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From Rafael Weingartner <rafaelweingart...@gmail.com>
Subject Re: Can System VMs be migrated?
Date Tue, 10 Feb 2015 18:54:58 GMT
Somesh Naidu,

I am using the 4.3.0 version.

I am using Xen hypervisor with XAPI (old XCP) packages over Debian 7.4

I did not understand what you mean with “in the system offerings” .  The
primary storage of the clusters are NFS servers.

On Tue, Feb 10, 2015 at 1:25 PM, Somesh Naidu <Somesh.Naidu@citrix.com>
wrote:

> Rafael,
>
> What version of CS are you using? I have a 4.3 and a 4.5 environment with
> XS/VMware/KVM hypervisors and on all of them, the system VMs are being
> created on shared primary storage.
>
> Can you check what storage type is set in the system offerings?
>
> Regards,
> Somesh
>
>
> -----Original Message-----
> From: Rafael Weingartner [mailto:rafaelweingartner@gmail.com]
> Sent: Tuesday, February 10, 2015 7:20 AM
> To: dev@cloudstack.apache.org
> Subject: Re: Can System VMs be migrated?
>
> Marcus, the parameter “system.vm.use.local.storage” was already set to
> false. That parameter does not make any sense to me; it seems that it is
> not used, at least for Xen.
>
> Abhinandan Prateek, I did not configure it erroneously. I configured NFS
> storage to store users VMs (primary storage), I am not using local storage
> for anything, but sadly I was forced to create a local SR into every host.
> I had exchanged some emails about that in the users list a while ago:
>
>
> http://mail-archives.apache.org/mod_mbox/cloudstack-users/201309.mbox/%3CCAG97radxdiUaim7-W5nw-BAcvTFV0MgD6RJzB64=ueRvM89V0g@mail.gmail.com%3E
>
> The problem seems to be here:
>
> com.cloud.hypervisor.xen.resource.XcpOssResource.createPatchVbd(Connection,
> String, VM)
>
> That class do not use the parameter “system.vm.use.local.storage”, it
> forced us to add a local SR in the host. Then it deploys the systemvm-vdi
> into that “_host.localSRuuid”.
>
>
> http://fossies.org/dox/apache-cloudstack-4.4.2-src/XcpOssResource_8java_source.html
>
> Is that behavior expected? I have lived with that since CS 4.1.1 (I am
> using 4.3.0) and it seems to be the same in 4.4.
>
>
> On Tue, Feb 10, 2015 at 3:09 AM, Marcus <shadowsor@gmail.com> wrote:
>
> > edit the global setting "system.vm.use.local.storage", restart mgmt
> server.
> >
> > On Mon, Feb 9, 2015 at 8:20 PM, Abhinandan Prateek
> > <abhinandan.prateek@shapeblue.com> wrote:
> > > While creating a zone you can configure the use of local storage. It
> > seems you configured it erroneously.
> > > In 4.3 as per my knowledge live vm migration with local storage is
> > broken. Use it in 4,5 it works I have tested it.
> > > If you do not want to use local storage make sure you turn it off while
> > creating the zone.
> > >
> > > -abhi
> > >
> > >
> > >> On 10-Feb-2015, at 1:20 am, Rafael Weingartner <
> > rafaelweingartner@gmail.com> wrote:
> > >>
> > >> Well,
> > >> There is a button, take a look at the SS I took:
> > >> http://postimg.org/image/5sr7yxyud/
> > >>
> > >> I am curious, why does the CS allocate system VMs’ VDI on local SR on
> > Xen
> > >> hypervisor? Why not use the primary storage of the cluster in which
> the
> > >> host is in?
> > >> I looked at the code, and it is hard coded there, Xen hosts have to
> > have a
> > >> local SR, otherwise you cannot add them into CS (first time I saw
> that I
> > >> found it very weird, I even sent an email about it, but did not get
> any
> > >> reply).
> > >>
> > >> That does not seem to happen with other hypervisors.
> > >>
> > >> Now that you mentioned the maintenance mode, I noticed that system VMs
