Additional space on docker partition?

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David Koppenhofer

• February 20, 2022 06:17

I'm running a Home Assistant docker image, along with Portainer. My docker partition is almost full. Is there a way to allocate more disk, or even use an SD card (though that may be rather slow) on my FWP?

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  Rich T.

  • February 20, 2022 14:23

  Have you looked at:

  https://help.firewalla.com/hc/en-us/articles/4415441687443-How-to-use-an-SD-card-as-external-storage-in-Firewalla-Purple#:~:text=After%20plugging%20the%20SD%20card%20into%20the%20slot,%22%2Fdev%2Fmmcblk1%22.%20For%20example%2C%20%24%20sudo%20fdisk%20-l%20%2Fdev%2Fmmcblk1

   

   

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  David Koppenhofer

  • February 20, 2022 18:32

  Thanks, Rich, I have seen that article. Do you think I could extend or move the docker mount point to the SD card? I'm guessing the FWP internal storage is faster than an SD card, but maybe that wouldn't matter for how I'm using docker.

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  Firewalla

  • February 20, 2022 23:40

  SD Cards are usually slower in "write", but decent if read. So it all depends on your application

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  David Koppenhofer

  • February 21, 2022 03:39

  Portainer probably doesn't do much writing, and I imagine Home Assistant would have a bit more - but likely only during configuration.

  I guess the only way to be sure is to try it. 😁

  On that note, how would I move docker to the SD card, or merge the current device and a card into a single mount point? My Linux filesystem knowledge is rusty, and 'mount' or /etc/fstab don't add much clarity for me.

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  Lynk

  • February 21, 2022 19:49

  I just installed a 512gb M.2 SSD in my FWG: 
  
  https://help.firewalla.com/hc/en-us/community/posts/360049384233-Adding-a-512GB-SATA-SSD-Drive-to-the-Firewalla-Gold
  
  I have not moved over my docker yet.

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  David Koppenhofer

  • February 21, 2022 20:31

  Lynk,

  Thank you for that writeup. I'll read through it a little more closely and experiment a little when I get some time.

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  David Koppenhofer

  • February 22, 2022 17:33

  I got the SD card partitioned and formatted with ext4. I also made a script in /home/pi/.firewalla/config/post_main.d/ to mount the drive.

  The official way to point Docker to a location other than /var/lib/docker is to specify the directory in a config file /etc/docker/daemon.json. Unfortunately, that file doesn't stick around through reboots.

  My next steps will probably be to update my mount script to stop docker, write that config file, then restart with the new docker data-root.

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  David Koppenhofer

  • February 24, 2022 22:20

  I am basically there. Just need to make sure nothing is still pointing to the internal directory, clean that up, and write up some instructions.

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  David Koppenhofer

  • February 25, 2022 06:08

  How do you format a post? I tried using markdown, but it didn't work.

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  David Koppenhofer

  • February 25, 2022 14:17

  Ok, so basically HTML instead of markdown.

  Here's the new post
  https://help.firewalla.com/hc/en-us/community/posts/4491452568851-Moving-docker-to-SD-card-on-Firewalla-Purple

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