1.查看linux机器属于物理机/虚拟机
参考:https://www.cnblogs.com/klb561/p/10527197.html
[root@dbaas-test-control-1 ~]# dmesg|grep -i virtual
[ 0.000000] Booting paravirtualized kernel on KVM 包含这个,说明虚拟机
[ 0.198686] KVM setup paravirtual spinlock
[ 0.746127] input: VirtualPS/2 VMware VMMouse as /devices/platform/i8042/serio1/input/input2
[ 0.746397] input: VirtualPS/2 VMware VMMouse as /devices/platform/i8042/serio1/input/input3
[ 0.759869] systemd[1]: Detected virtualization kvm.
[ 0.787907] systemd[1]: Starting Setup Virtual Console...
2.生成指定大小的文件
例如生成50M大小的文件
dd if=/dev/zero of=50M.file bs=1M count=50