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Add emptyDir volume support to kube play

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When a kube yaml has a volume set as empty dir, podman
will create an anonymous volume with the empty dir name and
attach it to the containers running in the pod. When the pod
is removed, the empy dir volume created is also removed.

Add tests and docs for this as well.

Signed-off-by: Urvashi Mohnani <umohnani@redhat.com>
This commit is contained in:
Urvashi Mohnani
2022-07-24 19:44:41 -04:00
parent 57441b4c71
commit 98169c20dd
11 changed files with 98 additions and 15 deletions
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11
libpod/runtime_ctr.go
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@ -474,6 +474,11 @@ func (r *Runtime) setupContainer(ctx context.Context, ctr *Container) (_ *Contai
return nil, fmt.Errorf("error retrieving named volume %s for new container: %w", vol.Name, err)
}
}
if vol.IsAnonymous {
// If SetAnonymous is true, make this an anonymous volume
// this is needed for emptyDir volumes from kube yamls
isAnonymous = true
}
logrus.Debugf("Creating new volume %s for container", vol.Name)
@ -814,11 +819,11 @@ func (r *Runtime) removeContainer(ctx context.Context, c *Container, force, remo
// Ignore error, since podman will report original error
volumesFrom, _ := c.volumesFrom()
if len(volumesFrom) > 0 {
logrus.Debugf("Cleaning up volume not possible since volume is in use (%s)", v)
logrus.Debugf("Cleaning up volume not possible since volume is in use (%s)", v.Name)
continue
}
}
logrus.Errorf("Cleaning up volume (%s): %v", v, err)
logrus.Errorf("Cleaning up volume (%s): %v", v.Name, err)
}
}
}
@ -968,7 +973,7 @@ func (r *Runtime) evictContainer(ctx context.Context, idOrName string, removeVol
continue
}
if err := r.removeVolume(ctx, volume, false, timeout, false); err != nil && err != define.ErrNoSuchVolume && err != define.ErrVolumeBeingUsed {
logrus.Errorf("Cleaning up volume (%s): %v", v, err)
logrus.Errorf("Cleaning up volume (%s): %v", v.Name, err)
}
}
}