LFS

通过构建LFS，学习交叉编译相关概念，理解Linux系统内部的组成、依赖和运行。

概要

实验环境：VMware，2核，4G内存，20G系统磁盘，20G构建LFS磁盘，Ubunt20.4.3LTS
实验步骤：https://star.us.org/lfs-stable/11.0
实验遇到的问题：

1. VMware，长按shift进grub的控制台，查看磁盘信息以及grub参数

   ls -a
   ls (hd0,1)/
   cat (hd0,1)/boot/grub/grub.cfg

   若是从LFS所在磁盘启动，grub.cfg文件按需调整

   set default=0
   set timeout=5
   
   insmod ext2
   set root=(hd0,1)
   
   menuentry "GNU/Linux, Linux 5.13.12-lfs-11.0" {
           linux   /boot/vmlinuz-5.13.12-lfs-11.0 root=/dev/sdb1 ro
   }

2. VMware，F2进bios调整启动顺序，完成构建后从lfs所在磁盘启动
   

3. VMware，虚机启动LFS报错
   kernel panic -not syncing:VFS:Unable to mount root fs on unknown block(0,0)
   返回chroot，重新编译内核，make menuconfig加选

   → Device Drivers→ SCSI device support
   <*> SCSI disk support
   <*> SCSI generic support
   
   → Device Drivers→ SCSI device support→ SCSI low-level drivers
   -*- LSI MPT Fusion SAS 3.0 & SAS 2.0 Device Driver
   (128) LSI MPT Fusion SAS 2.0 Max number of SG Entries (16 - 256)
   (128) LSI MPT Fusion SAS 3.0 Max number of SG Entries (16 - 256)
   <*> Legacy MPT2SAS config option
   
   → Device Drivers
   [*] Fusion MPT device support —>
   
   → Device Drivers→ Fusion MPT device support
   — Fusion MPT device support
   <*> Fusion MPT ScsiHost drivers for SPI
   <*> Fusion MPT ScsiHost drivers for SAS
   (128) Maximum number of scatter gather entries (16 - 128)
   <*> Fusion MPT misc device (ioctl) driver
   [*] Fusion MPT logging facility 

4. 未修正网卡配置，报错

截图

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ref

• https://star.us.org/lfs-stable/11.0
• https://www.cnblogs.com/share-everything-i-do/archive/2013/02/23/2923705.html