83 lines
3.4 KiB
Python
83 lines
3.4 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 blivet.zfcp import zfcp
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from pyanaconda.core.regexes import DASD_DEVICE_NUMBER, ZFCP_WWPN_NUMBER, ZFCP_LUN_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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class ZFCPDiscoverTask(Task):
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"""A task for discovering a zFCP device"""
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def __init__(self, device_number, wwpn, lun):
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super().__init__()
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self._device_number = device_number
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self._wwpn = wwpn
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self._lun = lun
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@property
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def name(self):
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return "Discover a zFCP"
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def run(self):
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"""Run the discovery."""
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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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if self._wwpn and not ZFCP_WWPN_NUMBER.match(self._wwpn):
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raise StorageDiscoveryError("Incorrect format of the given WWPN number.")
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if self._lun and not ZFCP_LUN_NUMBER.match(self._lun):
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raise StorageDiscoveryError("Incorrect format of the given LUN number.")
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# Zfcp automatic LUN scan requires just the device number to be provided by the user.
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# If zfcp auto LUN scan is not available, the user has to specify the device number, WWPN
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# and LUN.
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if not ((self._device_number and not self._wwpn and not self._lun)
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or (self._device_number and self._wwpn and self._lun)):
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raise StorageDiscoveryError(
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"Only device number or device number with WWPN and LUN are allowed."
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)
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def _sanitize_input(self):
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"""Sanitize the input values."""
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try:
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self._device_number = blockdev.s390.sanitize_dev_input(self._device_number)
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if self._wwpn:
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self._wwpn = blockdev.s390.zfcp_sanitize_wwpn_input(self._wwpn)
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if self._lun:
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self._lun = blockdev.s390.zfcp_sanitize_lun_input(self._lun)
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except (blockdev.S390Error, ValueError) as err:
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raise StorageDiscoveryError(str(err)) from err
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def _discover_device(self):
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"""Discover the device."""
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try:
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zfcp.add_fcp(self._device_number, self._wwpn, self._lun)
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except ValueError as e:
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raise StorageDiscoveryError(str(e)) from e
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