[one-users] system datastores always have no space
Marius Rex
MariusRex at venda.com
Fri May 9 14:55:45 PDT 2014
I am not sure I follow what you are trying to say. What is the source
of my problem?
All of my datastores, which live on the same NFS mount, exist on the the
monitored host. They are mounted in /var/lib/one, which matches the
BASE PATH for the datastore. So I do not know how the NFS mount is not
'properly mounted.'
The output I get from the command you specify is:
[root at kvm04 ~]# /var/tmp/one/im/kvm-probes.d/monitor_ds.sh
kvm /var/lib/one/datastores
DS_LOCATION_USED_MB=1
DS_LOCATION_TOTAL_MB=1409258
DS_LOCATION_FREE_MB=1408682
So it looks the probe is finding available space. But according to the
output of 'onedatastore' there is no available space. Thus no VMs can
be created on my KVM host/node.
I am not sure what step or procedure I am missing. I do not see
anything in
http://docs.opennebula.org/4.6/design_and_installation/quick_starts/qs_centos_kvm.html that I have skipped.
Does it matter that the KVM node already has VMs running on it?
Otherwise the node fits the guide above precisely. The plan is to put
everything under OpenNebula management. But since the system DS reports
having no space, I cannot launch a single VM, and thus will not be able
to spin any of those machines down to bring them up under OpenNebula
management.
-Marius
On Fri, 2014-05-09 at 15:35 -0400, Ruben S. Montero wrote:
>
> On Fri, May 9, 2014 at 3:43 PM, Marius Rex <MariusRex at venda.com>
> wrote:
>
> The system DS is not supposed to show up with any space until
> a host is
> configured? That is a surprising because the pre-configured
> sandbox
> instance I downloaded first for testing (a Virtualbox
> instance) has
> space listed in the system DS even though that has no hosts
> connected to
> it.
>
>
> I'm not sure about the sandbox configuration (e.g. there were some
> data from the setup). Anyway, system DS is monitored from the hosts.
> Note that System DS is not need (not even accessible for some storage
> backends) in the front-end, so the space is reported by the hosts.
> Also System DS is used to run VMs from it, and mainly used in the
> hosts.
>
>
>
> In any case, there are no hosts connected to the test instance
> that I
> gave the example on, but on some other instances which I have
> configured
> elsewhere do have hosts configured and they have the same
> problem. I
> have /var/lib/one as a NFS mount that is mounted on both the
> frontend
> and the node. That instance comes up with no space in the
> system DS as
> well.
>
>
> This may be a problem with the configuration or the sytem DS not
> properly mounted in the hosts. The information is obtained
> with /var/tmp/one/im/kvm-probes.d, go to the host kvm04 and execute:
>
>
> /var/tmp/one/im/kvm-probes.d/monitor_ds.sh
> kvm /var/lib/one/datastores/
>
>
> The output should be similar to...
>
>
> DS_LOCATION_USED_MB=1
> DS_LOCATION_TOTAL_MB=9952
> DS_LOCATION_FREE_MB=6318
> DS = [
> ID = 101,
> USED_MB = 1,
> TOTAL_MB = 9952,
> FREE_MB = 6318
> ]
>
>
>
> Here is some output from that showing the system DS with no
> space even
> though the logs say the node is successfully monitored:
> http://pastebin.com/w6Wg909Y
>
>
> -Marius
> mariusrex at venda.com
>
>
> On Fri, 2014-05-09 at 05:05 -0400, Carlos Martín Sánchez
> wrote:
> > Hi,
> >
> >
> > System DS are monitored with the host probes. Do you have
> any hosts
> > configured?
> >
> > --
> > Carlos Martín, MSc
> > Project Engineer
> > OpenNebula - Flexible Enterprise Cloud Made Simple
> > www.OpenNebula.org | cmartin at opennebula.org | @OpenNebula
> >
> >
> > On Fri, May 9, 2014 at 12:02 AM, Marius Rex
> <MariusRex at venda.com>
> > wrote:
> > Platform: Centos 6.5
> > versions: opennebula-4.5.80 and opennebula-4.6.0-1
> >
> > I have been struggling with this for a while with
> various
> > configurations
> > and I continually run into the same problem.
> >
> > I cannot build out a VM as the system volumes always
> come up
> > with no
> > space. I have been trying to reduce variables and
> now at a
> > very basic
> > setup: I installed a fresh Centos 6 server and
> pulled down the
> > latest
> > stable opennebula RPMs from the official repo. I am
> just
> > using local
> > file systems for everything, and have done nothing
> beyond
> > installing the
> > RPM and starting opennebula. My system volume comes
> up with
> > no
> > available room, seemingly no matter what I do.
> >
> >
> > [oneadmin at trainging ~]$ onedatastore
> > list
> > ID NAME SIZE AVAIL CLUSTER
> IMAGES TYPE
> > DS
> > TM
> > 0 system 0M - -
> 0 sys -
> > shared
> > 1 default 6.6G 77% -
> 0 img
> > fs
> > shared
> > 2 files 6.6G 77% -
> 0 fil
> > fs
> > ssh
> >
> >
> >
> > [oneadmin at trainging ~]$ onedatastore show 0
> > DATASTORE 0
> > INFORMATION
> > ID :
> > 0
> > NAME :
> > system
> > USER : oneadmin
> > GROUP : oneadmin
> > CLUSTER : -
> > TYPE : SYSTEM
> > DS_MAD : -
> > TM_MAD : shared
> > BASE PATH : /var/lib/one//datastores/0
> > DISK_TYPE : FILE
> >
> > DATASTORE
> > CAPACITY
> > TOTAL: : 0M
> > FREE: : 0M
> > USED: : 0M
> > LIMIT: : -
> >
> > PERMISSIONS
> > OWNER : um-
> > GROUP : u--
> > OTHER : ---
> >
> > DATASTORE
> > TEMPLATE
> > BASE_PATH="/var/lib/one//datastores/"
> > SHARED="YES"
> > TM_MAD="shared"
> > TYPE="SYSTEM_DS"
> >
> > IMAGES
> >
> > It is the same filesystem the other volumes are on,
> yet they
> > have
> > available space. I have tried two different
> versions of
> > OpenNebula. I
> > have tried different base filesystems. I have
> tried custom
> > RPMs. It
> > comes up the same every time.
> >
> > Is there a bug or am I missing something very
> obvious?
> >
> >
> > --
> > Marius Rex
> > mariusrex at venda.com
> > _______________________________________________
> > Users mailing list
> > Users at lists.opennebula.org
> >
> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>
>
>
> _______________________________________________
> Users mailing list
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>
>
>
>
> --
> --
>
> Ruben S. Montero, PhD
> Project co-Lead and Chief Architect
> OpenNebula - Flexible Enterprise Cloud Made Simple
> www.OpenNebula.org | rsmontero at opennebula.org | @OpenNebula
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