From 56710de59d50402c7e84365116b7f16f8a12e388 Mon Sep 17 00:00:00 2001 From: Florian LEDUC Date: Thu, 2 Jan 2020 17:11:32 +0100 Subject: [PATCH] Use iSCSI multipath for libvirt * Multipath daemon allows to reach block devices via multiple paths for better resiliency and performance. Multipathd periodically checks the failed iscsi paths and maintains a list of valid paths. Libvirt can use more than one iSCSI path when option volume_use_multipath is set and when multipathd enabled. Change-Id: I54629656803c4989f7673e8c69d2a820609b5960 Implements: blueprint nova-libvirt-multipath-iscsi --- ansible/roles/nova-cell/templates/nova.conf.d/libvirt.conf.j2 | 3 +++ .../notes/nova-libvirt-multipath-iscsi-eb961e44e6fec9ff.yaml | 4 ++++ 2 files changed, 7 insertions(+) create mode 100644 releasenotes/notes/nova-libvirt-multipath-iscsi-eb961e44e6fec9ff.yaml diff --git a/ansible/roles/nova-cell/templates/nova.conf.d/libvirt.conf.j2 b/ansible/roles/nova-cell/templates/nova.conf.d/libvirt.conf.j2 index 10dda3fa4e..69d8f9363b 100644 --- a/ansible/roles/nova-cell/templates/nova.conf.d/libvirt.conf.j2 +++ b/ansible/roles/nova-cell/templates/nova.conf.d/libvirt.conf.j2 @@ -24,3 +24,6 @@ virt_type = {{ nova_compute_virt_type }} {% if nova_libvirt_cpu_mode %} cpu_mode = {{ nova_libvirt_cpu_mode }} {% endif %} +{% if enable_multipathd | bool %} +volume_use_multipath = True +{% endif %} diff --git a/releasenotes/notes/nova-libvirt-multipath-iscsi-eb961e44e6fec9ff.yaml b/releasenotes/notes/nova-libvirt-multipath-iscsi-eb961e44e6fec9ff.yaml new file mode 100644 index 0000000000..bf28a2d1f2 --- /dev/null +++ b/releasenotes/notes/nova-libvirt-multipath-iscsi-eb961e44e6fec9ff.yaml @@ -0,0 +1,4 @@ +--- +upgrade: + - | + Enabling multipathd will now configure Nova to use it.