[Bug 1518440] Re: tgt fails to install in LXD

[Sebastien Bacher]

@Ryan, thanks for the patch. Is there any reason the change should be Ubuntu specific? If not having a Debian/upstream bug reference would be nice.
Other minor nitput otherwise, you used spaces instead of tab for identation (it's visible when looking at the diff e.g in firefox, the lines are not aligned), maybe you could fix that?

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https://bugs.launchpad.net/bugs/1518440

Title:
  tgt fails to install in LXD

Status in MAAS:
  Triaged
Status in tgt:
  New
Status in tgt package in Ubuntu:
  Triaged

Bug description:
  When trying to install tgt in an LXD container the post install script fails. I've tried setting the container profile as uncontained as per https://help.ubuntu.com/lts/serverguide/lxc.html#lxc-apparmor to no avail. This is preventing MAAS from being able to be run in an LXD container.
  /system.slice/tgt.service)

  
  root at maas-dev:~# apt-get install -f
  Reading package lists... Done
  Building dependency tree       
  Reading state information... Done
  0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
  1 not fully installed or removed.
  After this operation, 0 B of additional disk space will be used.
  Setting up tgt (1:1.0.57-1ubuntu2) ...
  Job for tgt.service failed because the control process exited with error code. See "systemctl status tgt.service" and "journalctl -xe" for details.
  invoke-rc.d: initscript tgt, action "start" failed.
  dpkg: error processing package tgt (--configure):
   subprocess installed post-installation script returned error exit status 1
  E: Sub-process /usr/bin/dpkg returned an error code (1)

  
  # systemctl status tgt.service
  ● tgt.service - (i)SCSI target daemon
     Loaded: loaded (/lib/systemd/system/tgt.service; enabled; vendor preset: enabled)
     Active: failed (Result: start-limit) since Fri 2015-11-20 19:51:45 UTC; 2min 25s ago
       Docs: man:tgtd(8)
    Process: 31872 ExecStop=/usr/sbin/tgtadm --op update --mode sys --name State -v offline (code=exited, status=107)
    Process: 31857 ExecStart=/usr/sbin/tgtd -f (code=exited, status=1/FAILURE)
   Main PID: 31857 (code=exited, status=1/FAILURE)

  Nov 20 19:51:45 maas-dev systemd[1]: Failed to start (i)SCSI target daemon.
  Nov 20 19:51:45 maas-dev systemd[1]: tgt.service: Unit entered failed state.
  Nov 20 19:51:45 maas-dev systemd[1]: tgt.service: Failed with result 'exit-code'.
  Nov 20 19:51:45 maas-dev systemd[1]: tgt.service: Service hold-off time over, scheduling restart.
  Nov 20 19:51:45 maas-dev systemd[1]: Stopped (i)SCSI target daemon.
  Nov 20 19:51:45 maas-dev systemd[1]: tgt.service: Start request repeated too quickly.
  Nov 20 19:51:45 maas-dev systemd[1]: Failed to start (i)SCSI target daemon.
  Nov 20 19:51:45 maas-dev systemd[1]: tgt.service: Unit entered failed state.
  Nov 20 19:51:45 maas-dev systemd[1]: tgt.service: Failed with result 'start-limit'.

  
  # journalctl -xe
  -- 
  -- Unit tgt.service has failed.
  -- 
  -- The result is failed.
  Nov 20 19:54:32 maas-dev systemd[1]: tgt.service: Unit entered failed state.
  Nov 20 19:54:32 maas-dev systemd[1]: tgt.service: Failed with result 'exit-code'.
  Nov 20 19:54:32 maas-dev systemd[1]: tgt.service: Service hold-off time over, scheduling restart.
  Nov 20 19:54:32 maas-dev systemd[1]: Stopped (i)SCSI target daemon.
  -- Subject: Unit tgt.service has finished shutting down
  -- Defined-By: systemd
  -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
  -- 
  -- Unit tgt.service has finished shutting down.
  Nov 20 19:54:33 maas-dev systemd[1]: Starting (i)SCSI target daemon...
  -- Subject: Unit tgt.service has begun start-up
  -- Defined-By: systemd
  -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
  -- 
  -- Unit tgt.service has begun starting up.
  Nov 20 19:54:33 maas-dev systemd[1]: dev-.lxd\x2dmounts.mount: Failed to create cgroup /lxc/maas-dev-11/system.slice/dev-.lxd\x2dmounts.mount: No such file or directory
  Nov 20 19:54:33 maas-dev systemd[1]: Failed to realize cgroups for queued unit dev-.lxd\x2dmounts.mount, ignoring: No such file or directory
  Nov 20 19:54:33 maas-dev systemd[1]: proc-sysrq\x2dtrigger.mount: Failed to create cgroup /lxc/maas-dev-11/system.slice/proc-sysrq\x2dtrigger.mount: No such file or directory
  Nov 20 19:54:33 maas-dev systemd[1]: Failed to realize cgroups for queued unit proc-sysrq\x2dtrigger.mount, ignoring: No such file or directory
  Nov 20 19:54:33 maas-dev tgtd[779]: tgtd: iser_ib_init(3436) Failed to initialize RDMA; load kernel modules?
  Nov 20 19:54:33 maas-dev tgtd[779]: can't adjust oom-killer's pardon /proc/self/oom_score_adj, Permission denied
  Nov 20 19:54:33 maas-dev systemd[1]: tgt.service: Main process exited, code=exited, status=1/FAILURE
  Nov 20 19:54:33 maas-dev systemd[1]: dev-.lxd\x2dmounts.mount: Failed to create cgroup /lxc/maas-dev-11/system.slice/dev-.lxd\x2dmounts.mount: No such file or directory
  Nov 20 19:54:33 maas-dev systemd[1]: Failed to realize cgroups for queued unit dev-.lxd\x2dmounts.mount, ignoring: No such file or directory
  Nov 20 19:54:33 maas-dev systemd[1]: proc-sysrq\x2dtrigger.mount: Failed to create cgroup /lxc/maas-dev-11/system.slice/proc-sysrq\x2dtrigger.mount: No such file or directory
  Nov 20 19:54:33 maas-dev systemd[1]: Failed to realize cgroups for queued unit proc-sysrq\x2dtrigger.mount, ignoring: No such file or directory
  Nov 20 19:54:33 maas-dev tgtadm[794]: tgtadm: failed to send request hdr to tgt daemon, Transport endpoint is not connected
  Nov 20 19:54:33 maas-dev systemd[1]: tgt.service: Control process exited, code=exited status=107
  Nov 20 19:54:33 maas-dev systemd[1]: Failed to start (i)SCSI target daemon.
  -- Subject: Unit tgt.service has failed
  -- Defined-By: systemd
  -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
  -- 
  -- Unit tgt.service has failed.
  -- 
  -- The result is failed.
  Nov 20 19:54:33 maas-dev systemd[1]: tgt.service: Unit entered failed state.
  Nov 20 19:54:33 maas-dev systemd[1]: tgt.service: Failed with result 'exit-code'.
  Nov 20 19:54:33 maas-dev systemd[1]: tgt.service: Service hold-off time over, scheduling restart.
  Nov 20 19:54:33 maas-dev systemd[1]: Stopped (i)SCSI target daemon.
  -- Subject: Unit tgt.service has finished shutting down
  -- Defined-By: systemd
  -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
  -- 
  -- Unit tgt.service has finished shutting down.
  Nov 20 19:54:33 maas-dev systemd[1]: tgt.service: Start request repeated too quickly.
  Nov 20 19:54:33 maas-dev systemd[1]: Failed to start (i)SCSI target daemon.
  -- Subject: Unit tgt.service has failed
  -- Defined-By: systemd
  -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
  -- 
  -- Unit tgt.service has failed.
  -- 
  -- The result is failed.
  Nov 20 19:54:33 maas-dev systemd[1]: tgt.service: Unit entered failed state.
  Nov 20 19:54:33 maas-dev systemd[1]: tgt.service: Failed with result 'start-limit'.

