Mounted.ocfs2 -f shows "Unknown"

Hi,
I have installed Oracle VM on two seperate servers and configured external SAN storage repository in cluster.
I can create file on shared storage from first server and remove it from second server, means my cluster configuration is working correctly as expected.
But when I type mounted.ocfs2 -f command on both servers then it shows _"Unknown"_ for second server(i.e. test02), any idea what am I missing?
*[root@test01]# mounted.ocfs2 -f*
Device FS Nodes
/dev/sda3 ocfs2 Not mounted
/dev/sdb1 ocfs2 test01, Unknown
*[root@test02]# mounted.ocfs2 -f*
Device FS Nodes
/dev/sda3 ocfs2 Not mounted
/dev/sdb1 ocfs2 test01, Unknown
Thank you.

There is a problem with having node numbers in /etc/ocfs2/cluster.conf that are greater or equal to node_count. If that's the case, for example you have a node with number 2 and node_count = 2, then change the node number to 1 on both nodes, make a note of the currently mounted filesystems (devices and their mount points), unmount the ocfs2 filesystems, run service o2cb stop on both nodes, service o2cb start on both nodes, then mount the ocfs2 filesystems again, and it should be fixed.

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  • Mounted.ocfs2 -f shows current node only

    I am trying to configure two-node RAC (10g R2) on 32-bit Linux on VMWare (Vincent Chan's guide).
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    [root@rac1 init.d]# mounted.ocfs2 -f
    Device                FS     Nodes
    /dev/sdb1             ocfs2  rac1It shows "rac1" only. "rac2" is missing.
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    [root@rac2 init.d]# mounted.ocfs2 -f
    Device                FS     Nodes
    /dev/sdb1             ocfs2  rac2It shows "rac2" only. "rac1" is missing.
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    Device                FS     Nodes
    /dev/sdb1             ocfs2  rac1
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    Device                FS     UUID                                  Label
    /dev/sdb1             ocfs2  18f13142-7c34-43a1-92d3-668f666dbacb  oracle
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    Configured OCFS2 mountpoints:  /ocfs
    Active OCFS2 mountpoints:  /ocfs
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    Module "configfs": Loaded
    Filesystem "configfs": Mounted
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    Module "ocfs2_dlmfs": Loaded
    Filesystem "ocfs2_dlmfs": Mounted
    Checking O2CB cluster ocfs2: Online
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      Network idle timeout: 10000
      Network keepalive delay: 5000
      Network reconnect delay: 2000
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    /dev/sdb1             ocfs2  b65abba9-5988-4ee0-9e10-ad5533dff807  oracle
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    Checking O2CB heartbeat: ActiveAlso, if I create a file on "/ocfs" from rac1, it is not visible on rac2 and vice versa.
    Could someone please let me know what should I check further? Or what the problem maybe?
    TIA
    Edited by: user130038 on Jul 21, 2011 10:10 AM

    I don't have access to the virtual machines at the moment so I'll send you the "fdisk -l" output later but here is the excerpt from Vincent Chan's Guide that I am following to configure ocfs2 oartition - my apologies that it is not formatted/readable because I have copied it from the PDF and pasted it:
    6. Configure Oracle Cluster File System (OCFS2)
    OCFS2 is a general-purpose cluster file system developed by Oracle and integrated with the
    Enterprise Linux kernel. It enables all nodes to share files concurrently on the cluster file system and
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    ocfs2-tools-1.2.2-2
    ocfs2console-1.2.2-2
    ocfs2-2.6.9-42.0.0.0.1.ELsmp-1.2.3-2
    Create the OCFS2 configuration file. As the root user on rac1, execute
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    OCFS2 Console: Select Cluster, 1. Configure Nodes.
    2. “The cluster stack has been started”: Click on Close.
    3. Node Configuration: Click on Add.
    Add Node: Add the following nodes and then click on Apply.
    Name: rac1
    IP Address: 192.168.2.131
    IP Port: 7777
    Name: rac2
    IP Address: 192.168.2.132
    4.
    Install Oracle RAC 10g on Oracle Enterprise Linux Using VMware Server http://www.oracle.com/technology/pub/articles/chan-ubl-vmware.html?...
    20 of 42 11-1-2007 7:40
    IP Port: 7777
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    ip_address = 192.168.2.131
    number = 0
    name = rac1
    cluster = ocfs2
    node:
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    ip_address = 192.168.2.132
    number = 1
    name = rac2
    cluster = ocfs2
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    NM: Node Manager that keep track of all the nodes in the cluster.conf
    HB: Heartbeat service that issues up/down notifications when nodes join or leave the cluster
    TCP: Handles communication between the nodes
    DLM: Distributed lock manager that keeps track of all locks, its owners, and status
    CONFIGFS: User space driven configuration file system mounted at /config
    DLMFS: User space interface to the kernel space DLM
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    When prompted for a value for the heartbeat dead threshold, you have to specify a value higher than
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    A fence time of 120 seconds works well in our environment. The value of heartbeat dead threshold
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    Stopping O2CB cluster ocfs2: OK
    Unmounting ocfs2_dlmfs filesystem: OK
    Unloading module "ocfs2_dlmfs": OK
    Unmounting configfs filesystem: OK
    Unloading module "configfs": OK
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    Configuring the O2CB driver.
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    without typing an answer will keep that current value. Ctrl-C
    Install Oracle RAC 10g on Oracle Enterprise Linux Using VMware Server http://www.oracle.com/technology/pub/articles/chan-ubl-vmware.html?...
    21 of 42 11-1-2007 7:40
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    Writing O2CB configuration: OK
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    Loading module "ocfs2_nodemanager": OK
    Loading module "ocfs2_dlm": OK
    Loading module "ocfs2_dlmfs": OK
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    Number of node slots: 4
    Block size: Auto
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    scsi0:3.redo = ""
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