Hello Dan, thanks for the input. > > This seems wrong... we should be checking with the metadata handler > before allowing a level change to occur. It's only luck that a > raid5-to-raid6 conversion is currently broken by an inability to set > stripe_cache_size. So I would do the call to update_super() before > the level is changed to give the handler a chance to abort > orom/metadata incompatible level changes. > Sure, but do you mean calling update_super() or rather validate_geometry() ? Update_super() is called after kernel takeover... So, maybe just before kernel level change we should check the metadata handler (validate_geometry) to check current level capabilities...?? -- Maciek. -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html