[one-users] Clone images in datastore /w TM_MAD=qcow2

[Ruben S. Montero]

Hi Dimitri,

We are moving the community to the new forum by the end of the week [1].
This last week things are getting even worse with the hosting company...
seems a good time to move on ;)

Anyway  there are two drivers DS and TM. QoW is used for TM when a
persistent image (or master/golden) is cloned to fire a new VM. The
original image is moved to used state and so it won't be deleted.

On the other hand, a DS clone operation creates a completely (read
independent from) the original image. Using QoW for this would be faster,
but we will need more logic to flatten the snapshots when the original is
deleted, and potentially we will end up with multiple snapshot layers that
will degrade performance.

Cheers

Ruben

[1] http://opennebula.org/new-opennebula-community-forum/

On Mon, Feb 23, 2015 at 9:17 PM, Dmitri Chebotarov <dchebota at gmu.edu> wrote:

> I forgot to add that I'm running ONE 4.8.0
>
>
> --
> Thank you,
>
> Dmitri Chebotarov
> VCL Sys Eng, Engineering & Architectural Support, TSD - Ent Servers &
> Messaging
> 223 Aquia Building, Ffx, MSN: 1B5
> Phone: (703) 993-6175 | Fax: (703) 993-3404
>
>
> > On Feb 23, 2015, at 14:52 , Dmitri Chebotarov <dchebota at gmu.edu> wrote:
> >
> > Hi,
> >
> > I'm cloning image within a datastore /w TM_MAD=qcow2.
> > The cloning process is done using 'cp' command, but I thought it should
> be done /w 'qemu-image clone' command. What I'm missing?
> >
> > # onedatastore show 142
> > DATASTORE 142 INFORMATION
> > ID             : 142
> > NAME           : [HOSTED] Data 1
> > USER           : dchebota
> > GROUP          : oneadmin
> > CLUSTER        : -
> > TYPE           : IMAGE
> > DS_MAD         : fs
> > TM_MAD         : qcow2
> > BASE PATH      : /var/lib/one/datastores/142
> > DISK_TYPE      : FILE
> >
> > DATASTORE CAPACITY
> > TOTAL:         : 285G
> > FREE:          : 118.6G
> > USED:          : 227.8G
> > LIMIT:         : -
> >
> > PERMISSIONS
> > OWNER          : um-
> > GROUP          : u--
> > OTHER          : ---
> >
> > DATASTORE TEMPLATE
> > CLONE_TARGET="SYSTEM"
> > DISK_TYPE="FILE"
> > DS_MAD="fs"
> > INFO="Image DS for Hosted VMs"
> > LN_TARGET="NONE"
> > TM_MAD="qcow2"
> > TYPE="IMAGE_DS"
> >
> >
> > --
> > Thank you,
> >
> > Dmitri Chebotarov
> > VCL Sys Eng, Engineering & Architectural Support, TSD - Ent Servers &
> Messaging
> > 223 Aquia Building, Ffx, MSN: 1B5
> > Phone: (703) 993-6175 | Fax: (703) 993-3404
> >
> >
> > _______________________________________________
> > Users mailing list
> > Users at lists.opennebula.org
> > http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>
> _______________________________________________
> Users mailing list
> Users at lists.opennebula.org
> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>



-- 
Ruben S. Montero, PhD
Project co-Lead and Chief Architect
OpenNebula - Flexible Enterprise Cloud Made Simple
www.OpenNebula.org | rsmontero at opennebula.org | @OpenNebula
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.opennebula.org/pipermail/users-opennebula.org/attachments/20150223/3e0c314f/attachment.htm>