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很惭愧，就做了一点微小的工作

Dash

WorkingTipsOnVirtioOnArm64

May 13, 2022
Technology

步骤

安装必要的包:

$ sudo apt-get install -y qemu-system
$ ls /usr/share/AAVMF/AAVMF
AAVMF32_CODE.fd  AAVMF32_VARS.fd  AAVMF_CODE.fd    AAVMF_VARS.fd

WorkingtipsonT4

May 10, 2022
Technology

Steps

扫描 nvidia cards:

$ sudo lspci | grep -i nvidia
0000:01:00.0 3D controller: NVIDIA Corporation TU104GL [Tesla T4] (rev a1)
0001:01:00.0 3D controller: NVIDIA Corporation TU104GL [Tesla T4] (rev a1)
0006:01:00.0 3D controller: NVIDIA Corporation TU104GL [Tesla T4] (rev a1)
0007:01:00.0 3D controller: NVIDIA Corporation TU104GL [Tesla T4] (rev a1)

安装必要的包(nvidia驱动需要):

$ sudo apt-get update -y && sudo apt-get upgrade -y
$ sudo apt-get install -y build-essential

下载nvidia官方驱动:

/images/2022_05_10_14_19_32_592x306.jpg

安装驱动，nvidia驱动

$ sudo apt-get install -y nvidia-driver-local-repo-ubuntu2004-510.47.03_1.0-1_arm64.deb
$ sudo apt-get update -y
$ sudo apt-get install -y cuda-drivers cuda-drivers-510 libnvidia-gl-510 libnvidia-common-510=510.47.03-0ubuntu1

注意安装过程中nvidia驱动自动blacklist了开源的nvidia驱动:

A modprobe blacklist file has been created at /etc/modprobe.d to prevent Nouveau
from loading. This can be reverted by deleting the following file:
/etc/modprobe.d/nvidia-graphics-drivers.conf

A new initrd image has also been created. To revert, please regenerate your
initrd by running the following command after deleting the modprobe.d file:
`/usr/sbin/initramfs -u`

*****************************************************************************
*** Reboot your computer and verify that the NVIDIA graphics driver can   ***
*** be loaded.                                                            ***
*****************************************************************************

重启`sudo reboot"后继续执行后续操作

配置xorg

更改Xwrapper权限:

$ vim /etc/X11/Xwrapper.config
allowed_users = anybody

创建xorg配置文件:

sudo nvidia-xconfig

样例文件:

# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig:  version 510.47.03

Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "Screen0"
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"
EndSection

Section "Files"
EndSection

Section "InputDevice"
    # generated from default
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/psaux"
    Option         "Emulate3Buttons" "no"
    Option         "ZAxisMapping" "4 5"
EndSection

Section "InputDevice"
    # generated from default
    Identifier     "Keyboard0"
    Driver         "kbd"
EndSection

Section "Monitor"
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "Unknown"
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BusID          "PCI:1:0:0"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

拷贝三份，分别更改对应的BusID:

$ sudo mv /etc/X11/xorg.conf /etc/X11/xorg0.conf
$ sudo cp /etc/X11/xorg0.conf /etc/X11/xorg1.conf
    BusID          "PCI:1@1:0:0"
$ sudo cp /etc/X11/xorg0.conf /etc/X11/xorg2.conf
    BusID          "PCI:1@6:0:0"
$ sudo cp /etc/X11/xorg0.conf /etc/X11/xorg3.conf
    BusID          "PCI:1@7:0:0"

创建X Session:

$ sudo Xorg :60 -config /etc/X11/xorg0.conf -sharevts
$ sudo Xorg :61 -config /etc/X11/xorg1.conf -sharevts
$ sudo Xorg :62 -config /etc/X11/xorg2.conf -sharevts
$ sudo Xorg :63 -config /etc/X11/xorg3.conf -sharevts

检验:

$ export DISPLAY=:62
$ glmark2
=======================================================
    glmark2 2021.02
=======================================================
    OpenGL Information
    GL_VENDOR:     NVIDIA Corporation
    GL_RENDERER:   Tesla T4/PCIe
    GL_VERSION:    4.6.0 NVIDIA 510.47.03
=======================================================
[build] use-vbo=false: FPS: 7012 FrameTime: 0.143 ms
[build] use-vbo=true: FPS: 18139 FrameTime: 0.055 ms

=======================================================
                                  glmark2 Score: 14298 
=======================================================

跑分时可以看到对应的gpu上的负载已经启动了：

/images/2022_05_10_15_56_00_807x127.jpg

avd Integration

解压avd、lib到相应目录:

$ mkdir Android
$ tar xzvf /home/ctctest/avdavd.tar.gz -C .
$ cd /home/ctctest
$ tar xvf lib.tar
$ mv lib/* /usr/local/lib/

启动avd:

