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path: root/libpod/runtime_pod_linux.go
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Diffstat (limited to 'libpod/runtime_pod_linux.go')
-rw-r--r--libpod/runtime_pod_linux.go126
1 files changed, 81 insertions, 45 deletions
diff --git a/libpod/runtime_pod_linux.go b/libpod/runtime_pod_linux.go
index 0011c771a..5867b1f87 100644
--- a/libpod/runtime_pod_linux.go
+++ b/libpod/runtime_pod_linux.go
@@ -149,10 +149,10 @@ func (r *Runtime) removePod(ctx context.Context, p *Pod, removeCtrs, force bool)
}
// Go through and lock all containers so we can operate on them all at once
- dependencies := make(map[string][]string)
for _, ctr := range ctrs {
- ctr.lock.Lock()
- defer ctr.lock.Unlock()
+ ctrLock := ctr.lock
+ ctrLock.Lock()
+ defer ctrLock.Unlock()
// Sync all containers
if err := ctr.syncContainer(); err != nil {
@@ -177,23 +177,12 @@ func (r *Runtime) removePod(ctx context.Context, p *Pod, removeCtrs, force bool)
if len(ctr.state.ExecSessions) != 0 && !force {
return errors.Wrapf(ErrCtrStateInvalid, "pod %s contains container %s which has active exec sessions", p.ID(), ctr.ID())
}
-
- deps, err := r.state.ContainerInUse(ctr)
- if err != nil {
- return err
- }
- dependencies[ctr.ID()] = deps
}
- // Check if containers have dependencies
- // If they do, and the dependencies are not in the pod, error
- for ctr, deps := range dependencies {
- for _, dep := range deps {
- if _, ok := dependencies[dep]; !ok {
- return errors.Wrapf(ErrCtrExists, "container %s depends on container %s not in pod %s", ctr, dep, p.ID())
- }
- }
- }
+ // We maintain the invariant that container dependencies must all exist
+ // within the container's pod.
+ // No need to check dependencies as such - we're removing all containers
+ // in the pod at once, no dependency issues.
// First loop through all containers and stop them
// Do not remove in this loop to ensure that we don't remove unless all
@@ -220,18 +209,40 @@ func (r *Runtime) removePod(ctx context.Context, p *Pod, removeCtrs, force bool)
}
}
- // Start removing containers
- // We can remove containers even if they have dependencies now
- // As we have guaranteed their dependencies are in the pod
+ // Remove all containers in the pod from the state.
+ if err := r.state.RemovePodContainers(p); err != nil {
+ return err
+ }
+
+ var removalErr error
+
+ // Clean up after our removed containers.
+ // Errors here are nonfatal - the containers have already been evicted.
+ // We'll do our best to clean up after them, but we have to keep going
+ // and remove the pod as well.
+ // From here until we remove the pod from the state, no error returns.
for _, ctr := range ctrs {
+ // The container no longer exists in the state, mark invalid.
+ ctr.valid = false
+
+ ctr.newContainerEvent(events.Remove)
+
// Clean up network namespace, cgroups, mounts
if err := ctr.cleanup(ctx); err != nil {
- return err
+ if removalErr == nil {
+ removalErr = err
+ } else {
+ logrus.Errorf("Unable to clean up container %s: %v", ctr.ID(), err)
+ }
}
// Stop container's storage
if err := ctr.teardownStorage(); err != nil {
- return err
+ if removalErr == nil {
+ removalErr = err
+ } else {
+ logrus.Errorf("Unable to tear down container %s storage: %v", ctr.ID(), err)
+ }
}
// Delete the container from runtime (only if we are not
@@ -239,26 +250,24 @@ func (r *Runtime) removePod(ctx context.Context, p *Pod, removeCtrs, force bool)
if ctr.state.State != ContainerStateConfigured &&
ctr.state.State != ContainerStateExited {
if err := ctr.delete(ctx); err != nil {
- return err
+ if removalErr == nil {
+ removalErr = err
+ } else {
+ logrus.Errorf("Unable to remove container %s from OCI runtime: %v", ctr.ID(), err)
+ }
}
}
// Free the container's lock
if err := ctr.lock.Free(); err != nil {
- return err
+ if removalErr == nil {
+ removalErr = errors.Wrapf(err, "error freeing container %s lock", ctr.ID())
+ } else {
+ logrus.Errorf("Unable to free container %s lock: %v", ctr.ID(), err)
+ }
}
}
- // Remove containers from the state
- if err := r.state.RemovePodContainers(p); err != nil {
- return err
- }
-
- // Mark containers invalid
- for _, ctr := range ctrs {
- ctr.valid = false
- }
-
// Remove pod cgroup, if present
if p.state.CgroupPath != "" {
logrus.Debugf("Removing pod cgroup %s", p.state.CgroupPath)
@@ -266,10 +275,11 @@ func (r *Runtime) removePod(ctx context.Context, p *Pod, removeCtrs, force bool)
switch p.runtime.config.CgroupManager {
case SystemdCgroupsManager:
if err := deleteSystemdCgroup(p.state.CgroupPath); err != nil {
- // The pod is already almost gone.
