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Description of problem:
When setting PCI controller's index = bus, define vm failed
I got error like this
# virsh define vm1-test.xml
error: Failed to define domain from vm1-test.xml
error: unsupported configuration: PCI controller at index 2 (0x02) has bus='0x02', but bus must be <= index
PCI controller's index cannot be = bus, so the error message should be updated like this
# virsh define vm1-test.xml
error: Failed to define domain from vm1-test.xml
error: unsupported configuration: PCI controller at index 2 (0x02) has bus='0x02', but bus must be < index
Version-Release number of selected component (if applicable):
libvirt-1.3.4-1.el7.x86_64
How reproducible:
100%
Steps to Reproduce:
1. set pci-bridge controller's index=2, bus=0x02
<controller type='pci' index='0' model='pci-root'>
<alias name='pci.0'/>
</controller>
<controller type='pci' index='1' model='pci-bridge'>
<model name='pci-bridge'/>
<target chassisNr='1'/>
<alias name='pci.1'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x0b' function='0x0'/>
</controller>
<controller type='pci' index='2' model='pci-bridge'>
<address type='pci' domain='0x0000' bus='0x02' slot='0x0c' function='0x0'/>
</controller>
# virsh define vm1-test.xml
error: Failed to define domain from vm1-test.xml
error: unsupported configuration: PCI controller at index 2 (0x02) has bus='0x02', but bus must be <= index
Actual results:
define vm fails when setting pci controller's index=bus
Expected results:
Update error message like this
# virsh define vm1-test.xml
error: Failed to define domain from vm1-test.xml
error: unsupported configuration: PCI controller at index 2 (0x02) has bus='0x02', but bus must be < index
Additional info:
The fix has been merged upstream.
commit c7289cf3b59aacd08dbc9047eda52c03b2837653
Author: Andrea Bolognani <abologna>
Date: Mon May 23 18:00:36 2016 +0200
qemu: Fix error message when PCI bridge has index <= bus
Commit ff2126225df0 changed the error message to be more
detailed about the failure at hand; however, while the new
error message claims that "bus must be <= index", the error
message is displayed if "idx <= addr->bus", ie. when bus
is larger than or *equal to* index.
Change the error message to report the correct constraint,
and format it in a way that mirrors the check exactly to
make it clearer to people reading the code. The new error
message reads "index must be larger than bus".
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1339900
v1.3.4-502-gc7289cf
Verify it on libvirt-2.0.0-5.el7.x86_64
Try to edit a domain's xml to:
# virsh edit smart
...
<controller type='pci' index='0' model='pci-root'/>
<controller type='pci' index='1' model='pci-bridge'>
<model name='pci-bridge'/>
<target chassisNr='1'/>
<alias name='pci.1'/>
<address type='pci' domain='0x0000' bus='0x01' slot='0x0b' function='0x0'/>
</controller>
...
error: unsupported configuration: PCI controller at index 1 (0x01) has bus='0x01', but index must be larger than bus
Failed. Try again? [y,n,i,f,?]:
Try to create a domain with the xml above:
# virsh create /tmp/smart
error: Failed to create domain from /tmp/smart
error: unsupported configuration: PCI controller at index 1 (0x01) has bus='0x01', but index must be larger than bus
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://rhn.redhat.com/errata/RHSA-2016-2577.html
Description of problem: When setting PCI controller's index = bus, define vm failed I got error like this # virsh define vm1-test.xml error: Failed to define domain from vm1-test.xml error: unsupported configuration: PCI controller at index 2 (0x02) has bus='0x02', but bus must be <= index PCI controller's index cannot be = bus, so the error message should be updated like this # virsh define vm1-test.xml error: Failed to define domain from vm1-test.xml error: unsupported configuration: PCI controller at index 2 (0x02) has bus='0x02', but bus must be < index Version-Release number of selected component (if applicable): libvirt-1.3.4-1.el7.x86_64 How reproducible: 100% Steps to Reproduce: 1. set pci-bridge controller's index=2, bus=0x02 <controller type='pci' index='0' model='pci-root'> <alias name='pci.0'/> </controller> <controller type='pci' index='1' model='pci-bridge'> <model name='pci-bridge'/> <target chassisNr='1'/> <alias name='pci.1'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x0b' function='0x0'/> </controller> <controller type='pci' index='2' model='pci-bridge'> <address type='pci' domain='0x0000' bus='0x02' slot='0x0c' function='0x0'/> </controller> # virsh define vm1-test.xml error: Failed to define domain from vm1-test.xml error: unsupported configuration: PCI controller at index 2 (0x02) has bus='0x02', but bus must be <= index Actual results: define vm fails when setting pci controller's index=bus Expected results: Update error message like this # virsh define vm1-test.xml error: Failed to define domain from vm1-test.xml error: unsupported configuration: PCI controller at index 2 (0x02) has bus='0x02', but bus must be < index Additional info: