How to take OS Backup of SLES 10 on DVD....???


 
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Operating Systems Linux How to take OS Backup of SLES 10 on DVD....???
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Old 03-20-2008
How to take OS Backup of SLES 10 on DVD....???

Dear All,

I have two intel xeon servers running with SLES 10 on a cluster environment (Veritas Cluster 4.1 - 2 Node Cluster - Active Passive). Both the systems are having hardware RAID 1 for OS disk. Both the systems are having DVD writer.

I would like to take the OS backup on DVD which can be bootable in case both the hard disk fails. Is there any backup software which I can use to take the entire OS backup (4GB) on DVD? Can someone help me out to do this on SLES 10???

Thanks & Regards,
jumadhiya.
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vxclustadm(1M)															    vxclustadm(1M)

NAME
vxclustadm - start, stop, and reconfigure a cluster SYNOPSIS
vxclustadm abortnode vxclustadm nidmap vxclustadm [-v] nodestate vxclustadm -m {hpsg|vcs} reinit vxclustadm -m hpsg -C cluster_name -t hpsg [-j join_timeout] startnode vxclustadm -m vcs -t gab startnode vxclustadm -m vcs -C cluster_name -t gab [-j join_timeout] startnode vxclustadm stopnode DESCRIPTION
The vxclustadm utility activates and deactivates cluster functionality on a node in a cluster. Caution: Use of the clustering functionality of VxVM without a cluster monitor is not supported. Cluster reconfiguration problems may occur if there is no cluster monitor or if GAB is used as the cluster monitor. Ensure that you completely understand the functionality of this command before using it. KEYWORDS
abortnode Stops clustering activity on a node and abandons all uncompleted I/O on shared volumes. This command is for emergency shutdown. Note: This operation is not allowed in the HP Serviceguard environment. nidmap Prints a table showing the mapping between node IDs in VxVM's cluster-support subsystem and node IDs in the cluster monitor. nodestate Displays the state of a node in the cluster and the reason for last abort of the node on the standard output. Valid states are: cluster aborting The node is being aborted from the cluster. cluster member The node is a member of the cluster. All shared volumes in the cluster are accessible. joining The node is in the process of joining a cluster. It has been initialized but is not yet completely in the cluster. The node goes into this state after vxclustadm is executed with the startnode keyword. out of cluster The node is not joined to the cluster. Refer to the Veritas Volume Manager Administrator's Guide for more information about reasons why a node may leave a cluster. For debugging purposes the -v option can be specified to display the node ID, master ID, neighbor ID, current state, and reason for a node leaving the cluster (if appropriate). reinit The reinit keyword allows nodes to be added to or removed from a cluster dynamically without stopping the cluster. The command causes vxclustadm to re-read the cluster configuration file, and implement any required changes to the membership of the cluster. The -m vcs option specifies the VCS cluster monitor, which implies the existence of the cluster configuration file, /etc/VRTSvcs/conf/config/main.cf. The -m hpsg option specifies the HP Serviceguard environment, which implies the existence of the cluster configuration file, /etc/llthosts. startnode The startnode keyword initiates cluster functionality on a node using the information supplied in the cluster configuration file. This is the first command that must be issued on a node to bring it into the cluster. The argument to the -m option specifies the cluster monitor, which implies the existence of a cluster configuration file: hpsg The cluster is running in the HP Serviceguard environment, and the cluster configuration file is /etc/llthosts. Caution: Use the HP Serviceguard administration commands to update the /etc/llthosts file. Do not edit this file by hand. The argument to the -C option specifies the name of the cluster. The -j option is used to specify the cluster reconfiguration timeout in seconds. See the FILES section for more infor- mation about this timeout. Note: The -C and -j are only applicable to the HP Serviceguard environment. vcs The cluster is running in the VCS environment. The cluster configuration file is /etc/VRTSvcs/conf/config/main.cf. Caution: Use VCS commands to edit the main.cf file. Do not edit this file by hand. startnode passes the information in the