[libvirt] virsh vol-upload purpose question

[Li, Chun Wen]

I use virsh vol-upload to upload some data in a volume and use 
vol-download to download these data from the same volume, both these two 
commands work well. However, when I first use these two commands, I 
thought I can use vol-upload to upload some file, then attach this 
volume to a vm, and  access the upload file in this vm. I did this 
experiment, bud it not success. Once I upload a file into a volume, 
attach it to a vm, then the vm can not recognize the file type of this 
vm, if I mkfs to the volume, the file I upload disappear.

So, my question is the purpose of the vol-upload is just to save some 
data in the volume outside vm? I think it is more reasonable if  we can 
access upload data from vm.


Best Regards
Kimi Li