Re: [libvirt] [PATCH v2] bhyve: Add support for VNC autoport

From: Alexander Nusov <alexander.nusov(a)nfvexpress.com&gt; This patch adds support for automatic VNC port assignment for bhyve guests. --- Changes from v1: * Call virPortAllocatorRelease() in virBhyveProcessStop() to release VNC port; that's done unconditionally of using autoport * Call virPortAllocatorSetUsed(.., true) in virBhyveProcessReconnect() to reserve already used VNC ports after daemon restart * Call virPortAllocatorSetUsed(.., true) in bhyveBuildGraphicsArgStr() for domains that don't use autoport so allocator didn't try to use ports allocated by these domains * In dryRun mode (i.e. for domxml-to-native) don't allocate any ports * Add a couple of unit tests Note 1: while adding tests I noticed that port allocator will actually skip already bound ports, so I'm wondering if it makes any sense to use virPortAllocatorSetUsed(.., true)? Right now I cannot come up with any case to trigger this except probably some races when spawning guests simultaneously, but that's hard to reproduce. Note 2: there are still some cases where resources allocated during command preparation are not properly cleaned up; that's not only VNC ports, but also TAP devices. I plan to add proper cleanup routines separately. src/bhyve/bhyve_command.c | 25 +++++++++++-- src/bhyve/bhyve_driver.c | 5 +++ src/bhyve/bhyve_process.c | 20 +++++++++++ src/bhyve/bhyve_utils.h | 3 ++ .../bhyvexml2argv-vnc-autoport.args | 12 +++++++ .../bhyvexml2argv-vnc-autoport.ldargs | 1 + .../bhyvexml2argv-vnc-autoport.xml | 26 ++++++++++++++ tests/bhyvexml2argvtest.c | 7 ++++ .../bhyvexml2xmlout-vnc-autoport.xml | 41 ++++++++++++++++++++++ tests/bhyvexml2xmltest.c | 1 + 10 files changed, 138 insertions(+), 3 deletions(-) create mode 100644 tests/bhyvexml2argvdata/bhyvexml2argv-vnc-autoport.args create mode 100644 tests/bhyvexml2argvdata/bhyvexml2argv-vnc-autoport.ldargs create mode 100644 tests/bhyvexml2argvdata/bhyvexml2argv-vnc-autoport.xml create mode 100644 tests/bhyvexml2xmloutdata/bhyvexml2xmlout-vnc-autoport.xml