st_volume_increase_redundancy
This job increases the redundancy of the given volume by the level specified with 'num_inc'.
The new redundancy segments will be created on the nodes specified with 'nodes'.
If no nodes have been given, the redundancy segments will be distributed throughout
the current nodes of the volume (if there is enough free space).
The number of nodes specified in the node list has to be a multiple of the number
of existing master nodes, which means that the nodes for a redundancy level have to be
either completely specified, or not at all.
If not enough nodes are given for all levels of redundancy, the remaining redundancy
levels are distributed throughout the nodes of the last specified level of redundancy.
Mandatory parameters
| Parameter name | Data type | Description |
|---|---|---|
| vid | integer | ID of an existing volume |
| delta | integer | Level of redundancy by which the current redundancy should be increased. |
Optional parameters
| Parameter name | Data type | Description |
|---|---|---|
| vname | string | Name of an existing volume |
| nodes | list | Node IDs to be used for the new redundancy |
Substitute parameters
The following table describes what parameters can be substituted for another parameter.
| Parameter name | Substitute parameter |
|---|---|
| vid | vname |
| vname | vid |
Allowed users
The following users are allowed to run this job:
- root
Allowed groups
The following groups are allowed to run this job:
- root
- exastoradm
- exaadm
Examples
The following examples show how to run this job in a Python program using XML-RPC or on the command line using confd_client.
Python using XML-RPC