3 Replies Latest reply: Apr 18, 2012 6:49 AM by user130038 RSS

    mount.ocfs2: Bad magic number in superblock while opening device /dev/sdf1

    user8665771
      Hi,

      I am trying to configure 11g on Rhel 6 (OEL6) in vwmare. While I am mounting the ocfs partition in rac2(node2), I show the below error.
      "mount.ocfs2: Bad magic number in superblock while opening device /dev/sdf1".
      But i can mount in rac1(node1).
      I will give some information here based on other some of other forums.
      NODE1(rac1)
      =========
      [root@rac1 ~]# mounted.ocfs2 -d
      Device FS Stack UUID Label
      /dev/sdf1 ocfs2 o2cb 2D1785E0BC2D4EE6911FEE26896AFAD1 crsfile
      [root@rac1 ~]# mounted.ocfs2 -f
      Device FS Nodes
      /dev/sdf1 ocfs2 rac1
      [root@rac1 ~]# /etc/rc.d/init.d/ocfs2 status
      Active OCFS2 mountpoints: /ocfs

      NODE2(rac2)
      =========
      [root@rac2 ~]# mounted.ocfs2 -d
      Device FS Stack UUID Label
      [root@rac2 ~]# mounted.ocfs2 -f
      Device FS Nodes
      [root@rac2 ~]# /etc/rc.d/init.d/ocfs2 status
      [root@rac2 ~]#

      NODE1(rac1)
      =========
      [root@rac1 ~]# cat /etc/ocfs2/cluster.conf
      node:
      ip_port = 7777
      ip_address = 192.168.2.131
      number = 0
      name = rac1
      cluster = ocfs2

      node:
      ip_port = 7777
      ip_address = 192.168.2.132
      number = 1
      name = rac2
      cluster = ocfs2

      cluster:
      node_count = 2
      name = ocfs2
      [root@rac1 ~]#


      NODE2(rac2)
      =========
      [root@rac2 ~]# cat /etc/ocfs2/cluster.conf
      node:
      ip_port = 7777
      ip_address = 192.168.2.131
      number = 0
      name = rac1
      cluster = ocfs2

      node:
      ip_port = 7777
      ip_address = 192.168.2.132
      number = 1
      name = rac2
      cluster = ocfs2

      cluster:
      node_count = 2
      name = ocfs2

      NODE1(rac1)
      =========
      [root@rac1 ~]# /etc/rc.d/init.d/iptables status
      iptables: Firewall is not running.
      [root@rac1 ~]#

