This is the actual problem:

bf025a73-eeeb-4ac5-b8a9-32afa4ae482e::DEBUG::2014-04-22 10:21:49,374::volume::1058::Storage.Misc.excCmd::(createVolume) FAILED: <err> = '/rhev/data-center/9497ef2c-8368-4c92-8d61-7f318a90748f/95b9d922-4df7-4d3b-9bca-467e2fd9d573/images/4
66d9ae9-e46a-46f8-9f4b-964d8af0675b/87efa937-b31f-4bb1-aee1-0ee14a0dc6fb: error while creating qcow2: No such file or directory\n'; <rc> = 1

from that you see the actual failure:

bf025a73-eeeb-4ac5-b8a9-32afa4ae482e::ERROR::2014-04-22 10:21:49,392::volume::286::Storage.Volume::(clone) Volume.clone: can't clone: /rhev/data-center/9497ef2c-8368-4c92-8d61-7f318a90748f/95b9d922-4df7-4d3b-9bca-467e2fd9d573/images/466d
9ae9-e46a-46f8-9f4b-964d8af0675b/1a67de4b-aa1c-4436-baca-ca55726d54d7 to /rhev/data-center/9497ef2c-8368-4c92-8d61-7f318a90748f/95b9d922-4df7-4d3b-9bca-467e2fd9d573/images/466d9ae9-e46a-46f8-9f4b-964d8af0675b/87efa937-b31f-4bb1-aee1-0ee1
4a0dc6fb
bf025a73-eeeb-4ac5-b8a9-32afa4ae482e::ERROR::2014-04-22 10:21:49,392::volume::508::Storage.Volume::(create) Unexpected error
Traceback (most recent call last):
  File "/usr/share/vdsm/storage/volume.py", line 466, in create
    srcVolUUID, imgPath, volPath)
  File "/usr/share/vdsm/storage/fileVolume.py", line 160, in _create
    volParent.clone(imgPath, volUUID, volFormat, preallocate)
  File "/usr/share/vdsm/storage/volume.py", line 287, in clone
    raise se.CannotCloneVolume(self.volumePath, dst_path, str(e))
CannotCloneVolume: Cannot clone volume: 'src=/rhev/data-center/9497ef2c-8368-4c92-8d61-7f318a90748f/95b9d922-4df7-4d3b-9bca-467e2fd9d573/images/466d9ae9-e46a-46f8-9f4b-964d8af0675b/1a67de4b-aa1c-4436-baca-ca55726d54d7, dst=/rhev/data-cen
ter/9497ef2c-8368-4c92-8d61-7f318a90748f/95b9d922-4df7-4d3b-9bca-467e2fd9d573/images/466d9ae9-e46a-46f8-9f4b-964d8af0675b/87efa937-b31f-4bb1-aee1-0ee14a0dc6fb: Error creating a new volume: (["Formatting \'/rhev/data-center/9497ef2c-8368-
4c92-8d61-7f318a90748f/95b9d922-4df7-4d3b-9bca-467e2fd9d573/images/466d9ae9-e46a-46f8-9f4b-964d8af0675b/87efa937-b31f-4bb1-aee1-0ee14a0dc6fb\', fmt=qcow2 size=21474836480 backing_file=\'../466d9ae9-e46a-46f8-9f4b-964d8af0675b/1a67de4b-aa
1c-4436-baca-ca55726d54d7\' backing_fmt=\'qcow2\' encryption=off cluster_size=65536 "],)'


do you have any alert in the webadmin to restart the vm?

Dafna

On 04/22/2014 03:31 PM, Steve Dainard wrote:

Sorry for the confusion.

I attempted to take a live snapshot of a running VM. After that failed, I migrated the VM to another host, and attempted the live snapshot again without success, eliminating a single host as the cause of failure.

Ovirt is 3.3.4, storage domain is gluster 3.4.2.1, OS is CentOS 6.5.

Package versions:
libvirt-0.10.2-29.el6_5.5.x86_64
libvirt-lock-sanlock-0.10.2-29.el6_5.5.x86_64
qemu-img-rhev-0.12.1.2-2.415.el6.nux.3.x86_64
qemu-kvm-rhev-0.12.1.2-2.415.el6.nux.3.x86_64
qemu-kvm-rhev-tools-0.12.1.2-2.415.el6.nux.3.x86_64
vdsm-4.13.3-4.el6.x86_64
vdsm-gluster-4.13.3-4.el6.noarch


I made another live snapshot attempt at 10:21 EST today, full vdsm.log attached, and a truncated engine.log.

Thanks,

*Steve
*

On Tue, Apr 22, 2014 at 9:48 AM, Dafna Ron <dron@redhat.com <mailto:dron@redhat.com>> wrote:

    please explain the flow of what you are trying to do, are you
    trying to live migrate the disk (from one storage to another), are
    you trying to migrate the vm and after vm migration is finished
    you try to take a live snapshot of the vm? or are you trying to
    take a live snapshot of the vm during a vm migration from host1 to
    host2?

    Please attach full vdsm logs from any host you are using (if you
    are trying to migrate the vm from host1 to host2) + please attach
    engine log.

    Also, what is the vdsm, libvirt and qemu versions, what ovirt
    version are you using and what is the storage you are using?

    Thanks,

    Dafna




    On 04/22/2014 02:12 PM, Steve Dainard wrote:

        I've attempted migrating the vm to another host and taking a
        snapshot, but I get this error:

        6efd33f4-984c-4513-b5e6-fffdca2e983b::ERROR::2014-04-22
        01:09:37,296::volume::286::Storage.Volume::(clone)
        Volume.clone: can't clone:
        /rhev/data-center/9497ef2c-8368-4c92-8d61-7f318a90748f/95b9d922-4df7-4d3b-9bca-467e2fd9d573/images/466d9ae9-e46a-46f8-9f4b-964d8af0675b/1a67de4b-aa1c-4436-baca-ca55726d54d7
        to
        /rhev/data-center/9497ef2c-8368-4c92-8d61-7f318a90748f/95b9d922-4df7-4d3b-9bca-467e2fd9d573/images/466d9ae9-e46a-46f8-9f4b-964d8af0675b/b230596f-97bc-4532-ba57-5654fa9c6c51

        A bit more of the vdsm log is attached.

        Other vm's are snapshotting without issue.



        Any help appreciated,

        *Steve
        *


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    --     Dafna Ron

--
Dafna Ron