Signals that an unmount failed before the mount was detached.
Only this error guarantees that the mount remains active and its teardown can
be retried, so registries may retain it. cause is the underlying failure that
prevented the unmount. Ordinary unmount errors make no such guarantee.
Signals that an unmount failed before the mount was detached.
Only this error guarantees that the mount remains active and its teardown can be retried, so registries may retain it.
causeis the underlying failure that prevented the unmount. Ordinary unmount errors make no such guarantee.