Re: [Qemu-devel] [Qemu-discuss] Qemu snapshot mode

[xuanmao_001]

Hi, all

I want to change the path of temporary snapshot file. Can you gei me some ideas, or tell me which file will write the  temporary snapshot file in qemu source code. thanks.

 

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xuanmao_001

 

From: Dunrong Huang

Date: 2012-09-06 18:00

To: xuanmao_001

CC: qemu-discuss; Jakob Bohm

Subject: Re: [Qemu-discuss] Qemu snapshot mode

2012/9/6 xuanmao_001 <address@hidden>:

> Hi, all,

> When I start VM with snapshot mode(--snapshot). I do some operations,like

> copy, delete files. I must shutdown VM, the disk state can revert.

> so I want to know if the snapshot mode can revert when I reboot VM.

>

No, it cant.

Actually, when you start QEMU with -snapshot, a temporary snapshot file

which is not visible to the user will be created in /tmp, the file

will exist util QEMU exit.

So even if you reboot VM, QEMU is still running and the temporary

snapshot also exists.

This make you failed to convert VM after reboot.

> Thanks.

> ________________________________

> xuanmao_001

 

 

 

-- 

Best Regards,

 

Dunrong Huang