Greg - this is how we do it. See "Null-Tier Architecture" at http://www.pistoncloud.com/cloud-technology/cloud-architecture/ . Note that it's not just CPU - you end up needing more RAM and Network bandwidth as well.
Joshua On Jan 8, 2013, at 8:22 AM, Greg Chavez <greg.cha...@gmail.com> wrote: > > Razique, > > Yes. We have the OS on a RAID 1 and the rest of the disks are in a RAID 10. > However, should we go with the Compute+Swift Node architecture, we'll be > using this: > > [root@kvm-cs-gen-09i ~]# df -h > Filesystem Size Used Avail Use% Mounted on > /dev/mapper/vg00-root > 130G 1.9G 122G 2% / > tmpfs 379G 0 379G 0% /dev/shm > /dev/sda1 194M 33M 152M 18% /boot > /dev/sdb1 559G 33M 559G 1% /swift1 > /dev/sdc1 559G 33M 559G 1% /swift2 > /dev/sdd1 559G 33M 559G 1% /swift3 > /dev/sde1 559G 33M 559G 1% /swift4 > /dev/sdf1 559G 33M 559G 1% /swift5 > /dev/sdg1 559G 33M 559G 1% /swift6 > /dev/sdh1 559G 33M 559G 1% /swift7 > /dev/sdi1 559G 33M 559G 1% /swift8 > > What do you think? > > --Greg > > > On Tue, Jan 8, 2013 at 11:04 AM, Razique Mahroua <razique.mahr...@gmail.com> > wrote: > Hey Greg, > so if I understand well, you want to have the disk on the hypervisors be used > as Swift nodes right? > is there any underlying RAID? > > Regards, > Razique Mahroua - Nuage & Co > razique.mahr...@gmail.com > Tel : +33 9 72 37 94 15 > > <NUAGECO-LOGO-Fblan_petit.jpg> > > Le 8 janv. 2013 à 16:28, Greg Chavez <greg.cha...@gmail.com> a écrit : > >> >> We are in the process of replacing our Diablo KVM infrastructure with >> Folsom. Up until now, our virts have been using the local Compute node's >> disk space for their images which, obviously, defeats much of the purpose of >> a virtualizing. We are ready to implement an iSCSI SAN, but we're a bit >> bummed that we're going to essentially be wasting the copious disk space on >> all the systems we ordered to serve as Compute nodes. >> >> SO... we were' thinking about doubling up our Compute nodes and Swift >> storage nodes, fully aware that this might require us to reserve more cores >> for the KVM host. >> >> Has any one else tried this? Is this clearly a bad, bad, bad idea? >> >> Thanks. >> -- >> \*..+.- >> --Greg Chavez >> +//..;}; >> _______________________________________________ >> Mailing list: https://launchpad.net/~openstack >> Post to : openstack@lists.launchpad.net >> Unsubscribe : https://launchpad.net/~openstack >> More help : https://help.launchpad.net/ListHelp > > > > _______________________________________________ > Mailing list: https://launchpad.net/~openstack > Post to : openstack@lists.launchpad.net > Unsubscribe : https://launchpad.net/~openstack > More help : https://help.launchpad.net/ListHelp
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