nvme list
lspci -vvv | grep -i nvme
dd if=/目录/test of=/dev/null bs=1M count=1024 iflag=direct
dd if=/dev/zero of=/目录/test bs=1M count=1024 oflag=direct
nvme list
lspci -vvv | grep -i nvme
dd if=/目录/test of=/dev/null bs=1M count=1024 iflag=direct
dd if=/dev/zero of=/目录/test bs=1M count=1024 oflag=direct