def rescan(self, __hosts, __bus, __target, __lun):
""" Rescan SCSI
invokes a rescan via /sys/class/scsi_host/hostH/scan interface
IDEAS
INPUTS
* host - name of scsi host ( - for all )
* bus - number of scsi bus (- for all )
* target - number of target ( - for all )
* lun - number of lun ( - for all )
"""
__syspath = "/sys/class/scsi_host"
if not os.path.isdir(__syspath):
raise ComException(__syspath + " not found")
if __hosts == "-":
__hosts = self.getAllSCSIHosts()
if not (ComUtils.isInt(__bus) or __bus == "-"):
raise ComException(__bus + " is not valid to scan SCSI Bus")
if not (ComUtils.isInt(__target) or __target == "-"):
raise ComException(__bus + " is not valid to scan SCSI Target")
if not (ComUtils.isInt(__lun) or __lun == "-"):
raise ComException(__bus + " is not valid to scan SCSI Lun")
print "Hosts: ", __hosts
for __host in __hosts:
ComSystem.execLocal(
'echo "' + __bus + '" "' + __target + '" "' + __lun + '" > ' + __syspath + "/" + __host + "/scan"
)
def rescan(self, __hosts, __bus, __target, __lun):
""" Rescan SCSI
invokes a rescan via /sys/class/scsi_host/hostH/scan interface
IDEAS
INPUTS
* host - name of scsi host ( - for all )
* bus - number of scsi bus (- for all )
* target - number of target ( - for all )
* lun - number of lun ( - for all )
"""
__syspath = "/sys/class/scsi_host"
if not os.path.isdir( __syspath ):
raise ComException(__syspath + " not found")
if __hosts == "-":
__hosts=self.getAllSCSIHosts()
if not ( ComUtils.isInt(__bus) or __bus == "-"):
raise ComException( __bus + " is not valid to scan SCSI Bus");
if not ( ComUtils.isInt(__target) or __target == "-"):
raise ComException( __bus + " is not valid to scan SCSI Target")
if not (ComUtils.isInt(__lun) or __lun == "-"):
raise ComException( __bus + " is not valid to scan SCSI Lun")
print "Hosts: ", __hosts
for __host in __hosts:
ComSystem.execLocal( "echo \""+__bus+"\" \""+ __target+"\" \""+ __lun+ "\" > "+__syspath+"/"+__host+"/scan")
def scanBootloaderGrub(self):
#scans bootdisk for a possible grub installation
#returns (hd0,x) when succeeded
import tempfile
__tmp = tempfile.NamedTemporaryFile()
# This is not working with all devices (e.g. cciss, mpath)
# So I removed the part.
#__exp=re.compile("[0-9]*")
#__dev=__exp.sub("",self.getDeviceName())
__dev = self.getDeviceName()
__cmd = """/sbin/grub --batch 2>/dev/null <<EOF | egrep "(hd[0-9]+,[0-9]+)" 1>""" + __tmp.name + """
device (hd0) """ + __dev + """
find /grub/stage2
quit
EOF
"""
# TODO this will not work
if ComSystem.execLocal(__cmd, """(hd0,1)
"""):
raise ComException("cannot find grub on " + __dev)
__part = __tmp.readline()
self.log.debug("Found grub loader on " + __part)
return __part
def scanBootloaderGrub(self):
