D1上运行openEuler，其上运行java语言版本的helloworld的方法

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转载： https://zhuanlan.zhihu.com/p/401285641
D1上运行openEuler，其上运行java语言版本的helloworld的方法

1. 烧录openEuler镜像到TF并对TF扩容

在ubuntu20.04下，执行sudo fdisk -l查看TF卡盘符

jean@jean-virtual-machine:/mnt/hgfs/linux$ sudo fdisk -l
Disk /dev/sdb: 29.74 GiB, 31914983424 bytes, 62333952 sectors
Disk model: Storage Device  
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: EACEFD8D-68B3-493F-868A-5364E0A693D8

Device      Start      End  Sectors  Size Type
/dev/sdb1   34784    35039      256  128K Linux filesystem
/dev/sdb2   35040    35295      256  128K Linux filesystem
/dev/sdb3   35296   100831    65536   32M Linux filesystem
/dev/sdb4  102400 62333918 62231519 29.7G Linux filesystem

使用dd命令将openEuler镜像烧录到TF卡中

jean@jean-virtual-machine:/mnt/hgfs/linux$ bzcat openEuler-D1-wifi-hdmi-20210817.img.bz2 | sudo dd of=/dev/sdb bs=1M iflag=fullblock oflag=direct conv=fsync status=progress
1341128704 bytes (1.3 GB, 1.2 GiB) copied, 176 s, 7.6 MB/s 
1279+0 records in
1279+0 records out
1341128704 bytes (1.3 GB, 1.2 GiB) copied, 176.061 s, 7.6 MB/s

执行sudo fdisk -l查看TF卡分区

jean@jean-virtual-machine:/mnt/hgfs/linux$ sudo fdisk -l
Disk /dev/sdb: 29.74 GiB, 31914983424 bytes, 62333952 sectors
Disk model: Storage Device  
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: EACEFD8D-68B3-493F-868A-5364E0A693D8

Device      Start     End Sectors  Size Type
/dev/sdb1   34784   35039     256  128K Linux filesystem
/dev/sdb2   35040   35295     256  128K Linux filesystem
/dev/sdb3   35296  100831   65536   32M Linux filesystem
/dev/sdb4  100832 2619391 2518560  1.2G Linux filesystem

执行sudo fdisk /dev/sdb，对TF卡中的最后一个分区进行扩容

jean@jean-virtual-machine:/mnt/hgfs/linux$ sudo fdisk /dev/sdb

Welcome to fdisk (util-linux 2.34).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.

A hybrid GPT was detected. You have to sync the hybrid MBR manually (expert command 'M').

Command (m for help): p #查看并记录第四个分区的起始扇区

Disk /dev/sdb: 29.74 GiB, 31914983424 bytes, 62333952 sectors
Disk model: Storage Device  
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: EACEFD8D-68B3-493F-868A-5364E0A693D8

Device      Start     End Sectors  Size Type
/dev/sdb1   34784   35039     256  128K Linux filesystem
/dev/sdb2   35040   35295     256  128K Linux filesystem
/dev/sdb3   35296  100831   65536   32M Linux filesystem
/dev/sdb4  100832 2619391 2518560  1.2G Linux filesystem

Command (m for help): d #删除分区
Partition number (1-4, default 4): 4

Partition 4 has been deleted.

Command (m for help): n #新建分区
Partition number (4-128, default 4): 4
First sector (100832-62333918, default 102400): 100832 #和最开始记录的第四个分区的起始扇区相同
Last sector, +/-sectors or +/-size{K,M,G,T,P} (100832-62333918, default 62333918): 

Created a new partition 4 of type 'Linux filesystem' and of size 29.7 GiB.
Partition #4 contains a ext4 signature.

Do you want to remove the signature? [Y]es/[N]o: n

Command (m for help): w #写入修改
The device contains hybrid MBR -- writing GPT only. You have to sync the MBR manually.

The partition table has been altered.
Failed to update system information about partition 4: Invalid argument

The kernel still uses the old partitions. The new table will be used at the next reboot. 
Syncing disks.

