StableABI: Difference between revisions
From KVM
No edit summary |
mNo edit summary |
||
| (One intermediate revision by one other user not shown) | |||
| Line 15: | Line 15: | ||
== How to test == | == How to test == | ||
Requirement: At least one guest image installed before executing this case. | |||
1) Edit an existing guests configuration using virsh edit | |||
2) Set the machine attribute to pc e.g. | |||
<os> | |||
<type arch='x86_64' machine='pc'>hvm</type> | |||
3) Check the newly saved configuration using virsh dumpxml | |||
4) Verify the machine attribute is now pc-0.11 e.g. | |||
<os> | |||
<type arch='x86_64' machine='pc-0.11'>hvm</type> | |||
5) Start the guest and verify that it boots correctly as before. | |||
== Potential migration issues == | == Potential migration issues == | ||
== Backward/forward compatibility issues == | == Backward/forward compatibility issues == | ||
Latest revision as of 08:56, 2 December 2010
Stable Guest ABI
Allow guest virtual machines to be presented with the same ABI across QEMU upgrades.
Detailed
Why is it useful?
Changing guest ABI can confuse or break guests.
This is particularly relevant for Windows guests where a guest ABI change may require Windows installs to be reactivated.
How to run
libvirt takes care of it.
How to test
Requirement: At least one guest image installed before executing this case.
1) Edit an existing guests configuration using virsh edit 2) Set the machine attribute to pc e.g.
<os>
<type arch='x86_64' machine='pc'>hvm</type>
3) Check the newly saved configuration using virsh dumpxml 4) Verify the machine attribute is now pc-0.11 e.g.
<os>
<type arch='x86_64' machine='pc-0.11'>hvm</type>
5) Start the guest and verify that it boots correctly as before.
Potential migration issues
Backward/forward compatibility issues
Specific issues with some releases
Test cases
Links
For additional information, see Features/KVM Stable Guest ABI and Features/KVM Stable PCI Addresses on the Fedora Project Wiki.