$ cd /home/Android/android-12
$ vim env_setup.sh
更改display 为 :62
$ source env_setup.sh
$ sudo ufw disable
$ sudo apt-get install -y openjdk-11-jdk libfdt1 librbd1 libjpeg62 libssl-dev
$ sudo cp /home/ctctest/libssl.so.1.0.0  /usr/lib/aarch64-linux-gnu
$ sudo cp /home/ctctest/libcrypto.so.1.0.0 /usr/lib/aarch64-linux-gnu
$ android create avd --name test_avd --target android-31 --abi arm64-v8a --device "Nexus 4" --skin 720x1280
Created AVD 'test_avd' based on Android 12, ARM (arm64-v8a) processor,
with the following hardware config:
hw.accelerometer=yes
hw.audioInput=yes
hw.battery=yes
hw.dPad=no
hw.device.hash2=MD5:6930e145748b87e87d3f40cabd140a41
hw.device.manufacturer=Google
hw.device.name=Nexus 4
hw.gps=yes
hw.keyboard=no
hw.lcd.density=320
hw.mainKeys=no
hw.sdCard=no
hw.sensors.orientation=yes
hw.sensors.proximity=yes
hw.trackBall=no

$ emulator -avd  test_avd  -feature Wifi -skip-adb-auth -no-snapshot -no-window -cores 8 -writable-system -partition-size 20480 -verbose -gpu swiftshader_indirect -qemu -D /home/ctctest/qemu.log -rtc base=utc,clock=rt  -enable-kvm -m 6124 -spice port=7001,addr=0.0.0.0,disable-ticketing,streaming-video=filter,seamless-migration=on -device virtio-serial-device -chardev spicevmc,id=charchannel0,name=vdagent -device virtserialport,nr=1,chardev=charchannel0,id=channel0,name=com.redhat.spice.0 -chardev spiceport,id=charchannel3,name=org.spice-space.data.0 -device virtserialport,nr=4,chardev=charchannel3,id=channel3,name=org.spice-space.data.0  -chardev spiceport,id=charchannel4,name=org.spice-space.usb.video.0 -device virtserialport,nr=5,chardev=charchannel4,id=channel4,name=org.spice-space.usb.video.0 -chardev spiceport,id=charchannel5,name=org.spice-space.usb.video.1 -device virtserialport,nr=6,chardev=charchannel5,id=channel5,name=org.spice-space.usb.video.1 -vnc :50

TipsForAOSPGPU

May 7, 2022
Technology

Translation mode:

# emulator -gpu host -qemu -cpu host

In adb shell :  
# dumpsys | grep -i opengl                                                                                                                                                                       
GLES: Google (AMD), Android Emulator OpenGL ES Translator (AMD Radeon RX 5700 (navi10, LLVM 14.0.0, DRM 3.35, 5.4.0-107-generic)), OpenGL ES 2.0 (4.6 (Core Profile) Mesa 22.2.0-devel (git-5e84335 2022-04-22 focal-oibaf-ppa))

generic_x86_64:/ # ls -l -h /dev/graphics/fb0       
crw-rw---- 1 root graphics 29,   0 2022-05-07 10:37 /dev/graphics/fb0

更改为virtio级别:

emulator感觉比较老了，需要换成cuttlefish来试验

InstallationOfBlissOSInVirtManager

May 6, 2022
Technology

Create the partition:

/images/2022_05_06_11_45_13_693x190.jpg

Use GPT? (no):

/images/2022_05_06_11_46_38_848x444.jpg

Choose partition:

/images/2022_05_06_11_47_44_717x180.jpg

ext4 format:

/images/2022_05_06_11_47_58_542x153.jpg

Make sure:

/images/2022_05_06_11_48_12_636x197.jpg

Install bootloader:

/images/2022_05_06_11_48_29_488x154.jpg

read/write:

/images/2022_05_06_11_48_46_570x160.jpg

Reboot:

/images/2022_05_06_11_50_04_481x249.jpg

AutoPingOpenWRT

Apr 24, 2022
Technology

坐标广州，家里申请的公网IP地址如果隔段时间不使用的话会被回收，每次回收后都要打电话弄回来，如何自动的让公网IP不被回收呢，就需要每次从外部Ping或者Get某个服务。下面是实现步骤。

前置条件

Call 10000, 人工服务，要求光猫上绑定公网IP,理由是家里装监控需要用到。

光猫设置

光猫上设置端口映射，如12222端口映射到某台OpenWRT的22端口.

OpenWRT设备设置

OpenWRT的dropbear设置ssh key:

cd /root/.ssh
dropbearkey -t rsa -f ~/.ssh/id_rsa
dropbearkey -y -f ~/.ssh/id_rsa | grep "^ssh-rsa " >> authorized_keys

拷贝authorized_keys到远端vps的authorized_keys文件中，由此实现无密码登陆。

撰写无码验证脚本

撰写/overlay/remote.sh文件如下:

#!/bin/sh
pIP=`wget -qO - http://icanhazip.com`
ssh -i /root/.ssh/id_rsa -p2xxxx root@1x.xx.xx.xx "ssh -p12222 -o StrictHostKeyChecking=no root@$pIP 'date'| tee /root/log.txt"

其中1x.xx.xx.xx为远端vps地址, 2xxxx为远端vps的ssh端口。

# chmod 777 /overlay/remote.sh

OpenWRT crontab

编辑crontab任务如下:

# crontab -e
@hourly /overlay/remote.sh

结论

由此实现了OpenWRT路由器上发起的每一个小时通过远程vps联会自己的公网地址上暴露的IP端口，由此可以保证公网IP永不过期.