221 lines
7.8 KiB
Python
221 lines
7.8 KiB
Python
#
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# dasd.py - DASD class
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#
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# Copyright (C) 2009 Red Hat, Inc. All rights reserved.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# Red Hat Author(s): David Cantrell <dcantrell@redhat.com>
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#
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import iutil
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import sys
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import os
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from storage.devices import deviceNameToDiskByPath
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from constants import *
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from flags import flags
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import logging
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log = logging.getLogger("anaconda")
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import gettext
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_ = lambda x: gettext.ldgettext("anaconda", x)
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P_ = lambda x, y, z: gettext.ldngettext("anaconda", x, y, z)
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def getDasdPorts():
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""" Return comma delimited string of valid DASD ports. """
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ports = []
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f = open("/proc/dasd/devices", "r")
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lines = map(lambda x: x.strip(), f.readlines())
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f.close()
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for line in lines:
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if "unknown" in line:
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continue
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if "(FBA )" in line or "(ECKD)" in line:
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ports.append(line.split('(')[0])
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return ','.join(ports)
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class DASD:
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""" Controlling class for DASD interaction before the storage code in
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anaconda has initialized.
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The DASD class can determine if any DASD devices on the system are
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unformatted and can perform a dasdfmt on them.
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"""
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def __init__(self):
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self._dasdlist = []
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self._devices = [] # list of DASDDevice objects
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self._totalCylinders = 0
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self._completedCylinders = 0.0
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self._maxFormatJobs = 0
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self.started = False
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def startup(self, *args, **kwargs):
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""" Look for any unformatted DASDs in the system and offer the user
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the option for format them with dasdfmt or exit the installer.
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"""
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if self.started:
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return
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self.started = True
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if not iutil.isS390():
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return
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intf = kwargs.get("intf")
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zeroMbr = kwargs.get("zeroMbr")
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log.info("Checking for unformatted DASD devices:")
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for device in os.listdir("/sys/block"):
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if not device.startswith("dasd"):
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continue
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statusfile = "/sys/block/%s/device/status" % (device,)
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if not os.path.isfile(statusfile):
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continue
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f = open(statusfile, "r")
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status = f.read().strip()
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f.close()
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if status == "unformatted":
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log.info(" %s is an unformatted DASD" % (device,))
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self._dasdlist.append(device)
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if not len(self._dasdlist):
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log.info(" no unformatted DASD devices found")
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return
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askUser = True
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if zeroMbr:
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askUser = False
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elif not intf and not zeroMbr:
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log.info(" non-interactive kickstart install without zerombr "
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"command, unable to run dasdfmt, exiting installer")
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sys.exit(0)
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tmplist = map(lambda s: "/dev/" + s, self._dasdlist)
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self._dasdlist = map(lambda s: deviceNameToDiskByPath(s), tmplist)
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c = len(self._dasdlist)
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if intf and askUser:
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title = P_("Unformatted DASD Device Found",
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"Unformatted DASD Devices Found", c)
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msg = P_("Format uninitialized DASD device?\n\n"
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"There is %d uninitialized DASD device on this "
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"system. To continue installation, the device must "
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"be formatted. Formatting will remove any data on "
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"this device." % c,
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"Format uninitialized DASD devices?\n\n"
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"There are %d uninitialized DASD devices on this "
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"system. To continue installation, the devices must "
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"be formatted. Formatting will remove any data on "
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"these devices." % c,
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c)
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devs = ''
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for dasd in self._dasdlist:
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devs += "%s\n" % (dasd,)
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icon = "/usr/share/icons/gnome/32x32/status/dialog-error.png"
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buttons = [_("_Format"), _("_Exit installer")]
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rc = intf.detailedMessageWindow(title, msg, devs.strip(),
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type="custom",
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custom_icon=icon,
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custom_buttons=buttons)
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if rc == 1:
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log.info(" not running dasdfmt, exiting installer")
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sys.exit(0)
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argv = ["-y", "-P", "-d", "cdl", "-b", "4096"]
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if intf:
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title = P_("Formatting DASD Device", "Formatting DASD Devices", c)
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msg = P_("Preparing %d DASD device for use with Linux..." % c,
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"Preparing %d DASD devices for use with Linux..." % c, c)
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pw = intf.progressWindow(title, msg, 1.0)
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for dasd in self._dasdlist:
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log.info("Running dasdfmt on %s" % (dasd,))
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iutil.execWithCallback("/sbin/dasdfmt", argv + [dasd],
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stdout="/dev/tty5", stderr="/dev/tty5",
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callback=self._updateProgressWindow,
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callback_data=pw, echo=False)
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pw.pop()
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else:
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for dasd in self._dasdlist:
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log.info("Running dasdfmt on %s" % (dasd,))
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iutil.execWithRedirect("/sbin/dasdfmt", argv + [dasd],
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stdout="/dev/tty5", stderr="/dev/tty5")
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def addDASD(self, dasd):
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""" Adds a DASDDevice to the internal list of DASDs. """
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if dasd:
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self._devices.append(dasd)
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def write(self, instPath):
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""" Write /etc/dasd.conf to target system for all DASD devices
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configured during installation.
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"""
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if self._devices == []:
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return
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f = open(os.path.realpath(instPath + "/etc/dasd.conf"), "w")
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for dasd in self._devices:
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fields = [dasd.busid] + dasd.getOpts()
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f.write("%s\n" % (" ".join(fields),))
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f.close()
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def _updateProgressWindow(self, data, callback_data=None):
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""" Reads progress output from dasdfmt and collects the number of
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cylinders completed so the progress window can update.
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"""
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if not callback_data:
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return
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if data == '\n':
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# each newline we see in this output means one more cylinder done
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self._completedCylinders += 1.0
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callback_data.set(self._completedCylinders / self.totalCylinders)
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@property
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def totalCylinders(self):
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""" Total number of cylinders of all unformatted DASD devices. """
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if self._totalCylinders:
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return self._totalCylinders
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argv = ["-t", "-v", "-y", "-d", "cdl", "-b", "4096"]
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for dasd in self._dasdlist:
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buf = iutil.execWithCapture("/sbin/dasdfmt", argv + [dasd],
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stderr="/dev/tty5")
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for line in buf.splitlines():
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if line.startswith("Drive Geometry: "):
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# line will look like this:
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# Drive Geometry: 3339 Cylinders * 15 Heads = 50085 Tracks
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cyls = long(filter(lambda s: s, line.split(' '))[2])
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self._totalCylinders += cyls
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break
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return self._totalCylinders
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# vim:tw=78:ts=4:et:sw=4
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