On Jan 11, 2013, at 9:22 PM, Marcus Sorensen <shadow...@gmail.com> wrote:
> On the KVM side, you can do NFS, Local disk storage, CLVM (shared block > device that has Clustered LVM on top of it, a primary pool is a particular > volume group and cloudstack carves out logical volumes out of it as > needed), and RBD (RADOS Block devices, Ceph shared storage. You point it at > your cluster and cloudstack creates RBD devices as needed). Also > SharedMountPoint for something like GFS,OCFS or some shared filesystem. > > Xen has NFS, a 'PreSetup' where you create an SR in your Xen cluster and > pass the SR to it (I think), and iSCSI (I'm not clear on how this works, > but I'm sure its in the docs) Hi Marcus, that's a nice summary. Can't we do any of the distributed file systems for primary storage with Xen ? -Sebastien > > On Fri, Jan 11, 2013 at 1:14 PM, Mike Tutkowski < > mike.tutkow...@solidfire.com> wrote: > >> So, being new to CloudStack, I'm not sure what kind of storage protocols >> are currently supported in the product. To my knowledge, NFS shares are >> what CloudStack has only supported in the past. Does CloudStack support >> iSCSI targets at present? >> >> Thanks! >> >> >> On Thu, Jan 10, 2013 at 3:58 PM, Mike Tutkowski < >> mike.tutkow...@solidfire.com> wrote: >> >>> Thanks, Edison! >>> >>> That's very helpful info. >>> >>> >>> On Thu, Jan 10, 2013 at 3:49 PM, Edison Su <edison...@citrix.com> wrote: >>> >>>> >>>> >>>>> -----Original Message----- >>>>> From: Mike Tutkowski [mailto:mike.tutkow...@solidfire.com] >>>>> Sent: Thursday, January 10, 2013 2:22 PM >>>>> To: cloudstack-dev@incubator.apache.org >>>>> Subject: CloudStack Storage Question >>>>> >>>>> Hi everyone, >>>>> >>>>> I'm new to CloudStack and am trying to understand how it works with >>>>> regards to storage exposed to hypervisors. >>>>> >>>>> For example: >>>>> >>>>> My company, SolidFire, has a feature that exists at the virtual-volume >>>> (for us, >>>>> equivalent to a LUN) layer: Hard Quality of Service. So, for each >>>> volume in >>>>> one of our clusters, you can specify a minimum and maximum number of >>>>> IOPS (beneficial to Cloud Service Providers who want to write hard >> SLAs >>>>> around performance). >>>>> >>>>> We have a potential customer who is using CloudStack currently with >>>> another >>>>> vendor (via NFS shares). They asked me today how a hypervisor run >> under >>>>> CloudStack would see the iSCSI storage exposed to them in one of our >>>>> volumes. More specifically, can the hypervisor see a volume per VM or >>>> is the >>>>> hypervisor forced to create all of its VMs off of the same volume? If >>>> the >>>>> hypervisor is forced to create all of its VMs off of the same volume, >>>> then this >>>>> would significantly reduce the value of our hard quality of service >>>> offering >>>>> since all of these VMs would have to run at the same performance SLA. >>>> >>>> >>>> It depends on hypervisor, for KVM, per VM per LUN will work, xenserver >>>> doesn't work. For Vmware, it will work, but with a limitation(one ESXi >> host >>>> can only have 256 LUN at max). >>>> >>>>> >>>>> Can anyone help me better understand how this would work? >>>>> >>>>> Thanks so much!! >>>>> >>>>> -- >>>>> *Mike Tutkowski* >>>>> *Senior CloudStack Developer, SolidFire Inc.* >>>>> e: mike.tutkow...@solidfire.com >>>>> o: 303.746.7302 >>>>> Advancing the way the world uses the >>>>> cloud<http://solidfire.com/solution/overview/?video=play> >>>>> *(tm)* >>>> >>> >>> >>> >>> -- >>> *Mike Tutkowski* >>> *Senior CloudStack Developer, SolidFire Inc.* >>> e: mike.tutkow...@solidfire.com >>> o: 303.746.7302 >>> Advancing the way the world uses the cloud< >> http://solidfire.com/solution/overview/?video=play> >>> *™* >>> >> >> >> >> -- >> *Mike Tutkowski* >> *Senior CloudStack Developer, SolidFire Inc.* >> e: mike.tutkow...@solidfire.com >> o: 303.746.7302 >> Advancing the way the world uses the >> cloud<http://solidfire.com/solution/overview/?video=play> >> *™* >>
