Hi Hean, I totally agree with you that it depends on how you use Cloudstack. There are as many different Cloudstack uses as there are network and storage solutions that make it an interesting puzzle to finally find the optimal combination.
In any way it is good to exchange our experiences and extend our knowledge :-) best, Matt On Tue, Feb 16, 2021 at 8:08 PM Hean Seng <heans...@gmail.com> wrote: > 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 >
