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Date: Wed, 11 Sep 2013 16:50:02 +0800
From: xuanmao_001 <xuanmao_001@163.com>
References: <2013091115145240614211@163.com>,
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Subject: Re: [Qemu-devel] qemu-img convert will increase the VM image
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sp;&nbsp;&nbsp;&nbsp;allocated&nbsp;at&nbsp;offset&nbsp;1&nbsp;MiB&nbsp;(1=
)</DIV>
<DIV>&nbsp;&nbsp;&nbsp;&nbsp;9&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1507328]&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1792/&nbsp;4093056&nbsp;sectors&nbsp;not&nbsp=
;allocated&nbsp;at&nbsp;offset&nbsp;1&nbsp;MiB&nbsp;(0)</DIV>
<DIV>&nbsp;&nbsp;&nbsp;10&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2424832]&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;128/&nbsp;4091264&nbsp;sectors&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;allocated&nbsp;at&nbsp;offset&nbsp;2&nbsp;MiB&nbsp;(1)</DI=
V>
<DIV>&nbsp;&nbsp;&nbsp;11&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2490368]&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;2560/&nbsp;4091136&nbsp;sectors&nbsp;not&nbsp;allo=
cated&nbsp;at&nbsp;offset&nbsp;2&nbsp;MiB&nbsp;(0)</DIV>
<DIV>&nbsp;&nbsp;&nbsp;12&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3801088]&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;128/&nbsp;4088576&nbsp;sectors&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;allocated&nbsp;at&nbsp;offset&nbsp;4&nbsp;MiB&nbsp;(1)</DI=
V>
<DIV>&nbsp;&nbsp;&nbsp;13&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3866624]&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;512/&nbsp;4088448&nbsp;sectors&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;allocated&nbsp;at&nbsp;offset&nbsp;4&nbsp;MiB&nbsp;(1)</DI=
V>
<DIV>&nbsp;&nbsp;&nbsp;14&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4128768]&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;128/&nbsp;4087936&nbsp;sectors&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;allocated&nbsp;at&nbsp;offset&nbsp;4&nbsp;MiB&nbsp;(1)</DI=
V>
<DIV>&nbsp;&nbsp;&nbsp;15&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4194304]&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;128/&nbsp;4087808&nbsp;sectors&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;allocated&nbsp;at&nbsp;offset&nbsp;4&nbsp;MiB&nbsp;(1)</DI=
V>
<DIV>&nbsp;&nbsp;&nbsp;16&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4259840]&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;128/&nbsp;4087680&nbsp;sectors&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;allocated&nbsp;at&nbsp;offset&nbsp;4&nbsp;MiB&nbsp;(1)</DI=
V>
<DIV>&nbsp;&nbsp;&nbsp;17&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4325376]&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;128/&nbsp;4087552&nbsp;sectors&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;allocated&nbsp;at&nbsp;offset&nbsp;4&nbsp;MiB&nbsp;(1)</DI=
V>
<DIV>&nbsp;&nbsp;&nbsp;18&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4390912]&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;128/&nbsp;4087424&nbsp;sectors&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;allocated&nbsp;at&nbsp;offset&nbsp;4&nbsp;MiB&nbsp;(1)</DI=
V>
<DIV>&nbsp;&nbsp;&nbsp;19&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4456448]&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;128/&nbsp;4087296&nbsp;sectors&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;allocated&nbsp;at&nbsp;offset&nbsp;4&nbsp;MiB&nbsp;(1)</DI=