      NODE2(rac2)
      =========
      [root@rac2 ~]# /etc/rc.d/init.d/iptables status
      iptables: Firewall is not running.
      ================NODE1(rac1)===============================
      .encoding = "windows-1252"
      config.version = "8"
      virtualHW.version = "7"
      maxvcpus = "4"
      scsi0.present = "TRUE"
      scsi0.virtualDev = "lsilogic"
      memsize = "1024"
      mem.hotadd = "TRUE"
      ############scsi0:0.present = "TRUE"
      ################scsi0:0.fileName = "RAC1.vmdk"
      ide1:0.present = "TRUE"
      ide1:0.fileName = "D:\oel6.0-x86_64.iso"
      ide1:0.deviceType = "cdrom-image"
      floppy0.startConnected = "FALSE"
      floppy0.fileName = ""
      floppy0.autodetect = "TRUE"
      ethernet0.present = "TRUE"
      ethernet0.virtualDev = "e1000"
      ethernet0.wakeOnPcktRcv = "FALSE"
      ethernet0.addressType = "generated"
      usb.present = "TRUE"
      ehci.present = "TRUE"
      sound.present = "TRUE"
      sound.fileName = "-1"
      sound.autodetect = "TRUE"
      pciBridge0.present = "TRUE"
      pciBridge4.present = "TRUE"
      pciBridge4.virtualDev = "pcieRootPort"
      pciBridge4.functions = "8"
      pciBridge5.present = "TRUE"
      pciBridge5.virtualDev = "pcieRootPort"
      pciBridge5.functions = "8"
      pciBridge6.present = "TRUE"
      pciBridge6.virtualDev = "pcieRootPort"
      pciBridge6.functions = "8"
      pciBridge7.present = "TRUE"
      pciBridge7.virtualDev = "pcieRootPort"
      pciBridge7.functions = "8"
      vmci0.present = "TRUE"
      roamingVM.exitBehavior = "go"
      displayName = "RAC1"
      guestOS = "rhel5-64"
      nvram = "RAC1.nvram"
      virtualHW.productCompatibility = "hosted"
      extendedConfigFile = "RAC1.vmxf"
      ethernet0.generatedAddress = "00:0c:29:3e:d6:99"
      uuid.location = "56 4d f1 85 0a 39 eb 0f-16 5b 09 0e 68 3e d6 99"
      uuid.bios = "56 4d f1 85 0a 39 eb 0f-16 5b 09 0e 68 3e d6 99"
      cleanShutdown = "FALSE"
      replay.supported = "FALSE"
      replay.filename = ""
      scsi0:0.redo = ""
      pciBridge0.pciSlotNumber = "17"
      pciBridge4.pciSlotNumber = "21"
      pciBridge5.pciSlotNumber = "22"
      pciBridge6.pciSlotNumber = "23"
      pciBridge7.pciSlotNumber = "24"
      scsi0.pciSlotNumber = "16"
      usb.pciSlotNumber = "32"
      ethernet0.pciSlotNumber = "33"
      sound.pciSlotNumber = "34"
      ehci.pciSlotNumber = "35"
      vmci0.pciSlotNumber = "36"
      vmotion.checkpointFBSize = "16777216"
      ethernet0.generatedAddressOffset = "0"
      vmci0.id = "1748948635"
      usb:1.present = "TRUE"
      tools.remindInstall = "FALSE"
      usb:1.deviceType = "hub"
      ide1:0.startConnected = "FALSE"
      tools.syncTime = "TRUE"
      ethernet1.present = "TRUE"
      ethernet1.connectionType = "bridged"
      ethernet1.virtualDev = "e1000"
      ethernet1.wakeOnPcktRcv = "FALSE"
      ethernet1.addressType = "generated"
      checkpoint.vmState = ""
      ethernet0.linkStatePropagation.enable = "TRUE"
      ethernet1.generatedAddress = "00:0c:29:3e:d6:a3"
      unity.wasCapable = "TRUE"
      debugStub.linuxOffsets = "0x0,0xffffffff,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0"
      ethernet1.pciSlotNumber = "37"
      ethernet2.virtualDev = "e1000"
      ethernet2.pciSlotNumber = "38"
      ethernet1.generatedAddressOffset = "10"
      ethernet0.vnet = "VMnet1"
      ethernet0.connectionType = "bridged"
      ethernet2.present = "TRUE"
      ethernet2.vnet = "VMnet8"
      ethernet2.connectionType = "nat"
      ethernet2.wakeOnPcktRcv = "FALSE"
      ethernet2.addressType = "generated"
      ethernet2.generatedAddress = "00:0c:29:3e:d6:ad"
      ethernet2.generatedAddressOffset = "20"
      ###############################################################################################################
      # ----------------------------------------------------------------
      # SHARED DISK SECTION - (BEGIN)
      # ----------------------------------------------------------------
      # - The goal in meeting the hardware requirements is to have a
      # shared storage for the two nodes. The way to achieve this in
      # VMware is the creation of a NEW SCSI BUS. It has to be of
      # type "virtual" and we must have the disk.locking = "false"
      # option.
      # - Just dataCacheMaxSize = "0" should be sufficient with the
      # diskLib.* parameters, although I include all parameters for
      # documentation purposes.
      # - maxUnsyncedWrites should matter for sparse disks only, and
      # I certainly do not recommend using sparse disks for
      # clustering.
      # - dataCacheMaxSize=0 should disable cache size completely, so
      # other three dataCache options should do nothing (no harm,
      # but nothing good either).
      # ----------------------------------------------------------------
      #

      diskLib.dataCacheMaxSize = "0"
      diskLib.dataCacheMaxReadAheadSize = "0"
      diskLib.dataCacheMinReadAheadSize = "0"
      diskLib.dataCachePageSize = "4096"
      diskLib.maxUnsyncedWrites = "0"

      disk.locking = "false"

      # ----------------------------------------------------------------
      # Create one HBA
      # ----------------------------------------------------------------



