Description of problem: If multiple VM jobs which specifies the same VM image file are executed, they are executed at the same time. Concurrent access to the same image file from multiple kvm processes is really problematic. Only recently libvirt provided a solution to lock the VM image, see: http://fedoraproject.org/wiki/Features/VirtLockManager http://libvirt.org/locking.html But this can be solved at vm-gahp level. Version-Release number of selected component (if applicable): condor-7.6.5-0.14 condor-vm-gahp-7.6.5-0.14 Reproduced with RHEL6/x86_64 KVM. Please note that, when Xen is used (RHEL5 only), the hypervisor itself recognize that the image is already in use and returns an error, so that the job is moved to Hold state.
MRG-Grid is in maintenance and only customer escalations will be considered. This issue can be reopened if a customer escalation associated with it occurs.