On Tue, Jun 11, 2024 at 03:51:27PM -0400, Martin K. Petersen wrote: > > But how do you even toggle the flag? There is no no code to do that. > > And if you already have a special kernel module for that it really > > should just use a passthrough request to take care of that. > > A passthrough command to the controller? A passthrough command to the LU that has a mismatching checksum. > > Note that unlike the NOCHECK flag which I just cleaned up because they > > were unused, this one actually does get in the way of the architecture > > of the whole series :( We could add a per-bip csum_type but it would > > feel really weird. > > Why would it feel weird? That's how it currently works. Because there's no way to have it set to anything but the per-queue one. > The qualification tool issues a flurry of commands injecting errors at > various places in the stack to identify that the right entity (block > layer, controller, storage device) catch a bad checksum, reference tag, > etc. How does it do that? There's no actualy way to make it mismatch.
