[转]qemu安装虚拟机

转自

https://wiki.ubuntu.com/ARM64/QEMU

 https://gist.github.com/george-hawkins/16ee37063213f348a17717a7007d2c79

https://morningd.github.io/2018/01/08/how-to-run-aarch64-ubuntu-server-cloudimg-on-x86-64/

https://www.cnblogs.com/jinanxiaolaohu/p/11003388.html

AArch64上qemu起虚拟机的过程

1.编译安装aarch64的qemu

这里用的是spdk-3.0.0  qemu
Mkdir build && cd build
../configure --target-list=aarch64-softmmu --enable-debug
 make && make install

 

2.安装qemu-efi

sudo apt-install qemu-efi

生成的文件在 /usr/share/qemu-efi/QEMU_EFI.fd
wget https://releases.linaro.org/components/kernel/uefi-linaro/latest/release/qemu64/QEMU_EFI.fd  这个 估计有问题，用上面的！

3. flash0.img为UEFI固件，flash1为UEFI vars 
dd if=/dev/zero of=flash0.img bs=1M count=64
dd if=/usr/share/qemu-efi/QEMU_EFI.fd of=flash0.img conv=notrunc
dd if=/dev/zero of=flash1.img bs=1M count=64

来自 <https://wiki.ubuntu.com/ARM64/QEMU>

 

4. 下载的image地址 https://cloud-images.ubuntu.com/releases/bionic/release/

要备份一下，后面会被修改？？

 

5.改密码方法：
5.1.写文件cloud.txt
#cloud-config
password: root
chpasswd: { expire: False }
ssh_pwauth: True
5.2.生成cloud.img
cloud-localds cloud.img cloud.txt

5.3.修改qemu参数：

在boot的driver后面 加上
-drive if=none,id=cloud,file=cloud.img
-device virtio-blk-device,drive=cloud

5.4.问题

问题同 https://www.cnblogs.com/jinanxiaolaohu/p/11003388.html
起qemu后可能起不来，进入shell了，按顺序输入 fs0：  ls   cd EFI/BOOT    ls  
会有BOOTAA64.EFI的文件， 输入该文件  即可
登录   ubuntu：root
解决：【要重新dd两个 flash0.img 和 flash1.img ，改密码后会被污染？？ 】

 

#!/bin/bash
taskset -c 2,3 ../qemu-spdk300/build/aarch64-softmmu/qemu-system-aarch64
-m 1G
-smp 2 
-machine virt,accel=kvm,gic-version=host
-nographic
-cpu host
-pflash flash0.img
-pflash flash1.img
-drive if=none,file=bionic-server-cloudimg-arm64.img,id=hd0
-device virtio-blk-device,drive=hd0
-drive if=none,id=cloud,file=cloud.img
-device virtio-blk-device,drive=cloud
-serial stdio
-nodefaults
-no-acpi
-no-user-config
-display none
-netdev user,id=user0,hostfwd=tcp::3333-:22
-device virtio-net-pci,netdev=user0

 

 

6.qemu模拟OCSSD

6.1
touch myocssd0-datafile  myocssd0-metadatafile
sudo fallocate -l 384G myocssd0-datafile

 

#!/bin/bash
./qemu/build/aarch64-softmmu/qemu-system-aarch64
-machine virt,accel=kvm,gic-version=host,usb=off
-cpu host -m 8192     #要分配足够大，不然设置hugepage后会out-of-memory
-pflash flash0.img
-pflash flash1.img
-nographic
-drive if=none,file=ubuntu-16.04-server-cloudimg-arm64-uefi1.img,id=hd0
-device virtio-blk-device,drive=hd0
-drive format=raw,file=myocssd0-datafile,if=none,id=myocssd0
-device nvme,drive=myocssd0,serial=deadbeef,lver=2,lba_index=3,lnum_ch=1,lnum_lun=8,lnum_pln=4,lpgs_per_blk=1536,lsecs_per_pg=4,lblks_per_pln=512,lmetadata=myocssd0-metadatafile
-monitor unix:qemu-monitor-socket,server,nowait

 

6.2 登陆虚拟机后：
修改 /etc/default/grub     加上 iommu.passthrough=1 hugepagesz=2M hugepages=2048
sudo update-grub 重启 之后

6.3下载编译spdk
sudo ./scripts/setup.sh
输出  0000:00:02.0 (1d1d 1f1f): nvme -> uio_pci_generic

sudo ./examples/nvme/identify/identify
输出：

Starting SPDK v19.07-pre / DPDK 19.02.0 initialization...
[ DPDK EAL parameters: identify --no-shconf -c 0x1 -n 1 -m 0 --log-level=lib.eal:6 --log-level=lib.cryptodev:5 --log-level=user1:6 --base-virtaddr=0x200000000000 --match-allocations --file-prefix=spdk_pid9915 ]
=====================================================
NVMe Controller at 0000:00:02.0 [1d1d:1f1f]
=====================================================
Controller Capabilities/Features
================================
Vendor ID:                             1d1d
Subsystem Vendor ID:                   1af4
Serial Number:                         deadbeef
Model Number:                          QEMU NVMe Ctrl
·······
Namespace OCSSD Geometry
=======================
OC version:                     maj:2 min:0
LBA format:
  Group bits:                   0
  PU bits:                      3
  Chunk bits:                   9
  Logical block bits:           15
Media and Controller Capabilities:
  Namespace supports Vector Chunk Copy:                 Supported
  Namespace supports multiple resets a free chunk:      Not Supported
Wear-level Index Delta Threshold:                       0
Groups (channels):              1
PUs (LUNs) per group:           8
Chunks per LUN:                 512
Logical blks per chunk:         24576
MIN write size:                 4
OPT write size:                 16
Cache min write size:           16
Max open chunks:                0
Max open chunks per PU:         0

OCSSD Chunk Info Glance
·············

6.4 执行 sudo ./test/ftl/bdevperf.sh 0000:00:02.0
【生成的config是：test/ftl/config/ftl.conf
  [Ftl]
  TransportID "trtype:PCIe traddr:0000:00:02.0" nvme0 0-3 00000000-0000-0000-0000-000000000000
】

sudo ./test/bdev/bdevperf/bdevperf  -c test/ftl/config/ftl.conf  -q 1 -w randwrite -t 1 -o 69632

 

 

7.其他

-monitor unix:qemu-monitor-socket,server,nowait
启动之后在另一个shell的同一个目录下中： socat - unix-connect:qemu-monitor-socket
info可以看到信息