Unable to start Docker


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I go to Settings>Docker, select Yes, set the image to 10gb, and point it to "/mnt/cache/docker.img". When I hit Apply I see "Starting Docker..." in the bottom left which disappears after a few seconds. Nothing else happens.

 

What am I missing?

 

Here's the log...

Mar 13 19:08:07 unSERVER php: /usr/local/emhttp/plugins/dynamix.docker.manager/event/started
Mar 13 19:08:07 unSERVER logger: Creating new image file for Docker: /mnt/cache/docker.img size: 10G
Mar 13 19:08:07 unSERVER logger: btrfs-progs v4.1.2
Mar 13 19:08:07 unSERVER logger: See http://btrfs.wiki.kernel.org for more information.
Mar 13 19:08:07 unSERVER logger: 
Mar 13 19:08:07 unSERVER logger: Label: (null)
Mar 13 19:08:07 unSERVER logger: UUID: 261d4061-e1e7-4edd-9aad-99f7d6426ec9
Mar 13 19:08:07 unSERVER logger: Node size: 16384
Mar 13 19:08:07 unSERVER logger: Sector size: 4096
Mar 13 19:08:07 unSERVER logger: Filesystem size: 10.00GiB
Mar 13 19:08:07 unSERVER logger: Block group profiles:
Mar 13 19:08:07 unSERVER logger: Data: single 8.00MiB
Mar 13 19:08:07 unSERVER logger: Metadata: DUP 1.01GiB
Mar 13 19:08:07 unSERVER logger: System: DUP 12.00MiB
Mar 13 19:08:07 unSERVER logger: SSD detected: no
Mar 13 19:08:07 unSERVER logger: Incompat features: extref, skinny-metadata
Mar 13 19:08:07 unSERVER logger: Number of devices: 1
Mar 13 19:08:07 unSERVER logger: Devices:
Mar 13 19:08:07 unSERVER logger: ID SIZE PATH
Mar 13 19:08:07 unSERVER logger: 1 10.00GiB /mnt/cache/docker.img
Mar 13 19:08:07 unSERVER logger: 
Mar 13 19:08:07 unSERVER kernel: BTRFS: device fsid 261d4061-e1e7-4edd-9aad-99f7d6426ec9 devid 1 transid 4 /dev/loop0
Mar 13 19:08:07 unSERVER kernel: BTRFS info (device loop0): disk space caching is enabled
Mar 13 19:08:07 unSERVER kernel: BTRFS: has skinny extents
Mar 13 19:08:07 unSERVER kernel: BTRFS: flagging fs with big metadata feature
Mar 13 19:08:07 unSERVER kernel: BTRFS: creating UUID tree
Mar 13 19:08:07 unSERVER logger: Resize '/var/lib/docker' of 'max'
Mar 13 19:08:07 unSERVER logger: starting docker ...
Mar 13 19:08:07 unSERVER kernel: BTRFS: new size for /dev/loop0 is 10737418240

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I'm not an expert with Dockers, but it appears to have issues with the networking and bridging.  The syslog terminates just as the dockers are starting to be setup, but the docker log indicates network and bridging issues.  Networking appears to be working fine though, including the VPN tunnel, so try turning on bridging in the network settings.

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I also just noticed that the log says the following

 

Mar 13 19:08:07 unSERVER logger: SSD detected: no

 

My cache is a 250gb SSD.

I think that refers to the btrfs system just built, docker.img.  The system vars show your Cache drive correctly as the Samsung SSD with "[rotational] => 0".  All of the other drives are "[rotational] => 1".

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