How Can I Set Data Dump Parameters?


Data dump is required when MDC is expanded for the first time. The rate of date dump and the dumping progress displayed on the DeviceManager depend on the dump parameters and the number of users stored in the GADC. The following describes how to set data dump parameters.

1.Use PuTTY to log in to the active OMS of the GADC.
Use the opadmin account and Floating management IP address for login. After login, run su - root to switch to user root.

2.Run TMOUT=0 to prevent PuTTY from exiting in a timeout scenario.
3.Modify the data dump configuration file.
a.Run vi /opt/obs/obsconf/ to open the vi editor.
b.Input /data_dump_user_group_size to locate the data dump configuration field.
c.Press Insert to enter the edit mode.
d.Change the value of data_dump_user_group_size to a desired value.

/data_dump_user_group_size indicates the number of users dumped every minute. Suppose that data_dump_user_group_size = M and N user accounts have been stored in the GADC. When the system starts to dump data, N/M (rounded down) dump tasks will be initiated. The DeviceManager refreshes the dump progress periodically. The displayed progress is a ratio of finished dump tasks to total dump tasks.

The dump rate is in proportion to the value of /data_dump_user_group_size. This parameter is also related to the precision of dump progress refresh on the DeviceManager. The data dump duration cannot exceed 24 hours. When the number of users is less than 10,000, the dump duration cannot exceed one hour.

e.Press Esc to exit the editing mode and input :wq to save and exit the vi editor.
4.Run sh /opt/obs/service/dcm/bin/ restart to restart the DCM process for the configured parameters to take effect.

Other related questions:
Failure to Execute Alarm Dump, and Log Dump
Ensure that the execution time of each task is different from the others'.

Failed to Execute Alarm Dump or Log Dump
Ensure that the execution time of each task is different from the others'.

Migrating data
1. You can use the LUN copy, SmartMigration, and SmartTier features of OceanStor T and V3 series to implement data migration. 2. You can also use virtual intelligent storage (VIS) to implement data migration. It is a charged service. For details about the VIS service, go the HUAWEI Storage Information Self-Service Platform website. Note: Data migration documents are available to accounts who have the permissions equal to or higher than channel accounts.

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