>>>>> "Lars" == Lars Ellenberg <lars.ellenberg@xxxxxxxxxx> writes: Lars> Because the way we do some internal bookkeeping, we announce a max Lars> discard of 4 MiB. Yikes! Lars> Similar for the WRITE_SAME interface (which we do not properly Lars> support on the DRBD protocol level yet -- backward compatibility Lars> concerns -- but intend to support "soon"). Yeah, WRITE SAME can take a long time to complete too. However, we're typically issuing them 32 megs at a time. Lars> If we only have a synchronous interface, we will probably have to Lars> either add some "async wrapper", or defer such submissions to Lars> worker threads. I'd prefer to have an async submit path. OK, I'll chew on it. -- Martin K. Petersen Oracle Linux Engineering -- 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
