fio搞坏于修复

fio -filename=/dev/sda -direct=1 -iodepth 1 -thread -rw=randrw -rwmixread=70 -ioengine=psync -bs=16k -size=2G -numjobs=10 -runtime=60 -group_reporting -name=mytest

fio -filename=/dev/sda -direct=1 -iodepth 1 -thread -rw=read  -ioengine=psync -bs=16k -size=2G -numjobs=10 -runtime=60 -group_reporting -name=mytest

fio -filename=/dev/sda -direct=1 -iodepth 1 -thread -rw=randwrite  -ioengine=psync -bs=16k -size=2G -numjobs=10 -runtime=60 -group_reporting -name=mytest

fio -filename=/dev/sda -direct=1 -iodepth 1 -thread -rw=write  -ioengine=psync -bs=16k -size=2G -numjobs=10 -runtime=60 -group_reporting -name=mytest

fio -filename=/tmp/newfile -direct=1 -iodepth 1 -thread -rw=read -ioengine=psync -bs=1M -size=20G -numjobs=50 -runtime=60 -group_reporting -name=sqe_100read

fio -filename=/dev/sda1 -direct=1 -iodepth 1 -thread -rw=randrw -rwmixread=70 -ioengine=psync -bs=16k -size=2G -numjobs=10 -runtime=60 -group_reporting -name=mytest

fio -filename=/dev/sda -direct=1 -iodepth 1 -thread -rw=randrw -rwmixread=70 -ioengine=psync -bs=16k -size=2G -numjobs=10 -runtime=60 -group_reporting -name=mytest

hdparm -t /home2/sdb2

hdparm -t /dev/sda

yum install libaio-devel fio

查看磁盘分区：lsblk

=========随机读写的杀人凶手，坑害队友必备============
fio -direct=1 -iodepth 1 -rw=randrw -ioengine=libaio -bs=4k -size=500m -numjobs=1 -runtime=30 -group_reporting -filename=/dev/sda1 -name=mytest --allow_mounted_write=1

fio -direct=1 -iodepth 1 -rw=randrw -ioengine=libaio -bs=4k -size=500m -numjobs=1 -runtime=30 -group_reporting -filename=/dev/vdb -name=mytest --allow_mounted_write=1

=========正确的写法============

mkdir /test/
fio -directory=/test/ -name=tempfile.dat -direct=1 -rw=randrw -bs=4k -size=500m -numjobs=1 -runtime=30 -group_reporting

local-lvm:vm-1021-disk-0,cache=writeback,size=200G,"Async IO"=threads