159 lines
5.0 KiB
Python
159 lines
5.0 KiB
Python
#
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# fcoe.py - fcoe 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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import os
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import iutil
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import logging
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import time
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from flags import flags
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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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_fcoe_module_loaded = False
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def has_fcoe():
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global _fcoe_module_loaded
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if not _fcoe_module_loaded:
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iutil.execWithRedirect("modprobe", [ "fcoe" ],
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stdout = "/dev/tty5", stderr="/dev/tty5")
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_fcoe_module_loaded = True
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return os.access("/sys/module/fcoe", os.X_OK)
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class fcoe(object):
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""" FCoE utility class.
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This class will automatically discover and connect to EDD configured
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FCoE SAN's when the startup() method gets called. It can also be
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used to manually configure FCoE SAN's through the addSan() method.
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As this class needs to make sure certain things like starting fcoe
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daemons and connecting to firmware discovered SAN's only happens once
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and as it keeps a global list of all FCoE devices it is
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implemented as a Singleton.
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"""
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def __init__(self):
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self.started = False
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self.dcbdStarted = False
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self.fcoemonStarted = False
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self.nics = []
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# So that users can write fcoe() to get the singleton instance
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def __call__(self):
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return self
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def _stabilize(self, intf = None):
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if intf:
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w = intf.waitWindow(_("Connecting to FCoE SAN"),
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_("Connecting to FCoE SAN"))
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# I have no clue how long we need to wait, this ought to do the trick
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time.sleep(10)
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iutil.execWithRedirect("udevadm", [ "settle" ],
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stdout = "/dev/tty5", stderr="/dev/tty5")
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if intf:
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w.pop()
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def startup(self, intf = None):
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if self.started:
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return
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if not has_fcoe():
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return
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# Place holder for adding autodetection of FCoE setups based on
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# firmware tables (like iBFT for iSCSI)
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self.started = True
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def _startDcbd(self):
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if self.dcbdStarted:
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return
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iutil.execWithRedirect("dcbd", [ "-d" ],
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stdout = "/dev/tty5", stderr="/dev/tty5")
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self.dcbdStarted = True
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def _startFcoemon(self):
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if self.fcoemonStarted:
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return
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iutil.execWithRedirect("fcoemon", [ ],
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stdout = "/dev/tty5", stderr="/dev/tty5")
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self.fcoemonStarted = True
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def addSan(self, nic, dcb=False, intf=None):
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if not has_fcoe():
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raise IOError, _("FCoE not available")
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log.info("Activating FCoE SAN attached to %s, dcb: %s" % (nic, dcb))
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iutil.execWithRedirect("ip", [ "link", "set", nic, "up" ],
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stdout = "/dev/tty5", stderr="/dev/tty5")
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if dcb:
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self._startDcbd()
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iutil.execWithRedirect("dcbtool", [ "sc", nic, "dcb", "on" ],
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stdout = "/dev/tty5", stderr="/dev/tty5")
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iutil.execWithRedirect("dcbtool", [ "sc", nic, "app:fcoe",
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"e:1", "a:1", "w:1" ],
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stdout = "/dev/tty5", stderr="/dev/tty5")
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self._startFcoemon()
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else:
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f = open("/sys/module/fcoe/parameters/create", "w")
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f.write(nic)
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f.close()
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self._stabilize(intf)
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self.nics.append((nic, dcb))
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def writeKS(self, f):
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# fixme plenty (including add ks support for fcoe in general)
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return
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def write(self, instPath, anaconda):
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if not self.nics:
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return
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if not os.path.isdir(instPath + "/etc/fcoe"):
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os.makedirs(instPath + "/etc/fcoe", 0755)
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for nic, dcb in self.nics:
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fd = os.open(instPath + "/etc/fcoe/cfg-" + nic,
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os.O_RDWR | os.O_CREAT)
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os.write(fd, '# Created by anaconda\n')
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os.write(fd, '# Enable/Disable FCoE service at the Ethernet port\n')
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os.write(fd, 'FCOE_ENABLE="yes"\n')
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os.write(fd, '# Indicate if DCB service is required at the Ethernet port\n')
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if dcb:
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os.write(fd, 'DCB_REQUIRED="yes"\n')
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else:
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os.write(fd, 'DCB_REQUIRED="no"\n')
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os.close(fd)
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return
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# Create FCoE singleton
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fcoe = fcoe()
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# vim:tw=78:ts=4:et:sw=4
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