Synnefo » snf-ganeti

# Copyright (C) 2007 Google Inc.

#

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 2 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful, but

# WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

# General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

# 02110-1301, USA.

"""Instance related QA tests.

"""

import re

import time

from ganeti import utils

from ganeti import constants

import qa_config

import qa_utils

import qa_error

from qa_utils import AssertEqual, AssertNotEqual, StartSSH

def _GetDiskStatePath(disk):

  return "/sys/block/%s/device/state" % disk

def _GetGenericAddParameters():

  return ['--os-size=%s' % qa_config.get('os-size'),

          '--swap-size=%s' % qa_config.get('swap-size'),

          '--memory=%s' % qa_config.get('mem')]

def _DiskTest(node, disk_template):

  master = qa_config.GetMasterNode()

  instance = qa_config.AcquireInstance()

  try:

    cmd = (['gnt-instance', 'add',

            '--os-type=%s' % qa_config.get('os'),

            '--disk-template=%s' % disk_template,

            '--node=%s' % node] +

           _GetGenericAddParameters())

    cmd.append(instance['name'])

    AssertEqual(StartSSH(master['primary'],

                         utils.ShellQuoteArgs(cmd)).wait(), 0)

    return instance

  except:

    qa_config.ReleaseInstance(instance)

    raise

def TestInstanceAddWithPlainDisk(node):

  """gnt-instance add -t plain"""

  return _DiskTest(node['primary'], 'plain')

def TestInstanceAddWithLocalMirrorDisk(node):

  """gnt-instance add -t local_raid1"""

  return _DiskTest(node['primary'], 'local_raid1')

def TestInstanceAddWithRemoteRaidDisk(node, node2):

  """gnt-instance add -t remote_raid1"""

  return _DiskTest("%s:%s" % (node['primary'], node2['primary']),

                   'remote_raid1')

def TestInstanceRemove(instance):

  """gnt-instance remove"""

  master = qa_config.GetMasterNode()

  cmd = ['gnt-instance', 'remove', '-f', instance['name']]

  AssertEqual(StartSSH(master['primary'],

                       utils.ShellQuoteArgs(cmd)).wait(), 0)

  qa_config.ReleaseInstance(instance)

def TestInstanceStartup(instance):

  """gnt-instance startup"""

  master = qa_config.GetMasterNode()

  cmd = ['gnt-instance', 'startup', instance['name']]

  AssertEqual(StartSSH(master['primary'],

                       utils.ShellQuoteArgs(cmd)).wait(), 0)

def TestInstanceShutdown(instance):

  """gnt-instance shutdown"""

  master = qa_config.GetMasterNode()

  cmd = ['gnt-instance', 'shutdown', instance['name']]

  AssertEqual(StartSSH(master['primary'],

                       utils.ShellQuoteArgs(cmd)).wait(), 0)

def TestInstanceReinstall(instance):

  """gnt-instance reinstall"""

  master = qa_config.GetMasterNode()

  cmd = ['gnt-instance', 'reinstall', '-f', instance['name']]

  AssertEqual(StartSSH(master['primary'],

                       utils.ShellQuoteArgs(cmd)).wait(), 0)

def TestInstanceFailover(instance):

  """gnt-instance failover"""

  master = qa_config.GetMasterNode()

  cmd = ['gnt-instance', 'failover', '--force', instance['name']]

  AssertEqual(StartSSH(master['primary'],

                       utils.ShellQuoteArgs(cmd)).wait(), 0)

def TestInstanceInfo(instance):

  """gnt-instance info"""

  master = qa_config.GetMasterNode()

  cmd = ['gnt-instance', 'info', instance['name']]

  AssertEqual(StartSSH(master['primary'],

                       utils.ShellQuoteArgs(cmd)).wait(), 0)

def TestInstanceList():

  """gnt-instance list"""

  master = qa_config.GetMasterNode()

  cmd = ['gnt-instance', 'list']

  AssertEqual(StartSSH(master['primary'],

                       utils.ShellQuoteArgs(cmd)).wait(), 0)

def TestInstanceExport(instance, node):

  """gnt-backup export"""

  master = qa_config.GetMasterNode()

  cmd = ['gnt-backup', 'export', '-n', node['primary'], instance['name']]

  AssertEqual(StartSSH(master['primary'],

                       utils.ShellQuoteArgs(cmd)).wait(), 0)

  return qa_utils.ResolveInstanceName(instance)

def TestInstanceImport(node, newinst, expnode, name):

  """gnt-backup import"""

  master = qa_config.GetMasterNode()

  cmd = (['gnt-backup', 'import',

          '--disk-template=plain',

          '--no-ip-check',

          '--src-node=%s' % expnode['primary'],

          '--src-dir=%s/%s' % (constants.EXPORT_DIR, name),

          '--node=%s' % node['primary']] +

         _GetGenericAddParameters())

  cmd.append(newinst['name'])

  AssertEqual(StartSSH(master['primary'],

                       utils.ShellQuoteArgs(cmd)).wait(), 0)

def TestBackupList(expnode):

  """gnt-backup list"""

  master = qa_config.GetMasterNode()

  cmd = ['gnt-backup', 'list', '--nodes=%s' % expnode['primary']]

  AssertEqual(StartSSH(master['primary'],

                       utils.ShellQuoteArgs(cmd)).wait(), 0)

def _TestInstanceDiskFailure(instance, node, node2, onmaster):

