On Mon 2017-05-08 13:50:05, Boris Brezillon wrote: > On Mon, 08 May 2017 11:13:10 +0100 > David Woodhouse <dwmw2@xxxxxxxxxxxxx> wrote: > > > On Mon, 2017-05-08 at 11:09 +0200, Hans de Goede wrote: > > > 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
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