@Antonio: The problem is that the VMs don't have the network performance that have the host (virtio-net is for excellence the best), by a great difference, virtio.net never will have the performance of a host. Now is in development a new technology: " virtio-blk dataplane" and "virto-net dataplane", ( https://www.google.com/search?q=%22virtio-block-data-plane%22&ie=utf-8&oe=utf-8#q=%22virtio-net+dataplane%22), but it by now don't support "live migration", HA, and other features.
I have configured DRBD to level of Host, and i have HA to level of VM with great results (database, several RAID 10 in SAS 15K, etc.., and obviously with a lower yield compared to a Host), but if you not need great speed for transfer of data with the network DRBD, i believe that will work DRBD well for you in the VMs. Best regards Cesar ----- Original Message ----- From: Joel N. Burleson-Davis To: Cesar Peschiera Cc: Antonio Fernández Pérez ; [email protected] Sent: Tuesday, February 17, 2015 12:55 PM Subject: Re: [DRBD-user] DRBD on virtual machine I've run DRBD inside virtual guests as well as on a virtual hosts - both without issues. It depends on your use case. It sounded to me like Antonio was planning on running DRBD in two VMs that he has to do P-to-V migrations on. -- Cheers, Joel Burleson-Davis tel: 512-637-8700 mob: 503-707-2065 www.securelink.com/people/joel secure networks for remote support -----Original Message-----From: Cesar Peschiera <[email protected]> To: Joel N. Burleson-Davis <[email protected]>, Antonio Fernández Pérez <[email protected]> Cc: [email protected] Subject: Re: [DRBD-user] DRBD on virtual machine Date: Tue, 17 Feb 2015 12:21:38 -0300 But DRBD must be running in the host, not in the guest (VM). --- Cesar ----- Original Message ----- From: Joel N. Burleson-Davis To: Antonio Fernández Pérez Cc: [email protected] Sent: Tuesday, February 17, 2015 11:39 AM Subject: Re: [DRBD-user] DRBD on virtual machine I don't know of a reason you wouldn't want to run DRBD on a VM. I've had no issues doing so. -- Cheers, Joel Burleson-Davis tel: 512-637-8700 mob: 503-707-2065 www.securelink.com/people/joel secure networks for remote support -----Original Message-----From: Antonio Fernández Pérez <[email protected]> To: [email protected] Subject: [DRBD-user] DRBD on virtual machine Date: Tue, 17 Feb 2015 14:55:02 +0100 Hi list: I need your help ... I have to migrate two physical servers with DRBD+Pacemaker+Corosync to virtual machines. On the new set of virtual machines I will can manage more hardware resources but, do you have any reason advise against using DRBD on virtual machines? I hope your answers. Thanks in advance. Regards, Antonio. _______________________________________________ drbd-user mailing list [email protected] http://lists.linbit.com/mailman/listinfo/drbd-user ---------------------------------------------------------------------------- _______________________________________________ drbd-user mailing list [email protected] http://lists.linbit.com/mailman/listinfo/drbd-user
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