Hi, yes, the disks are local storage on each compute nodes But I did configure LVM on each compute node, and did configure this according to the Juno Install guide:
"The service provisions logical volumes on this device using the LVM driver and provides them to instances via iSCSI transport." And volume groups are configured on each compute node: vgcreate cinder-volumes /dev/sdX So, I guess I'm using a shared storeage ( iscsi ) ? Are you referring to LVM configuration and thus a shared storage, iscsi ? Best regards Yngvi From: Xabier Elkano [mailto:xelk...@hostinet.com] Sent: 11. júní 2015 12:13 To: Yngvi Páll Þorfinnsson; openstack@lists.openstack.org Subject: Re: [Openstack] live migration of instances Hi, do you have shared storage for your instances? If your instances disks are in a shared storage like iscsi or CEPH you can do live migrations without problems, otherwise, if your instances disks are in the compute nodes local storage ( /var/lib/nova/instances), you may need to put this directory in a NFS share to be able to do live migrations. BR, Xabier El 11/06/15 a las 11:56, Yngvi Páll Þorfinnsson escribió: Hi I have installed and configured OpenStack(Juno) environment on Ubuntu(14.04). We have currently 1 controller node, 3 network nodes and 4 compute nodes as well as 4 swift nodes. I'm using OpenStack Networking (neutron). I was thinking of doing a "live migration" of several instances, if I need to do a OS upgrade on a compute node. For the task of configuring "live magration" I've been reading this document: OpenStack Cloud Administrator Guide current (2015-05-21) Copyright © 2013-2015 OpenStack Foundation Some rights reserved. I can quickly see it's necessary to add this line to the nova.conf file ( on computer nodes): live_migration_flag=VIR_MIGRATE_UNDEFINE_SOURCE,VIR_MIGRATE_PEER2PEER, VIR_MIGRATE_LIVE, VIR_MIGRATE_TUNNELLED Also, it seems I need to configure a NFS mount og the dir /var/lib/nova/instances and thus configures file system access between all compute nodes. My question is: Is this the only way to configure a Live migration of instances in Openstack ? i.e. configure a nfs mount of directories? Best regards Yngvi _______________________________________________ Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack Post to : openstack@lists.openstack.org<mailto:openstack@lists.openstack.org> Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
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