[one-users] iSCSI one-target-per-vdisk TM driver release (was: Re: What kinds of shared storage are you using?)

[Javier Fontan]

Hello,

Thanks a lot for you effort. I am sure your development will be useful
for lots of users. I think you should apply for an ecosystem account
so these drivers are shown in the ecosystem catalog. You have more
information about this here:

http://opennebula.org/community:ecosystem

Thanks again, bye

2010/9/16 Székelyi Szabolcs <szekelyi at niif.hu>:
> On Friday 03 September 2010 15.13.55 Székelyi Szabolcs wrote:
>> On Friday 03 September 2010 14.54.06 Ignacio M. Llorente wrote:
>> > You could consider to contribute the new driver to our ecosystem
>> > and/or write a post in our blog describing your customization.
>>
>> Our development is sponsored by the state, thus everything we develop will
>> be open sourced, and so, it'd be an honour to contribute this to the
>> OpenNebula ecosystem.
>>
>> This is an ongoing development, and the TM driver is just a small part of
>> it. On the other hand, in our environment it has been quite stable for a
>> couple of weeks now, so I think it's time to do an alpha release.
>>
>> I'll use the weekend to gather all its dependencies, wrap it up and write
>> some docs about it. Expect a release in the beginning of next week.
>
> So finally it's out; please find it attached. Sorry for the delay.
>
> Please note that this is an alpha release, so I'm not sure that this should go
> into the Ecosystem yet, first I'd like to hear a few reports on whether the
> installation procedure worked and if it's complete. So anyone interested,
> please test it!
>
> Thanks,
> --
> cc
>
>
>> > On Fri, Sep 3, 2010 at 1:07 AM, Andreas Ntaflos <daff at pseudoterminal.org>
>>
>> wrote:
>> > > On Friday 03 September 2010 00:28:23 Székelyi Szabolcs wrote:
>> > >> We're using iSCSI targets directly (one target per vm), automatically
>> > >> created and initialized (cloned) from images on vm deploy. Althogh
>> > >> the target is based on IET behind gigabit links, it works quite
>> > >> well: we haven't done performance benchmarks (yet), but the
>> > >> installation time of virtual machines is kinda same than on real
>> > >> hardware.
>> > >
>> > > That sounds interesting and very similar to what we hope to achieve
>> > > using OpenNebula and a central storage server (as I've posted a few
>> > > hours ago, not realising this thread here is very similar in nature).
>> > >
>> > >> We developed a custom TM driver for this, because this approach makes
>> > >> live migration trickier, since just before live migration the target
>> > >> host needs to log in to the iSCSI target hosting the disks of the
>> > >> vm, and this is something ONE can't do, so we used libvirt hooks to
>> > >> do this -- works like a charm. Libvirt hooks are also good for
>> > >> reattaching virtual machines to their virtual networks on live
>> > >> migration -- again something ONE doesn't do.
>> > >
>> > > Would you care to go into a little detail regarding your custom TM
>> > > driver? Maybe even post the sources? I'd be very interested in learning
>> > > more about your approach to this.
>> > >
>> > > Thanks!
>> > >
>> > > Andreas
>> > > --
>> > > Andreas Ntaflos
>> > >
>> > > GPG Fingerprint: 6234 2E8E 5C81 C6CB E5EC  7E65 397C E2A8 090C A9B4
>> > >
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>>
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-- 
Javier Fontan, Grid & Virtualization Technology Engineer/Researcher
DSA Research Group: http://dsa-research.org
Globus GridWay Metascheduler: http://www.GridWay.org
OpenNebula Virtual Infrastructure Engine: http://www.OpenNebula.org