Thanks for tips. In both cases we are using Fiber Channel storages
On Thu, Apr 3, 2014 at 1:18 PM, Nux! <[email protected]> wrote: > On 03.04.2014 10:15, Oleksandr Rybchenko wrote: > >> Hi all, >> >> we need to migrate from OnApp cloud based on Xen to cloudstack and xen >> hypervisors. Unfortunatelly there is no guides for this particular case. >> And Onapp doesn't has way to export VMs. So might be anyone did that >> before? >> >> Thanks >> > > Oleksandr, > > If it's onapp, then it's likely LVM storage. How are the cloudstack > Xenservers configured, also with local LVM or NFS? > If you do use local storage with LVM then you can simply "dd" the volumes > over SSH[1]. > If you use NFS server, then I recommend the following course of action > (take all this with a grain of salt as YMMV): > > 1 - create the replacement VM in cloudstack, take a note of which VHD file > it is using on the NFS server (say /mnt/blah-blah-blah/blah-blah.vhd) > 2 - shut down the VM > 3 - mount the NFS in the onapp hypervisor as well, stop the VM to be > moved, convert the LVM it is using (`virsh dumpxml VM-name` will tell you) > to /mnt/blah-blah-blah/blah-blah.vhd with vhd-util (make sure it's the > same file as in step 1!) > 4 - start the VM on cloudstack, it should now boot from the converted > volume, change IPs if required etc > > - If in Onapp your VM is PV (paravirtual) then it must be the same in > Cloudstack/Xenserver, same for HVM guests (like Windows etc) > > > Good luck! > > > [1] - I recommend this in order to reduce downtime > https://github.com/mpalmer/lvmsync > > -- > Sent from the Delta quadrant using Borg technology! > > Nux! > www.nux.ro > -- Oleksandr Rybchenko | IT Lead GlobalLogic P +380.44.492.9693 M +380.67.608.1036 www.globallogic.com <http://www.globallogic.com/> http://www.globallogic.com/email_disclaimer.txt
