LXD only mounts the ZFS datasets when the container is started, so you should: - Set security.privileged to true - Start the container (or alternatively manually "zfs mount" it) - Rsync - Stop or unmount the container - Unset security.privileged - Start it
On Thu, Apr 04, 2019 at 10:42:38AM -0400, Brandon Whaley wrote: > I'm in the middle of migrating some users from VZ to LXC/LXD with ZFS > backed guest fs. I'm using rsync with --numeric-ids to copy the files > with the correct uid/gid to the container's private area. It was > suggested to me that I could get the uid/gid remapping done by making > the destination container privileged and starting/stopping it before > the xfer, which does appear to work from the host side. Unfortunately > after setting the container back to unprivileged mode and starting it, > the new files are gone and the fs is back to its pre-rsync state. > Setting the container to privileged mode again shows that the files > are still there, just being hidden by some overlay. > > I'm wondering if there is a mechanism to mount a non-uid/gid remapped > guest fs that will not end up being overridden when the remapping is > done. > > root@atl-comp1:~# lxc config set instance-00000019 security.privileged false > root@atl-comp1:~# lxc start instance-00000019 > root@atl-comp1:~# ls -hal > /var/lib/lxd/storage-pools/default/containers/instance-00000019/rootfs/etc/redhat-release > ls: cannot access > '/var/lib/lxd/storage-pools/default/containers/instance-00000019/rootfs/etc/redhat-release': > No such file or directory > root@atl-comp1:~# lxc stop instance-00000019 > root@atl-comp1:~# lxc config set instance-00000019 security.privileged true > root@atl-comp1:~# lxc start instance-00000019 > root@atl-comp1:~# ls -hal > /var/lib/lxd/storage-pools/default/containers/instance-00000019/rootfs/etc/redhat-release > ls: cannot access > '/var/lib/lxd/storage-pools/default/containers/instance-00000019/rootfs/etc/redhat-release': > No such file or directory > root@atl-comp1:~# lxc stop instance-00000019 > root@atl-comp1:~# ls -hal > /var/lib/lxd/storage-pools/default/containers/instance-00000019/rootfs/etc/redhat-release > lrwxrwxrwx 1 root root 14 Apr 3 12:53 > /var/lib/lxd/storage-pools/default/containers/instance-00000019/rootfs/etc/redhat-release > -> centos-release > _______________________________________________ > lxc-users mailing list > lxc-users@lists.linuxcontainers.org > http://lists.linuxcontainers.org/listinfo/lxc-users -- Stéphane Graber Ubuntu developer http://www.ubuntu.com
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