Error Updating Volume Group Definitions Of Shared Vg
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resources used by HACMP areconfigured appropriately and that rules regarding resource ownership and resource takeover are in agreement across all nodes. You should verify and synchronize your cluster configuration aftermaking any change within http://justaix.blogspot.com/2011/01/hacmp-verification-and-synchronization.html a cluster. For example, any change to the hardware operating system, node configuration, https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Logical_Volume_Manager_Administration/VG_admin.html or cluster configuration. Whenever you configure, reconfigure, or update a cluster, run the cluster verification procedure to ensure that all nodes agree on the cluster topology, network configuration, and the ownership and takeover of HACMP resources. If the verification succeeds, the configuration can be synchronized.Synchronization takes effect immediately on an active cluster. A error updating dynamic reconfiguration event isrun and the changes are committed to the active cluster. Note :If you are using the SMIT Initialization and Standard Configuration path, synchronization automatically follows a successful verification. If you are using the Extended Configuration path, you have more options for types of verification. If you are using the Problem Determination Tools path, you can choose whether to synchronize or not. Typically, the log error updating volume is reported to /var/hacmp/clverify/clverify.log Running Cluster VerificationAfter making a change to the cluster, you can perform cluster verification in several ways. These methods include: Automatic verification:You can automatically verify your cluster: Each time you start cluster services on a node Each time a node rejoins the cluster- Every 24 hours. By default, automatic verification is enabled to run at midnight. Manual verification: Using the SMIT interface, you can either verify the complete configuration, or only the changes made since the last time the utility was run. Typically, you should run verification whenever you add or change anything in your cluster configuration. For detailed instructions, see Verifying the HACMP configuration using SMIT. Automatic Verification :You can Disable this Automatic verification during Cluster Startup under Extended Configuration >> Extended Cluster Service Settings >>>>>>>> BUT DONT DO IT IF NOT ADVICED. Understading Verification Process The phases of the verification and synchronization process are as follows: Verification Snapshot (optional) Synchronization. Phase one: VerificationDuring the verification process the default system configuration directory (DCD) is compared with the active configuration. On an inactive cluster node, the verification process compares the local DCD across all nodes. On an active
the Cache File4.3.7. Removing Physical Volumes from a Volume Group4.3.8. Activating and Deactivating Volume Groups4.3.9. Changing the Parameters of a Volume Group4.3.10. Removing Volume Groups4.3.11. Splitting a Volume Group4.3.12. Combining Volume Groups4.3.13. Backing Up Volume Group Metadata4.3.14. Renaming a Volume Group4.3.15. Moving a Volume Group to Another System4.3.16. Recreating a Volume Group DirectoryNext 4.3. Volume Group Administration This section describes the commands that perform the various aspects of volume group administration. 4.3.1. Creating Volume Groups To create a volume group from one or more physical volumes, use the vgcreate command. The vgcreate command creates a new volume group by name and adds at least one physical volume to it. The following command creates a volume group named vg1 that contains physical volumes /dev/sdd1 and /dev/sde1. # vgcreate vg1 /dev/sdd1 /dev/sde1 When physical volumes are used to create a volume group, its disk space is divided into 4MB extents, by default. This extent is the minimum amount by which the logical volume may be increased or decreased in size. Large numbers of extents will have no impact on I/O performance of the logical volume. You can specify the extent size with the -s option to the vgcreate command if the default extent size is not suitable. You can put limits on the number of physical or logical volumes the volume group can have by using the -p and -l arguments of the vgcreate command. By default, a volume group allocates physical extents according to common-sense rules such as not placing parallel stripes on the same physical volume. This is the normal allocation policy. You can use the --alloc argument of the vgcreate command to specify an allocation policy of contiguous, anywhere, or cling. In general, allocation policies other than normal are required only in special cases where you need to specify unusual or nonstandard extent allocation. For further information on how LVM allocates physical extents, refer to Section 4.3.2, “LVM Allocation”. LVM volume groups and underlying logical volumes are included in the device special file directory tree in the /dev directory with the following layout: /dev/v