[Engine-devel] should we check for active host before activate SD?

[plysan]

Hi Liron:
Thanks for your reply, please see comment below.

2013/8/12 Liron Aravot <laravot at redhat.com>

>
>
> ----- Original Message -----
> > From: "plysan" <plysab at gmail.com>
> > To: engine-devel at ovirt.org
> > Sent: Sunday, August 11, 2013 8:09:19 PM
> > Subject: [Engine-devel] should we check for active host before activate
> SD?
> >
> > Hi all:
> > Currently I get into a situation with a NFS data center which maintained
> both
> > hosts and storage domains.
> > Now if I first activate host then SD, everything works fine. But if I
> > mistakenly first activate SD, the data center gets into a non responsive
> > status, after this if I try to activate a host, it will get into a non
> > operational state, it seems I can't find a way to get the DC running
> again.
> > I think a additional check should be done before activate a SD, and i've
> > uploaded a patch for a solution of this issue:
> http://gerrit.ovirt.org/17940
> > I haven't test with other storage types, but activating a SD need a
> > functioning host, right? correct me if i'm wrong :)
> >
> > Best regards,
> > plysan
> >
>
> Hi plysan,
> which version of oVirt are you using?
>
I'm using the latest build with developer mod

> I'll try to answer to each issue separatly:
> 1. Host doesn't move to "UP" after the following - Some fixes were done to
> avoid such situation from happening - so if you would update that should
> happend.

Do you mean there is already some fix available?

> 2. There's no check for any host being up - if that's missing on the flow,
> it might be added as an improvement, but [1] should get you good to go :)
>
I think engine should not try to connect to SD knowing that there is no
active host, otherwise the action would fail. So the check should be added.
Question is whether there be any situation that SD can be activated
successfully even if there is no 'up' host in storage pool?

>
> Let me know if i could help somehow more
> thanks,
> Liron
> > _______________________________________________
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> > Engine-devel at ovirt.org
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> >
>
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