> -----Original Message----- > From: Erik Weber [mailto:terbol...@gmail.com] > Sent: 17 February 2014 12:55 > To: dev@cloudstack.apache.org > Subject: Re: [PROPOSAL] Granular Controller Support in CloudStack over VMware > deployments > > I don't think this should be tied to the template, but rather the > instance/disk. A template could of course specify it's preferred controller. > > I don't have a use case for it, but you could potentially want to use > different controllers for different disks. E.g. your ROOT-volume might be > on a high end SAN you want to utilize with PV-driver, whilst your DATA-volume > might be on an old NFS solution where you'll live fine with > the SAS or Parallel driver. > > > However, for the first release the most important part is that a selection > gets introduced.
Sure, current proposal need to be extended to add support for mix of SCSI controllers for single instance. Let me try to find a solution for that and update the FS. > Currently you cannot install Windows 8.1 or Windows 2012 R2 on VMware with > CloudStack, which is a showstopper for many (for us - so > much that we changed hypervisor). > > -- > Erik > > > On Mon, Feb 17, 2014 at 6:42 AM, Alex Huang <alex.hu...@citrix.com> wrote: > > > Sateesh, > > > > I think if you want to do this then it points to a larger change to > > templates. Today, the templates carry no meta information. This means > > templates should carry meta information regarding the os image and how to > > support it. This should not specifically target vmware. It can benefit > > all other hypervisors. I know Anthony's also been working on something > > similar for XenServer. I suggest you guys get together and think about the > > right approach to abstract this and how to pass this information to the > > hypervisor from the template. > > > > --Alex > > > > > -----Original Message----- > > > From: Sateesh Chodapuneedi [mailto:sateesh.chodapune...@citrix.com] > > > Sent: Sunday, February 16, 2014 8:48 PM > > > To: dev@cloudstack.apache.org > > > Subject: [PROPOSAL] Granular Controller Support in CloudStack over > > > VMware deployments > > > > > > Hi, > > > > > > I would like to add support for granular disk controller support for > > CloudStack > > > over VMware deployments. > > > > > > To access virtual disks, CD/DVD-ROM, and SCSI devices, a virtual machine > > > uses storage controllers. > > > > > > Virtual storage controllers appear to a virtual machine as different > > types of > > > controllers of type IDE or SCSI. Further SCSI controllers can be > > classified into 4 > > > sub types, as below > > > BusLogic Parallel > > > LSI Logic Parallel, > > > LSI Logic SAS > > > VMware Paravirtual SCSI > > > > > > Currently CloudStack supports following combinations only. > > > DATA volumes - SCSI controller (LSI Logic Parallel) - Hard coded in > > source > > > code, no option for user to edit/choose the controller type > > > ROOT volumes - IDE or SCSI (LSI Logic Parallel) - Baed on value of > > global > > > configuration parameter "vmware.root.disk.controller" > > > > > > Currently the instances are deployed with the the LSI Parallel > > controller type. > > > This might result in failure to boot when attempting to deploy templates > > that > > > use the LSI SAS controller. > > > > > > CloudStack should provide administrator the means to choose the type of > > > disk controller (including sub types listed in introduction section > > above) for an > > > instance. The controller to be used by VM to access virtual disk > > (volume) can > > > decided for various reasons. Some of them are listed here, > > > * Some controllers are optimized for best performance over specific > > > backend infrastructure like SAN. Ex: VMware Paravirtual SCSI > > > * Compatibility of some controllers with VM's virtual hardware > > version or > > > guest operating system. > > > * Operating system vendor recommendation and default set of drivers > > > distributed as part of operating system image. Ex: Windows 8.1 ISO > > doesn't > > > have Lsi Logic Parallel SCSI drivers by default. Hence a virtual disk > > attached to > > > this controller won't accessible during installation of OS using the ISO. > > > > > > CloudStack should provide administrator an option which auto detects the > > > recommended disk controller for the instance's guest operating system and > > > applicable virtual hardware version. > > > Kindly let me know your thoughts. > > > > > > JIRA ticket - CLOUDSTACK-4787 > > > > > > Note:- Detailed Functional Specification is to be added at > > cwiki.apache.org > > > under 4.4 Design documents. Currently cwiki.apache.org is down. Waiting > > for > > > the site to come up to add the FS document. > > > > > > Regards, > > > Sateesh > > > >
