Dear Ruben, Thank you for replying
So what happens if the front-end opennebula is down the /var/lib/one isn't mounted,only System Datastore is mounted, then the VM can't work, right? (the vm requires image and additional files) Can you explain why we don't need to export the whole /var/lib/one ? Regards, Ndhuynh >>> "Ruben S. Montero" <rsmont...@opennebula.org> 11/7/2014 4:52 PM >>> Hi Ndhuynh Ceph storage in OpenNebula is handled as follows: 1.- Image Datastores, hold disk images repository as well as images for running VMs in a Ceph volume 2.- System Datastore holds additional VM files, checkpoints, context disks and the like. If you need live-migration the easiest way is to have a shared filesystem for the System Datastore. You don't need to export the whole /var/lib/one, just the datastore directory, though. If you do not need to live-migrate VMs you should be ok with a ssh based system datastore.... Cheers On Wed Nov 05 2014 at 12:09:47 PM Huynh Dac Nguyen <ndhu...@spsvietnam.vn> wrote: Hi All, I'm researching opennebula with ceph, i saw that most of guide focus on using ceph as datastore - block device, right? Do we need to mount ceph to /var/lib/one as file system to prevent the opennebula frontend down expectedly? My script is: 1) Make a ceph file system : one and mount to /var/lib/one in all opennebula node (front-end and node) 2) Create a ceph block device and add to opennebula as datastore Is this a right way? Regards, Ndhuynh ndhu...@spsvietnam.vn This e-mail message including any attachments is for the sole use of the intended(s) and may contain privileged or confidential information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not intended recipient, please immediately contact the sender by reply e-mail and delete the original message and destroy all copies thereof. _______________________________________________ Users mailing list Users@lists.opennebula.org http://lists.opennebula.org/listinfo.cgi/users-opennebula.org This e-mail message including any attachments is for the sole use of the intended(s) and may contain privileged or confidential information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not intended recipient, please immediately contact the sender by reply e-mail and delete the original message and destroy all copies thereof. _______________________________________________ Users mailing list Users@lists.opennebula.org http://lists.opennebula.org/listinfo.cgi/users-opennebula.org