I am getting the following error and need help from someone Test environment CentOS 6.5 Linux kernel: 3.8.8, 64 bit FIO version: fio-2.11 I run the following command > ./fio --name=test_workld --ioengine=libaio --direct=1 --rw=randrw --norandommap --randrepeat=0 --rwmixread=40 --rwmixwrite=60 --iodepth=256 --size=100% --numjobs=4 --bssplit=512/4:64k/96 --random_distribution=zoned:50/5:50/95 --overwrite=1 --output=test_op --filename=/dev/nvme0n1 --group_reporting --runtime=1m --time_based This means, I'm using libaio, with a queue depth of 256, and fio is utilizing asynchronous IO engines. But when i run this command, it results into an error "Invalid argument". If i change the parameter --direct=0, I'm able to issue the command successfully. Can you help me to understand, why with direct=1, the fio command results in an error ? Thanks Nitin -- To unsubscribe from this list: send the line "unsubscribe fio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
