ULV(Ultra Light-weight Virtualization)

• This project aims to present early prototyping of ultra light-weight virtualization for micro service and shared computing platform.
• Old ULV was based on LKL(Linux Kernel Library) + solo5 spt tender.
• The newly developed ULV is based on pure userland unikernel with no hypvervisor.

Build

• Build process is tested on ubuntu 20.04

Prerequistes

• gcc, g++, make, cmake
• musl-tools

Build ULV

• $ git submodule init && git submodule update
  • copy submodule lwip
• $ ./configure
  • auto configure
• $ make prep
  • builds lwip and musl
• $ make
  • builds libulv, libulfs and micro benchmarks

Running (micro benchmark)

• $ micro_benchmarks/mb_thread

  • pthread test under ULV

• $ micro_benchmarks/mb_syscall

  • simple system call test

• $ micro_benchmarks/mb_network <connect IP:port> [<bind IP>]

  • bind IP is an optional argument which is a local binding IP.
  • connect IP and port should be specified like as 192.168.12.100:30000.
  • before test, a tap device should be setup as follows.

    # ip tuntap add tap0 mode tap
    # ip link set tap0 up
    # ip addr add 192.168.11.175/24 dev tap0
    

  • And, 4 environment variables should be set
    • PRECONFIGURED_TAPIF=tap0
    • IPADDR=192.168.11.170 , IP address on unikernel
    • GWADDR=192.168.11.175 , IP address on host tap device as a gateway
    • NETMASK=255.255.255.0
  • echo server using ncat
    • ncat -l 20000 -k -c 'xargs -n1 echo'

• $ micro_benchmarks/mb_file <file path>

  • environment variable required. ULV_BLOCK=
  • unikernel file system can be generated as follows:
    • tools/ulfs/ulfs mkfs /tmp/testfile.img 10m

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_{This project was supported by Basic Science Research Program through the National Research Foundation of Korea(NRF) funded by the Ministry of Education(2020R1I1A1A01066121).}