      # ----------------------------------------------------------------
      # Create virtual SCSI disks on single HBA
      # ----------------------------------------------------------------
      #
      # ----------------------------------------------------------------
      # SHARED DISK SECTION - (END)
      # ----------------------------------------------------------------
      #
      scsi0.sharedBus = "virtual"
      scsi1.pciSlotNumber = "-1"
      scsi0:0.present = "TRUE"
      scsi0:0.fileName = "RAC1.vmdk"
      scsi0:1.present = "TRUE"
      scsi0:1.fileName = "D:\shared_direc\Disk1.vmdk"
      scsi0:2.present = "TRUE"
      scsi0:2.fileName = "D:\shared_direc\Disk2.vmdk"
      scsi0:3.present = "TRUE"
      scsi0:3.fileName = "D:\shared_direc\Disk3.vmdk"
      scsi0:4.present = "TRUE"
      scsi0:4.fileName = "D:\shared_direc\Disk4.vmdk"
      scsi0:5.present = "TRUE"
      scsi0:5.fileName = "D:\shared_direc\Disk5.vmdk"
      scsi0:1.redo = ""
      scsi0:2.redo = ""
      scsi0:3.redo = ""
      scsi0:4.redo = ""
      scsi0:5.redo = ""
      scsi0:1.mode = "independent-persistent"
      scsi0:1.deviceType = "disk"
      scsi0:2.mode = "independent-persistent"
      scsi0:2.deviceType = "disk"
      scsi0:3.mode = "independent-persistent"
      scsi0:3.deviceType = "disk"
      scsi0:4.mode = "independent-persistent"
      scsi0:4.deviceType = "disk"
      scsi0:5.mode = "independent-persistent"
      scsi0:5.deviceType = "disk"
      scsi0:0.mode = "independent-persistent"
      ========================NODE2(rac2)=======================================
      .encoding = "windows-1252"
      config.version = "8"
      virtualHW.version = "7"
      maxvcpus = "4"
      scsi0.present = "TRUE"
      scsi0.virtualDev = "lsilogic"
      memsize = "1024"
      mem.hotadd = "TRUE"
      scsi0:0.present = "TRUE"
      scsi0:0.fileName = "RAC1-cl1.vmdk"
      ide1:0.present = "TRUE"
      ide1:0.fileName = "D:\oel6.0-x86_64.iso"
      ide1:0.deviceType = "cdrom-image"
      floppy0.startConnected = "FALSE"
      floppy0.fileName = ""
      floppy0.autodetect = "TRUE"
      ethernet0.present = "TRUE"
      ethernet0.virtualDev = "e1000"
      ethernet0.wakeOnPcktRcv = "FALSE"
      ethernet0.addressType = "generated"
      usb.present = "TRUE"
      ehci.present = "TRUE"
      sound.present = "TRUE"
      sound.fileName = "-1"
      sound.autodetect = "TRUE"
      pciBridge0.present = "TRUE"
      pciBridge4.present = "TRUE"
      pciBridge4.virtualDev = "pcieRootPort"
      pciBridge4.functions = "8"
      pciBridge5.present = "TRUE"
      pciBridge5.virtualDev = "pcieRootPort"
      pciBridge5.functions = "8"
      pciBridge6.present = "TRUE"
      pciBridge6.virtualDev = "pcieRootPort"
      pciBridge6.functions = "8"
      pciBridge7.present = "TRUE"
      pciBridge7.virtualDev = "pcieRootPort"
      pciBridge7.functions = "8"
      vmci0.present = "TRUE"
      roamingVM.exitBehavior = "go"
      displayName = "rac2"
      guestOS = "rhel5-64"
      nvram = "rac2.nvram"
      virtualHW.productCompatibility = "hosted"
      extendedConfigFile = "rac2.vmxf"
      ethernet0.generatedAddress = "00:0c:29:cd:a3:fc"
      uuid.location = "56 4d 4c fe 6c c4 fd 8a-32 88 ac 95 5a cd a3 fc"
      uuid.bios = "56 4d 4c fe 6c c4 fd 8a-32 88 ac 95 5a cd a3 fc"
      cleanShutdown = "FALSE"
      replay.supported = "FALSE"
      replay.filename = ""
      scsi0:0.redo = ""
      pciBridge0.pciSlotNumber = "17"
      pciBridge4.pciSlotNumber = "21"
      pciBridge5.pciSlotNumber = "22"
      pciBridge6.pciSlotNumber = "23"
      pciBridge7.pciSlotNumber = "24"
      scsi0.pciSlotNumber = "16"
      usb.pciSlotNumber = "32"
      ethernet0.pciSlotNumber = "33"
      sound.pciSlotNumber = "34"
      ehci.pciSlotNumber = "35"
      vmci0.pciSlotNumber = "36"
      vmotion.checkpointFBSize = "16777216"
      ethernet0.generatedAddressOffset = "0"
      vmci0.id = "1748948634"
      usb:1.present = "TRUE"
      tools.remindInstall = "FALSE"
      usb:1.deviceType = "hub"
      ide1:0.startConnected = "FALSE"
      tools.syncTime = "TRUE"
      ethernet1.present = "TRUE"
      ethernet1.connectionType = "bridged"
      ethernet1.virtualDev = "e1000"
      ethernet1.wakeOnPcktRcv = "FALSE"
      ethernet1.addressType = "generated"
      checkpoint.vmState = ""
      ethernet0.linkStatePropagation.enable = "FALSE"
      ethernet1.generatedAddress = "00:0c:29:cd:a3:06"
      unity.wasCapable = "TRUE"
      debugStub.linuxOffsets = "0x0,0xffffffff,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0"
      ethernet1.pciSlotNumber = "37"
      ethernet1.generatedAddressOffset = "10"
      ethernet0.vnet = "VMnet1"
      ethernet0.connectionType = "bridged"
      scsi0:1.present = "TRUE"
      scsi0:2.present = "TRUE"
      policy.vm.mvmtid = ""
      vc.uuid = ""
      inVMTeam = "FALSE"
      # ----------------------------------------------------------------
      # Create one HBA
      # ----------------------------------------------------------------
      scsi0:1.fileName = "D:\shared_direc\Disk1.vmdk"
      scsi0:1.mode = "independent-persistent"
      scsi0:2.fileName = "D:\shared_direc\Disk2.vmdk"
      scsi0:2.mode = "independent-persistent"
      scsi0:3.present = "TRUE"
      scsi0:3.fileName = "D:\shared_direc\Disk3.vmdk"
      scsi0:3.mode = "independent-persistent"
      scsi0:4.present = "TRUE"
      scsi0:4.fileName = "D:\shared_direc\Disk4.vmdk"
      scsi0:4.mode = "independent-persistent"
      scsi0:5.present = "TRUE"
      scsi0:5.fileName = "D:\shared_direc\Disk5.vmdk"
      scsi0:5.mode = "independent-persistent"
      scsi0:1.redo = ""
      scsi0:2.redo = ""
      scsi0:3.redo = ""
      scsi0:4.redo = ""
      scsi0:5.redo = ""
      diskLib.dataCacheMaxSize = "0"
      diskLib.dataCacheMaxReadAheadSize = "0"
      diskLib.dataCacheMinReadAheadSize = "0"
      diskLib.dataCachePageSize = "4096"
      diskLib.maxUnsyncedWrites = "0"
      disk.locking = "false"
      scsi0:1.deviceType = "disk"
      scsi0:2.deviceType = "disk"
      scsi0:3.deviceType = "disk"
      scsi0:4.deviceType = "disk"
      scsi0:5.deviceType = "disk"
      scsi0:0.mode = "independent-persistent"
      ethernet2.present = "FALSE"
      scsi0.sharedBus = "virtual"
      ==========================================================================

