Red Hat Bugzilla – Bug 586821
Booting from qcow image not works for hvm
Last modified: 2011-01-13 17:21:39 EST
Description of problem:
Xen guest with boot partition in qcow image file fails to boot on each second start.
Version-Release number of selected component (if applicable):
Guest kernel - kernel-2.6.18-194
50% - Fail on each second boot
Steps to Reproduce:
1. Install RHEL 5.4 as xen hvm guest using qcow image
2. Start guest 10x times
Each second start fails - No boot disk error message
No start fail
I found out that this is caused by wrong handling big endian flag. This cause to switch endian on each startup - this cause only one of two starts succeed. Code for handling old images is not correct and need fix. This problem is probably even in upstream - I'm going to try it.
*** Bug 568580 has been marked as a duplicate of this bug. ***
QA verified this bug on xen-3.0.3-115.el5:
1. Create a qcow image without backing file via qcow-create.
2. Create a HVM guest with this qcow image, then install OS on it.
3. The HVM could boot successfully after OS Installation.
Creating a qcow image with backing file(raw format with OS installed), we could also boot a HVM guest with that qcow image.
So change this bug to VERIFIED.
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.