[Bug 1742250] Re: Adding and deleting a veth leaks a systemd unit

[Shaun Crampton]

As a workaround, running

    systemctl daemon-reload

removes all the leaked units.

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to systemd in Ubuntu.
https://bugs.launchpad.net/bugs/1742250

Title:
  Adding and deleting a veth leaks a systemd unit

Status in systemd package in Ubuntu:
  New

Bug description:
  When I add a veth device:

      sudo ip link add name test1 type veth

  I see these systemd units appear:

      systemctl list-units --all | grep test

       sys-devices-virtual-net-test1.device
               loaded    active   plugged   /sys/devices/virtual/net/test1

       sys-subsystem-net-devices-test1.device
               loaded    active   plugged   /sys/subsystem/net/devices/test1

  However, if I then delete the veth:

      sudo ip link del dev test1

  Then only one of the units is removed:

      systemctl list-units --all | grep test

        sys-devices-virtual-net-test1.device
               loaded    active   plugged   /sys/devices/virtual/net/test1

  This is a big problem when running, for example, a Kubernetes cluster
  since each pod creation/deletion leaks a systemd unit.  When enough
  have been leaked, systemd becomes unresponsive and the system is
  broken until reboot.

  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: systemd 234-2ubuntu12.1
  ProcVersionSignature: Ubuntu 4.13.0-21.24-generic 4.13.13
  Uname: Linux 4.13.0-21-generic x86_64
  ApportVersion: 2.20.7-0ubuntu3.6
  Architecture: amd64
  Date: Tue Jan  9 18:57:34 2018
  Lsusb: Error: command ['lsusb'] failed with exit code 1:
  MachineType: Google Google Compute Engine
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-21-generic root=UUID=c66b8cf4-2a6c-4fb3-9f39-59483a6a025c ro scsi_mod.use_blk_mq=Y console=ttyS0
  SourcePackage: systemd
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 01/01/2011
  dmi.bios.vendor: Google
  dmi.bios.version: Google
  dmi.board.asset.tag: 1AF4A7E8-D62B-D331-0693-3511A041DD96
  dmi.board.name: Google Compute Engine
  dmi.board.vendor: Google
  dmi.chassis.type: 1
  dmi.chassis.vendor: Google
  dmi.modalias: dmi:bvnGoogle:bvrGoogle:bd01/01/2011:svnGoogle:pnGoogleComputeEngine:pvr:rvnGoogle:rnGoogleComputeEngine:rvr:cvnGoogle:ct1:cvr:
  dmi.product.name: Google Compute Engine
  dmi.sys.vendor: Google

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1742250/+subscriptions