Detailed device information in LAVA Scheduler

Static device information

  • Hostname - The unique name of this device in this LAVA instance, used to link all jobs, results and device information to a specific device configuration.

  • Device type See device type.

  • Device version - Optional field which can be edited by the lab administrators.

  • Device tags - Device specific labels to allow test jobs to request specific hardware capabilities. A device tag can only be used in a TestJob if supported by a device of the relevant device type.

  • Worker Hostname - The dispatcher which has a configuration file for a device matching the hostname. Note that this is the result of checking the network communication between the dispatcher and the server, not the serial connection between the dispatcher and the board.

Device ownership information

See also Device Capabilities Support

  • Device owner - The user or group of users who can administer this device. Note that superusers of the LAVA instance are always able to administer any devices on that instance. The device owner has limited administrative control, see Administrative controls. Devices can only be assigned to a device owner by the lab administrators.
  • Physical access - The user with physical access to the device.
  • Description - Free text description of this individual device. This field can be used by the device owner to give more information about the device. See Edit device description.

Device status


Describes the current device status which can be one of:

  • Offline - temporarily offline, possibly for short term maintenance or due to a health check failure.
  • Idle - available for job submissions, subject to device ownership restrictions
  • Running - the device is running a test job. A link to the job will appear below this section of the page.
  • Offlining - the device owner or administrator has taken the device offline. The currently running job will complete normally before the device goes offline.
  • Retired - the device may have been relocated to another server, or failed due to a hardware fault or some other physical problem with the device. Contact the device owner or the user with physical access for more information.
  • Reserved - the device is part of a MultiNode job but one or more other devices in the same job is not currently available. (Reserved is also used for single node jobs but the device quickly moves into Running.)
  • Unreachable - the network communication between this server and the dispatcher has been temporarily broken. The current state of the device or any currently running job may differ from that shown on the server.

Health Status

Status of the most recent health check run. If the health status is Unknown, a health check will be run as soon as the device is put online or has finished any current job but before starting any other submitted job.

Administrative controls

A device owner has permission to change the status of a particular device, including taking the device out of the general purpose pool of devices and making submissions available only to the device owner or group of users of which the device owner is a member. Device owners can also update the free text description of a device.


Devices which are a hidden device type cannot be returned to the pool until the type itself is visible to everyone.

Put into maintenance mode

A device in maintenance mode will be Offline, so any new job submissions will wait in the submission queue until the device is online (Idle) before starting. If the device was running a test job when the owner or administrator put the device into maintenance mode, the device will be in Offlining state until that job completes.

Put into looping mode

Devices already in maintenance mode can be put into looping mode where the device continually runs the health check defined for the device type. To cancel looping mode, either click the Cancel Looping button or Put into maintenance mode - when the last health check completes, the device will go into state Offline, the same as it was before looping mode was enabled.

Put online

Putting a device online involves running the health check defined for the device type, if any, before moving to state Idle and starting any jobs waiting in the submission queue. Device owners and administrators are able to put devices which are Offline back online. Only administrators can change the status of Retired devices.

Edit device description

Device owners and administrators can edit a free text description of this individual device. Suggested content includes more information about the specific device, the reasons for restricting submissions, information about the device owner and the purposes for which the device is used etc. Text can include links to external sites for more information.

It can be particularly useful to expand on the Device Capabilities Support by adding details which cannot be easily identified at runtime, e.g. big.LITTLE details or particular hardware features available on this specific device.

Restrict submissions

An owned device can be restricted so that new job submissions will only be accepted from the device owner. If the device owner is a group, any user in that group will be able to submit new jobs.

Any currently running jobs will complete normally, unless the device owner cancels the job.

Device owners are strongly recommended to edit the device description in such a way as to explain why the restriction is necessary and how long the restriction may last.

Return a device to the pool

Restricted devices can be returned to the common LAVA pool so that anyone can submit jobs to the device. The device will be able to accept jobs from any authorized user along with devices which have no device owner assigned.