[one-users] opennebula and lvm

[Tino Vazquez]

Hi Seph,

OpenNebula chooses the TM based on which hosts needs to stage the
image into. This is defined at the time of adding the host to
OpenNebula. Your host seems to be correctly defined to use the lvm tm
driver, so the chosing of tm_clone.sh boils down to what is defined in
$ONE_LOCATION/tm_lvm/tm_lvm.conf.

Hope it helps, please come back if you need further clarifications,

-Tino

--
Constantino Vázquez Blanco | dsa-research.org/tinova
Virtualization Technology Engineer / Researcher
OpenNebula Toolkit | opennebula.org



On Thu, May 27, 2010 at 7:39 PM, seph <seph at directionless.org> wrote:
> Hi all, I'm playing around with opennebula and LVM and having some
> trouble fitting the pieces together. I have a handful of test nodes,
> and I'd like each of them to use their local lvm pools. (I realize
> this makes migration hard).
>
> I'm not really sure where to begin debugging it. I created a kvm image
> using vmbuilder, and a trivial template, and then I created the
> VM. But, opennebula is using tm_commands/ssh/tm_clone.sh and not
> tm_commands/lvm/tm_clone.sh thus I'm winding up with the wrong thing.
>
> My oned.conf:
>
>  HOST_MONITORING_INTERVAL = 60
>  VM_POLLING_INTERVAL      = 60
>  PORT=2633
>  DEBUG_LEVEL=3
>  NETWORK_SIZE = 254
>  MAC_PREFIX   = "00:03"
>  IM_MAD = [ name = "im_kvm", executable = "one_im_ssh", arguments = "im_kvm/im_kvm.conf" ]
>  VM_MAD = [ name = "vmm_kvm", executable = "one_vmm_kvm", default = "vmm_kvm/vmm_kvm.conf", type = "kvm" ]
>  TM_MAD = [ name = "tm_lvm", executable = "one_tm", arguments  = "tm_lvm/tm_lvm.conf" ]
>  HM_MAD = [ executable = "one_hm" ]
>
> My VM template:
>
>  NAME = "TEST"
>  CPU    = "1"
>  MEMORY = "256"
>  VCPU   = "1"
>  DISK = [
>    type     = "block",
>    source   = "/home/seph/testvm/tmpp0wEVF.qcow2",
>    clone    = "no",
>    size     = "4096",
>    target   = "sda",
>    bus      = "virtio" ]
>
> Some onehost info:
>
>  HOST 0 INFORMATION
>  ID                    : 0
>  NAME                  : macbook-test2
>  STATE                 : MONITORED
>  IM_MAD                : im_kvm
>  VM_MAD                : vmm_kvm
>  TM_MAD                : tm_lvm
>
> And some of the oned log from the creation:
> (note the "via ssh" in the second line. That's my instrumentation)
>
>  tm_ln.sh: Link  (non shared dir, will clone)
>  tm_clone.sh: macbook-test2:/home/seph/testvm/tmpp0wEVF.qcow2 macbook-test2:/var/lib/one//14/images/disk.0 (via ssh)
>  tm_clone.sh: DST: /var/lib/one//14/images/disk.0
>  tm_clone.sh: Creating directory /var/lib/one//14/images
>  tm_clone.sh: Executed "ssh macbook-test2 mkdir -p /var/lib/one//14/images".
>  tm_clone.sh: Cloning macbook-test2:/home/seph/testvm/tmpp0wEVF.qcow2
>  tm_clone.sh: Executed "scp macbook-test2:/home/seph/testvm/tmpp0wEVF.qcow2 macbook-test2:/var/lib/one//14/images/disk.0".
>  tm_clone.sh: Executed "ssh macbook-test2 chmod a+w /var/lib/one//14/images/disk.0".
>
> I'm not really sure how opennebula chooses which TM tools to use, so I'm
> not really sure how to debug this. Pointers? Help?
>
> seph
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