From: dunfeng zhang <1888467@bugs.launchpad.net>
To: qemu-devel@nongnu.org
Subject: [Bug 1888467] Re: qemu-img http convert bug
Date: Wed, 22 Jul 2020 09:07:53 -0000 [thread overview]
Message-ID: <159540887308.10728.3158207743090910579.malone@gac.canonical.com> (raw)
In-Reply-To: 159540494097.10238.3390638369680947345.malonedeb@gac.canonical.com
first, what I said "file size" is file length as reported by ls
-l?field.comment=first, what I said "file size" is file length as
reported by ls -l.
The following attachment shows the size of the same source file after
different conversion methods，
http -> local: qemu-img convert -f raw -O vdi localfile localfile1
local -> local: qemu-img convert -f raw -O vdi localfile localfile2
localfile1's size is different from localfile2
secondly, the conversion of qcow2 and vmdk is normal.
http -> local: qemu-img convert -f raw -O qcow2 localfile localfile1
local -> local: qemu-img convert -f raw -O qcow2 localfile localfile2
localfile1's size is the same size as localfile2
** Attachment added: "B3DA75B6-00A2-4C4B-B0D2-6F57E92573BD.png"
https://bugs.launchpad.net/qemu/+bug/1888467/+attachment/5394838/+files/B3DA75B6-00A2-4C4B-B0D2-6F57E92573BD.png
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https://bugs.launchpad.net/bugs/1888467
Title:
qemu-img http convert bug
Status in QEMU:
New
Bug description:
Hello, Why the file sizes of http conversion and local conversion are
inconsistent?
Use the http method of qemu-img for conversion. The size of some formats after conversion is different from the local method of qemu-img. Such as vhd, vdi. qcow2 and vmdk are normal。
My image size is 40 G, raw format.
The source is the same file, but the access method is different
http method of qemu-img： qemu-img convert -f raw -O vdi http://xxx xxx.vdi（19G，after conversion）
local method of qemu-img： qemu-img convert -f raw -O vdi xxx.raw xxx.vdi（3G，after conversion）
thank you
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next prev parent reply other threads:[~2020-07-22 9:33 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-22 8:02 [Bug 1888467] [NEW] qemu-img http convert bug dunfeng zhang
2020-07-22 8:38 ` [Bug 1888467] " Max Reitz
2020-07-22 9:07 ` dunfeng zhang [this message]
2020-07-27 14:11 ` Max Reitz
2020-07-28 8:18 ` dunfeng zhang
2020-07-28 14:16 ` Max Reitz
2021-05-07 4:39 ` Thomas Huth
2021-07-07 4:17 ` Launchpad Bug Tracker
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