Xen: use utils.WriteFile for the instance configs
Also raise HypervisorError rather than OpExecError.
Reviewed-by: iustinp
Xen: use utils.Readfile to read the VNC password
KVM and Xen: add the HV_ROOT_PATH parameter
This parameter allows a different path to be passed to the instancekernel. The new parameter is mandatory, and by default has the value ofthe old hardcoded value for both kvm and xen.
Beta1 clusters will need to have this parameter added for their...
KVM: implement GetShellCommandForConsole
This is a class method, because it calls _InstanceSerial, which isanother class method. The patch changes it to classmethod for all thehypervisor classes.
KVM: classify _Instance{Monitor,Serial,KVMRuntime}
Those methods need nothing from the instantiated class, and justmanipulate strings, and fetch some class global variables, so they canbe classmethods.
Xen and KVM: correct a typo when checking args
A missing 'be' was present in the error string for both xen and kvm,when the kernel or initrd path was not absolute.
Reviewed-by: imsnah
KVM live migration: handle failure
If the KVM live migration ends up in a 'failed' state it has beenaborted at the kvm level, and the machine is still running locally.We support also the 'cancelled' state even though there should be no wayof reaching it, without manual intervention....
KVM: change a few IOError with EnvironmentError
KVM: instance migration
The tcp port used for migrating KVM instances is selectable at./configure time. We use a single port as nodes are locked anyway duringa migration, so no two migrations can happen at the same time to thesame node.
KVM: add the _InstancePidAlive function
Throughout the kvm code we very often look for the instance pidfilename, read it, and check if the process is alive. Abstract this into aprivate function and use that one instead.
This patch also changes RebootInstance to check whether the instance is...
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