      NODE1(rac1)
      =========
      [root@rac1 ~]# /etc/init.d/o2cb status
      Driver for "configfs": Loaded
      Filesystem "configfs": Mounted
      Stack glue driver: Loaded
      Stack plugin "o2cb": Loaded
      Driver for "ocfs2_dlmfs": Loaded
      Filesystem "ocfs2_dlmfs": Mounted
      Checking O2CB cluster ocfs2: Online
      Heartbeat dead threshold = 31
      Network idle timeout: 30000
      Network keepalive delay: 2000
      Network reconnect delay: 2000
      Checking O2CB heartbeat: Active

      NODE2(rac2)
      =========
      [root@rac2 ~]# /etc/init.d/o2cb status
      Driver for "configfs": Loaded
      Filesystem "configfs": Mounted
      Stack glue driver: Loaded
      Stack plugin "o2cb": Loaded
      Driver for "ocfs2_dlmfs": Loaded
      Filesystem "ocfs2_dlmfs": Mounted
      Checking O2CB cluster ocfs2: Offline
      [root@rac2 ~]#

      I have tried the below otption also. But no improvement. Same error.
      1)unmont ocfs from both (I know it may not be mounted on both)
      2)[root@RAC1 ~]# umount /ocfs
      3)[root@RAC2 ~]# umount /ocfs
      4)reformat the ocfs2 partition, either using UI or this command: mkfs.ocfs2 -b 4K -C 32K -N 4 -L crsfile /dev/sdb1 [ from rac1 only ]
      5)mount it on both servers and see if it helps [mount -t ocfs2 -o datavolume,nointr /dev/sdb1 /ocfs]

      Please help me . If you want some more details. please ask.

      thanks in adavance.