V>
<DIV>&nbsp;&nbsp;&nbsp;20&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4521984]&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;128/&nbsp;4087168&nbsp;sectors&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;allocated&nbsp;at&nbsp;offset&nbsp;4&nbsp;MiB&nbsp;(1)</DI=
V>
<DIV>&nbsp;&nbsp;&nbsp;21&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4587520]&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;128/&nbsp;4087040&nbsp;sectors&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;allocated&nbsp;at&nbsp;offset&nbsp;4&nbsp;MiB&nbsp;(1)</DI=
V>
<DIV>&nbsp;&nbsp;&nbsp;22&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4653056]&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;128/&nbsp;4086912&nbsp;sectors&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;allocated&nbsp;at&nbsp;offset&nbsp;4&nbsp;MiB&nbsp;(1)</DI=
V>
<DIV>&nbsp;&nbsp;&nbsp;23&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4718592]&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;128/&nbsp;4086784&nbsp;sectors&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;allocated&nbsp;at&nbsp;offset&nbsp;4&nbsp;MiB&nbsp;(1)</DI=
V>
<DIV>&nbsp;&nbsp;&nbsp;24&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4784128]&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;640/&nbsp;4086656&nbsp;sectors&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;allocated&nbsp;at&nbsp;offset&nbsp;5&nbsp;MiB&nbsp;(1)</DI=
V>
<DIV>&nbsp;&nbsp;&nbsp;25&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5111808]&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;128/&nbsp;4086016&nbsp;sectors&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;allocated&nbsp;at&nbsp;offset&nbsp;5&nbsp;MiB&nbsp;(1)</DI=
V>
<DIV>&nbsp;&nbsp;&nbsp;26&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5177344]&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;128/&nbsp;4085888&nbsp;sectors&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;allocated&nbsp;at&nbsp;offset&nbsp;5&nbsp;MiB&nbsp;(1)</DI=
V>
<DIV>&nbsp;&nbsp;&nbsp;27&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5242880]&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;4096/&nbsp;4085760&nbsp;sectors&nbsp;not&nbsp;allo=
cated&nbsp;at&nbsp;offset&nbsp;5&nbsp;MiB&nbsp;(0)</DIV>
<DIV>&nbsp;&nbsp;&nbsp;28&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7340032]&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;128/&nbsp;4081664&nbsp;sectors&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;allocated&nbsp;at&nbsp;offset&nbsp;7&nbsp;MiB&nbsp;(1)</DI=
V>
<DIV>&nbsp;&nbsp;&nbsp;29&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7405568]&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;128/&nbsp;4081536&nbsp;sectors&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;allocated&nbsp;at&nbsp;offset&nbsp;7&nbsp;MiB&nbsp;(1)</DI=
V>
<DIV>&nbsp;&nbsp;&nbsp;30&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7471104]&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;128/&nbsp;4081408&nbsp;sectors&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;allocated&nbsp;at&nbsp;offset&nbsp;7&nbsp;MiB&nbsp;(1)</DI=
V>
<DIV>&nbsp;</DIV>
<DIV>&nbsp;</DIV>
<DIV>the first 30lines&nbsp;output from&nbsp;modify image:</DIV>
<DIV>
<DIV>&nbsp;=20
1&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0]=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;128/&nbsp;4096000&nbsp;sectors&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;allocated&nbsp;at&nbsp;offset&nbsp;0.000000&nbsp;byt=
