> -----Original Message----- > From: Rohit Yadav [mailto:rohit.ya...@shapeblue.com] > Sent: 14 January 2015 14:46 > To: dev@cloudstack.apache.org > Subject: Re: [MERGE] Support Granular SCSI disk controllers in CloudStack > over VMware hypervisor > > Hi Sateesh, > > Can can send a Github PR for review (if you want to get a code review) and > share code coverage wrt unit (and integration) tests. I > think if the code coverage is well above 80% I think everyone should be okay > with the merge. > > Let me know if you need any help. Hi Rohit, Thanks for your comment. I had to be offline over last month due to some personal urgency. Sure, I will look at the unit test/code coverage on the changes introduced with this branch and get back on this. BTW, the code changes are sitting in ACS branch 'vmware-disk-controllers'.
Regards, Sateesh > > On Wednesday 14 January 2015 09:06 AM, Sateesh Chodapuneedi wrote: > > Hi, > > > > I would like merge the branch 'vmware-disk-controllers' into master branch. > > This branch contains implementation to support > Granular SCSI disk controllers in CloudStack over VMware hypervisor. > > > > This is specific to VMware hypervisor only. The code changes are in area of > > vmware resource. > > > > All changes are being tracked using JIRA ticket [3] with code in ACS branch > > 'vmware-disk-controllers'. > > Please see [2[ for Functional specification which was discussed in proposal > > thread [1] below and talk [4] held at CCC EU 2014, > Budapest. > > > > 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" > > > > For some guest operating systems like Windows 2012 R2, deploying instances > > with LSI Parallel controller might result in failure to > boot as guest OS vendor is not shipping the OS with LSI Logic parallel > drivers. > > OS Vendor is supporting/shipping LSI SAS controller as preferred. > > > > 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. > > > > Now CloudStack provides administrator options to specify disk controllers > > to use for user instances at various ways. > > 1) Global configuration settings > > 2) Template settings (during registration of template) > > 3) Option to enable auto detection of the recommended disk controller for > > the instance's guest operating system by vendor and > applicable virtual hardware version. > > > > Please let me know your comments. > > > > Regards, > > Sateesh > > > > [1] http://markmail.org/thread/en4skoqu4mbitacs > > [2] Functional specification document - > > https://cwiki.apache.org/confluence/x/vI5cAg > > [3] https://issues.apache.org/jira/browse/CLOUDSTACK-4787 > > [4] http://ccceu2014.sched.org/event/5d24aad67443542c72b5fc51c25c090b > > > > > > ________________________________________ > > From: Sateesh Chodapuneedi > > Sent: Tuesday, January 06, 2015 12:06 PM > > To: dev@cloudstack.apache.org > > Subject: RE: Server 2012 R2 Bug on CS 4.4.0 with vmware hypervisor > > > >> -----Original Message----- > >> From: Sateesh Chodapuneedi [mailto:sateesh.chodapune...@citrix.com] > >> Sent: 15 November 2014 14:06 > >> To: dev@cloudstack.apache.org; Michael Phillips > >> Subject: RE: Server 2012 R2 Bug on CS 4.4.0 with vmware hypervisor > >> > >> Hi Michael, > >> > >>> further clarification; CS adds the data disk to the VM but since > >>> it's listed as SCSI device 0:0, the vm is unable to find it when you > >> do a disk rescan. > >> Yes, due to absence of LSI Logic Parallel driver in the guest, the virtual > >> disk goes undetected. > >> > >> Currently for all data volumes, of user instance deployed by > >> CloudStack, are attached to LSI Logic Parallel controller. And this > >> is not configurable, which is be a blocker for most recent versions of > >> Windows OS like Windows 2012 R2 and Windows 8.1 which > does not ship/pack LSI Logic Parallel driver by default, which means all > virtual disks attached to this controller would not detected. > >> > >> Support for choice of controllers is in progress and expected to be > >> available in CloudStack 4.6 release. > >> I am going to talk about proposal to address this and implementation > >> details in CloudStack Collaboration Conference scheduled next week at > >> Budapest, Hungary. > >> > >> Link to the entry in conference schedule is [1] and JIRA ticket for > >> this feature is [2] > >> > >> [1] > >> http://ccceu2014.sched.org/event/5d24aad67443542c72b5fc51c25c090b?ifr > >> ame=yes&w=&sidebar=yes&bg=no [2] > >> https://issues.apache.org/jira/browse/CLOUDSTACK-4787 > > > > Hi, > > > > I am working on implementation of this feature based on functional > > specification [2] and followed by proposal thread [1] below. > > All changes are being tracked using JIRA ticket [3] using ACS branch > > 'vmware-disk-controllers' > > > > [1] http://markmail.org/thread/en4skoqu4mbitacs > > [2] Short link for functional specification document - > > https://cwiki.apache.org/confluence/x/vI5cAg > > [3] https://issues.apache.org/jira/browse/CLOUDSTACK-4787 > > > > Regards, > > Sateesh > >> > >> > >>> -----Original Message----- > >>> From: Erik Weber [mailto:terbol...@gmail.com] > >>> Sent: 15 November 2014 12:01 > >>> To: dev@cloudstack.apache.org > >>> Subject: Re: Server 2012 R2 Bug on CS 4.4.0 with vmware hypervisor > >>> > >>> There's an issue in jira to allow controller selection, but it has been > >>> stale for some time. > >>> > >>> This is one of the reasons we switched to xenserver. > >>> > >>> I believe there's a quick talk on ccceu about the issue. > >>> > >>> Erik > >>> > >>> Den lørdag 15. november 2014 skrev Michael Phillips > >>> <mphilli7...@hotmail.com> > >>> følgende: > >>> > >>>> So I was unable to add a data disk to my vm running server 2012 R2 > >>>> standard, so I started tracking down the issue and I think I found it. > >>>> So when provisioning a vm running server 2012 R2, CS creates the VM > >>>> with the "LSI Logic Parallel" adapter. It looks like the only > >>>> reason the machine is even able to boot is becuase the ROOT drive > >>>> is set to be an IDE drive, specifically (IDE 0:1). Any data disks > >>>> added to the same machine are set as SCSI drives. So if I added one > >>>> data disk it would be listed as SCSI 0:0. So it seems the mismatch > >>>> is between the controller type CS is using and the disk type. So this > >>>> bring me to the major question at hand. > >>>> For server 2012 R2 vmware natively uses the "LSI Logic SAS" controller. > >>>> Why in the world is CS not using the same controller, and is there > >>>> a way around this? > >>>> > >>>> > > -- > Regards, > Rohit Yadav > Software Architect, ShapeBlue > M. +91 8826230892 | rohit.ya...@shapeblue.com > Blog: bhaisaab.org | Twitter: @_bhaisaab PS. 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