tree ad90231752ed491869e3ce49225497daf55cd359
parent 01d37561a6ef969bfc0ce46f566954e8c8371dcf
author Milton Miller <miltonm@us.ibm.com> 1464047070 -0500
committer Milton Miller <miltonm@us.ibm.com> 1466699135 -0500

initfs: shutdown: comment on update success

Print an error from the shutdown script when the update fails.

Update is changing to return codes when its preconditions are not
met, so be more verbose about its success to provide a means to
debug flash updates not occurring.

We could add a sulogin or sushell but its not clear what would be
desired here.  If so the message should include "rmdir /oldroot
to get a PID 1 shell" like /takever works in init.

Signed-off-by: Milton Miller <miltonm@us.ibm.com>