rhtyd opened a new pull request #3405: kvm: fix qemu hook race condition URL: https://github.com/apache/cloudstack/pull/3405 This fixes the qemu hooks `mkdir` race condition which can happen when too many VMs may launch on a KVM host executing the hooks script that tries to `mkdir` for the custom directory. On exception (multiple scripts trying to mkdir), the VM stops. The custom directory need not be created if it does not exist, instead the custom hooks should only execute when there is a custom directory. Feature documentation: http://docs.cloudstack.apache.org/en/4.11.2.0/adminguide/hosts.html#kvm-libvirt-hook-script-include ## Types of changes <!--- What types of changes does your code introduce? Put an `x` in all the boxes that apply: --> - [ ] Breaking change (fix or feature that would cause existing functionality to change) - [ ] New feature (non-breaking change which adds functionality) - [x] Bug fix (non-breaking change which fixes an issue) - [ ] Enhancement (improves an existing feature and functionality) - [ ] Cleanup (Code refactoring and cleanup, that may add test cases)
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