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handleContainerExit: put a timeout on containerd DeleteTask

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Also move c.Lock() below containerd delete task, as it doesn't seem that
there is any necessity to hold the container lock while containerd is
killing the task.

This fixes a potential edge-case where containerd delete task hangs, and
thereafter all operations on the container would hang forever, as this
function is holding onto the container lock.

Signed-off-by: Cam <gh@sparr.email>
This commit is contained in:
Cam 2020-11-02 19:56:58 -08:00
parent b6bfff2a62
commit 05c20a6e1c
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GPG key ID: EE812B08DF32F58C
1 changed files with 6 additions and 4 deletions
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10
daemon/monitor.go
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@ -26,15 +26,17 @@ func (daemon *Daemon) setStateCounter(c *container.Container) {
func (daemon *Daemon) handleContainerExit(c *container.Container, e *libcontainerdtypes.EventInfo) error {
c.Lock()
ec, et, err := daemon.containerd.DeleteTask(context.Background(), c.ID)
ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
ec, et, err := daemon.containerd.DeleteTask(ctx, c.ID)
cancel()
if err != nil {
logrus.WithError(err).Warnf("failed to delete container %s from containerd", c.ID)
logrus.WithError(err).WithField("container", c.ID).Warnf("failed to delete container from containerd")
}
ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
ctx, cancel = context.WithTimeout(context.Background(), 2*time.Second)
c.StreamConfig.Wait(ctx)
cancel()
c.Reset(false)
exitStatus := container.ExitStatus{