On Tue, Aug 06, 2013 at 02:02:24PM -0700, Kent Overstreet wrote:
> On Tue, Aug 06, 2013 at 01:56:50PM -0700, Darrick J. Wong wrote:
> > Ok, I've narrowed it down a little bit --
> > 
> > It's not caused by any of the fixes that went into 3.10.[1-5].  It doesn't 
> > seem
> > to be specific to any particular storage bus, controller, disk, or even 
> > cache
> > set -- the same bcache'd usb stick will crash my laptop and not crash my 
> > test
> > box.  The 4k/512b sector thing was a red herring; you can ignore that.
> 
> Ok, that makes more sense...
> 
> > The test box is a boring old Core2 box; the laptop is an Ivy Bridge.  I'll 
> > try
> > to enable more verbose PM debugging to see if I can determine what exactly's
> > going on at sleep time.  (Again, shooting in the dark...)
> 
> I just looked at the code and it appears there was a freezer fix that
> didn't make it into 3.10 and should have. Can you try the
> bcache-for-3.11 branch and see if that fixes it? If so, I'll get that
> patch sent out for stable.

The suspend problem seems to be gone with the for-3.11 branch.  The branch
seems to be based off 3.10-rc7... is that correct?

Also, is there any way to figure out how much of a cache device is actively
holding cached data?

--D
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