  """Testing disk failure."""

  master = qa_config.GetMasterNode()

  sq = utils.ShellQuoteArgs

  instance_full = qa_utils.ResolveInstanceName(instance)

  node_full = qa_utils.ResolveNodeName(node)

  node2_full = qa_utils.ResolveNodeName(node2)

  cmd = ['gnt-node', 'volumes', '--separator=|', '--no-headers',

         '--output=node,phys,instance',

         node['primary'], node2['primary']]

  output = qa_utils.GetCommandOutput(master['primary'], sq(cmd))

  # Get physical disk names

  re_disk = re.compile(r'^/dev/([a-z]+)\d+$')

  node2disk = {}

  for line in output.splitlines():

    (node_name, phys, inst) = line.split('|')

    if inst == instance_full:

      if node_name not in node2disk:

        node2disk[node_name] = []

      m = re_disk.match(phys)

      if not m:

        raise qa_error.Error("Unknown disk name format: %s" % disk)

      name = m.group(1)

      if name not in node2disk[node_name]:

        node2disk[node_name].append(name)

  if [node2_full, node_full][int(onmaster)] not in node2disk:

    raise qa_error.Error("Couldn't find physical disks used on "

                         "%s node" % ["secondary", "master"][int(onmaster)])

  # Check whether nodes have ability to stop disks

  for node_name, disks in node2disk.iteritems():

    cmds = []

    for disk in disks:

      cmds.append(sq(["test", "-f", _GetDiskStatePath(disk)]))

    AssertEqual(StartSSH(node_name, ' && '.join(cmds)).wait(), 0)

  # Get device paths

  cmd = ['gnt-instance', 'activate-disks', instance['name']]

  output = qa_utils.GetCommandOutput(master['primary'], sq(cmd))

  devpath = []

  for line in output.splitlines():

    (_, _, tmpdevpath) = line.split(':')

    devpath.append(tmpdevpath)

  # Get drbd device paths

  cmd = ['gnt-instance', 'info', instance['name']]

  output = qa_utils.GetCommandOutput(master['primary'], sq(cmd))

  pattern = (r'\s+-\s+type:\s+drbd,\s+.*$'

             r'\s+primary:\s+(/dev/drbd\d+)\s+')

  drbddevs = re.findall(pattern, output, re.M)

  halted_disks = []

  try:

    # Deactivate disks

    cmds = []

    for name in node2disk[[node2_full, node_full][int(onmaster)]]:

      halted_disks.append(name)

      cmds.append(sq(["echo", "offline"]) + " >%s" % _GetDiskStatePath(name))

    AssertEqual(StartSSH([node2, node][int(onmaster)]['primary'],

                         ' && '.join(cmds)).wait(), 0)

    # Write something to the disks and give some time to notice the problem

    cmds = []

    for disk in devpath:

      cmds.append(sq(["dd", "count=1", "bs=512", "conv=notrunc",

                      "if=%s" % disk, "of=%s" % disk]))

    for _ in (0, 1, 2):

      AssertEqual(StartSSH(node['primary'], ' && '.join(cmds)).wait(), 0)

      time.sleep(3)

    for name in drbddevs:

      cmd = ['drbdsetup', name, 'show']

      AssertEqual(StartSSH(node['primary'], sq(cmd)).wait(), 0)

    # For manual checks

    cmd = ['gnt-instance', 'info', instance['name']]

    AssertEqual(StartSSH(master['primary'], sq(cmd)).wait(), 0)

  finally:

    # Activate disks again

    cmds = []

    for name in halted_disks:

      cmds.append(sq(["echo", "running"]) + " >%s" % _GetDiskStatePath(name))

    AssertEqual(StartSSH([node2, node][int(onmaster)]['primary'],

                         '; '.join(cmds)).wait(), 0)

  if onmaster:

    for name in drbddevs:

      cmd = ['drbdsetup', name, 'detach']

      AssertEqual(StartSSH(node['primary'], sq(cmd)).wait(), 0)

  else:

    for name in drbddevs:

      cmd = ['drbdsetup', name, 'disconnect']

      AssertEqual(StartSSH(node2['primary'], sq(cmd)).wait(), 0)

  # Make sure disks are up again

  #cmd = ['gnt-instance', 'activate-disks', instance['name']]

  #AssertEqual(StartSSH(master['primary'], sq(cmd)).wait(), 0)

  # Restart instance

  cmd = ['gnt-instance', 'shutdown', instance['name']]

  AssertEqual(StartSSH(master['primary'], sq(cmd)).wait(), 0)

  #cmd = ['gnt-instance', 'startup', '--force', instance['name']]

  cmd = ['gnt-instance', 'startup', instance['name']]

  AssertEqual(StartSSH(master['primary'], sq(cmd)).wait(), 0)

  cmd = ['gnt-cluster', 'verify']

  AssertEqual(StartSSH(master['primary'], sq(cmd)).wait(), 0)

def TestInstanceMasterDiskFailure(instance, node, node2):

  """Testing disk failure on master node."""

  print qa_utils.FormatError("Disk failure on primary node cannot be "

                             "tested due to potential crashes.")

  # The following can cause crashes, thus it's disabled until fixed

  #return _TestInstanceDiskFailure(instance, node, node2, True)

def TestInstanceSecondaryDiskFailure(instance, node, node2):

  """Testing disk failure on secondary node."""

  return _TestInstanceDiskFailure(instance, node, node2, False)