Get WWN Redhat 6

# systool -v -c fc_host | grep port_name

requires sysfsutils pkg


update:
# /lib/udev/scsi_id --page=0x83 --whitelisted --device=/dev/sdw

modprobe: FATAL: Error inserting bonding

modprobe: FATAL: Error inserting bonding  (/lib/modules/2.6.18-194.17.1.el5/kernel/drivers/net/bonding/bonding.ko):  Unknown symbol in module, or unknown parameter 
Resolution
Within the modprobe configuration file : /etc/modprobe.conf
Change the line:
install ipv6 /bin/false
to
options ipv6 disable=1
to load the bonding module with success.

One Whole VG for an LV

#!/pathtoshell
VG=$1
LV=$2
MOUNTPOINT=$3
MPATH=0
for i in `ls /sys/class/scsi_host/host*/scan`
  do echo "- - -" > $i; done
sleep 5
multipath -ll
echo -n "enter mpath:"
read MPATH
pvcreate /dev/mapper/${MPATH}
vgcreate -s 32 $VG /dev/mapper/${MPATH}
lvcreate -l 100%VG -n $LV $VG
mkfs.ext4 /dev/mapper/${VG}-${LV}
if [ ! -d $MOUNTPOINT ]
  then mkdir $MOUNTPOINT; fi
mount /dev/mapper/${VG}-${LV} $MOUNTPOINT
echo -e \
  "/dev/mapper/${VG}-${LV}" "\t" \
  "${MOUNTPOINT}" "\t" \
  "ext4" "\t" "defaults" "\t" "1 2" \
  >> /etc/fstab

CleanUp Multipath, Remove Failed Faulty Device

# for i in /sys/class/scsi_host/host*/scan
> do echo "- - -" > $i
> done
# DEV=`multipath -ll | grep failed | awk '{print $3}'`
# for i in $DEV
> do echo 1 > /sys/block/${i}/device/delete
done

Rebuild Yum Database

# rm -f /var/lib/rpm/__db*
# rpm --rebuilddb
# yum clean all
# yum update