[one-users] Open Nebula unable to delete the snapshot of a VM

[Jaime Melis]

Hi Italo,

it looks like $VG_NAME contains "/images", but it shouldn't be a path,
it should be the name of the volume group that LVM uses to create LVs.

Try changing that to "images", by editing tm_lvmrc.

cheers,
Jaime

On Wed, Sep 1, 2010 at 5:30 PM, Italo Madalozo <italo.madalozo at gmail.com> wrote:
> Hi,
> I have been trying Open Nebula for a  couple of weeks now and so far it
> works great, one of the complex steps of building the cloud is the storage.
> After reading about LVM on the website and then from the mailing list I
> managed to get it working , VG_NAME=/images, and now I can instance many
> virtual machines to the pool within seconds or minutes without having  to
> clone (wasting storage) the images or wasting bandwidth  transferring from
> the front end to the nodes.
> Now the problem I am facing is that the lvm/tm_delete.sh script can't manage
> to delete the snapshots created by lvm/clone.sh. I have tried onevm $ID
> delete,shutdown and cancel as recommended in a previous thread but none of
> them worked.
> This is the log output:
> Wed Sep  1 16:20:47 2010 [InM][I]: Monitoring host 192.168.1.4 (5)
> Wed Sep  1 16:20:47 2010 [VMM][D]: Message received: LOG - 62 Driver command
> for 62 cancelled
> Wed Sep  1 16:20:47 2010 [TM][D]: Message received: LOG - 62 Command
> execution fail: /srv/cloud/one/lib/tm_commands/lvm/tm_delete.sh
> 192.168.1.4:/srv/cloud/one/var/62/images
> Wed Sep  1 16:20:47 2010 [TM][D]: Message received: LOG - 62 STDERR follows.
> Wed Sep  1 16:20:47 2010 [TM][D]: Message received: LOG - 62 ERROR MESSAGE
> --8<------
> Wed Sep  1 16:20:47 2010 [TM][D]: Message received: LOG - 62 "/images":
> Invalid path for Logical Volume
> Wed Sep  1 16:20:47 2010 [TM][D]: Message received: LOG - 62 "/images/":
> Invalid path for Logical Volume
> Wed Sep  1 16:20:47 2010 [TM][D]: Message received: LOG - 62 ERROR MESSAGE
> ------>8--
> Wed Sep  1 16:20:47 2010 [TM][D]: Message received: LOG - 62 ExitCode: 5
> Wed Sep  1 16:20:47 2010 [TM][D]: Message received: LOG - 62 tm_delete.sh:
> Deleting remote LVs
> Wed Sep  1 16:20:47 2010 [TM][D]: Message received: LOG - 62 tm_delete.sh:
> ERROR: Command "ssh 192.168.1.4 sudo lvremove -f $(echo /images/$(sudo lvs
> --noheadings /images|awk '{print $1}'|grep lv-one-62))" failed.
> Wed Sep  1 16:20:47 2010 [TM][D]: Message received: LOG - 62 tm_delete.sh:
> ERROR:   "/images": Invalid path for Logical Volume
> Wed Sep  1 16:20:47 2010 [TM][D]: Message received: LOG - 62 "/images/":
> Invalid path for Logical Volume
> Wed Sep  1 16:20:47 2010 [TM][D]: Message received: TRANSFER FAILURE 62
> "/images": Invalid path for Logical Volume
> Wed Sep  1 16:20:47 2010 [TM][D]: Message received:   "/images/": Invalid
> path for Logical Volume
> Wed Sep  1 16:20:48 2010 [VMM][D]: Message received: CANCEL SUCCESS 62 -
> Wed Sep  1 16:20:51 2010 [InM][D]: Host 5 successfully monitored.
>
> After checking the script tm_delete.sh I see everything is fine , so I don't
> understand why instead of /dev/images one is looking for /images/.
> Italo
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