[ovirt-users] VM Deployment By Template

Punit Dambiwal hypunit at gmail.com
Fri Aug 29 01:25:15 UTC 2014


Hi All,

I read this article...can this help...

https://catn.com/2013/06/03/resize-a-centos-virtual-machine-image/

Thanks,
Punit


On Thu, Aug 28, 2014 at 10:33 PM, Michal Skrivanek <
michal.skrivanek at redhat.com> wrote:

>
> On Aug 27, 2014, at 13:52 , Punit Dambiwal <hypunit at gmail.com> wrote:
>
> > Hi Itamar,
> >
> > It's the same as i used and discussed in last reply...create the VM with
> 1GB virtual template and expand the disk size after deployment...but the
> problem here is disk will expand or resize...but it will not make any
> changes in the existing partition table..that means after expand disk all
> the existing partition will remain same....then you need to manual login in
> to server and make the changes with the help of fdisk and lvm commands..
> >
> > I am looking for the way we can resize the disk...and at the same time
> when the disk will expand...it should be resize the partition table...
> >
> > Is the cloud-init...custom script can do this or not ??
>
> needs to be a custom script specific to the particular guest OS, I suppose.
> something like "lvresize --resizefs …"
> Maybe some rescan of partitions (if the missing piece is indeed the
> missing qemu-ga notification) - then just force it with fdisk
>
> Thanks,
> michal
>
> >
> > Thanks,
> > Punit
> >
> >
> > On Wed, Aug 27, 2014 at 6:11 PM, Itamar Heim <iheim at redhat.com> wrote:
> > On 08/27/2014 12:47 PM, Punit Dambiwal wrote:
> > Hi Itamar,
> >
> > To edit the disk size are you referring this "Another way i got is
> > create the VM with 1GB virtual template and expand the disk size after
> > deployment...but the problem here is disk will expand...but it will not
> > done any changes in the existing partition table..that means after
> > expand disk you need to manual login in to server and make the changes
> > with the help of fdisk and lvm commands..."
> >
> > Or it's different then the upper one...please let me know how to perform
> > this...if any screen shot you can provide for better understanding..
> >
> > http://www.ovirt.org/Features/Online_Virtual_Drive_Resize
> > adding derez for follow up questions
> >
> >
> > Thanks,
> > Punit
> >
> >
> > On Wed, Aug 27, 2014 at 5:15 PM, Itamar Heim <iheim at redhat.com
> > <mailto:iheim at redhat.com>> wrote:
> >
> >     On 08/27/2014 12:08 PM, Punit Dambiwal wrote:
> >
> >         Hi Itamar,
> >
> >         Thanks for the update....Yes.. i want to create different size
> >         VM with
> >         the same OS template...
> >
> >         ------------
> >         3. we support "disk resize" since 3.4 (iirc), which you can do
> >         post VM
> >         provisioning.
> >
> >         considering #3, then #1 should be easy to support as well these
> >         days.
> >         please open an RFE.
> >         ------------
> >
> >         Could you please more elaborate point number 3...how to use
> >         it..i will
> >         go with this one ...
> >
> >
> >     iirc, you just need to edit the disk size when vm is down or up (for
> >     up, only for specific disk interfaces, virtio-blk, not ide, iirc)
> >
> >         Thanks,
> >         Punit
> >
> >
> >         On Wed, Aug 27, 2014 at 4:37 PM, Itamar Heim <iheim at redhat.com
> >         <mailto:iheim at redhat.com>
> >         <mailto:iheim at redhat.com <mailto:iheim at redhat.com>>> wrote:
> >
> >              On 08/27/2014 04:18 AM, Punit Dambiwal wrote:
> >
> >                  Hi Michal,
> >
> >                  I want to deploy the VM with the template but the
> >         problem is in
> >                  ovirt
> >                  when you deploy the VM by template it copy the whole
> >         image(even
> >                  thin or
> >                  thick disk)...like if i have 40GB virtual size (actual
> >         size 1GB)
> >                  disk....it will copy the whole 40GB to provision the
> >         virtual
> >                  machine....so if i want to deploy 10 VM simultaneous
> >         then it
> >                  will copy
> >                  4TB data and take long time to provision....
> >
> >                  I want the way i can make the template with small
> >         size....and once i
> >                  choose to create the virtual machine with 40GB...the VM
> >         deploy
> >                  with the
> >                  small template on the 40GB disk... is it possible with
> >         ovirt.. ??
> >
> >
> >              so you want to provision a VM with a different disk size
> >         than template.
> >              good point. some thoughts:
> >              1. for thinly provisioned (qcow2) - its COW, hence the same
> >         size.
> >              2. for clone - actually, no reason shouldn't be supported
> >         easily.
> >              3. we support "disk resize" since 3.4 (iirc), which you can
> >         do post
> >              VM provisioning.
> >
> >              considering #3, then #1 should be easy to support as well
> these
> >              days. please open an RFE.
> >
> >
> >                  Thanks,
> >                  Punit
> >
> >
> >                  On Tue, Aug 26, 2014 at 9:01 PM, Michal Skrivanek
> >                  <michal.skrivanek at redhat.com
> >         <mailto:michal.skrivanek at redhat.com>
> >                  <mailto:michal.skrivanek at __redhat.com
> >         <mailto:michal.skrivanek at redhat.com>>
> >                  <mailto:michal.skrivanek@
> >         <mailto:michal.skrivanek@>__red__hat.com <http://redhat.com>
> >
> >
> >                  <mailto:michal.skrivanek at __redhat.com
> >         <mailto:michal.skrivanek at redhat.com>>>> wrote:
> >
> >
> >                       On Aug 26, 2014, at 12:01 , Punit Dambiwal
> >                  <hypunit at gmail.com <mailto:hypunit at gmail.com>
> >         <mailto:hypunit at gmail.com <mailto:hypunit at gmail.com>>
> >                       <mailto:hypunit at gmail.com
> >         <mailto:hypunit at gmail.com> <mailto:hypunit at gmail.com
> >         <mailto:hypunit at gmail.com>>>> wrote:
> >
> >                        > Hi Michal,
> >                        >
> >                        > 2. I find disk size can not modify at the time
> >         of VM
> >                       provisioning,is there any way to modify the VM
> >         disk size ??
> >                        >
> >                        > well, not really, AFAIK.
