reply to Michael Tokarev:
Windows qcow2 image will be more easier for reproducing the issue I
reported. And there's a great chance to reproduce it when you do the first try
after rebooting the system.
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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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