es&nbsp;(1)</DIV>
<DIV>&nbsp;&nbsp;2&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;65536]&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;1920/&nbsp;4095872&nbsp;sectors&nbsp;not&nbsp;a=
llocated&nbsp;at&nbsp;offset&nbsp;64&nbsp;KiB&nbsp;(0)</DIV>
<DIV>&nbsp;&nbsp;3&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1048576]&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;512/&nbsp;4093952&nbsp;sectors&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;allocated&nbsp;at&nbsp;offset&nbsp;1&nbsp;MiB&nbsp;(1)</DIV>
<DIV>&nbsp;&nbsp;4&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1310720]&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;256/&nbsp;4093440&nbsp;sectors&nbsp;not&nbsp;alloca=
ted&nbsp;at&nbsp;offset&nbsp;1&nbsp;MiB&nbsp;(0)</DIV>
<DIV>&nbsp;&nbsp;5&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1441792]&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;128/&nbsp;4093184&nbsp;sectors&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;allocated&nbsp;at&nbsp;offset&nbsp;1&nbsp;MiB&nbsp;(1)</DIV>
<DIV>&nbsp;&nbsp;6&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1507328]&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;1792/&nbsp;4093056&nbsp;sectors&nbsp;not&nbsp;allocated&n=
bsp;at&nbsp;offset&nbsp;1&nbsp;MiB&nbsp;(0)</DIV>
<DIV>&nbsp;&nbsp;7&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2424832]&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;128/&nbsp;4091264&nbsp;sectors&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;allocated&nbsp;at&nbsp;offset&nbsp;2&nbsp;MiB&nbsp;(1)</DIV>
<DIV>&nbsp;&nbsp;8&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2490368]&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;2560/&nbsp;4091136&nbsp;sectors&nbsp;not&nbsp;allocated&n=
bsp;at&nbsp;offset&nbsp;2&nbsp;MiB&nbsp;(0)</DIV>
<DIV>&nbsp;&nbsp;9&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3801088]&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;2816/&nbsp;4088576&nbsp;sectors&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;allocated&nbsp;at&nbsp;offset&nbsp;4&nbsp;MiB&nbsp;(1)</DIV>
<DIV>&nbsp;10&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5242880]&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;4096/&nbsp;4085760&nbsp;sectors&nbsp;not&nbsp;allocated&nbsp;a=
t&nbsp;offset&nbsp;5&nbsp;MiB&nbsp;(0)</DIV>
<DIV>&nbsp;11&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7340032]&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;4224/&nbsp;4081664&nbsp;sectors&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a=
llocated&nbsp;at&nbsp;offset&nbsp;7&nbsp;MiB&nbsp;(1)</DIV>
<DIV>&nbsp;12&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9502720]&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;128/&nbsp;4077440&nbsp;sectors&nbsp;not&nbsp;allocated&n=
bsp;at&nbsp;offset&nbsp;9&nbsp;MiB&nbsp;(0)</DIV>
<DIV>&nbsp;13&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9568256]&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;896/&nbsp;4077312&nbsp;sectors&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;allocated&nbsp;at&nbsp;offset&nbsp;9&nbsp;MiB&nbsp;(1)</DIV>
<DIV>&nbsp;14&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10027008]&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;896/&nbsp;4076416&nbsp;sectors&nbsp;not&nbsp;allocated&nbsp;a=
t&nbsp;offset&nbsp;10&nbsp;MiB&nbsp;(0)</DIV>
