvm/machine.rb', line 292

def wait_until_succeeds(cmd, timeout: @default_timeout)
  t1 = Time.now
  cur_timeout = timeout

  loop do
    status, output = execute(cmd, timeout: cur_timeout)
    return [status, output] if status == 0

    cur_timeout = timeout - (Time.now - t1)
    raise TimeoutError, "Timeout occured while running command '#{cmd}'" if cur_timeout <= 0

    sleep(1)
  end
end