> The problem is about cache coherency. Local files work just fine with > cache=writeback, but if you migrate to a different host, you get the problem > that the destination kernel may cache some parts of the image while the source > is still writing to it. When you do the actual switch to the destination host > and > the backend doesn't take care of invalidating that cache, you might > (partially) > read outdated data.
Isn't there a way to force a cache flush?
