71 lines
2.7 KiB
Python
71 lines
2.7 KiB
Python
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#
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# Discovery tasks
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#
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# Copyright (C) 2018 Red Hat, Inc.
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#
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# This copyrighted material is made available to anyone wishing to use,
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# modify, copy, or redistribute it subject to the terms and conditions of
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# the GNU General Public License v.2, or (at your option) any later version.
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY expressed or implied, including the implied warranties of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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# Public License for more details. You should have received a copy of the
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# GNU General Public License along with this program; if not, write to the
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# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA. Any Red Hat trademarks that are incorporated in the
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# source code or documentation are not subject to the GNU General Public
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# License and may only be used or replicated with the express permission of
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# Red Hat, Inc.
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#
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from blivet import blockdev
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from pyanaconda.core.regexes import DASD_DEVICE_NUMBER
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from pyanaconda.modules.common.task import Task
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from pyanaconda.modules.common.errors.configuration import StorageDiscoveryError
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from pyanaconda.core.util import execWithRedirect
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class DASDDiscoverTask(Task):
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"""A task for discovering a DASD by its number"""
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def __init__(self, device_number):
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super().__init__()
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self._device_number = device_number
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@property
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def name(self):
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return "Discover a DASD"
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def run(self):
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"""Run the task."""
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self._check_input()
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self._sanitize_input()
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self._discover_device()
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def _check_input(self):
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"""Check the input values."""
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if not DASD_DEVICE_NUMBER.match(self._device_number):
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raise StorageDiscoveryError("Incorrect format of the given device number.")
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def _sanitize_input(self):
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"""Sanitize the input values."""
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# pylint: disable=try-except-raise
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try:
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self._device_number = blockdev.s390.sanitize_dev_input(self._device_number)
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except blockdev.S390Error as e:
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raise StorageDiscoveryError(str(e)) from e
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def _discover_device(self):
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"""Discover the device."""
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# pylint: disable=try-except-raise
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try:
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rc = execWithRedirect("chzdev",
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["--enable", "dasd", self._device_number,
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"--active", "--persistent",
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"--yes", "--no-root-update", "--force"])
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except RuntimeError as e:
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raise StorageDiscoveryError(str(e)) from e
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if rc != 0:
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raise StorageDiscoveryError(
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"Could not set the device online. It might not exist.")
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