It depends on what purpose you use Cloudstack. My purpose is Selling Virtual Machine, and thus I need high performance I/O . In Cloudstack, the best option is NFS, I have try few others, my intention is need network storage instead of local storage , and seems NFS is the best fit here. Other storage options available seems little bit of troublesome to implement ( i means open source storage , not commercial one) , CEPH is good, but performance is not really good especially if you have a lot VM to handle .
I am using a Full SSD, with a decent Raid Card, and performance is good, NFS is self configured and optimize, with a basic Linux installation . As NFS is not self-recovery as CEPH, now i am worry on is the Disk Spoil, replacement of disk blah blab blah ... On Wed, Feb 17, 2021 at 12:46 AM Matthew Ritchie <ritchie...@gmail.com> wrote: > Hi Hean, > > We currently use Solidfire as our storage solution which also has the > ability to provide QoS on a per-volume basis... and by that I mean > guaranteed IOPS. As far as I know SF is one of the strongest players in the > field and the great performance is part of what we are paying for. > > Ceph is also a great solution, but with combination with NFS I believe it > has poor performance. > > I just show the Shapeblue article regarding the 4.16 KVM support for Dell > EMC PowerFlex > > https://www.shapeblue.com/cloudstack-feature-first-look-storage-plugin-for-dell-emc-powerflextm/ > and between the lines I found this: "VM snapshot (disk-only, snapshot with > memory is not supported)" ... and I guess that also means NO VM Snapshot. > > best, > Matt > > On Tue, Feb 16, 2021 at 6:03 PM Hean Seng <heans...@gmail.com> wrote: > > > I am using on NFS, and working good on vm snapshot . I guess Ceph have > > comparatively poor on performance right ? > > > > On Tue, Feb 16, 2021 at 11:34 PM Matthew Ritchie <ritchie...@gmail.com> > > wrote: > > > > > Hi Peter, > > > > > > thank you for your answer!... and that was what I was afraid of :-) > > > > > > I guess that it will be very difficult to put KVM in production and > then > > > tell the clients that a VM snapshot is not possible. > > > Not to mention that in our case, the high Solidfire cost imposes a > better > > > use. > > > > > > I know that this is not the right list to ask but is there a roadmap > > > regarding this feature to be supported, by qemu I suppose? > > > > > > Regards, > > > Matt > > > > > > > > > On 2021/02/16 14:19:45, Peter Klein <p...@untangledtechnology.com> > > wrote: > > > > Hi Matt,> > > > > > > > > We run Cloudstack + KVM + Ceph. We haven't had any luck getting > > > > > snapshots to work but the alternative we've settled on for now is to > > > > > > take snapshots of the storage volume instead of the VM itself. > > Restoring > > > > > > > > from a snapshot this way is pretty cumbersome as you need to create > a > > > > > template from the storage snapshot and then create a "new" VM > instance > > > > > > > using that template.> > > > > > > > > > > > > Thanks,> > > > > > > > > Peter> > > > > > > > > On 2/16/21 09:04, Matthew Ritchie wrote:> > > > > > Hi everyone,> > > > > >> > > > > > I am working on a Cloudstack + KVM + Solidfire PoC and as far as I> > > > > > understand it is not possible to get a VM snapshot using SF as a > > > primary> > > > > > storage.> > > > > >> > > > > > I wanted to ask the community what is the recommended way to get a > > VM> > > > > > snapshot when one is using Cloudstack + KVM + (some block storage > > > solution)?> > > > > >> > > > > > As it is crucial to provide to clients the "VM snapshot" > capability I > > > guess> > > > > > there will be some sort of experience on that matter.> > > > > >> > > > > > thanks in advance> > > > > > Matt> > > > > >> > > > > > > > > > > > > > -- > > Regards, > > Hean Seng > > > -- Regards, Hean Seng
