Nitin, Thanks for the quick response. Jessica T.
On Tue, Aug 20, 2013 at 10:35 PM, Nitin Mehta <nitin.me...@citrix.com>wrote: > LGTM. > Thanks very much Jessica :) > > From: Jessica Tomechak <jessica.tomec...@gmail.com> > Date: Tuesday 20 August 2013 2:55 PM > To: Nitin Mehta <nitin.me...@citrix.com> > Cc: "dev@cloudstack.apache.org" <dev@cloudstack.apache.org>, " > us...@cloudstack.apache.org" <us...@cloudstack.apache.org>, Sudha > Ponnaganti <sudha.ponnaga...@citrix.com> > > Subject: Re: [Doc] Please review: CPU and RAM scaling for running VMs doc > > I have incorporated not only Nitin's comments in this email thread, but > also others in the bug itself. Please check and verify the fix so I may > close the doc bug for 4.2.0. This is checked in to both 4.2 and master. > > Diff: > https://git-wip-us.apache.org/repos/asf?p=cloudstack.git;h=2796f01 > > Bug: > https://issues.apache.org/jira/browse/CLOUDSTACK-867 > > Thanks for your help, > Jessica T. > > > On Thu, Aug 8, 2013 at 9:46 PM, Nitin Mehta <nitin.me...@citrix.com>wrote: > >> Jessica Thanks for the draft. Looks good. Some minor modifications. >> >> >> Correction 1 (check for "*") ----> Make it vmware tools instead of vmtools >> <listitem><para>VM*Ware* Tools or XenServer Tools must be installed on the >> virtual machine.</para></listitem> >> >> >> Correction 2 (check for "*") ----> Remove the decrease word. >> t is not always possible to accurately predict the CPU and RAM >> requirements >> + when you first deploy a VM. >> + You might need to increase or *decrease* these >> resources at any time during the life of a VM. >> + You can dynamically modify CPU and RAM levels to >> + change these resources for a running VM without >> incurring any downtime. >> >> >> >> Addition 1 ----> >> For dynamic scaling to work virtual machine should have XS tools / VMware >> tools installed on it. To ensure this Admin/User can do it in two ways :- >> * Admin/User while registering the template provides an input whether >> tools are installed on the template(or can be done using update template >> API). >> * If the user deploys a virtual machine with a template that does not have >> XS tools / VMware tools and later if he/she installs the tools on the VM >> then he can inform Cloudstack using using updatevirtualmachine API. After >> installation of tools and updating the virtual machine, user needs to stop >> and start the vm from cloudstack in order for dynamic scaling of CPU and >> RAM for that VM. >> >> >> Addition 2 ----> >> >> Some vmware caveats >> Limitation - 1 - After dynamically scaling memory user "might" need to run >> a couple of commands on Linux OS for new memory to take affect. Further >> reading below >> >> http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=di >> splayKC&externalId=1012764<http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1012764> >> Limitation - 2 - If a VM is initially assigned a RAM of less than 3gb then >> it cannot be dynamically scaled beyond 3gb. Holds true for for Linux 64 >> bit and windows 7 32 bit guest os. Further reading below. >> >> https://www.vmware.com/support/vsphere5/doc/vsphere-esx-vcenter-server-50-r >> elease-notes.html<https://www.vmware.com/support/vsphere5/doc/vsphere-esx-vcenter-server-50-release-notes.html> >> >> >> >> >> Thanks, >> -Nitin >> >> >> From: Jessica Tomechak <jessica.tomec...@gmail.com> >> Date: Friday 9 August 2013 6:41 AM >> To: "dev@cloudstack.apache.org" <dev@cloudstack.apache.org> >> Cc: "us...@cloudstack.apache.org" <us...@cloudstack.apache.org>, Sudha >> Ponnaganti <sudha.ponnaga...@citrix.com>, Nitin Mehta >> <nitin.me...@citrix.com> >> Subject: Re: [Doc] Please review: CPU and RAM scaling for running VMs doc >> >> >> +cc Nitin >> >> >> On Thu, Aug 8, 2013 at 6:08 PM, Jessica Tomechak >> <jessica.tomec...@gmail.com> wrote: >> >> Hi, >> >> CPU and RAM scaling for running VMs doc is ready for review. You can view >> the updated text at the link below. This is checked in to both master and >> 4.2 branch. >> >> Please provide your feedback. >> >> Diff: >> https://git-wip-us.apache.org/repos/asf?p=cloudstack.git;h=535e74d >> >> >> Bug: >> https://issues.apache.org/jira/browse/CLOUDSTACK-867 >> >> >> Regards, >> Jessica T. >> >> >> >> >> >> >> >> >> >> >
