[Bug] Clean processes after download finish

[magixus]

Issue

When we download videos, processes that hold video files are still running in the system.

At some point the file system will reach 100% disk usage and no longer be able to allow any IO ops.

Therefore, a cleaning mechanism is need to free space after downloads

Couple of suggestions:

• Add videos to download in /media/ex_nvr (not in /tmp)
• Better error handling when system is full
• Be able at least to restart EX_nvr from UI as a workaround

Workaround

In order to fix the above without hurting the system, a restart will kill all orphans processes.

sudo service ex_nvr restart