{"action":"created","comment":{"url":"https://api.github.com/repos/ceph/ceph-docker/pulls/comments/38760426","id":38760426,"diff_hunk":"@@ -25,3 +25,12 @@ Commonly, you will want to bind-mount your host's `/etc/ceph` into the container\n For example:\n \n `docker run -d --net=host -v /etc/ceph:/etc/ceph -e MON_IP=192.168.0.20 -e CEPH_NETWORK=192.168.0.0/24 ceph/demo`\n+\n+\n+Tip\n+---\n+\n+If you get user_xattr error, try to remount your docker partition:\n+```\n+$ sudo mount -o remount,user_xattr,rw 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explicit docker directory is, by default, `/var/lib/docker`;  I would reference that, rather than all of `/var`, for this 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