incubator-cloudstack-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Sateesh Chodapuneedi <sateesh.chodapune...@citrix.com>
Subject RE: [DISCUSS] Enabling storage xenmotion on xenserver 6.1
Date Wed, 16 Jan 2013 13:59:12 GMT
> Are we going to have a separate discussion on storage migration on
> VMware? Is there a issue filed for VMware storage migration work?
I am interested in VMware part of storage migration and would like to volunteer for it.
Can pick this up as soon as the VMware dvSwitch support (CLOUDSTACK-657) feature completes.
Would initiate a discussion/proposal soon with FS.

Regards,
Sateesh

> -----Original Message-----
> From: Srikanteswararao Talluri
> [mailto:srikanteswararao.talluri@citrix.com]
> Sent: 16 January 2013 19:10
> To: cloudstack-dev@incubator.apache.org
> Subject: RE: [DISCUSS] Enabling storage xenmotion on xenserver 6.1
> 
> Are we going to have a separate discussion on storage migration on
> VMWare? Is there a issue filed for VMware storage migration work?
> 
> Thanks,
> ~Talluri
> 
> -----Original Message-----
> From: Chris Sears [mailto:chris.x.sears@sungard.com]
> Sent: Wednesday, January 16, 2013 8:05 AM
> To: cloudstack-dev@incubator.apache.org
> Subject: Re: [DISCUSS] Enabling storage xenmotion on xenserver 6.1
> 
> If we are thinking about VMware compatibility, there are a number of
> factors can prevent a VM from being eligible for storage vMotion:
> http://pubs.vmware.com/vsphere-
> 50/index.jsp?topic=%2Fcom.vmware.vsphere.vcenterhost.doc_50%2FGUID-
> A16BA123-403C-4D13-A581-DC4062E11165.html
> 
> On vSphere versions before 5.0, having snapshots or linked clones will
> also disqualify a VM for storage vMotion. In 5.0 and later, this is not
> a limitation. ESX 4.x hosts running the Standard or Advanced edition do
> not support Storage vMotion, whereas Enterprise or Enterprise Plus
> editions do support it. Can these be accounted for using the
> hypervisor_capabilities table?
> 
>  - Chris
> 
> 
> 
> 
> On Tue, Jan 15, 2013 at 7:16 PM, Alex Huang <Alex.Huang@citrix.com>
> wrote:
> 
> > Devdeep,
> >
> > I read the FS and have the following questions.
> >
> > - My understanding is that XenServer implements XenMotion by using
> > snapshots and that CloudStack's snapshots can interfere with this
> process.
> >  This understanding might be old.  Can you confirm that this is not
> > the case?  If it is the case, how do you plan on dealing with that?
> > - I like to see exactly the API flow someone should execute this with.
> > I had one question that remains unanswered which is are we planning to
> > retrieve  a list of available hosts and storage pools to migrate to.
> > From the listHosts API that seems to be the case but what if it is
> > only storage pool migration?
> > - Are we planning to add APIs to storagepool allocator to make the
> > selection of storage pool portion work?  Is the current API enough?  I
> > see a flow for the actual migration but I don't see a flow for
> > selecting what to migrate to.
> > - Currently preparation on the destination host to migrate is done by
> > management server, in the flow in the FS, it is now being done by the
> > source agent.  What's the pros/cons of this change? I see that as an
> > open issue on your spec and I think if we can keep the hosts from
> > establishing contact with each other it will be best.
> > - I like to see the full API speced out.
> >
> > I also like to see Hari's question answered.  Can we provide this with
> > VmWare as well?
> >
> > --Alex
> >
> > > -----Original Message-----
> > > From: Devdeep Singh [mailto:devdeep.singh@citrix.com]
> > > Sent: Tuesday, January 08, 2013 1:58 AM
> > > To: cloudstack-dev@incubator.apache.org
> > > Subject: RE: [DISCUSS] Enabling storage xenmotion on xenserver 6.1
> > >
> > > Hi Swamy,
> > >