  
  # journalctl -f # on host while apt-get install tgt is running in container
  Nov 20 11:56:18 ltrager-laptop lxcfs[1019]: rmdir: verifying access to name=systemd:lxc/maas-dev-11/system.slice/tgt.service (req path /cgroup/name=systemd/lxc/maas-dev-11/system.slice/tgt.service/control)
  Nov 20 11:56:18 ltrager-laptop lxcfs[1019]: rmdir: verifying access to name=systemd:lxc/maas-dev-11/system.slice (req path /cgroup/name=systemd/lxc/maas-dev-11/system.slice/tgt.service)
  Nov 20 11:56:18 ltrager-laptop cgmanager[1018]: cgmanager: Invalid path /run/cgmanager/fs/devices///lxc/maas-dev-11/system.slice/tgt.service (No such file or directory)
  Nov 20 11:56:18 ltrager-laptop cgmanager[1018]: cgmanager:list_keys_main: Could not determine the requested cgroup (devices:lxc/maas-dev-11/system.slice/tgt.service)
  Nov 20 11:56:18 ltrager-laptop lxcfs[1019]: ** (process:1019): WARNING **: cgmanager method call org.linuxcontainers.cgmanager0_0.ListKeys failed: GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: invalid request.  Use G_DBUS_DEBUG=message for more info.
  Nov 20 11:56:18 ltrager-laptop lxcfs[1019]: rmdir: verifying access to devices:lxc/maas-dev-11/system.slice (req path /cgroup/devices/lxc/maas-dev-11/system.slice/tgt.service)
  Nov 20 11:56:19 ltrager-laptop lxcfs[1019]: rmdir: verifying access to name=systemd:lxc/maas-dev-11/system.slice/tgt.service (req path /cgroup/name=systemd/lxc/maas-dev-11/system.slice/tgt.service/control)
  Nov 20 11:56:19 ltrager-laptop lxcfs[1019]: rmdir: verifying access to name=systemd:lxc/maas-dev-11/system.slice (req path /cgroup/name=systemd/lxc/maas-dev-11/system.slice/tgt.service)
  Nov 20 11:56:19 ltrager-laptop cgmanager[1018]: cgmanager: Invalid path /run/cgmanager/fs/devices///lxc/maas-dev-11/system.slice/tgt.service (No such file or directory)
  Nov 20 11:56:19 ltrager-laptop cgmanager[1018]: cgmanager:list_keys_main: Could not determine the requested cgroup (devices:lxc/maas-dev-11/system.slice/tgt.service)
  Nov 20 11:56:19 ltrager-laptop lxcfs[1019]: ** (process:1019): WARNING **: cgmanager method call org.linuxcontainers.cgmanager0_0.ListKeys failed: GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: invalid request.  Use G_DBUS_DEBUG=message for more info.
  Nov 20 11:56:19 ltrager-laptop lxcfs[1019]: rmdir: verifying access to devices:lxc/maas-dev-11/system.slice (req path /cgroup/devices/lxc/maas-dev-11/system.slice/tgt.service)
  Nov 20 11:56:19 ltrager-laptop lxcfs[1019]: rmdir: verifying access to name=systemd:lxc/maas-dev-11/system.slice/tgt.service (req path /cgroup/name=systemd/lxc/maas-dev-11/system.slice/tgt.service/control)
  Nov 20 11:56:19 ltrager-laptop lxcfs[1019]: rmdir: verifying access to name=systemd:lxc/maas-dev-11/system.slice (req path /cgroup/name=systemd/lxc/maas-dev-11/system.slice/tgt.service)
  Nov 20 11:56:19 ltrager-laptop cgmanager[1018]: cgmanager: Invalid path /run/cgmanager/fs/devices///lxc/maas-dev-11/system.slice/tgt.service (No such file or directory)
