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#
# iscsi.py - iscsi class
#
# Copyright 2005, 2006 IBM, Inc.
#
# This software may be freely redistributed under the terms of the GNU
# general public license.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
import os
import string
import signal
import iutil
from flags import flags
import logging
import shutil
import time
log = logging.getLogger("anaconda")
from rhpl.translate import _, N_
# Note that stage2 copies all files under /sbin to /usr/sbin
ISCSID="/usr/sbin/iscsid"
ISCSIADM = "/usr/sbin/iscsiadm"
INITIATOR_FILE="/etc/iscsi/initiatorname.iscsi"
class iscsi:
def __init__(self):
self.targets = []
self.initiator = ""
self.iscsidStarted = False
def action(self, action, ipaddr = None):
#
# run action for all iSCSI targets.
#
# For each record (line of output) in:
# iscsiadm -m node
#
# Where each line in the output is of the form:
# [recnum] stuff
#
# Issue the "action" request to recnum.
#
argv = [ "-m", "node" ]
if ipaddr is not None:
argv.extend(["-p", ipaddr])
log.info("going to run iscsiadm: %s" %(argv,))
records = iutil.execWithCapture(ISCSIADM, argv)
for line in records.split("\n"):
if line and line.find("no records found!") == -1:
(portal, node) = line.split()
argv = [ "-m", "node", "-T", node, "-p", portal, action ]
log.info("going to run iscsiadm: %s" %(argv,))
rc = iutil.execWithRedirect(ISCSIADM, argv, searchPath = 1,
stdout = "/dev/tty5",
stderr = "/dev/tty5")
if rc != 0:
log.info("iscsiadm failed!")
continue
if action != "--login":
continue
# ... and now we have to make it start automatically
argv = [ "-m", "node", "-T", node, "-p", portal,
"-o", "update", "-n", "node.startup",
"-v", "automatic" ]
iutil.execWithRedirect(ISCSIADM, argv, searchPath = 1,
stdout = "/dev/tty5",
stderr = "/dev/tty5")
def shutdown(self):
if not self.iscsidStarted:
return
log.info("iSCSI shutdown")
self.action("--logout")
# XXX use iscsiadm shutdown when it's available.
argv = [ "--no-headers", "-C", "%s" % (ISCSID,) ]
psout = iutil.execWithCapture("/usr/bin/ps", argv)
for line in psout.split("\n"):
if line:
pid = string.atoi(string.split(line)[0])
log.info("Killing %s %d" % (ISCSID, pid))
os.kill(pid, signal.SIGKILL)
self.iscsidStarted = False;
def discoverTarget(self, ipaddr, port = "3260", intf = None):
if not self.iscsidStarted:
self.startup(intf)
if flags.test:
return
argv = [ "-m", "discovery", "-t", "st", "-p",
"%s:%s" % (ipaddr, port) ]
log.info("going to run with args: %s" %(argv,))
iutil.execWithRedirect(ISCSIADM, argv,
stdout = "/dev/tty5", stderr="/dev/tty5")
def loginTarget(self, ipaddr = None):
if flags.test:
return
self.action("--login", ipaddr)
def startup(self, intf = None):
if flags.test:
return
if not self.initiator:
log.info("no initiator set")
return
if self.iscsidStarted:
return
log.info("iSCSI initiator name %s", self.initiator)
if intf:
w = intf.waitWindow(_("Initializing iSCSI initiator"),
_("Initializing iSCSI initiator"))
log.debug("Setting up %s" % (INITIATOR_FILE, ))
if os.path.exists(INITIATOR_FILE):
os.unlink(INITIATOR_FILE)
if not os.path.isdir("/etc/iscsi"):
os.makedirs("/etc/iscsi", 0755)
fd = os.open(INITIATOR_FILE, os.O_RDWR | os.O_CREAT)
os.write(fd, "InitiatorName=%s\n" %(self.initiator))
os.close(fd)
log.info("ISCSID is %s", ISCSID)
iutil.execWithRedirect(ISCSID, [],
stdout="/dev/tty5", stderr="/dev/tty5")
self.iscsidStarted = True
time.sleep(2)
for t in self.targets:
idx = t.rfind(":")
if idx == -1:
ipaddr = t
port = "3260"
else:
ipaddr = t[:idx]
port = t[idx+1:]
self.discoverTarget(ipaddr, port, intf)
self.loginTarget(ipaddr)
if intf:
w.pop()
def writeKS(self):
# XXX Useful if we have auto-generated kickstart files.
return
def write(self, instPath):
if not self.initiator:
return
if not os.path.isdir(instPath + "/etc/iscsi"):
os.makedirs(instPath + "/etc/iscsi", 0755)
fd = os.open(instPath + INITIATOR_FILE, os.O_RDWR | os.O_CREAT)
os.write(fd, "InitiatorName=%s\n" %(self.initiator))
os.close(fd)
# copy "db" files. *sigh*
for d in ("/etc/iscsi/nodes", "/etc/iscsi/send_targets"):
if os.path.isdir(d):
shutil.copytree(d, instPath + d)
# vim:tw=78:ts=4:et:sw=4
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