I tried to purge all lxc/lxd packages and install LXC 2.0.0~rc1-0ubuntu1 again, but this now not working at all any more on xenial's kernel -- the container never starts and I get a lot of apparmor violations.
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to lxc in Ubuntu. https://bugs.launchpad.net/bugs/1555997 Title: chmod fails with "Operation not permitted" on chowned files in ephemeral container Status in lxc package in Ubuntu: New Bug description: I'm investigating some failures in autopkgtest's testsuite, and stumbled over something really weird: In an ephemeral container it is apparently not possible any more to chmod files that started out being root owned and got chowned later: $ sudo lxc-start-ephemeral -o adt-wily (log in as ubuntu/ubuntu) ubuntu@adt-wily-hvzj1eoa:~$ echo hello | sudo tee /tmp/testfile [sudo] password for ubuntu: hello ubuntu@adt-wily-hvzj1eoa:~$ sudo chown ubuntu:ubuntu /tmp/testfile ubuntu@adt-wily-hvzj1eoa:~$ chmod +x /tmp/testfile chmod: changing permissions of ‘/tmp/testfile’: Operation not permitted However, if the file was *not* previously chowned, it works as expected: ubuntu@adt-wily-hvzj1eoa:~$ echo hello > /tmp/testfile2 ubuntu@adt-wily-hvzj1eoa:~$ chmod +x /tmp/testfile2 ubuntu@adt-wily-hvzj1eoa:~$ chmod -x /tmp/testfile2 (no errors and testfile2 becomes executable) There is no visible permission difference in the files at all, other than being group-writable (but changing the group w bit in either direction does not change the error at all): -rw-r--r-- 1 ubuntu ubuntu 6 Mar 11 10:26 /tmp/testfile -rw-rw-r-- 1 ubuntu ubuntu 6 Mar 11 10:26 /tmp/testfile2 ubuntu@adt-wily-hvzj1eoa:~$ stat /tmp/testfile* File: ‘/tmp/testfile’ Size: 6 Blocks: 8 IO Block: 4096 regular file Device: 15h/21d Inode: 28 Links: 1 Access: (0644/-rw-r--r--) Uid: ( 1000/ ubuntu) Gid: ( 1000/ ubuntu) Access: 2016-03-11 10:26:19.574364117 +0100 Modify: 2016-03-11 10:26:19.574364117 +0100 Change: 2016-03-11 10:26:21.930343210 +0100 Birth: - File: ‘/tmp/testfile2’ Size: 6 Blocks: 8 IO Block: 4096 regular file Device: 15h/21d Inode: 29 Links: 1 Access: (0664/-rw-rw-r--) Uid: ( 1000/ ubuntu) Gid: ( 1000/ ubuntu) Access: 2016-03-11 10:26:58.730145919 +0100 Modify: 2016-03-11 10:26:58.730145919 +0100 Change: 2016-03-11 10:27:44.530203985 +0100 Birth: - There are also no ACLs involved (I checked with getfacl). This does not happen with a normal lxc-start, so this might very well be a bug in Linux' overlayfs. However, it also does not happen with the more modern "sudo lxc-copy -n adt-wily --ephemeral --foreground" -- bug perhaps this isn't using overlayfs? ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: lxc 2.0.0~rc9-0ubuntu1 ProcVersionSignature: Ubuntu 4.4.0-11.26-generic 4.4.4 Uname: Linux 4.4.0-11-generic x86_64 ApportVersion: 2.20-0ubuntu3 Architecture: amd64 CurrentDesktop: i3 Date: Fri Mar 11 10:21:20 2016 EcryptfsInUse: Yes PackageArchitecture: all SourcePackage: lxc UpgradeStatus: No upgrade log present (probably fresh install) defaults.conf: lxc.network.type = veth lxc.network.link = lxcbr0 lxc.network.flags = up lxc.network.hwaddr = 00:16:3e:xx:xx:xx dnsmasq.conf: enable-tftp tftp-root=/tmp/tftp dhcp-boot=pxelinux.0 lxc.conf: lxc.lxcpath = /srv/lxc To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1555997/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
