qemu-run 设置回环设备失败: 设备或资源忙

turing

1. 
   
2. root@turingkuang:/home/openharmony/code-v3.1.1-Release/OpenHarmony# ./qemu-run
   
3. board: arm_virt
   
4. 
   
5. Enter to start qemu[y/n]:y
   
6. 
   
7. Start making flash.img...
   
8. 记录了1+0 的读入
   
9. 记录了1+0 的写出
   
10. 67108864字节（67 MB，64 MiB）已复制，0.0495233 s，1.4 GB/s
    
11. 记录了2362+1 的读入
    
12. 记录了2362+1 的写出
    
13. 1209604字节（1.2 MB，1.2 MiB）已复制，0.00359915 s，336 MB/s
    
14. 记录了0+1 的读入
    
15. 记录了0+1 的写出
    
16. 89字节已复制，8.4251e-05 s，1.1 MB/s
    
17. 记录了32648+1 的读入
    
18. 记录了32648+1 的写出
    
19. 16715884字节（17 MB，16 MiB）已复制，0.0472882 s，353 MB/s
    
20. 记录了64+1 的读入
    
21. 记录了64+1 的写出
    
22. 33056字节（33 kB，32 KiB）已复制，0.000174462 s，189 MB/s
    
23. Succeed making flash.img.
    
24. 
    
25. 
    
26. Start making out/smallmmc.img...losetup: out/smallmmc.raw：设置回环设备失败: 设备或资源忙
    

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turing

解决losetup: out/smallmmc.raw 方法,
root@turingkuang:/home/openharmony/code-v3.1.1-Release/OpenHarmony/vendor/ohemu/qemu_small_system_demo# vim qemu_run.sh
将对应改成一下样子

1. 
   
2.     # Format.
   
3.     sudo losetup -o 1048576 /dev/loop101 /dev/loop100
   
4.     sudo losetup -o 1074790400 /dev/loop102 /dev/loop100
   
5.     sudo losetup -o 3222274048 /dev/loop103 /dev/loop100
   
6.     sudo mkfs.vfat /dev/loop101 > /dev/null
   
7.     sudo mkfs.vfat /dev/loop102 > /dev/null
   
8.     sudo mkfs.vfat /dev/loop103 > /dev/null
   
9. 
   
10.     # Clean.
    
11.     sudo losetup -d /dev/loop103
    
12.     sudo losetup -d /dev/loop102
    
13.     sudo losetup -d /dev/loop101
    
14.     sudo losetup -d /dev/loop100
    

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turing

1. root@turingkuang:/home/openharmony/code-v3.1.1-Release/OpenHarmony# ./qemu-run
   
2. board: arm_virt
   
3. 
   
4. Enter to start qemu[y/n]:y
   
5. 
   
6. Start making out/smallmmc.img...umount: /mnt: target is busy.
   
7. root@turingkuang:/home/openharmony/code-v3.1.1-Release/OpenHarmony# lsof /mnt/
   
8. lsof: WARNING: can't stat() fuse.gvfsd-fuse file system /run/user/125/gvfs
   
9.       Output information may be incomplete.
   
10. root@turingkuang:/home/openharmony/code-v3.1.1-Release/OpenHarmony# ./qemu-run
    
11. board: arm_virt
    
12. 
    
13. Enter to start qemu[y/n]:y
    
14. Waiting VNC connection on: 5920 ...(Ctrl-C exit)
    
15. qemu-system-arm: -drive if=none,file=./out/smallmmc.img,format=qcow2,id=mmc: Failed to get "write" lock
    
16. Is another process using the image [./out/smallmmc.img]?
    

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turing

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