[Users] host goes to non-operational because interface down message

[Mark Wu]

Gianluca,

Thanks for your so detailed report.  But unfortunately I can't find any 
clue related to
this network interface status problem.  Sorry for that. Maybe other guy 
can add more comments.

At this moment, I suspect  the link of em1.311 and probably its 
underlying interface em1 went down occasionally and came up in a
short time.  Is it possible?   You could check the system log 
'/var/log/messages' to find related  messages.


> Thanks for your input Mark.
> At the moment all is well again with the host; anyway I'm going to
> give a long explanation of what I did below and so possible reasons
> for that situation.
> There is also feed for developers answers in that ...
>
> I cannot connect at the moment to the host to cut and paste in text
> but I have access to java console and here is a screenshot containing
> the line you requested (captured now that all is ok and host up and
> runnign with two VMs):
>
> https://docs.google.com/file/d/0BwoPbcrMv8mvdmdIMUxTRVRVUzg/edit?usp=sharing
>
> Which fields are expected to be indicators of problems, as I had yesterday?
You can check the 'state' filed in each interface.
>
>
> The story:
>
> oVirt is 3.2.1
> - create a datacenter of type local_on_host
> - create a cluster
> - the ovirtmgmt is intended to be vlan tagged but I forget it... damn...
> - I add a host (f18) where I prepared network configured with vlan
>
> ifcfg-em1
> ifcfg-em1.311
>
> - the host deploy completes successfully --> here in my opinion a
> possible bug because ovirtmgmt is not tagged?
> - host reboots and apparently all is ok
> - I can create local_on_host SD and ISO
> - all is up and running without any VM yet
>
> The host is a blade inside an IMS enclosure and I discover that
> actually I can configure the storage assigned (second disk of the
> blade) as FC and that there is also multipath for this kind of servers
> (see the other thread of mine).
>
> The optimal would be to deactivate all and redefine the DC as
> Fibrechannel type but it seems not so easy....
>
> I probably make an error at this point because instead of directly
> putting host into maintenance I follow these steps in the gui:
> - expand my DC at the left
> - expand STORAGE of that DC on the left
> - select my storage domain (LSTORAGE) on the left
>
> On the right pane  I select the line of LSTORAGE and in the bottom
> pane I select the "datacenter" label where I then select the line of
> my DC.
> I choose "maintenance"
>
> --> what is it supposed I have done this way?
> Put storage domain in maintenance or DC or what?
>
> Is it supposed to be a correct operation what I've done if the DC is
> Up and this is the only SD I have?
> Or would it be correct to receive an error from the system?
>
> Because I don't receive any error and I see the SD down and host that
> keeps staying with the status "Preparing to maintenance"
>
> I don't remember correctly my steps here, possibly restart of host
> that is recognized then as unassigned.
> After that I cannot "force remove" the DC and I cannot remove the
> cluster or host because it is not in maintenance.
>
> After I also reboot the engine service and restart  the host, it comes
> up normally with all the DC with the old config.
> At this point I can put host in maintenance and force remove the DC
> I create a new DC with same name but with type FC and ovirtmgmt as
> vlan tagged and I see that the existing cluster is still present, so I
> attach it to the new DC (that has the same name as before).
> I also find that there is my host that seems to automatically be in
> this cluster.
>
> But at this point when I activate it, it comes up but after a few
> minutes I get the message I posted at the beginning
> In host details, its network interfaces keep down.
> Tried different restarts of host.
> So I decide to put host into maintenance and select into the gui to
> "reinstall" it.
> After this all goes well again..
>
> Sorry for the long story
>
> Gianluca
>
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