Storage

Give recordings a disk of their own, so they do not fill the system disk. Use a USB drive, or a disk image with a fixed size.

Use a USB driveCopy Anchor Link

1. Find the drive:

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   sudo fdisk -l

2. Mount it at /mnt/ext_disk with autofs (reference). Replace /dev/sda1 with your drive:

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   sudo apt install autofs
   echo '/- /etc/auto.usb --timeout=5' | sudo tee -a /etc/auto.master > /dev/null
   echo '/mnt/ext_disk -fstype=auto,nofail,nodev,nosuid,noatime,async,umask=000 :/dev/sda1' | sudo tee -a /etc/auto.usb > /dev/null
   sudo systemctl restart autofs

3. Record to it:

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   ./pi-webrtc ... --record-path=/mnt/ext_disk/video

Use a disk imageCopy Anchor Link

You do not need a USB drive. A disk image file limits recording to a fixed size.

1. Create a 16 GB image:

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   dd if=/dev/zero of=/home/pi/16gb.img bs=1M count=16384

2. Format it:

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   mkfs.ext4 /home/pi/16gb.img

3. Mount it:

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   mkdir -p /home/pi/limited_folder
   sudo mount -o loop /home/pi/16gb.img /home/pi/limited_folder

4. Make it writable:

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   sudo chmod 777 /home/pi/limited_folder

5. Record to it:

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   ./pi-webrtc ... --record-path=/home/pi/limited_folder/

6. To mount it at every boot, add this line to /etc/fstab:

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   /home/pi/16gb.img  /home/pi/limited_folder  ext4  loop,noatime  0  2