> > are
> > >> not being migrated when I put its host in maintenance, I thought that
> > was a
> > >> normal behavior (weird one but normal, given that those VMs are using
> > the
> > >> local SR of the Xen hypervisor).
> > >>
> > >> On Mon, Feb 9, 2015 at 5:10 PM, Yiping Zhang <yzhang@marketo.com>
> > wrote:
> > >>
> > >>> How do you migrate systemVM’s in UI?
> > >>>
> > >>> If you just put the host, where the systemVM’s are running, into
> > >>> “maintenance” mode, then you may have hit this bug which was fixed
in
> > >>> 4.4.0: https://issues.apache.org/jira/browse/CLOUDSTACK-5660
> > >>>
> > >>>
> > >>> Yiping
> > >>>
> > >>> On 2/9/15, 11:01 AM, "Rafael Weingartner" <
> rafaelweingartner@gmail.com
> > >
> > >>> wrote:
> > >>>
> > >>>> Update:
> > >>>> The UI may not be working because it uses the command
> > "migrateSystemVm",
> > >>>> instead of "migrateVirtualMachineWithVolume".
> > >>>> Shoud I open a bug report?
> > >>>>
> > >>>> On Mon, Feb 9, 2015 at 3:21 PM, Rafael Weingartner <
> > >>>> rafaelweingartner@gmail.com> wrote:
> > >>>>
> > >>>>> I also tried and it did not work. I am using CS 4.3.0.
> > >>>>> I used the UI button. I got the error "VM_REQUIRES_SR".
> > >>>>>
> > >>>>> On Mon, Feb 9, 2015 at 2:52 PM, Prashant Kumar Mishra <
> > >>>>> prashantkumar.mishra@citrix.com> wrote:
> > >>>>>
> > >>>>>> 1-Yes we can migrate system vm , I have done it many times
> > >>>>>>
> > >>>>>>
> > >>>>>> 2-Even if vm is deployed with local storage you can migrate
to
> > another
> > >>>>>> local storage . Check out this api migrateVirtualMachineWithVolume
> > >>>>>>
> > >>>>>>
> > >>>>>>
> > >>>>>>
> > >>>>>>
> > >>>
> > http://cloudstack.apache.org/docs/api/apidocs-4.4/root_admin/migrateVirt
> > >>>>>> ual
> > >>>>>> MachineWithVolume.html
> > >>>>>>
> > >>>>>> <
> > >>>
> > http://cloudstack.apache.org/docs/api/apidocs-4.4/root_admin/migrateVir
> > >>>>>> tualMachineWithVolume.html>
> > >>>>>>
> > >>>>>>
> > >>>>>> ~prashant
> > >>>>>>
> > >>>>>>
> > >>>>>>
> > >>>>>>
> > >>>>>> On 2/9/15, 5:08 PM, "Rafael Weingartner" <
> > rafaelweingartner@gmail.com>
> > >>>>>> wrote:
> > >>>>>>
> > >>>>>>> That is the answer I wanted to hear.  If we can migrate
system
> VMs,
> > >>>>>> why
> > >>>>>>> are
> > >>>>>>> the systems VMs¹ VDI allocated in the local SR on
Xen hypervisor?
> > >>>>>>>
> > >>>>>>> It is not possible to migrate those system VMs, hence
they are
> > using a
> > >>>>>>> local SR.
> > >>>>>>>
> > >>>>>>> On Mon, Feb 9, 2015 at 3:01 AM, Sanjeev Neelarapu <
> > >>>>>>> sanjeev.neelarapu@citrix.com> wrote:
> > >>>>>>>
> > >>>>>>>> Yes, we can.
> > >>>>>>>>
> > >>>>>>>> -----Original Message-----
> > >>>>>>>> From: Rafael Weingartner [mailto:rafaelweingartner@gmail.com]
> > >>>>>>>> Sent: Saturday, February 07, 2015 2:41 AM
> > >>>>>>>> To: dev@cloudstack.apache.org
> > >>>>>>>> Subject: Can System VMs be migrated?
> > >>>>>>>>
> > >>>>>>>> Hi folks,
> > >>>>>>>>
> > >>>>>>>> I was wondering, can we migrate systems vms from
a host to
> another
> > >>>>>> one
> > >>>>>>>> in
> > >>>>>>>> the same cluster?
> > >>>>>>>>
> > >>>>>>>>
> > >>>>>>>> --
> > >>>>>>>> Rafael Weingärtner
> > >>>>>>>>
> > >>>>>>>
> > >>>>>>>
> > >>>>>>>
> > >>>>>>> --
> > >>>>>>> Rafael Weingärtner
> > >>>>>>
> > >>>>>>
> > >>>>>
> > >>>>>
> > >>>>> --
> > >>>>> Rafael Weingärtner
> > >>>>>
> > >>>>
> > >>>>
> > >>>>
> > >>>> --
> > >>>> Rafael Weingärtner
> > >>>
> > >>>
> > >>
> > >>
> > >> --
> > >> Rafael Weingärtner
> > >
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> --
> Rafael Weingärtner
>



-- 
Rafael Weingärtner

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