对最后一个分区执行resize2fs命令

jean@jean-virtual-machine:/mnt/hgfs/linux$ sudo resize2fs /dev/sdb4
resize2fs 1.45.5 (07-Jan-2020)
Filesystem at /dev/sdb4 is mounted on /media/jean/rootfs; on-line resizing required
old_desc_blocks = 5, new_desc_blocks = 119
The filesystem on /dev/sdb4 is now 31116540 (1k) blocks long.

查看扩容后的TF卡分区

jean@jean-virtual-machine:/mnt/hgfs/linux$ sudo fdisk -l
Disk /dev/sdb: 29.74 GiB, 31914983424 bytes, 62333952 sectors
Disk model: Storage Device  
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: EACEFD8D-68B3-493F-868A-5364E0A693D8

Device      Start      End  Sectors  Size Type
/dev/sdb1   34784    35039      256  128K Linux filesystem
/dev/sdb2   35040    35295      256  128K Linux filesystem
/dev/sdb3   35296   100831    65536   32M Linux filesystem
/dev/sdb4  100832 62333918 62233087 29.7G Linux filesystem

到这里烧录openEuler并扩容TF卡就结束了

2. 安装java环境并运行hello world脚本
将上述烧录好的TF卡插入D1并启动D1, 用Xshell通过serial的方式连接D1，登录openEuler，用户名/密码：root/openEuler12#$

Connecting to COM3...
Connected.

openEuler-RISCV-rare login: root
Password: 
Last login: Thu Aug 19 02:37:06 on ttyS0


Welcome to 5.4.61

System information as of time:  Thu Aug 19 02:38:49 UTC 2021

System load:    2.38
Processes:  67
Memory used:    3.1%
Swap used:  0.0%
Usage On:   4%
IP address:     192.168.11.27
Users online:   1


[root@openEuler-RISCV-rare ~]#

执行df -h查看D1磁盘空间大小

[root@openEuler-RISCV-rare ~]# df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/root        29G  1.1G   27G   4% /
devtmpfs        996M     0  996M   0% /dev
tmpfs          1000M     0 1000M   0% /dev/shm
tmpfs          1000M  1.7M  999M   1% /run
tmpfs          1000M     0 1000M   0% /sys/fs/cgroup
tmpfs          1000M     0 1000M   0% /tmp
tmpfs           200M     0  200M   0% /run/user/0

在D1上执行ifconfig查询其IP地址，将JDK镜像通过SSH方式复制到D1的/dev/root目录下

D:\jean>scp -r OpenJDK11U-jdk_riscv64_linux_bisheng_2021-06-01-18-05.tar.gz root@192.168.11.27:/root
The authenticity of host '192.168.11.27 (192.168.11.27)' can't be established.
ECDSA key fingerprint is SHA256:VT2faxMh5NQxvxSF02D0P7wxOL4rb6shfTtcnjiSdd8.
Are you sure you want to continue connecting (yes/no)?
Warning: Permanently added '192.168.11.27' (ECDSA) to the list of known hosts.
root@192.168.11.27's password:
OpenJDK11U-jdk_riscv64_linux_bisheng_2021-06-01-18-05.tar.gz                          100%  165MB 339.0KB/s   08:17

解压JDK镜像，将其解压到/root/java目录下

[root@openEuler-RISCV-rare ~]# tar -zxvf OpenJDK11U-jdk_riscv64_linux_bisheng_2021-06-01-18-05.tar.gz -C /root/java/

进入/root/java/jdk-11.0.10+9/bin，执行./java -version验证java环境是否可以正常使用

[root@openEuler-RISCV-rare bin]# ./java -version
openjdk version "11.0.10" 2021-01-19
OpenJDK Runtime Environment Bisheng-11.0.10+9-202106011819 (build 11.0.10+9-202106011819)
OpenJDK 64-Bit Server VM Bisheng-11.0.10+9-202106011819 (build 11.0.10+9-202106011819, mixed mode)

将hello world脚本通过ssh方式复制到D1的/root目录下

D:\jean>scp -r ./code/helloworld.java root@192.168.11.27:/root
root@192.168.11.27's password:
helloworld.java                                                                       100%  125    25.2KB/s   00:00

在D1的/root/java/jdk-11.0.10+9/bin目录下，执行hello world脚本，可以成功执行

[root@openEuler-RISCV-rare bin]# ./java /root/helloworld.java
Hello World