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# |
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# dasd.py - DASD class |
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# |
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# Copyright (C) 2009, 2010 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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|
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import iutil |
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import sys |
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import os |
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from storage.errors import DasdFormatError |
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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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from baseudev import udev_trigger |
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|
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import logging |
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log = logging.getLogger("anaconda") |
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|
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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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|
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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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|
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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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|
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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.dasdfmt = "/sbin/dasdfmt" |
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self.commonArgv = ["-y", "-d", "cdl", "-b", "4096"] |
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self.started = False |
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|
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def __call__(self): |
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return self |
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|
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def startup(self, intf, exclusiveDisks, zeroMbr): |
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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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|
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self.started = True |
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out = "/dev/tty5" |
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err = "/dev/tty5" |
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|
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if not iutil.isS390(): |
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return |
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|
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# Trigger udev data about the dasd devices on the system |
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udev_trigger(action="change", name="dasd*") |
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|
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log.info("Checking for unformatted DASD devices:") |
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|
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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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|
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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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|
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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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|
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if status in ["unformatted"] and device not in exclusiveDisks: |
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bypath = deviceNameToDiskByPath(device) |
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if not bypath: |
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bypath = "/dev/" + device |
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|
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log.info(" %s (%s) status is %s, needs dasdfmt" % (device, |
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bypath, |
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status,)) |
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self._dasdlist.append((device, bypath)) |
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|
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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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|
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askUser = True |
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|
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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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c = len(self._dasdlist) |
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|
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if intf and askUser: |
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devs = '' |
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for dasd, bypath in self._dasdlist: |
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devs += "%s\n" % (bypath,) |
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|
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rc = intf.questionInitializeDASD(c, devs) |
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if rc == 1: |
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log.info(" not running dasdfmt, continuing installation") |
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return |
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|
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# gather total cylinder count |
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argv = ["-t", "-v"] + self.commonArgv |
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for dasd, bypath in self._dasdlist: |
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buf = iutil.execWithCapture(self.dasdfmt, argv + ["/dev/" + dasd], |
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stderr=err) |
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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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|
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# format DASDs |
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argv = ["-P"] + self.commonArgv |
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update = self._updateProgressWindow |
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|
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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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|
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if intf: |
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if self.totalCylinders: |
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pw = intf.progressWindow(title, msg, 1.0) |
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else: |
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pw = intf.progressWindow(title, msg, 100, pulse=True) |
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|
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for dasd, bypath in self._dasdlist: |
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log.info("Running dasdfmt on %s" % (bypath,)) |
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arglist = argv + ["/dev/" + dasd] |
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|
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try: |
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if intf and self.totalCylinders: |
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rc = iutil.execWithCallback(self.dasdfmt, arglist, |
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stdout=out, stderr=err, |
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callback=update, |
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callback_data=pw, |
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echo=False) |
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elif intf: |
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rc = iutil.execWithPulseProgress(self.dasdfmt, arglist, |
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stdout=out, stderr=err, |
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progress=pw) |
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else: |
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rc = iutil.execWithRedirect(self.dasdfmt, arglist, |
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stdout=out, stderr=err) |
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except Exception as e: |
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raise DasdFormatError(e, bypath) |
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|
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if rc: |
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raise DasdFormatError("dasdfmt failed: %s" % rc, bypath) |
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|
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if intf: |
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pw.pop() |
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|
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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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|
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def clear_device_list(self): |
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""" Clear the device list to force re-populate on next access. """ |
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self._devices = [] |
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|
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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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|
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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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|
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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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|
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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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# Create DASD singleton |
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DASD = DASD() |
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|
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# vim:tw=78:ts=4:et:sw=4 |
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