Doug, > What seems to be to be new is the three repeated sequence involving > the "a3 0c" command. That is REPORT SUPPORTED OPERATION CODES. > Why is the same sequence repeated 3 times?
One invocation is probably partition scanning. sd_probe calls revalidate twice. It used to be a somewhat tricky dance of doing it once to get basic device properties, then allocating the gendisk, and finally doing another revalidate pass to fill out the remaining fields that had a dependency on a gendisk being instantiated. Given some of the recent block changes, I am not entirely sure two calls are required. Would be interesting to test... -- Martin K. Petersen Oracle Linux Engineering
