On Fri, Sep 16, 2016 at 11:02:10AM +0200, Marcin Mirosław wrote:

W dniu 16.09.2016 o 10:38, Kent Overstreet pisze:
[...]

quoted

I haven't yet tried randomly flipping the compression type at runtime, I'll try
that now...

Don't forget changing other options, simply changing compression type I
tested some times ago and it worked;) I think that also heavy writes
while making changes are important.

Yeah, I think you're right about heavy writes - the one other bug remotely like
this that's been reported was an intermittent deadlock under heavy write load.

But "heavy write workload" describes a lot of the tests I already have, so I'm
not sure what I'm missing. Argh.