> >                        > create another disk, move your data, remove the
> >         original Or
> >                       create a bigger thin provisioned disk at the
> >         beginning...
> >                        >
> >                        > I didn't understand the mean...i can create the
> >         another
> >                       disk...it's ok...but how to move the data from the
> >         existing
> >                  disk to
> >                       new disk at the time of the VM deployment... ?? is
> >         there
> >                  any way to
> >                       move the data.. ??
> >                       Hi,
> >
> >                       You would have to do that inside the guest…the
> >         same way as
> >                  you would
> >                       do it on real hardware…mount both disks, move the
> >         relevant data
> >                       not trivial and not automated
> >
> >                        >
> >                        > Another question is there any way to mount the
> >         img like
> >                  i will
> >                       create the VM with blank template with my
> >         preferred disk
> >                  size and
> >                       leter on install the OS through any OS template
> >         ??? i know
> >                  i can
> >                       install the OS through CD-ISO but i don't want the
> >         manual
> >                  installation…
> >
> >                       so you want to have a preinstalled OS…so how did
> >         you want
> >                  to use it?
> >                       I probably don't understand what are you trying to
> >         achieve.
> >                       Anything else than having a Template with OS and
> >         you deploy
> >                  VMs from
> >                       that….you need to change disk sizes for each such
> >         VM? Could
> >                  it be
> >                       done by adding an additional disk?
> >
> >                       Thanks,
> >                       michal
> >
> >                        >
> >                        > Thanks,
> >                        > Punit
> >                        >
> >                        >
> >                        > On Tue, Aug 26, 2014 at 5:51 PM, Michal
> Skrivanek
> >                       <michal.skrivanek at redhat.com
> >         <mailto:michal.skrivanek at redhat.com>
> >                  <mailto:michal.skrivanek at __redhat.com
> >         <mailto:michal.skrivanek at redhat.com>>
> >                  <mailto:michal.skrivanek@
> >         <mailto:michal.skrivanek@>__red__hat.com <http://redhat.com>
> >
> >
> >                  <mailto:michal.skrivanek at __redhat.com
> >         <mailto:michal.skrivanek at redhat.com>>>>
> >
> >                       wrote:
> >                        >
> >                        > On Aug 26, 2014, at 05:26 , Punit Dambiwal
> >                  <hypunit at gmail.com <mailto:hypunit at gmail.com>
> >         <mailto:hypunit at gmail.com <mailto:hypunit at gmail.com>>
> >                       <mailto:hypunit at gmail.com
> >         <mailto:hypunit at gmail.com> <mailto:hypunit at gmail.com
> >         <mailto:hypunit at gmail.com>>>> wrote:
> >                        >
> >                        > > Hi All,
> >                        > >
> >                        > > I have some questions regarding the VM
> deployment
> >                  through OS
> >                       template...
> >                        > >
> >                        > > 1. I have imported centos template from
> openstack
> >                  glance (the
> >                       actual size of the template is 16GB but used is
> >         1GB)...now my
> >                       question is if i deploy the new VM with this
> >         template,the
> >                  process
> >                       will copy the whole 16GB or just 1 GB to create
> >         the new VM ??
> >                        >
> >                        > if you deploy with thin provisioned disks it
> >         should be 1GB
> >                        >
> >                        > >
> >                        > > 2. I find disk size can not modify at the
> >         time of VM
> >                       provisioning,is there any way to modify the VM
> >         disk size ??
> >                        >
> >                        > well, not really, AFAIK.
> >                        > create another disk, move your data, remove the
> >         original.
> >                        > Or create a bigger thin provisioned disk at the
> >         beginning
> >                        >
> >                        > >
> >                        > > Thanks,
> >                        > > Punit
> >                        > >
> >                        > >
> >                        > > On Mon, Aug 25, 2014 at 5:42 PM, Punit
> Dambiwal
> >                       <hypunit at gmail.com <mailto:hypunit at gmail.com>
> >         <mailto:hypunit at gmail.com <mailto:hypunit at gmail.com>>
> >                  <mailto:hypunit at gmail.com <mailto:hypunit at gmail.com>
> >
> >         <mailto:hypunit at gmail.com <mailto:hypunit at gmail.com>>>> wrote:
> >                        > > Hi All,
> >                        > >
> >                        > > I have some questions regarding the VM
> deployment
> >                  through OS
> >                       template...
> >                        > >
> >                        > > 1. I have imported centos template from
> openstack
> >                  glance (the
> >                       actual size of the template is 16GB but used is
> >         1GB)...now my
> >                       question is if i deploy the new VM with this
> >         template,the
> >                  process
> >                       will copy the whole 16GB or just 1 GB to create
> >         the new VM ??
> >                        > >
> >                        > > 2. I find disk size can not modify at the
> >         time of VM
> >                       provisioning,is there any way to modify the VM
> >         disk size ??
> >                        > >
> >                        > > Thanks,
> >                        > > Punit
> >                        > >
> >                        >
> >                        >
> >
> >
> >
> >
> >
> >
> >
> >
>
>
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