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na_backup - manages backups


backup status [ <ID> ]

backup terminate <ID>


The backup commands provide facilities to list and manipulate backups on a node.

A backup job runs on a node as a process that copies a file system or a subset of it to secondary media, usually tapes. Data can be restored from the secondary media in case the original copy is lost. There are several types of backup processes that run on the nodes:

runs natively on the node.

driven by a 3rd party client through NDMP protocol.

RESTARTABLE A failed dump that can be restarted.


backup status [ <ID> ]
displays all active instances of backup jobs on the node. For each backup, the backup status command lists the following information:

The unique ID that is assigned to the backup and persists across reboots until the backup completes successfully or is terminated. After that, the ID can be recycled for another backup.

The state can either be ACTIVE or RESTARTABLE. ACTIVE state indicates that the process is currently running; RESTARTABLE means the process is suspended and can be resumed.

Either dump or NDMP.

The current device. It is left blank for RESTARTABLE dumps since they are not running and thus do not have a current device.

Start Date The time and date that the backup first started.

The level of the backup.

Points to the tree that is being backed up.

An example of the backup status command output:

  ID  State        Type  Device   Start Date   Level  Path
  --  -----------  ----  ------  ------------  -----  ---------------
   0  ACTIVE       NDMP  urst0a  Nov 28 00:22    0    /vol/vol0/
   1  RESTARTABLE  dump          Nov 29 00:22    1    /vol/vol1/

If a specific ID is provided, the backup status command displays more detailed information for the corresponding backup.

backup terminate <ID>
A RESTARTABLE dump, though not actively running, retains a snapshot and other file system resources. To release the resources, user can explicitly terminate a RESTARTABLE dump. Once terminated, it cannot be restarted again.



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