<DIV>&nbsp;15&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10485760]&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;8320/&nbsp;4075520&nbsp;sectors&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;alloca=
ted&nbsp;at&nbsp;offset&nbsp;10&nbsp;MiB&nbsp;(1)</DIV>
<DIV>&nbsp;16&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14745600]&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;1920/&nbsp;4067200&nbsp;sectors&nbsp;not&nbsp;allocated&nbsp;at&nbs=
p;offset&nbsp;14&nbsp;MiB&nbsp;(0)</DIV>
<DIV>&nbsp;17&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15728640]&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;4480/&nbsp;4065280&nbsp;sectors&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;alloca=
ted&nbsp;at&nbsp;offset&nbsp;15&nbsp;MiB&nbsp;(1)</DIV>
<DIV>&nbsp;18&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18022400]&nbsp;&nbsp;&nbsp;&nbsp=
;16000/&nbsp;4060800&nbsp;sectors&nbsp;not&nbsp;allocated&nbsp;at&nbsp;off=
set&nbsp;17&nbsp;MiB&nbsp;(0)</DIV>
<DIV>&nbsp;19&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;26214400]&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;128/&nbsp;4044800&nbsp;sectors&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a=
llocated&nbsp;at&nbsp;offset&nbsp;25&nbsp;MiB&nbsp;(1)</DIV>
<DIV>&nbsp;20&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;26279936]&nbsp;&nbsp;&nbsp;&nbsp=
;12160/&nbsp;4044672&nbsp;sectors&nbsp;not&nbsp;allocated&nbsp;at&nbsp;off=
set&nbsp;25&nbsp;MiB&nbsp;(0)</DIV>
<DIV>&nbsp;21&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;32505856]&nbsp;&nbsp;&nbsp;&nbsp=
;12416/&nbsp;4032512&nbsp;sectors&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;allocated&n=
bsp;at&nbsp;offset&nbsp;31&nbsp;MiB&nbsp;(1)</DIV>
<DIV>&nbsp;22&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38862848]&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;3840/&nbsp;4020096&nbsp;sectors&nbsp;not&nbsp;allocated&nbsp;at&nbs=
p;offset&nbsp;37&nbsp;MiB&nbsp;(0)</DIV>
<DIV>&nbsp;23&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;40828928]&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;1280/&nbsp;4016256&nbsp;sectors&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;alloca=
ted&nbsp;at&nbsp;offset&nbsp;39&nbsp;MiB&nbsp;(1)</DIV>
<DIV>&nbsp;24&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;41484288]&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;384/&nbsp;4014976&nbsp;sectors&nbsp;not&nbsp;allocated&nbsp;a=
t&nbsp;offset&nbsp;40&nbsp;MiB&nbsp;(0)</DIV>
<DIV>&nbsp;25&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;41680896]&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;128/&nbsp;4014592&nbsp;sectors&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a=
llocated&nbsp;at&nbsp;offset&nbsp;40&nbsp;MiB&nbsp;(1)</DIV>
<DIV>&nbsp;26&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;41746432]&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;7040/&nbsp;4014464&nbsp;sectors&nbsp;not&nbsp;allocated&nbsp;at&nbs=
p;offset&nbsp;40&nbsp;MiB&nbsp;(0)</DIV>
<DIV>&nbsp;27&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;45350912]&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;640/&nbsp;4007424&nbsp;sectors&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a=
llocated&nbsp;at&nbsp;offset&nbsp;43&nbsp;MiB&nbsp;(1)</DIV>
<DIV>&nbsp;28&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;45678592]&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;7040/&nbsp;4006784&nbsp;sectors&nbsp;not&nbsp;allocated&nbsp;at&nbs=
