From 4e54382989138155100a5cae90d70ca162dab703 Mon Sep 17 00:00:00 2001 From: Michael Polenchuk Date: Fri, 16 Feb 2018 13:20:41 +0400 Subject: Set nova disk cachemodes to file directsync Set nova/libvirt disk cache modes to file directsync to bypass the host page cache & prevent instance's kernel panic due to absent /dev partition. Caching mode directsync effectively turns all guest I/O operations into direct I/O operations on the host, which is the NFS client (virtuals) or GlusterFS (baremetals). Also return back to hwe kernel as a golden mean between GA & Edge ones. Change-Id: I51ab7d0ee71c214ff16b756cfee16e918738b6fd Signed-off-by: Michael Polenchuk --- mcp/reclass/classes/cluster/mcp-pike-common-ha/openstack_compute.yml | 3 +++ 1 file changed, 3 insertions(+) (limited to 'mcp/reclass/classes/cluster/mcp-pike-common-ha/openstack_compute.yml') diff --git a/mcp/reclass/classes/cluster/mcp-pike-common-ha/openstack_compute.yml b/mcp/reclass/classes/cluster/mcp-pike-common-ha/openstack_compute.yml index 7f81d7a72..2e79f808e 100644 --- a/mcp/reclass/classes/cluster/mcp-pike-common-ha/openstack_compute.yml +++ b/mcp/reclass/classes/cluster/mcp-pike-common-ha/openstack_compute.yml @@ -56,3 +56,6 @@ parameters: neutron: gateway: vlan_aware_vms: true + nova: + compute: + disk_cachemodes: file=directsync,block=none -- cgit 1.2.3-korg