Hi Sean, thanks for the suggestions. On Thu, 8 Dec 2016 at 23:10, Sean McGinnis <sean.mcgin...@gmx.com> wrote:
> Hi Belmiro, > > In Cinder there is the "raw disk device" driver that has been used by some > for Hadoop and similar applications. That may be something to look at, but > with a big warning. > > That being that it is deprecated in the Ocata release and will be removed > in Pike. > > The reason it is going to be removed has a couple reasons though. One big > one is that it is unable to meet the "minimum feature set" that we require > for a Cinder driver. There are just too many restrictions on what can be > done when you're using raw disk. > > The other reason was that after running a set of tests, it we really didn't > see that much of a difference in uing the raw device driver vs. configuring > the LVM driver appropriately. I don't have the full details of those tests > handy at the moment, but I'm sure we can track down some specifics if > needed. > > So I would recommend connecting your JBODs to some compute hosts and using > that disk space to back LVM, then configure Cinder with the LVM driver to > use that pool of space to present volumes to your compute instances. > > Thanks, > Sean > > On Thu, Dec 08, 2016 at 07:46:35PM +0100, Belmiro Moreira wrote: > > Hi, > > > > we have a set of disk servers (JBOD) that we would like to integrate into > > our cloud to run applications like Hadoop and Spark. > > > > Using file disks for storage and a huge "/var/lib/nova" is not an option > > for these use cases so we would like to expose the local drives directly > to > > the VMs as ephemeral disks. > > > > > > > > Is there already something in Nova that allows this? > > > > > > > > thanks, > > > > Belmiro > > > > CERN > > > > __________________________________________________________________________ > > OpenStack Development Mailing List (not for usage questions) > > Unsubscribe: > openstack-dev-requ...@lists.openstack.org?subject:unsubscribe > > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev > > > __________________________________________________________________________ > OpenStack Development Mailing List (not for usage questions) > Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev >
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