Have you tried to increase 'rpc_response_timeout' in nova.conf (e.g. 180 seconds)? https://bugs.launchpad.net/nova/+bug/1094226 --- JuanFra 2013/4/8 Jorge Luiz Correa <correajl at gmail.com> > Hi all, > > I'm trying to launch a lot of instances simultaneously. I'm using > Openstack 2012.2.3-0ubuntu1 installed on an ubuntu server, from > > deb http://ubuntu-cloud.archive.canonical.com/ubuntuprecise-updates/folsom main > > repository, according to the official documentation. When I try that my > nova-compute node losts the network configurations. I'm using 1 nic with a > bridge and FlatDhcpManager. > > I've been looking for the error but I don't get none. Just my nic losts > the IP and the instances stop to be created. A common behavior is that this > just occurs when I try to create more then 3 instances (I'm using the > Dashboard). If I choose to create 2 or 3, everything works fine! > > I'm thinking this can be a problem with NBD module. A syslog entry I could > see is: > > kernel: [179319.523389] block nbd15: Unexpected reply (ffff88080397fc48) > > Thanks! > > > _______________________________________________ > Mailing list: https://launchpad.net/~openstack > Post to : openstack at lists.launchpad.net > Unsubscribe : https://launchpad.net/~openstack > More help : https://help.launchpad.net/ListHelp > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack/attachments/20130409/21710f05/attachment.html>