Thanks Anshul, just what i wanted to know :) -thinktwo
2015-04-28 12:16 GMT+02:00 Anshul Gangwar <anshul.gang...@citrix.com>: > These restrictions are not there due to Hypervisor limitations. These > limitations are due to way this feature is implemented in CloudStack. > If we allow those operation then they may work fine but in long run they > may lead to corruption of VM etc. So to avoid those situation these > restrictions are added till we we figure out the better way. > > Regards, > Anshul > > On 28-Apr-2015, at 3:27 pm, Jan-Arve Nygård <jan.arve.nyg...@gmail.com > <mailto:jan.arve.nyg...@gmail.com>> wrote: > > Thanks Anshul, > > I did a quick test with adding vCPU and NIC in XenCenter after creating a > snapshot through CloudStack. I also tried reverting the VM to the snapshots > afterwards with the vCPU and NIC still added, and it worked OK. > > This made curious about what the background and details for this patch is. > If it's specific to any hypervisor/version and maybe is fixed in XenServer > 6.5? > > If you have some more details about why this was patched I could maybe help > about with testing this with XenServer 6.5. > > > -thinktwo > > 2015-04-28 10:32 GMT+02:00 Anshul Gangwar <anshul.gang...@citrix.com > <mailto:anshul.gang...@citrix.com>>: > > Hi Jan-Arve, > > In which order have you tried adding vCPUs and NICs? > i.e. After creating VM snapshot or before creating snapshot. > And have you deleted VM snapshots before adding vCPUs and NICs? > > Regards, > Anshul > > On 24-Apr-2015, at 5:58 pm, Jan-Arve Nygård <jan.arve.nyg...@gmail.com > <mailto:jan.arve.nyg...@gmail.com> > <mailto:jan.arve.nyg...@gmail.com>> wrote: > > Hi, > > With 4.5 there are some restrictions applied to VMs that have VM snapshots. > According to CLOUDSTACK-7688 > <https://issues.apache.org/jira/browse/CLOUDSTACK-7688> VM snapshot stops > working when the following operations are performed on VM with VM > snapshots: > > 1. Volumes of VM are migrated to other storage > 2. Add and remove NIC to/from VM > 3. Attach and Detach volume to VM > 4. Scale up/down of VM(change service offering) > 5. Volume snapshot which is not major use case in this scenario > 6. Resize volume > 7. Live migration of VM which involves storage migration > > Does anyone have more technical details about why this is restricted? > > I tried some quick tests with XenServer 6.5 and CS 4.5.1 and I was able to > both revert and take VM snapshots in CloudStack while adding vCPU and NICs > on the hypervisor. > > Thanks, > > -thinktwo > > > >
