Avoid assigning new sessions if free disk space of agent is below a threshold

[inureyes]

Main idea

• Prevent creation of new sessions when insufficient storage is available by enabling the scheduler to check for minimum freespace.
• Display freespace status on agents when below a certain threshold.
• Include reasons for pending status in admin notifications, although they might be omitted if the scheduler excludes unprocessable items from the list.

Alternative ideas

No response

Anything else?

No response

[inureyes]

Implementation idea:

• Remove the schedulable flag when disk space falls below a predefined threshold.
• Provide a field to track the reason for the schedulable flag status, ensuring visibility through an admin UI.
• Implement logic to reinstate the schedulable status when conditions are met.