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From Marcus Sorensen <shadow...@gmail.com>
Subject Re: CloudStack Storage Question
Date Sun, 13 Jan 2013 17:53:06 GMT
I'm not super familiar with all of the xen setup, but anything xen supports
as an SR should be usable in presetup  mode.
On Jan 13, 2013 10:48 AM, "Sebastien Goasguen" <runseb@gmail.com> wrote:

>
> On Jan 11, 2013, at 9:22 PM, Marcus Sorensen <shadowsor@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.tutkowski@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.tutkowski@solidfire.com> wrote:
> >>
> >>> Thanks, Edison!
> >>>
> >>> That's very helpful info.
> >>>
> >>>
> >>> On Thu, Jan 10, 2013 at 3:49 PM, Edison Su <Edison.su@citrix.com>
> wrote:
> >>>
> >>>>
> >>>>
> >>>>> -----Original Message-----
> >>>>> From: Mike Tutkowski [mailto:mike.tutkowski@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.tutkowski@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.tutkowski@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.tutkowski@solidfire.com
> >> o: 303.746.7302
> >> Advancing the way the world uses the
> >> cloud<http://solidfire.com/solution/overview/?video=play>
> >> *™*
> >>
>
>

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