cluster configuration file to the VxVM kernel. In response to this command, the kernel and the VxVM configuration daemon, vxconfigd, perform the initialization. The argument to the -t option specifies the protocol to be used for messaging: gab Use GAB as the transport agent for messaging in addition to using GAB as a cluster monitor. If you try to use GAB as a transport agent with a cluster monitor other than GAB (or outside the VCS or HP Serviceguard environment), the kernel issues a warning message and changes the transport agent to UDP. When the cluster is running in the VCS or HP Serviceguard environment, the clustering functionality of VxVM should use GAB as the transport agent for messaging. stopnode Stops cluster functionality on a node, and waits for all outstanding I/O to complete and for all applications to close shared volumes or devices. EXIT CODES
vxclustadm returns the following exit values: 2 Invalid state. 101 Node is not in cluster. 102 Node is joining the cluster, or is involved in reconfiguration. 103 Node is a cluster member. 104 Node is aborting from cluster. FILES
For a cluster that is operating without a cluster monitor, or that is using GAB as the cluster monitor outside the VCS or HP Serviceguard environment, and which is using UDP as its transport agent for messaging, the cluster configuration file, /etc/vx/cvmtab, contains the fol- lowing fields: clustername cluster_name port vxconfigd port_number port vxkmsgd port_number node node_ID name name_on_local_net timeout timeout_value ... The recommended port numbers for the vxconfigd and vxkmsgd daemons are 4500 and 4501, but any available port numbers greater than 1024 are also acceptable. name_on_local_net is the node's IP address or resolvable host name on the cluster's private network. timeout_value is the timeout value in seconds. The clustering functionality of VxVM uses this value during cluster reconfiguration. The appropriate value to use depends on the number of nodes in the cluster and on the size of the shared disk group configuration. In most cases the value of 200 seconds is sufficient but this may need to be increased for larger configurations. Comment lines in the file start with a #. If GAB is being used as the transport agent for messaging, fields relating to port numbers and local network names are not required: clustername cluster_name node node_ID name timeout timeout_value ... For a cluster running in the VCS environment, VxVM obtains information about the cluster from the VCS cluster configuration file (/etc/VRTSvcs/conf/config/main.cf). Cluster-specific information may be appended to this file by running the vxcvmconfig command. For more information refer to the Veritas Cluster File System Installation and Configuration Guide. For a cluster running in the HP Serviceguard environment, VxVM obtains information about the cluster from the /etc/llthosts file. Cluster- specific information may be appended to this file by running the HP Serviceguard administrative command, cfscluster config. EXAMPLES
A cluster consisting of four nodes, named node0, node1, node2 and node3, operates without a cluster monitor, and has the following cvmtab file when UDP is used as the transport agent for messaging: # ClusterName clustername CVM1 # Daemon port numbers port vxconfigd 4500 port vxkmsgd 4501 # NodeID Nodename Localname node 0 node0 node0_p node 1 node1 node1_p node 2 node2 node2_p node 3 node3 node3_p # Timeout value timeout 200 If GAB is used as the transport agent for messaging, the cvmtab file only needs to contain the following information: # ClusterName clustername CVM1 # NodeID Nodename node 0 node0 node 1 node1 node 2 node2 node 3 node3 # Timeout value timeout 200 If node1 is the first node to join the cluster, it becomes the master node. The following command confirms that node1 is the master node: vxdctl -c mode To determine if reconfiguration of node3 is complete, examine the value returned from running the following command on node3: vxclustadm -v nodestate To confirm that node3 is a slave node, the following command is run on node3: vxdctl -c mode node1 remains as the master node for its lifetime in the cluster. To remove node1 from the cluster, the following command is run on node1: vxclustadm stopnode NOTES
vxclustadm does not ensure the consistency of cluster membership information. SEE ALSO
vxconfigd(1M), vxdctl(1M), vxintro(1M) Veritas Volume Manager Administrator's Guide Veritas Cluster File System Installation and Configuration Guide VxVM 5.0.31.1 24 Mar 2008 vxclustadm(1M)