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Diffstat (limited to 'releasenotes')
| -rw-r--r-- | releasenotes/notes/bug-1996995-qemu_monitor_announce_self-add-configurables-2b2f19d238442f72.yaml | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/releasenotes/notes/bug-1996995-qemu_monitor_announce_self-add-configurables-2b2f19d238442f72.yaml b/releasenotes/notes/bug-1996995-qemu_monitor_announce_self-add-configurables-2b2f19d238442f72.yaml new file mode 100644 index 0000000000..0941dd7450 --- /dev/null +++ b/releasenotes/notes/bug-1996995-qemu_monitor_announce_self-add-configurables-2b2f19d238442f72.yaml @@ -0,0 +1,28 @@ +--- +fixes: + - | + Fixes `bug 1996995`_ in which VMs live migrated on certain VXLAN Arista + network fabrics were inaccessible until the switch arp cache expired. + + A Nova workaround option of ``enable_qemu_monitor_announce_self`` was added + to fix `bug 1815989`_ which when enabled would interact with the QEMU + monitor and force a VM to announce itself. + + On certain network fabrics, VMs that are live migrated remain inaccessible + via the network despite the QEMU monitor announce_self command successfully + being called. + + It was noted that on Arista VXLAN fabrics, testing showed that it required + several attempts of running the QEMU announce_self monitor command before + the switch would acknowledge a VM's new location on the fabric. + + This fix introduces two operator configurable options. + The first option sets the number of times the QEMU monitor announce_self + command is called - ``qemu_announce_self_count`` + + The second option allows operators to set the delay between the QEMU + announce_self commands in seconds for subsequent announce_self commands + with ``qemu_announce_self_interval`` + + .. _`bug 1996995`: https://bugs.launchpad.net/nova/+bug/1996995 + .. _`bug 1815989`: https://bugs.launchpad.net/nova/+bug/1815989 |