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[Qemu-devel] [Bug 1002121] Re: disk error when guest boot up via qcow2 i
From: |
Yongjie Ren |
Subject: |
[Qemu-devel] [Bug 1002121] Re: disk error when guest boot up via qcow2 image |
Date: |
Tue, 12 Jun 2012 09:16:51 -0000 |
reply to Jan Kiszka:
I looked at the patch in uq/master branch in qemu-kvm.git as you mentioned.
There's another issue in uq/master branch, so I can't conclude whether your
patch will make a difference.
The issue is Windows(e.g. win7) will get a BSOD with a message "STOP:
ox0000005D".
RAW Windows image or qcow image will have the same BSOD issue.
And Linux guest also has similar issue with uq/master branch.
You can use the following commit in uq/master branch to have a try.
commit: d3d3bef0a (before your patch "i8254: Fix conversion of in-kernel to
userspace state")
latest commit: 0cdd3d14 (already included your pathch)
And, qemu-kvm.git master branch (18b01275) doesn't have the BSOD issue.
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https://bugs.launchpad.net/bugs/1002121
Title:
disk error when guest boot up via qcow2 image
Status in QEMU:
New
Bug description:
Host OS (ia32/ia32e/IA64): ia32e
Guest OS (ia32/ia32e/IA64): ia32e
Guest OS Type (Linux/Windows): Linux(rhel6u1)
kvm.git Commit: 51bfd2998113e1f8ce8dcf853407b76a04b5f2a0
qemu-kvm Commit: e54f008ef8f968cfc2f3ecab78491d180fa31efc
Host Kernel Version:3.4.0-rc7
Hardware: WSM-EP, Romley-EP
Bug detailed description:
--------------------------
If I boot up a guest using qcow2 image, the guest show “disk read error”. If
you press some key to continue, after being automatically repaired, the guest
can boot up.
This should be a qemu-kvm regression.
kvm + qemu-kvm = result
51bfd299 + e54f008e = bad
51bfd299 + b320b8b7 = good
Note:
1. guest rhel6u1, guest show “disk error”
guest rhel6u2, guest show black screen
this phenomenon occurs at the first time to create guest
2. create guest with raw image, this phenomenon doesn’t appear.
Reproduce steps:
----------------
1.start up a host with kvm (commit: 51bfd299) and use qemu-kvm
(commit:e54f008e)
2.qemu-img create –b /share/ia32e_rhel6u1.img –f qcow2
/root/rhel6u1.qcow
3.qemu-system-x86_64 -mem 1024 –hda /root/rhel6u1.qcow
Current result:
----------------
Guest console shows:
error 25:Disk read error
Prss any key to continue...
Expected result:
----------------
Guest boot up correctly
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