Hello, i'm receiving this error when trying to re-install a previous container.

"docker: Error response from daemon: Failed to create btrfs snapshot: invalid argument"

docker run
  -d
  --name='brave-frontier'
  --net='br0'
  --ip='10.10.11.89'
  --pids-limit 2048
  --privileged=true
  -e TZ="America/Los_Angeles"
  -e HOST_OS="Unraid"
  -e HOST_HOSTNAME="ISOT0"
  -e HOST_CONTAINERNAME="brave-frontier"
  -e 'TCP_PORT_5800'='5800'
  -e 'TCP_PORT_5900'='5900'
  -e 'DISPLAY_WIDTH'='1920'
  -e 'DISPLAY_HEIGHT'='1080'
  -e 'VNC_PASSWORD'=''
  -l net.unraid.docker.managed=dockerman
  -l net.unraid.docker.webui='http://[IP]:[PORT:5800]/'
  -l net.unraid.docker.icon='https://raw.githubusercontent.com/P3R-CO/unraid/master/Brave-P3R-256px.png'
  -v '/mnt/user/appdata/brave-frontier':'/config':'rw'
  -v '/mnt/user/appdata/brave-frontier/downloads':'/Downloads/':'rw'
  --shm-size=2g 'p3rco/brave:latest'


docker: Error response from daemon: Failed to create btrfs snapshot: invalid argument

Run 'docker run --help' for more information

The command failed.

The cache drive is formatted as encrypted btrfs, it's been that way for over a year. I am still using USB boot. I am using docker folders not docker img. Google searches recommend changing the format to xfs but it's odd it would have work fine and now I need to change the format?

No errors in the syslog and a btrfs scrub completed with no errors. Cache drive has 450 Gb of 500 Gb free, no smart errors and 85% life left.

Attached are diags. Thanks for the help!

isot0-diagnostics-20260705-2023.zip

Edited yesterday at 06:29 PM1 day by nerbonne

Docker troubleshooting | Unraid Docs

This page offers troubleshooting guidance specifically for Docker containers on Unraid, managed by the Unraid team. For advanced troubleshooting, in-depth technical details, or topics beyond the Unrai

To be fair, the linked guide does not cover docker directories and there is no delete button.

Edited 13 hours ago13 hr by nerbonne

It's the same with a folder; you can delete it if you stop the Docker service. Also recommend using a Docker image instead, since Docker folders can have strange issues.

26 minutes ago, JorgeB said:

It's the same with a folder; you can delete it if you stop the Docker service. Also recommend using a Docker image instead, since Docker folders can have strange issues.

Thanks. Can't remember why I was using folders over the image. I changed it to the image and pulled the containers down again. I appreciate it.