Re: [Openstack] ephemeral disks location

2017-01-25 Thread Eugen Block
Why would ephemeral instance disks be copied if the backing store is a shared system like Ceph. Sorry for the confusion, I tried to describe the workflow if you use local disk storage for the instances. Of course there's no disk copying if you use a storage like ceph. Zitat von Jay Pipes

Re: [Openstack] ephemeral disks location

2017-01-25 Thread Jay Pipes
On 01/25/2017 03:19 AM, Eugen Block wrote: All these instances are in our ceph cluster. The instance path is defined in nova.conf: # Where instances are stored on disk (string value) instances_path = $state_path/instances If one compute node fails but it's able to initiate a migration, the sam

Re: [Openstack] ephemeral disks location

2017-01-25 Thread Eugen Block
Hi where are the ephemeral disks stored? if you decide to use local storage, your instance's disk would be stored in ---cut here--- compute1:~ # ls -l /var/lib/nova/instances/ insgesamt 60 drwxr-xr-x 2 nova nova 4096 3. Jan 11:05 14b75237-7619-481f-9636-792b64d1be17 drwxr-xr-x 2 nova nova 40

[Openstack] ephemeral disks location

2017-01-24 Thread Manuel Sopena Ballesteros
Hi, I have been searching on the internet and could not find an answer to this question. I understand that ephemeral disks lives until the VM is destroyed, but where are the ephemeral disks stored? On local host hosting the VM or in centralized storage (e.g. Ceph) or can I have both options?