Re: [libvirt] [Xen-devel] [PATCH 0/3] libxl: domain destroy fixes

This small series of patches fixes some issues wrt domain destroy in the libxl driver. The primary motivation for this work is to prevent locking the virDomainObj during long running destroy operations on large memory domains. Patch 1 moves job acquisition from libxlDomainStart to it's callers so they have more control over when the job is acquired. Patch 2 fixes a few spots where we never acquired a job during domain destroy. Patch 3 contains the interesting change, where the virDomainObj is unlocked during the long-running destroy operation. This series wraps up my work to improve parallel OpenStack Tempest runs against the libxl driver. With libvirt.git master + this series + a patched libxl [1], I've successfully run a reproducer that was hitting the same issues encountered by Tempest. [1] libxl commits from xen.git: 93699882d, f1335f0d, 4783c99a, 1c91d6fba, and 188e9c54. I'll contact the stable branch maintainers and ask them to include these commits in the next Xen 4.4.x and 4.5.x releases.