> > > In the following scenario when a VM has disks in different
> > > repositories,
> > all
> > > the virtual disks of the VM will be moved to the same destination
> > repository.
> > > Moving individual disks of the VM to different repositories can be
> > > done,
> > but
> > > it'll involve taking inputs from the user as to which disk should be
> > moved to
> > > which repository. What do you think, should this option be also
> provided?
> > >
> > > Regards,
> > > Devdeep
> > >
> > > > -----Original Message-----
> > > > From: Venkata SwamyBabu Budumuru
> > > > [mailto:venkataswamybabu.budumuru@citrix.com]
> > > > Sent: Thursday, December 27, 2012 5:42 PM
> > > > To: cloudstack-dev@incubator.apache.org
> > > > Subject: RE: [DISCUSS] Enabling storage xenmotion on xenserver 6.1
> > > >
> > > > Hi Devdeep,
> > > >
> > > > Does this also cover the following use case ?
> > > >
> > > > VM1 =>      ROOT    (Storage Repository 1)
> > > >     =>      DATA-1  (Storage Repository 2)
> > > >
> > > > Can I migrate DATA-1 vdi alone to a different repository? Or Is
> > > > this
> > feature
> > > > allowing the whole VM (including ROOT and DATA-1) to same
> > > > destination repository?
> > > >
> > > > Thanks,
> > > > SWAMY
> > > > -----Original Message-----
> > > > From: Hari Kannan [mailto:hari.kannan@citrix.com]
> > > > Sent: Thursday, December 27, 2012 2:18 AM
> > > > To: cloudstack-dev@incubator.apache.org
> > > > Subject: RE: [DISCUSS] Enabling storage xenmotion on xenserver 6.1
> > > >
> > > > Hi Devdeep,
> > > >
> > > > Should this discussion be expanded to cover VMware storage
> > > > migration or
> > > a
> > > > different discussion - I wish to see how we can add vSphere as a
> > supported
> > > > platform for this feature..
> > > >
> > > > Hari
> > > >
> > > > -----Original Message-----
> > > > From: Devdeep Singh [mailto:devdeep.singh@citrix.com]
> > > > Sent: Wednesday, December 26, 2012 4:44 AM
> > > > To: cloudstack-dev@incubator.apache.org
> > > > Subject: RE: [DISCUSS] Enabling storage xenmotion on xenserver 6.1
> > > >
> > > > I have created an initial draft of the FS here
> > > >
> > > https://cwiki.apache.org/confluence/display/CLOUDSTACK/Enabling+Stor
> > > ag
> > > e+
> > > > XenMotion+for+XenServer. I'll keep updating it based on discussion
> > > > XenMotion+for+and
> > > > comments.
> > > >
> > > > Regards,
> > > > Devdeep
> > > >
> > > > > -----Original Message-----
> > > > > From: Devdeep Singh [mailto:devdeep.singh@citrix.com]
> > > > > Sent: Tuesday, December 18, 2012 2:10 PM
> > > > > To: cloudstack-dev@incubator.apache.org
> > > > > Subject: [DISCUSS] Enabling storage xenmotion on xenserver 6.1
> > > > >
> > > > > Hi,
> > > > >
> > > > > XenServer introduced support for Storage XenMotion in the latest
> > > > > version (6.1). Storage XenMotion allows VMs to be moved from one
> > > > > host to another, where the VMs are not located on storage shared
> > > > > between the two hosts. It provides the option to live migrate a
> > > > > VM's disks along with the VM itself. It is now possible to
> > > > > migrate a VM from one resource pool to another, or to migrate a
> > > > > VM whose disks are on local storage, or even to migrate a VM's
> > > > > disks from one storage repository to another, all while the VM
> > > > > is running. More information on Storage
> > > > XenMotion can be found at [1].
> > > > >
> > > > > I have filed a jira request [2] to track this feature. I plan to
> > > > > extend the migrate vm cloudstack api call to allow migration of
> > > > > instances across clusters. Do let me know your comments.
> > > > >
> > > > > [1] http://blogs.citrix.com/2012/08/24/storage_xenmotion/
> > > > > [2] https://issues.apache.org/jira/browse/CLOUDSTACK-659
> > > > >
> > > > > Regards,
> > > > > Devdeep
> >
> >

Mime
View raw message