Setting Heterogeneous Device Paths

You can use the --set option of hadbm create to set the --devicepath differently for each node or each device. There are three types of devices: the DataDevice, the NiLogDevice (node internal log device), and the RelalgDevice (relational algebra query device). The syntax for each name=value pair is as follows, where -devno is required only if the device is DataDevice:

Node-nodeno.device-devno.Path=path

For example:

--set Node-0.DataDevice-0.Path=/disk0,Node-1.DataDevice-0.Path=/disk1

Any device path that is not set for a particular node or device defaults to the --devicepath value. You cannot change device paths using the hadbm set or hadbm addnodes commands.


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