On 06/11/2014 11:18 AM, Paul E. McKenney wrote: > On Wed, Jun 11, 2014 at 10:46:00AM -0500, David Chiluk wrote: >> Now think about what happens when a gateway goes down, the namespaces >> need to be migrated, or a new machine needs to be brought up to replace >> it. When we're talking about 3000 namespaces, the amount of time it >> takes simply to recreate the namespaces becomes very significant. >> >> The script is a stripped down example of what exactly is being done on >> the neutron gateway in order to create namespaces. > > Are the namespaces torn down and recreated one at a time, or is there some > syscall, ioctl(), or whatever that allows bulk tear down and recreating? > > Thanx, Paul
In the normal running case, the namespaces are created one at a time, as new customers create a new set of VMs on the cloud. However, in the case of failover to a new neutron gateway the namespaces are created all at once using the ip command (more or less serially). As far as I know there is no syscall or ioctl that allows bulk tear down and recreation. if such a beast exists that might be helpful. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
