ext4: 3.17? problems

[Jan Kara]

So I had to hard power-down the machine. That should be perfectly
safe, as ext4 has a journal, and this is plain SATA disk, right?

Yes, it should be safe.

Good.

...

Is there some phase during shutdown where journalling no longer
protects fs integrity?

Hmm... what kind of backing device? Because I have Crucial/Micron M500 SSDs
here that _always_ complain (in a SMART counter/attribute) that they have
been subject to a sudden poweroff *when subject to a normal system
shutdown*.
This is scaring me a great deal. Are we doing something different for SSDs
in the scsi-sd or libata shutdown paths?

Nothing I'm aware of but this is more a question for SCSI guys (added to
CC).

Honza