/usr/lib/python3/dist-packages/ironic_lib/disk_partitioner.py is in python3-ironic-lib 2.12.0-0ubuntu1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 | # Copyright 2014 Red Hat, Inc.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from oslo_config import cfg
from oslo_log import log as logging
from ironic_lib.common.i18n import _
from ironic_lib import exception
from ironic_lib import utils
opts = [
cfg.IntOpt('check_device_interval',
default=1,
help='After Ironic has completed creating the partition table, '
'it continues to check for activity on the attached iSCSI '
'device status at this interval prior to copying the image'
' to the node, in seconds'),
cfg.IntOpt('check_device_max_retries',
default=20,
help='The maximum number of times to check that the device is '
'not accessed by another process. If the device is still '
'busy after that, the disk partitioning will be treated as'
' having failed.')
]
CONF = cfg.CONF
opt_group = cfg.OptGroup(name='disk_partitioner',
title='Options for the disk partitioner')
CONF.register_group(opt_group)
CONF.register_opts(opts, opt_group)
LOG = logging.getLogger(__name__)
class DiskPartitioner(object):
def __init__(self, device, disk_label='msdos', alignment='optimal'):
"""A convenient wrapper around the parted tool.
:param device: The device path.
:param disk_label: The type of the partition table. Valid types are:
"bsd", "dvh", "gpt", "loop", "mac", "msdos",
"pc98", or "sun".
:param alignment: Set alignment for newly created partitions.
Valid types are: none, cylinder, minimal and
optimal.
"""
self._device = device
self._disk_label = disk_label
self._alignment = alignment
self._partitions = []
def _exec(self, *args):
# NOTE(lucasagomes): utils.execute() is already a wrapper on top
# of processutils.execute() which raises specific
# exceptions. It also logs any failure so we don't
# need to log it again here.
utils.execute('parted', '-a', self._alignment, '-s', self._device,
'--', 'unit', 'MiB', *args, check_exit_code=[0],
use_standard_locale=True, run_as_root=True)
def add_partition(self, size, part_type='primary', fs_type='',
boot_flag=None):
"""Add a partition.
:param size: The size of the partition in MiB.
:param part_type: The type of the partition. Valid values are:
primary, logical, or extended.
:param fs_type: The filesystem type. Valid types are: ext2, fat32,
fat16, HFS, linux-swap, NTFS, reiserfs, ufs.
If blank (''), it will create a Linux native
partition (83).
:param boot_flag: Boot flag that needs to be configured on the
partition. Ignored if None. It can take values
'bios_grub', 'boot'.
:returns: The partition number.
"""
self._partitions.append({'size': size,
'type': part_type,
'fs_type': fs_type,
'boot_flag': boot_flag})
return len(self._partitions)
def get_partitions(self):
"""Get the partitioning layout.
:returns: An iterator with the partition number and the
partition layout.
"""
return enumerate(self._partitions, 1)
def commit(self):
"""Write to the disk."""
LOG.debug("Committing partitions to disk.")
cmd_args = ['mklabel', self._disk_label]
# NOTE(lucasagomes): Lead in with 1MiB to allow room for the
# partition table itself.
start = 1
for num, part in self.get_partitions():
end = start + part['size']
cmd_args.extend(['mkpart', part['type'], part['fs_type'],
str(start), str(end)])
if part['boot_flag']:
cmd_args.extend(['set', str(num), part['boot_flag'], 'on'])
start = end
self._exec(*cmd_args)
try:
utils.wait_for_disk_to_become_available(self._device)
except exception.IronicException as e:
raise exception.InstanceDeployFailure(
_('Disk partitioning failed on device %(device)s. '
'Error: %(error)s')
% {'device': self._device, 'error': e})
def list_opts():
"""Entry point for oslo-config-generator."""
return [('disk_partitioner', opts)]
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