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

[Székelyi Szabolcs]

On Thursday 16 September 2010 15.53.07 Székelyi Szabolcs wrote:
> 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.

So is the first bug. :) A bad setting from testing survived in the qemu master 
hook. Attached the updated version.

-- 
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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