mq io scheduler framework
driver tag for internal command
no coherent memory allocation failure
it is ok to transfer 4k bytes
but not works if 40k is transfered
what happened in the completion path?
but fio doesn't work fine
dd if=/dev/rssda of=/dev/null bs=512 count=1
rq passed to mtip32xx is correct
sg generated is correct
echo mq-deadline > ....
Hardware error from APEI
reading partition table from kernel
read 16k by dd