  Nov 20 11:56:19 ltrager-laptop cgmanager[1018]: cgmanager:list_keys_main: Could not determine the requested cgroup (devices:lxc/maas-dev-11/system.slice/tgt.service)
  Nov 20 11:56:19 ltrager-laptop lxcfs[1019]: ** (process:1019): WARNING **: cgmanager method call org.linuxcontainers.cgmanager0_0.ListKeys failed: GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: invalid request.  Use G_DBUS_DEBUG=message for more info.
  Nov 20 11:56:19 ltrager-laptop lxcfs[1019]: rmdir: verifying access to devices:lxc/maas-dev-11/system.slice (req path /cgroup/devices/lxc/maas-dev-11/system.slice/tgt.service)
  Nov 20 11:56:20 ltrager-laptop lxcfs[1019]: rmdir: verifying access to name=systemd:lxc/maas-dev-11/system.slice/tgt.service (req path /cgroup/name=systemd/lxc/maas-dev-11/system.slice/tgt.service/control)
  Nov 20 11:56:20 ltrager-laptop lxcfs[1019]: rmdir: verifying access to name=systemd:lxc/maas-dev-11/system.slice (req path /cgroup/name=systemd/lxc/maas-dev-11/system.slice/tgt.service)
  Nov 20 11:56:20 ltrager-laptop cgmanager[1018]: cgmanager: Invalid path /run/cgmanager/fs/devices///lxc/maas-dev-11/system.slice/tgt.service (No such file or directory)
  Nov 20 11:56:20 ltrager-laptop cgmanager[1018]: cgmanager:list_keys_main: Could not determine the requested cgroup (devices:lxc/maas-dev-11/system.slice/tgt.service)
  Nov 20 11:56:20 ltrager-laptop lxcfs[1019]: ** (process:1019): WARNING **: cgmanager method call org.linuxcontainers.cgmanager0_0.ListKeys failed: GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: invalid request.  Use G_DBUS_DEBUG=message for more info.
  Nov 20 11:56:20 ltrager-laptop lxcfs[1019]: rmdir: verifying access to devices:lxc/maas-dev-11/system.slice (req path /cgroup/devices/lxc/maas-dev-11/system.slice/tgt.service)
  Nov 20 11:56:20 ltrager-laptop lxcfs[1019]: rmdir: verifying access to name=systemd:lxc/maas-dev-11/system.slice/tgt.service (req path /cgroup/name=systemd/lxc/maas-dev-11/system.slice/tgt.service/control)
  Nov 20 11:56:20 ltrager-laptop lxcfs[1019]: rmdir: verifying access to name=systemd:lxc/maas-dev-11/system.slice (req path /cgroup/name=systemd/lxc/maas-dev-11/system.slice/tgt.service)
  Nov 20 11:56:20 ltrager-laptop cgmanager[1018]: cgmanager: Invalid path /run/cgmanager/fs/devices///lxc/maas-dev-11/system.slice/tgt.service (No such file or directory)
  Nov 20 11:56:20 ltrager-laptop cgmanager[1018]: cgmanager:list_keys_main: Could not determine the requested cgroup (devices:lxc/maas-dev-11/system.slice/tgt.service)
  Nov 20 11:56:20 ltrager-laptop lxcfs[1019]: ** (process:1019): WARNING **: cgmanager method call org.linuxcontainers.cgmanager0_0.ListKeys failed: GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: invalid request.  Use G_DBUS_DEBUG=message for more info.
  Nov 20 11:56:20 ltrager-laptop lxcfs[1019]: rmdir: verifying access to devices:lxc/maas-dev-11/system.slice (req path /cgroup/devices/lxc/maas-dev-11/system.slice/tgt.service)

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