From: Thomas Huth <1759522@bugs.launchpad.net>
To: qemu-devel@nongnu.org
Subject: [Bug 1759522] Re: windows qemu-img create vpc/vhdx error
Date: Wed, 05 May 2021 05:16:03 -0000 [thread overview]
Message-ID: <162019176387.14724.4745907305001563907.malone@soybean.canonical.com> (raw)
In-Reply-To: 152222836105.21062.2375148895134658603.malonedeb@chaenomeles.canonical.com
This is an automated cleanup. This bug report has been moved to QEMU's
new bug tracker on gitlab.com and thus gets marked as 'expired' now.
Please continue with the discussion here:
https://gitlab.com/qemu-project/qemu/-/issues/136
** Changed in: qemu
Status: New => Expired
** Bug watch added: gitlab.com/qemu-project/qemu/-/issues #136
https://gitlab.com/qemu-project/qemu/-/issues/136
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https://bugs.launchpad.net/bugs/1759522
Title:
windows qemu-img create vpc/vhdx error
Status in QEMU:
Expired
Bug description:
On windows, using qemu-img (version 2.11.90) to create vpc/vhdx
virtual disk tends to fail. Here's the way to reproduce:
1. Install qemu-w64-setup-20180321.exe
2. Use `qemu-img create -f vhdx -o subformat=fixed disk.vhdx 512M` to create a vhdx:
Formatting 'disk.vhdx', fmt=vhdx size=536870912 log_size=1048576 block_size=0 subformat=fixed
3. Execute `qemu-img info disk.vhdx` gives the result, (note the `disk size` is incorrect):
image: disk.vhdx
file format: vhdx
virtual size: 512M (536870912 bytes)
disk size: 1.4M
cluster_size: 8388608
4. On Windows 10 (V1709), double click disk.vhdx gives an error:
Make sure the file is in an NTFS volume and isn't in a compressed folder or volume.
Using Disk Management -> Action -> Attach VHD gives an error:
The requested operation could not be completed due to a virtual disk system limitation. Virtual hard disk files must be uncompressed and uneccrypted and must not be sparse.
Comparison with Windows 10 created VHDX:
1. Using Disk Management -> Action -> Create VHD:
File name: win.vhdx
Virtual hard disk size: 512MB
Virtual hard disk format: VHDX
Virtual hard disk type: Fixed size
2. Detach VHDX
3. Execute `qemu-img info win.vhdx` gives the result:
image: win.vhdx
file format: vhdx
virtual size: 512M (536870912 bytes)
disk size: 516M
cluster_size: 33554432
Comparison with qemu-img under Ubuntu:
1. Version: qemu-img version 2.5.0 (Debian 1:2.5+dfsg-5ubuntu10.16),
Copyright (c) 2004-2008 Fabrice Bellard
2. qemu-img create -f vhdx -o subformat=fixed lin.vhdx 512M
Formatting 'lin.vhdx', fmt=vhdx size=536870912 log_size=1048576 block_size=0 subformat=fixed
3. qemu-img info lin.vhdx
image: lin.vhdx
file format: vhdx
virtual size: 512M (536870912 bytes)
disk size: 520M
cluster_size: 8388608
4. Load lin.vhdx under Windows 10 is ok
The same thing happens on `vpc` format with or without
`oformat=fixed`, it seems that windows version of qemu-img has some
incorrect operation? My guess is that windows version of qemu-img
doesn't handle the description field of vpc/vhdx, which leads to an
incorrect `disk size` field.
To manage notifications about this bug go to:
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prev parent reply other threads:[~2021-05-05 5:28 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-28 9:12 [Qemu-devel] [Bug 1759522] [NEW] windows qemu-img create vpc/vhdx error Zixuan Wang
2018-03-28 9:16 ` [Qemu-devel] [Bug 1759522] " Zixuan Wang
2018-03-28 10:27 ` Zixuan Wang
2019-10-27 6:17 ` Adam Baxter
2020-02-10 6:25 ` Qi Zhou
2020-02-19 6:08 ` Zixuan Wang
2020-02-29 0:14 ` maro
2021-04-12 14:59 ` Albert Kao
2021-04-21 6:31 ` Thomas Huth
2021-04-21 11:39 ` Albert Kao
2021-05-05 5:16 ` Thomas Huth [this message]
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