#scans bootdisk for a possible grub installation
#returns (hd0,x) when succeeded
import tempfile
__tmp=tempfile.NamedTemporaryFile()
# This is not working with all devices (e.g. cciss, mpath)
# So I removed the part.
#__exp=re.compile("[0-9]*")
#__dev=__exp.sub("",self.getDeviceName())
__dev=self.getDeviceName()
__cmd="""/sbin/grub --batch 2>/dev/null <<EOF | egrep "(hd[0-9]+,[0-9]+)" 1>"""+__tmp.name+"""
device (hd0) """+__dev+"""
find /grub/stage2
quit
EOF
"""
# TODO this will not work
if ComSystem.execLocal( __cmd, """(hd0,1)
""" ):
raise ComException("cannot find grub on "+__dev)
__part=__tmp.readline()
self.log.debug("Found grub loader on " + __part)
return __part
def rereadPartitionTable(self):
""" rereads the partition table of a disk """
__cmd = CMD_SFDISK + " -R " + self.getDeviceName() + " >/dev/null 2>&1"
if ComSystem.execLocal(__cmd):
self.commit()
return False
else:
self.commit()
return True
def rereadPartitionTable(self):
""" rereads the partition table of a disk """
__cmd = CMD_SFDISK + " -R " + self.getDeviceName() + " >/dev/null 2>&1"
if ComSystem.execLocal(__cmd):
self.commit()
return False
else:
self.commit()
return True
def check(*args, **kwds):
ret = False
try:
if not kwds and not args:
# SystemInformation.log.debug("Checking for cluster availability")
if (
os.path.exists(RedhatClusterSystemInformation.REDHAT_CLUSTER_CONF)
and ComSystem.execLocal("%s >/dev/null 2>&1" % (RedhatClusterSystemInformation.CLUSTAT_CMD)) == 0
):
# SystemInformation.log.debug("OK")
ret = True
# else:
# SystemInformation.log.debug("FAILED")
else:
if kwds.has_key("type") and kwds["type"] == "cluster":
ret = True
finally:
return ret
def installBootloaderGrub(self):
# To DO
# Add some checks if grub install was successfull.
__part=self.scanBootloaderGrub()
# This is not working with all devices (e.g. cciss, mpath)
# So I removed the part.
#__exp=re.compile("[0-9]*")
#__dev=__exp.sub("",self.getDeviceName())
__dev=self.getDeviceName()
__cmd="""grub --batch 2>/dev/null <<EOF | grep "succeeded" > /dev/null
device (hd0) """+__dev+"""
root """ +__part+ """
setup (hd0)
quit
EOF"""
if ComSystem.execLocal( __cmd ):
raise ComException("cannot install grub on "+__dev)
def installBootloaderGrub(self):
# To DO
# Add some checks if grub install was successfull.
__part = self.scanBootloaderGrub()
# This is not working with all devices (e.g. cciss, mpath)
# So I removed the part.
#__exp=re.compile("[0-9]*")
#__dev=__exp.sub("",self.getDeviceName())
__dev = self.getDeviceName()
__cmd = """grub --batch 2>/dev/null <<EOF | grep "succeeded" > /dev/null
device (hd0) """ + __dev + """
root """ + __part + """
setup (hd0)
quit
EOF
"""
if ComSystem.execLocal(__cmd):
raise ComException("cannot install grub on " + __dev)
def check(*args, **kwds):
ret = False
try:
if not kwds and not args:
# SystemInformation.log.debug("Checking for cluster availability")
if os.path.exists(
RedhatClusterSystemInformation.REDHAT_CLUSTER_CONF
) and ComSystem.execLocal(
"%s >/dev/null 2>&1" %
(RedhatClusterSystemInformation.CLUSTAT_CMD)) == 0:
# SystemInformation.log.debug("OK")
ret = True
# else:
# SystemInformation.log.debug("FAILED")
else:
if kwds.has_key("type") and kwds["type"] == "cluster":
ret = True
finally:
return ret
def deletePartitionTable(self):
""" deletes the partition table """
__cmd = CMD_DD + " if=/dev/zero of=" + self.getDeviceName() + " bs=512 count=2 >/dev/null 2>&1"
if ComSystem.execLocal(__cmd):
return False
return self.rereadPartitionTable()
def testExecLocalFalse(self):
ComSystem.setExecMode(None)
result = ComSystem.execLocal("/bin/false", "output of /bin/false, execLocal")
self.assertEquals(result, 256)
def tearDown(self):
from comoonics import ComSystem
ComSystem.execLocal("rm -rf %s" %self.__tmpdir)
def deletePartitionTable(self):
""" deletes the partition table """
__cmd = CMD_DD + " if=/dev/zero of=" + self.getDeviceName() + " bs=512 count=2 >/dev/null 2>&1"
if ComSystem.execLocal(__cmd):
return False
return self.rereadPartitionTable()
def testExecLocalFalse(self):
ComSystem.setExecMode(None)
result = ComSystem.execLocal("/bin/false",
"output of /bin/false, execLocal")
self.assertEquals(result, 256)
