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Add ContainerStateExited and OCI delete() in cleanup()

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To work better with Kata containers, we need to delete() from the
OCI runtime as a part of cleanup, to ensure resources aren't
retained longer than they need to be.

To enable this, we need to add a new state to containers,
ContainerStateExited. Containers transition from
ContainerStateStopped to ContainerStateExited via cleanupRuntime
which is invoked as part of cleanup(). A container in the Exited
state is identical to Stopped, except it has been removed from
the OCI runtime and thus will be handled differently when
initializing the container.

Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
This commit is contained in:
Matthew Heon
2018-09-23 18:04:29 -04:00
parent 89c5804fe0
commit 2c7f97d5a7
11 changed files with 99 additions and 86 deletions
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5
libpod/runtime_pod_linux.go
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@ -222,7 +222,7 @@ func (r *Runtime) removePod(ctx context.Context, p *Pod, removeCtrs, force bool)
// As we have guaranteed their dependencies are in the pod
for _, ctr := range ctrs {
// Clean up network namespace, cgroups, mounts
if err := ctr.cleanup(); err != nil {
if err := ctr.cleanup(ctx); err != nil {
return err
}
@ -233,7 +233,8 @@ func (r *Runtime) removePod(ctx context.Context, p *Pod, removeCtrs, force bool)
// Delete the container from runtime (only if we are not
// ContainerStateConfigured)
if ctr.state.State != ContainerStateConfigured {
if ctr.state.State != ContainerStateConfigured &&
ctr.state.State != ContainerStateExited {
if err := ctr.delete(ctx); err != nil {
return err
}