On Mon 2017-05-08 13:50:05, Boris Brezillon wrote:

On Mon, 08 May 2017 11:13:10 +0100
David Woodhouse [off-list ref] wrote:

quoted

On Mon, 2017-05-08 at 11:09 +0200, Hans de Goede wrote:

quoted

You're forgetting that the SSD itself (this thread is about SSDs) also has
a major software component which is doing housekeeping all the time, so even
if the main CPU gets reset the SSD's controller may still happily be erasing
blocks.  

We're not really talking about SSDs at all any more; we're talking
about real flash with real maintainable software.

It's probably a good sign that this new discussion should take place in
a different thread :-).

Well, you are right.. and I'm responsible.

What I was trying to point out was that storage people try to treat
SSDs as HDDs... and SSDs are very different. Harddrives mostly survive
powerfails (with emergency parking), while it is very, very difficult
to make SSD survive random powerfail, and we have to make sure we
always powerdown SSDs "cleanly".

									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html