- // No point in hard-failing if we fail
- // this bit of cleanup.
- logrus.Errorf("Error deleting pod %s cgroup %s: %v", p.ID(), p.state.CgroupPath, err)
+ if removalErr == nil {
+ removalErr = errors.Wrapf(err, "error removing pod %s cgroup", p.ID())
+ } else {
+ logrus.Errorf("Error deleting pod %s cgroup %s: %v", p.ID(), p.state.CgroupPath, err)
+ }
}
case CgroupfsCgroupsManager:
// Delete the cgroupfs cgroup
@@ -280,34 +290,60 @@ func (r *Runtime) removePod(ctx context.Context, p *Pod, removeCtrs, force bool)
conmonCgroupPath := filepath.Join(p.state.CgroupPath, "conmon")
conmonCgroup, err := cgroups.Load(v1CGroups, cgroups.StaticPath(conmonCgroupPath))
if err != nil && err != cgroups.ErrCgroupDeleted {
- return err
+ if removalErr == nil {
+ removalErr = errors.Wrapf(err, "error retrieving pod %s conmon cgroup", p.ID())
+ } else {
+ logrus.Debugf("Error retrieving pod %s conmon cgroup %s: %v", p.ID(), conmonCgroupPath, err)
+ }
}
if err == nil {
if err := conmonCgroup.Delete(); err != nil {
- logrus.Errorf("Error deleting pod %s conmon cgroup %s: %v", p.ID(), conmonCgroupPath, err)
+ if removalErr == nil {
+ removalErr = errors.Wrapf(err, "error removing pod %s conmon cgroup", p.ID())
+ } else {
+ logrus.Errorf("Error deleting pod %s conmon cgroup %s: %v", p.ID(), conmonCgroupPath, err)
+ }
}
}
cgroup, err := cgroups.Load(v1CGroups, cgroups.StaticPath(p.state.CgroupPath))
if err != nil && err != cgroups.ErrCgroupDeleted {
- return err
+ if removalErr == nil {
+ removalErr = errors.Wrapf(err, "error retrieving pod %s cgroup", p.ID())
+ } else {
+ logrus.Errorf("Error retrieving pod %s cgroup %s: %v", p.ID(), p.state.CgroupPath, err)
+ }
}
if err == nil {
if err := cgroup.Delete(); err != nil {
- logrus.Errorf("Error deleting pod %s cgroup %s: %v", p.ID(), p.state.CgroupPath, err)
+ if removalErr == nil {
+ removalErr = errors.Wrapf(err, "error removing pod %s cgroup", p.ID())
+ } else {
+ logrus.Errorf("Error deleting pod %s cgroup %s: %v", p.ID(), p.state.CgroupPath, err)
+ }
}
}
default:
- return errors.Wrapf(ErrInvalidArg, "unknown cgroups manager %s specified", p.runtime.config.CgroupManager)
+ // This should be caught much earlier, but let's still
+ // keep going so we make sure to evict the pod before
+ // ending up with an inconsistent state.
+ if removalErr == nil {
+ removalErr = errors.Wrapf(ErrInternal, "unrecognized cgroup manager %s when removing pod %s cgroups", p.runtime.config.CgroupManager, p.ID())
+ } else {
+ logrus.Errorf("Unknown cgroups manager %s specified - cannot remove pod %s cgroup", p.runtime.config.CgroupManager, p.ID())
+ }
}
}
// Remove pod from state
if err := r.state.RemovePod(p); err != nil {
+ if removalErr != nil {
+ logrus.Errorf("%v", removalErr)
+ }
return err
}
// Mark pod invalid
p.valid = false
p.newPodEvent(events.Remove)
- return nil
+ return removalErr
}
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-12-27 09:49:41 +0000