this post was submitted on 14 Jun 2025
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Docker is renaming a mounted drive [Solved] (lemmy.world)
submitted 1 day ago* (last edited 10 hours ago) by gedaliyah@lemmy.world to c/selfhosted@lemmy.world
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So I recently moved most of my docker storage to a second hard drive, called "storage." After a system restart, docker is creating a folder called "storage," forcing the physical drive to be renamed "storage1." How do I prevent this from happening?

I am using Xubuntu.

Edit: As suggested, it was indeed my system spinning up Docker before mounting the internal disk. The solution (should work on most Unix-like systems) was to manually add a line to /etc/fstab as follows: First get the UUID for the problem drive

~$ sudo blkid -s UUID

The output will show your drives and the UUID of each. Then edit the following file:

~$ sudo mousepad /etc/fstab #{or use your choice of editor, i.e. nano}

Add the following line:

/dev/disk/by-uuid/{UUID number copied from blkid output} /destination/of/your/drive ext4 defaults 0 0

Of course replace {UUID number copied from blkid output} and /destination/of/your/drive and set defaults & parameters as needed. These worked for me.

Restart the system and the drive should be forced to mount before docker starts. This seems to be a known issue with certain docker setups.

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[–] SpatchyIsOnline@lemmy.world 12 points 1 day ago (1 children)

It sounds to me like one (or more) of your containers is referencing something on your storage drive, but Docker is loading before your drive gets mounted. When Docker sees that the folder its trying to access doesn't exist, it creates it, blocking your drive from taking that name.

To fix it, you would need to make sure your storage drive is mounted before Docker starts, how you do that is down to you and your particular setup though.

[–] friend_of_satan@lemmy.world 3 points 1 day ago

That's a good theory. This may be able to be investigated further with systemd-analyze plot > boot.svg