From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:37877) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VJee8-00024X-8w for qemu-devel@nongnu.org; Wed, 11 Sep 2013 03:15:35 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1VJee0-0000Rc-V0 for qemu-devel@nongnu.org; Wed, 11 Sep 2013 03:15:28 -0400 Date: Wed, 11 Sep 2013 15:14:52 +0800 From: xuanmao_001 Mime-Version: 1.0 Message-ID: <2013091115145240614211@163.com> Content-Type: multipart/alternative; boundary="----=_001_NextPart468024127060_=----" Subject: [Qemu-devel] qemu-img convert will increase the VM image Reply-To: xuanmao_001 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel , qemu-discuss Cc: Kevin Wolf This is a multi-part message in MIME format. ------=_001_NextPart468024127060_=---- Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: base64 SGksIGFsbDoNCg0KSSBoYXZlIHF1ZXN0aW9uIGFib3V0IHFlbXUtaW1nIGNvbnZlcnQgLi4uDQoN CkkgaGF2ZSBhIG9yaWduYWwgaW1hZ2Ugd2l0aCBmb2xsb3dpbmcgaW5mb3JtYXRpb246DQojIHFl bXUtaW1nIGluZm8gb3JpLnFjb3cyICAgICAgIA0KaW1hZ2U6IG9yaS5xY293Mg0KZmlsZSBmb3Jt YXQ6IHFjb3cyDQp2aXJ0dWFsIHNpemU6IDIuMEcgKDIwOTcxNTIwMDAgYnl0ZXMpDQpkaXNrIHNp emU6IDMwOE0NCmNsdXN0ZXJfc2l6ZTogNjU1MzYNCg0Kd2hlbiBJIGV4ZWN1dGVkIHdpdGggInFl bXUtaW1nIGNvbnZlcnQgLWYgcWNvdzIgLU8gcWNvdzIgb3JpLnFjb3cyIG5ldy5xY293MiINCnRo ZSBuZXcucWNvdzIgbGlrZSBmb2xsb3dpbmc6DQojIHFlbXUtaW1nIGluZm8gbmV3LnFjb3cyIA0K aW1hZ2U6IG5ldy5xY293Mg0KZmlsZSBmb3JtYXQ6IHFjb3cyDQp2aXJ0dWFsIHNpemU6IDIuMEcg KDIwOTcxNTIwMDAgYnl0ZXMpDQpkaXNrIHNpemU6IDc0OE0NCmNsdXN0ZXJfc2l6ZTogNjU1MzYN Cg0Kc28sIG15IHF1ZXN0aW9uIGlzIHdoeSB0aGUgaW1hZ2Ugc2l6ZSBpbmNyZWFzZWQgYWZ0ZXIg bXkgb3BlcmF0aW9uPw0KDQp0aGFua3MuDQoNCg0KDQoNCnh1YW5tYW9fMDAx ------=_001_NextPart468024127060_=---- Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable
Hi, all:
 
I have question about qemu-img convert ...
 
I have a orignal image with following information:
#=20 qemu-img info ori.qcow2       = ;
image: ori.qcow2
file format: qcow2
virtual size: 2.0G (2097152000 bytes)
disk size: 308M
cluster_size: 65536
 
when I executed with "qemu-img convert -f qcow2 -O qcow2 ori.qcow2=20 new.qcow2"
the new.qcow2 like following:
# qemu-img info new.qcow2 
image: new.qcow2
file format: qcow2
virtual size: 2.0G (2097152000 bytes)
disk size: 748M
cluster_size: 65536
 
so, my question is why the image size increased after my operation?
 
thanks.
 
xuanmao_001
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