p;offset&nbsp;44&nbsp;MiB&nbsp;(0)</DIV>
<DIV>&nbsp;29&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;49283072]&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;128/&nbsp;3999744&nbsp;sectors&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a=
llocated&nbsp;at&nbsp;offset&nbsp;47&nbsp;MiB&nbsp;(1)</DIV>
<DIV>&nbsp;30&nbsp;[&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;49348608]&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;384/&nbsp;3999616&nbsp;sectors&nbsp;not&nbsp;allocated&nbsp;a=
t&nbsp;offset&nbsp;47&nbsp;MiB&nbsp;(0)</DIV></DIV></DIV>
<DIV>&nbsp;</DIV>
<DIV>they are different. </DIV>
<DIV>what caused the problem ?</DIV>
<HR style=3D"WIDTH: 210px; HEIGHT: 1px" align=3Dleft color=3D#b5c4df SIZE=
=3D1>

<DIV><SPAN>xuanmao_001</SPAN></DIV>
<DIV>&nbsp;</DIV>
<DIV=20
style=3D"BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOT=
TOM: 0cm; PADDING-LEFT: 0cm; PADDING-RIGHT: 0cm; BORDER-TOP: #b5c4df 1pt s=
olid; BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<DIV=20
style=3D"PADDING-BOTTOM: 8px; PADDING-LEFT: 8px; PADDING-RIGHT: 8px; BACKG=
ROUND: #efefef; COLOR: #000000; FONT-SIZE: 12px; PADDING-TOP: 8px">
<DIV><B>From:</B>&nbsp;<A href=3D"mailto:kwolf@redhat.com">Kevin Wolf</A><=
/DIV>
<DIV><B>Date:</B>&nbsp;2013-09-11&nbsp;16:28</DIV>
<DIV><B>To:</B>&nbsp;<A href=3D"mailto:xuanmao_001@163.com">xuanmao_001</A=
></DIV>
<DIV><B>CC:</B>&nbsp;<A href=3D"mailto:qemu-devel@nongnu.org">qemu-devel</=
A>; <A=20
href=3D"mailto:qemu-discuss@nongnu.org">qemu-discuss</A></DIV>
<DIV><B>Subject:</B>&nbsp;Re: qemu-img convert will increase the VM=20
image</DIV></DIV></DIV>
<DIV>
<DIV>Am&nbsp;11.09.2013&nbsp;um&nbsp;09:14&nbsp;hat&nbsp;xuanmao_001&nbsp;=
geschrieben:</DIV>
<DIV>&gt;&nbsp;Hi,&nbsp;all:</DIV>
<DIV>&gt;&nbsp;&nbsp;</DIV>
<DIV>&gt;&nbsp;I&nbsp;have&nbsp;question&nbsp;about&nbsp;qemu-img&nbsp;con=
vert&nbsp;...</DIV>
<DIV>&gt;&nbsp;&nbsp;</DIV>
<DIV>&gt;&nbsp;I&nbsp;have&nbsp;a&nbsp;orignal&nbsp;image&nbsp;with&nbsp;f=
ollowing&nbsp;information:</DIV>
<DIV>&gt;&nbsp;#&nbsp;qemu-img&nbsp;info&nbsp;ori.qcow2&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;</DIV>
<DIV>&gt;&nbsp;image:&nbsp;ori.qcow2</DIV>
<DIV>&gt;&nbsp;file&nbsp;format:&nbsp;qcow2</DIV>
<DIV>&gt;&nbsp;virtual&nbsp;size:&nbsp;2.0G&nbsp;(2097152000&nbsp;bytes)</=
DIV>
<DIV>&gt;&nbsp;disk&nbsp;size:&nbsp;308M</DIV>
<DIV>&gt;&nbsp;cluster_size:&nbsp;65536</DIV>
<DIV>&gt;&nbsp;&nbsp;</DIV>
<DIV>&gt;&nbsp;when&nbsp;I&nbsp;executed&nbsp;with&nbsp;"qemu-img&nbsp;con=
vert&nbsp;-f&nbsp;qcow2&nbsp;-O&nbsp;qcow2&nbsp;ori.qcow2&nbsp;new.qcow2"<=
/DIV>
<DIV>&gt;&nbsp;the&nbsp;new.qcow2&nbsp;like&nbsp;following:</DIV>
<DIV>&gt;&nbsp;#&nbsp;qemu-img&nbsp;info&nbsp;new.qcow2&nbsp;</DIV>
<DIV>&gt;&nbsp;image:&nbsp;new.qcow2</DIV>
<DIV>&gt;&nbsp;file&nbsp;format:&nbsp;qcow2</DIV>
<DIV>&gt;&nbsp;virtual&nbsp;size:&nbsp;2.0G&nbsp;(2097152000&nbsp;bytes)</=
DIV>
<DIV>&gt;&nbsp;disk&nbsp;size:&nbsp;748M</DIV>
<DIV>&gt;&nbsp;cluster_size:&nbsp;65536</DIV>
<DIV>&gt;&nbsp;&nbsp;</DIV>
<DIV>&gt;&nbsp;so,&nbsp;my&nbsp;question&nbsp;is&nbsp;why&nbsp;the&nbsp;im=
age&nbsp;size&nbsp;increased&nbsp;after&nbsp;my&nbsp;operation?</DIV>
<DIV>&nbsp;</DIV>
<DIV>You&nbsp;can&nbsp;try&nbsp;comparing&nbsp;the&nbsp;output&nbsp;of&nbs=
p;the&nbsp;qemu-io&nbsp;'map'&nbsp;command&nbsp;for&nbsp;both</DIV>
<DIV>images.</DIV>
<DIV>&nbsp;</DIV>
<DIV>Kevin</DIV></DIV></BODY></HTML>

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