OSV的初体验

http://osv.io/， 上面有讲一下design，但都比较零散，我也只是大概的看了下。

当打开https://github.com/cloudius-systems/osv/wiki感觉还不错，可能以前用github比较少的原因吧，以后个人的project可以放到这上面来，还有markdown也不错，准备学习下。

下面是我开始接触OSV的一些过程。

首先我git clone了osv-master的代码，按照README编译了，

console output:

root@lanfeng-OptiPlex-990:~/osv/osv# ./scripts/run.py

OSv v0.24-51-g0ccc4ec

eth0: 192.168.122.15

/#

应该只是一个裸的os

接下来按照github上download了一个别人编译过的image试试， 不过运行的时候无法连接

env: 

host os:15-Ubuntu

libvirt version:1.2.12

qemu-system-x86_64 -vnc :1 -gdb tcp::1234,server,nowait -m 2G -smp 2 -chardev stdio,mux=on,id=stdio -mon chardev=stdio,mode=readline,default -device isa-serial,chardev=stdio -drive file=osv-v0.24.qemu.qcow2,if=virtio,cache=unsafe -netdev tap,id=hn0,script=qemu-ifup.sh,vhost=on
-device virtio-net-pci,netdev=hn0,id=nic1 -device virtio-rng-pci -enable-kvm -cpu host,+x2apic

OSv v0.24

eth0: 192.168.122.89

pthread_setcancelstate() stubbed

/# monitoring-agent failed: connect failed Operation canceled

不过这个问题在osvsv官方上有说明。

next就想跑一下自己的程序，只是出来个hello world......

我找了下apps下netperf，正好现在我在过kvm 上guest的performance，也想看看osv上性能怎么样，当然没有其他workload的情况下，估计也提高不到哪去。

root@lanfeng-OptiPlex-990:~/osv/osv# ./scripts/build image=netperf

Building into build/release.x64

  GEN gen/include/osv/version.h

No such image configuration: netperf. Assuming list of modules.

Importing /root/osv/osv/apps/netperf/module.py

Modules:

  netperf.*

make: Nothing to be done for 'module'.

Preparing usr.manifest

Appending /root/osv/osv/apps/netperf/usr.manifest to usr.manifest

Preparing bootfs.manifest

Saving command line to /root/osv/osv/build/release.x64/cmdline

OSv v0.24-51-g0ccc4ec

eth0: 192.168.122.15

Running mkfs...

Adding /libenviron.so...

Adding /zpool.so...

Adding /libzfs.so...

Adding /libuutil.so...

Adding /zfs.so...

Adding /tools/mkfs.so...

Adding /tools/cpiod.so...

Adding /tools/mount-nfs.so...

Adding /tools/umount.so...

Adding /usr/lib/libgcc_s.so.1...

Adding /usr/lib/libpthread.so.0...

Adding /usr/lib/libboost_filesystem.so.1.55.0...

Adding /usr/lib/libboost_regex.so.1.55.0...

Adding /etc/hosts...

Link /etc/mnttab to /proc/mounts ...

Adding /etc/fstab...

Adding /dev...

Adding /proc...

Adding /tmp...

Adding /tools/netserver.so...

Adding /tools/netperf.so...

root@lanfeng-OptiPlex-990:~/osv/osv# scripts/run.py -nv  --verbose

OSv v0.24-51-g0ccc4ec

4 CPUs detected

Firmware vendor: SeaBIOS

bsd: initializing - done

VFS: mounting ramfs at /

VFS: mounting devfs at /dev

RAM disk at 0x0xffff800002841040 (4096K bytes)

net: initializing - done

vga: Add VGA device instance

eth0: ethernet address: 52:54:00:12:34:56

virtio-blk: Add blk device instances 0 as vblk0, devsize=10737418240

random: virtio-rng registered as a source.

random: <Software, Yarrow> initialized

VFS: unmounting /dev

VFS: mounting zfs at /zfs

zfs: mounting osv/zfs from device /dev/vblk0.1

VFS: mounting devfs at /dev

VFS: mounting procfs at /proc

program zpool.so returned 1

BSD shrinker: event handler list found: 0xffffa00001a62980

        BSD shrinker found: 1

BSD shrinker: unlocked, running

[I/43 dhcp]: Waiting for IP...

[I/246 dhcp]: Server acknowledged IP for interface eth0

eth0: 192.168.122.89

[I/246 dhcp]: Configuring eth0: ip 192.168.122.89 subnet mask 255.255.255.0 gateway 192.168.122.1 MTU 1500

Starting netserver with host 'IN(6)ADDR_ANY' port '12865' and family AF_INET

然后我用客户端测试下，倒是运行起来了，但性能吧几乎没多少提升，

需要注意的-nv，需要-nv选项这样就会在host上生成一个tap，要不然只是会kvm自带的内部网络。还有就是记得在scripts目录下吧qemu_up.sh脚本拷贝进去