QEMU built-in RAM block device

[Валентин]

Hello and thank you for QEMU! 

Could someone point me to right direction, is there a RAM block device in QEMU? 

 

I'd like to create temporary RAM drive – without formatting or anything, just simply mount piece of memory as HDD, similarly to raw img files. 

So that guest would see it as normal physical disk. 

 

I tried: 

-object memory-backend-ram,size=32M,id=m0 -device ide-hd,drive=m0 

But it obviously does not work. 

 

It could be useful for users without root privileges who are not able to mount system-wide RAM disk and put Qcow image there. 

 

Thanks in advance, 

Valentine.