Jetson NX设置nvme固态硬盘为系统盘

一、参考资料

rootOnNVMe
How to Boot from NVMe SSD?
仅两步，把JETSON XAVIER NX的系统移动到nvme硬盘上
NVIDIA JETSON XAVIER NX （二）设置M.2 Key M SSD为系统盘

二、总体步骤

2.1 安装nvme固态硬盘

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2.2 Jetson NX刷机

参考Jeson TX2刷机教程：Jetson TX2刷机教程

连接USB，连接跳线（连接第二、第三个位置），Host上位机打开 SDKManager，安装 Jetson OS；

连接USB
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连接跳线（连接第二、第三个位置）
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安装 Jetson OS
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2.3 拔掉跳线，重启NX（可进入Ubuntu系统）

2.4 设置nvme为系统盘

关键步骤，请见下文。

2.5 安装 Jetson SDK Components

Host上位机打开 SDKManager，安装 Jetson SDK Components；
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三、关键步骤

3.1 设置硬盘格式

# 进入parted
sudo parted /dev/nvme0n1#将磁盘设置为gpt格式
mklabel gpt #将磁盘所有的容量设置为GPT格式
mkpart logical 0 -1 #查看分区结果
print # 退出parted
quit

xjzk@ubuntu:/$ sudo parted /dev/nvme0n1
GNU Parted 3.2
Using /dev/nvme0n1
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) mklabel gpt
Warning: The existing disk label on /dev/nvme0n1 will be destroyed and all data
on this disk will be lost. Do you want to continue?
Yes/No? Yes
(parted) mkpart logical 0 -1
Warning: The resulting partition is not properly aligned for best performance.
Ignore/Cancel? Ignore
(parted) print
Model: aigo NVMe SSD P2000 128GB (nvme)
Disk /dev/nvme0n1: 128GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:Number  Start   End    Size   File system  Name     Flags1      17.4kB  128GB  128GB               logical(parted) quit
Information: You may need to update /etc/fstab.

3.2 查看分区

#查看分区
df -l
df -a
lsblk

3.3 创建分区

# 进入硬盘
sudo fdisk /dev/nvme0n1# 查看帮助
Command (m for help): m# 添加分区
Command (m for help): n# 添加拓展分区
Select (default p): e# 分区编号，Enter回车默认
Partition number (1-4, default 1):# 分区首地址，Enter回车默认
First sector (2048-250069679, default 2048):# 分区尾地址，Enter回车默认
Last sector, +sectors or +size{K,M,G,T,P} (2048-250069679, default 250069679):# 打印分区
Command (m for help): p# 保存修改
Command (m for help): w

xjzk@ubuntu:~$ sudo fdisk /dev/nvme0n1Welcome to fdisk (util-linux 2.31.1).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.Command (m for help): n
Partition typep   primary (0 primary, 0 extended, 4 free)e   extended (container for logical partitions)
Select (default p): e
Partition number (1-4, default 1):
First sector (2048-250069679, default 2048):
Last sector, +sectors or +size{K,M,G,T,P} (2048-250069679, default 250069679):Created a new partition 1 of type 'Extended' and of size 119.2 GiB.Command (m for help): p
Disk /dev/nvme0n1: 119.2 GiB, 128035676160 bytes, 250069680 sectors
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: dos
Disk identifier: 0x09833de0Device         Boot Start       End   Sectors   Size Id Type
/dev/nvme0n1p1       2048 250069679 250067632 119.2G  5 ExtendedCommand (m for help): w
The partition table has been altered.
Calling ioctl() to re-read partition table.
Syncing disks.

3.4 格式化分区

sudo mke2fs -t ext4  /dev/nvme0n1p1 #格式化分区

xjzk@ubuntu:/$ sudo mke2fs -t ext4 /dev/nvme0n1p1
[sudo] password for xjzk:
mke2fs 1.44.1 (24-Mar-2018)
Discarding device blocks: done
Creating filesystem with 31258461 4k blocks and 7815168 inodes
Filesystem UUID: 83a62e34-6619-4ef4-b44f-5734f0af8b3f
Superblock backups stored on blocks:32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,4096000, 7962624, 11239424, 20480000, 23887872Allocating group tables: done
Writing inode tables: done
Creating journal (131072 blocks): done
Writing superblocks and filesystem accounting information: done

3.5 拷贝rootfs

将eMMC / SD卡的rootfs复制到SSD。

# 进入目录
cd rootOnNVMe #执行复制脚本
./copy-rootfs-ssd.sh

xjzk@ubuntu:~/Desktop$ cd rootOnNVMe/
xjzk@ubuntu:~/Desktop/rootOnNVMe$ ./copy-rootfs-ssd.sh5,092,410,373  90%   56.35MB/s    0:01:26 (xfr#109670, to-chk=0/166927)

3.6 设置rootfs

安装启动脚本：将rootfs设置为NVME。

# 将rootfs设置为NVME
./setup-service.sh #重启
sudo reboot

xjzk@ubuntu:~/Desktop/rootOnNVMe$ ./setup-service.sh
[sudo] password for xjzk:
==== AUTHENTICATING FOR org.freedesktop.systemd1.reload-daemon ===
Authentication is required to reload the systemd state.
Authenticating as: xjzk,,, (xjzk)
Password:
==== AUTHENTICATION COMPLETE ===
Created symlink /etc/systemd/system/default.target.wants/setssdroot.service → /etc/systemd/system/setssdroot.service.
Service to set the rootfs to the SSD installed.
Make sure that you have copied the rootfs to SSD.
Reboot for changes to take effect.

3.7 查看是否成功

查看硬盘挂载点，/dev/nvme0n1p1 成功挂载到 / 挂载点上。

xjzk@ubuntu:~$ df -l
Filesystem     1K-blocks     Used Available Use% Mounted on
none             3591204        0   3591204   0% /dev
tmpfs            3975892       40   3975852   1% /dev/shm
tmpfs            3975892    30388   3945504   1% /run
tmpfs               5120        4      5116   1% /run/lock
tmpfs            3975892        0   3975892   0% /sys/fs/cgroup
/dev/nvme0n1p1 122547172 14721792 101557304  13% /
tmpfs             795176       12    795164   1% /run/user/120
tmpfs             795176      140    795036   1% /run/user/1000
/dev/mmcblk0p1  14318640  5353472   8214784  40% /media/xjzk/d6876fc2-e036-47bb-b2f6-bfe96b226e2a