That's not a bad position. I have concerns with what I'm proposing, so a hypervisor migration may actually bring less risk than a storage abomination.
On Dec 9, 2017 7:09 PM, "Donny Davis" <do...@fortnebula.com> wrote: > What I am getting at is that instead of sinking a bunch of time into this > bandaid, why not sink that time into a hypervisor migration. Seems well > timed if you ask me. > > There are even tools to make that migration easier > > http://libguestfs.org/virt-v2v.1.html > > You should ultimately move your hypervisor instead of building a one off > case for ceph. Ceph works really well if you stay inside the box. So does > KVM. They work like Gang Buster's together. > > I know that doesn't really answer your OP, but this is what I would do. > > ~D > > On Sat, Dec 9, 2017 at 7:56 PM Brady Deetz <bde...@gmail.com> wrote: > >> We have over 150 VMs running in vmware. We also have 2PB of Ceph for >> filesystem. With our vmware storage aging and not providing the IOPs we >> need, we are considering and hoping to use ceph. Ultimately, yes we will >> move to KVM, but in the short term, we probably need to stay on VMware. >> On Dec 9, 2017 6:26 PM, "Donny Davis" <do...@fortnebula.com> wrote: >> >>> Just curious but why not just use a hypervisor with rbd support? Are >>> there VMware specific features you are reliant on? >>> >>> On Fri, Dec 8, 2017 at 4:08 PM Brady Deetz <bde...@gmail.com> wrote: >>> >>>> I'm testing using RBD as VMWare datastores. I'm currently testing with >>>> krbd+LVM on a tgt target hosted on a hypervisor. >>>> >>>> My Ceph cluster is HDD backed. >>>> >>>> In order to help with write latency, I added an SSD drive to my >>>> hypervisor and made it a writeback cache for the rbd via LVM. So far I've >>>> managed to smooth out my 4k write latency and have some pleasing results. >>>> >>>> Architecturally, my current plan is to deploy an iSCSI gateway on each >>>> hypervisor hosting that hypervisor's own datastore. >>>> >>>> Does anybody have any experience with this kind of configuration, >>>> especially with regard to LVM writeback caching combined with RBD? >>>> _______________________________________________ >>>> ceph-users mailing list >>>> ceph-users@lists.ceph.com >>>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >>>> >>>
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