From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:34059) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TFxKB-0007wR-5N for qemu-devel@nongnu.org; Sun, 23 Sep 2012 21:19:04 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1TFxK9-0005Da-2Y for qemu-devel@nongnu.org; Sun, 23 Sep 2012 21:19:03 -0400 Date: Mon, 24 Sep 2012 09:18:38 +0800 From: xuanmao_001 References: <2012090615314646799419@163.com>, Mime-Version: 1.0 Message-ID: <201209240918385316436@163.com> Content-Type: multipart/alternative; boundary="----=_001_NextPart078028125453_=----" Subject: Re: [Qemu-devel] [Qemu-discuss] Qemu snapshot mode Reply-To: xuanmao_001 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Dunrong Huang Cc: qemu-devel , qemu-discuss This is a multi-part message in MIME format. ------=_001_NextPart078028125453_=---- Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: base64 SGksIGFsbA0KSSB3YW50IHRvIGNoYW5nZSB0aGUgcGF0aCBvZiB0ZW1wb3Jhcnkgc25hcHNob3Qg ZmlsZS4gQ2FuIHlvdSBnZWkgbWUgc29tZSBpZGVhcywgb3IgdGVsbCBtZSB3aGljaCBmaWxlIHdp bGwgd3JpdGUgdGhlICB0ZW1wb3Jhcnkgc25hcHNob3QgZmlsZSBpbiBxZW11IHNvdXJjZSBjb2Rl LiB0aGFua3MuDQoNCg0KDQoNCnh1YW5tYW9fMDAxDQoNCkZyb206IER1bnJvbmcgSHVhbmcNCkRh dGU6IDIwMTItMDktMDYgMTg6MDANClRvOiB4dWFubWFvXzAwMQ0KQ0M6IHFlbXUtZGlzY3Vzczsg SmFrb2IgQm9obQ0KU3ViamVjdDogUmU6IFtRZW11LWRpc2N1c3NdIFFlbXUgc25hcHNob3QgbW9k ZQ0KMjAxMi85LzYgeHVhbm1hb18wMDEgPHh1YW5tYW9fMDAxQDE2My5jb20+Og0KPiBIaSwgYWxs LA0KPiBXaGVuIEkgc3RhcnQgVk0gd2l0aCBzbmFwc2hvdCBtb2RlKC0tc25hcHNob3QpLiBJIGRv IHNvbWUgb3BlcmF0aW9ucyxsaWtlDQo+IGNvcHksIGRlbGV0ZSBmaWxlcy4gSSBtdXN0IHNodXRk b3duIFZNLCB0aGUgZGlzayBzdGF0ZSBjYW4gcmV2ZXJ0Lg0KPiBzbyBJIHdhbnQgdG8ga25vdyBp ZiB0aGUgc25hcHNob3QgbW9kZSBjYW4gcmV2ZXJ0IHdoZW4gSSByZWJvb3QgVk0uDQo+DQpObywg aXQgY2FudC4NCkFjdHVhbGx5LCB3aGVuIHlvdSBzdGFydCBRRU1VIHdpdGggLXNuYXBzaG90LCBh IHRlbXBvcmFyeSBzbmFwc2hvdCBmaWxlDQp3aGljaCBpcyBub3QgdmlzaWJsZSB0byB0aGUgdXNl ciB3aWxsIGJlIGNyZWF0ZWQgaW4gL3RtcCwgdGhlIGZpbGUNCndpbGwgZXhpc3QgdXRpbCBRRU1V IGV4aXQuDQpTbyBldmVuIGlmIHlvdSByZWJvb3QgVk0sIFFFTVUgaXMgc3RpbGwgcnVubmluZyBh bmQgdGhlIHRlbXBvcmFyeQ0Kc25hcHNob3QgYWxzbyBleGlzdHMuDQpUaGlzIG1ha2UgeW91IGZh aWxlZCB0byBjb252ZXJ0IFZNIGFmdGVyIHJlYm9vdC4NCj4gVGhhbmtzLg0KPiBfX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fXw0KPiB4dWFubWFvXzAwMQ0KDQoNCg0KLS0gDQpCZXN0IFJl Z2FyZHMsDQoNCkR1bnJvbmcgSHVhbmc= ------=_001_NextPart078028125453_=---- Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Hi, all

I want to change the path of temporary snapshot file. Can y= ou gei=20 me some ideas, or tell me which file will write=20 the temporary snapshot file in qemu source code.=20 thanks.

xuanmao_001

From: Dunrong=20 Huang

Date: 2012-09-06 18:00

To: xuanmao_001

CC: qemu-discu= ss;=20 Jakob Bohm

Subject: Re: [Qemu-discuss] Qemu snapshot=20 mode

2012/9/6 xuanmao_001 <xuanmao_001@163.com>:

> Hi, all,

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

> copy, delete files. I must shutdow= n 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 -sna= pshot, a temporary snapshot file

which is not visible to the user w= ill be created in /tmp, the file

will exist util QEMU exit.

So even if you reboot VM, QEMU is&= nbsp;still running and the temporary

snapshot also exists.

This make you failed to convert VM = ;after reboot.

> Thanks.

> ________________________________

> xuanmao_001

Best Regards,

Dunrong Huang

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