January 9, 201610 yr My Docker has suddenly stopped working and the menu "Docker" in the WebGUI is gone... Tried to create a new image under Settings -> Docker but still no menu. Any suggestions on what gone wrong?
January 9, 201610 yr Best guess without diagnostics is that the docker image is uber corrupted and won't mount (too small an image size originally? - LT's default image size of 10Gig tends to be too small for most users. 20-30Gig will cover the vast majority of usage cases). Delete the existing image, then recreate, then redownload your apps via add container, user templates (the my* templates). All your apps should then be back up and running the exact same way as before without having to recreate the appdata folders
January 9, 201610 yr Author Thats what i'm thinking but the docker.img file can't be deleted thrugh thw GUI and when i try to delete it from SSH it say's "cannot remove ‘/mnt/cache/Docker/docker.img’: Read-only file system " sjulf i deletet it with a btrfs command?
January 9, 201610 yr Is your cache drive btrfs? Sounds like the entire cache drive is probably read-only in which case you're going to have to stop the array, restart it in maintenance mode, then run the file system checks from the GUI -> from Main, click on cache and its in there somewhere
January 9, 201610 yr Author Did miss that the entire cache disk was read-only. Will try and repair it.
January 9, 201610 yr I hope you have an array of cache drives. I'd say that in 99.9% of the cases, a single drive too corrupt to mount isn't repairable via the web interface and you'll have to figure out how to use BTRFS command line tools to attempt to fix the corruption. FYI, people having corruption issues with a BTRFS cache disk is a common enough problem around here. Most switch to XFS and their problems go away.
January 9, 201610 yr Author Case closed. Reformatted the Cache drive. It was empty except docker.img Can you run docker from XFS?
January 9, 201610 yr Yes. No problems The docker.img file is always going to be BTRFS, so it doesn't matter what the filesystem of the cache drive is (I use XFS)
January 10, 201610 yr Yes you can. Try it with BTRFS again and see what happens. If it corrupts post back just to let us know you're another case of it happening.
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