** Changed in: linux (Ubuntu)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1478578
Title:
"overlay" fs type not mountable in unprivileged containers
Status in linux package in Ubuntu:
Fix Committed
Bug description:
The "overlay" fstype is not mountable from within non-init user
namespaces in wily. This is a regression wrt vivid and is causing LXC
adt failures:
https://jenkins.qa.ubuntu.com/job/wily-adt-lxc/lastBuild/
To reproduce, assuming you have an unprivileged LXC container named
u1:
$ lxc-clone -s u1 u2
$ lxc-start -n u2 --logfile=lxc.out --logpriority=DEBUG
Starting u2 will fail, with the following in lxc.out:
lxc-start 1438006183.232 ERROR bdev - bdev.c:overlayfs_mount:2253
- Operation not permitted - overlayfs: error mounting
/home/ubuntu/.local/share/lxc/u1/rootfs onto /usr/lib/x86_64-linux-
gnu/lxc options
upperdir=/home/ubuntu/.local/share/lxc/u2/delta0,lowerdir=/home/ubuntu/.local/share/lxc/u1/rootfs,workdir=/home/ubuntu/.local/share/lxc/u2/olwork
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