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Bug 688434

Summary: VM cannot be started when add an IDE disk as a second disk with Readonly
Product: Red Hat Enterprise Linux 6 Reporter: mliu
Component: virt-managerAssignee: Cole Robinson <crobinso>
Status: CLOSED NOTABUG QA Contact: Virtualization Bugs <virt-bugs>
Severity: medium Docs Contact:
Priority: medium    
Version: 6.1CC: dyuan, kxiong, mliu, mzhan
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2011-04-07 19:23:34 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description mliu 2011-03-17 03:00:25 UTC
Description of problem:
When an IDE disk is added as a second disk by Add Hardware, and set as Readonly, the vm machine can not be started. Whenever the first disk is IDE or Virtio disk, this problem always occur.  

Version-Release number of selected component (if applicable):
virt-manager: virt-manager-0.8.6-3.el6
kernel: kernel-2.6.32-120.el6.x86_64
qemu-kvm: qemu-kvm-0.12.1.2-2.150.el6.x86_64
libvirt: libvirt-0.8.7-11.el6.x86_64

How reproducible:
Always

Steps to Reproduce:
1.Shut down a vm then open Virtual Machine Details window.
2.Click Hardware tab then Click Add Hardware, select Storage, Browse the test.img location and IDE Disk item.
3.Check this added IDE disk as Readonly.
4.Click "Apply" button.
5.Run the virtual machine.
  
Actual results:
Get the error message 

Expected results:
vm start successfully

Additional info:

-------------
Error Message
-------------
Error starting domain: internal error Process exited while reading console log output: char device redirected to /dev/pts/1
Using CPU model "cpu64-rhel6"
Using CPU model "cpu64-rhel6"
Using CPU model "cpu64-rhel6"
qemu-kvm: -device ide-drive,bus=ide.0,unit=1,drive=drive-ide0-0-1,id=ide0-0-1: Can't use a read-only drive
qemu-kvm: -device ide-drive,bus=ide.0,unit=1,drive=drive-ide0-0-1,id=ide0-0-1: Device 'ide-drive' could not be initialized

Traceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/asyncjob.py", line 45, in cb_wrapper
    callback(asyncjob, *args, **kwargs)
  File "/usr/share/virt-manager/virtManager/engine.py", line 956, in asyncfunc
    vm.startup()
  File "/usr/share/virt-manager/virtManager/domain.py", line 1048, in startup
    self._backend.create()
  File "/usr/lib64/python2.6/site-packages/libvirt.py", line 330, in create
    if ret == -1: raise libvirtError ('virDomainCreate() failed', dom=self)
libvirtError: internal error Process exited while reading console log output: char device redirected to /dev/pts/1
Using CPU model "cpu64-rhel6"
Using CPU model "cpu64-rhel6"
Using CPU model "cpu64-rhel6"
qemu-kvm: -device ide-drive,bus=ide.0,unit=1,drive=drive-ide0-0-1,id=ide0-0-1: Can't use a read-only drive
qemu-kvm: -device ide-drive,bus=ide.0,unit=1,drive=drive-ide0-0-1,id=ide0-0-1: Device 'ide-drive' could not be initialized

------------
dumpxml info
------------
<emulator>/usr/libexec/qemu-kvm</emulator>
    <disk type='file' device='disk'>
      <driver name='qemu' type='raw' cache='none'/>
      <source file='/var/lib/libvirt/images/rhel6_x86_64_IDE.img'/>
      <target dev='hda' bus='ide'/>
      <address type='drive' controller='0' bus='0' unit='0'/>
    </disk>
    <disk type='file' device='disk'>
      <driver name='qemu' type='raw'/>
      <source file='/var/lib/libvirt/images/test.img'/>
      <target dev='hdb' bus='ide'/>
      <readonly/>
      <address type='drive' controller='0' bus='0' unit='1'/>
    </disk>

Comment 2 RHEL Program Management 2011-04-04 02:01:47 UTC
Since RHEL 6.1 External Beta has begun, and this bug remains
unresolved, it has been rejected as it is not proposed as
exception or blocker.

Red Hat invites you to ask your support representative to
propose this request, if appropriate and relevant, in the
next release of Red Hat Enterprise Linux.

Comment 3 Cole Robinson 2011-04-07 19:23:34 UTC
I don't think the readonly attribute works for IDE devices, so this isn't really expected to work. So I think this is NOTABUG