Setup: Ubuntu 18.04 running Docker 17.06.2-ce.
I have a zfs array mounted that I can access fine on the host.
$ mount | grep zfs Main on /Main type zfs (rw,xattr,noacl) Main/Media on /Main/Media type zfs (rw,xattr,noacl) $ ls -la /Main total 48 drwxr-xr-x 8 root root 8 Oct 18 2015 . drwxr-xr-x 24 root root 4096 Jul 31 23:16 .. drwxrwxr-x 13 root libvirtd 16 Oct 28 2015 Media drwxr-xr-x 2 root root 2 Oct 2 2015 NFS drwxr-xr-x 3 root root 3 Dec 12 2014 Repos drwxrwxrwx 4 816 libvirtd 4 Oct 3 2015 VMs
When I try to bind mount it within a Docker container, however, I receive an error that it’s read-only (implying that it couldn’t find the directory on the host):
$ docker run -d -v "/Main/Media/Video:/mnt/video:ro" -p 32400:32400 pms 10bafd8e117bd706fce99a20de108f6abaf069609d56a30114ec5db842b1b353 docker: Error response from daemon: error while creating mount source path '/Main/Media/Video': mkdir /Main: read-only file system.
I saw people having similar issues with nfs but can’t find anything zfs specific – shouldn’t this be filesystem agnostic anyways since I’m doing a bind mount?
Any assistance would be appreciated!