This is done to allow callers to be notified when the checkpoint/restore is
done, instead of requiring caller to constantly poll.
As a result, the checkpoint_count file was removed (it isn't needed anymore)
and the command runsc wait --checkpoint doesn't take the checkpoint
generation parameter anymore. This is done also because an external caller is
not able to know the snapshot generation number.
Change /proc/gvisor/checkpoint to block on read
This is done to allow callers to be notified when the checkpoint/restore is done, instead of requiring caller to constantly poll.
As a result, the
checkpoint_countfile was removed (it isn't needed anymore) and the commandrunsc wait --checkpointdoesn't take the checkpoint generation parameter anymore. This is done also because an external caller is not able to know the snapshot generation number.