[one-users] Monitoring of a host can fail during a VM shutdown

[Javier Fontan]

This is a bug indeed. It can also fail in other cases like VM crash or
migration.

Open that bug and we will look into it. When you see those crashes it
is safe to open a bug.

On Wed, Dec 11, 2013 at 3:30 PM, Daniel Dehennin
<daniel.dehennin at baby-gnu.org> wrote:
> Hello,
>
> On a ONE 4.2, we just encountered an transiant issue:
>
>     [InM][I]: Monitoring host grichka (9)
>     [InM][I]: Command execution fail: 'if [ -x "/var/tmp/one/im/run_probes" ]; then /var/tmp/one/im/run_probes kvm 9 grichka; else exit 42; fi'
>     [InM][I]: error: failed to get domain 'one-1547'
>     [InM][I]: error: Domain not found: no domain with matching name 'one-1547'
>     [InM][I]: ../../vmm/kvm/poll:70:in `block in get_vm_info': undefined method `[]' for nil:NilClass (NoMethodError)
>     [InM][I]: from ../../vmm/kvm/poll:68:in `each'
>     [InM][I]: from ../../vmm/kvm/poll:68:in `get_vm_info'
>     [InM][I]: from ../../vmm/kvm/poll:35:in `get_all_vm_info'
>     [InM][I]: from ../../vmm/kvm/poll:401:in `print_all_vm_template'
>     [InM][I]: from ../../vmm/kvm/poll:440:in `<main>'
>     [InM][E]: Error executing poll.sh
>     [InM][I]: ExitCode: 1
>     [ONE][E]: Error monitoring Host grichka (9): Error executing poll.sh
>
>
> It looks like something list all the running VM and then call
> “get_vm_info” for each one.
>
> This result in an error if the VM disappears in the meantime, because of
> a shutdown for example.
>
> Is this something plausible, in which case I'll open an issue on the bug
> tracker?
>
> Regards.
>
> --
> Daniel Dehennin
> Récupérer ma clef GPG:
> gpg --keyserver pgp.mit.edu --recv-keys 0x7A6FE2DF
>
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-- 
Javier Fontán Muiños
Developer
OpenNebula - The Open Source Toolkit for Data Center Virtualization
www.OpenNebula.org | @OpenNebula | github.com/jfontan