Hi!

Our version of openstack is JUNO and we use CentOS7 like system (RDO)

We have a problem with RAM Allocating, with default settings (1->1.5) libvirt cannot allocate more memory (with CPU all is ok, 1:16 and no problem)

May 29 11:22:53 nova03 systemd: Starting Virtual Machine qemu-instance-000004bc.
May 29 11:22:53 nova03 systemd-machined: New machine qemu-instance-000004bc.
May 29 11:22:53 nova03 systemd: Started Virtual Machine qemu-instance-000004bc.
May 29 11:22:53 nova03 kvm: 33 guests now active
May 29 11:22:53 nova03 kernel: qbrb920d77c-7e: port 2(tapb920d77c-7e) entered disabled state
May 29 11:22:53 nova03 avahi-daemon[1660]: Withdrawing workstation service for tapb920d77c-7e.
May 29 11:22:53 nova03 kernel: device tapb920d77c-7e left promiscuous mode
May 29 11:22:53 nova03 kernel: qbrb920d77c-7e: port 2(tapb920d77c-7e) entered disabled state
May 29 11:22:53 nova03 journal: No se pudo leer desde el monitor: Conexión reinicializada por la máquina remota
May 29 11:22:53 nova03 journal: Error interno: early end of file from monitor: possible problem:
Cannot set up guest memory 'pc.ram': Cannot allocate memory

Same error in all nova's 01-02-03 like this.

My NOVA's have 128Gb of RAM and we used aprox 123-124 but with 1.5 (overcommit ram) we cannot allocate more instances...Do you know this issue? It's a bug?

Libvirt version :

[root@nova02 log]# libvirtd --version
libvirtd (libvirt) 1.2.8

In nova.conf, lines of overcommit are by default type (comment) 1:16 for cpu (this is ok) and 1:1.5 for ram (this is the problem)

Thanks!!!!