[pve-devel] DRBD9 test packages for jessie

[Daniel Hunsaker]

I'd rather it run the resync before continuing the migration, than simply
abort.  It'll take a bit longer to migrate, but I can't think of any reason
it would make sense *not* to run the resync at that point and simply keep
going once that's done.

On Fri, Mar 20, 2015, 13:30 Cesar Peschiera <brain at click.com.py> wrote:

> It is fantastic !!!
>
> Talking about of DRBD, for now, and if is possibe, i would like to order a
> features:
>
> 1- While a VM is running with LVM on top of DRBD, the replicate storages be
> in secondary mode, ie, only to have a primary storage for each VM that is
> running (that always was the recommendation of LINBIT for security
> reasons).
>
> 2- And when i apply a live migration of a VM, the DRBD plugin first see if
> the replicated storage is perfectly synchronized (in terms of drbd "oos"
> that mean: "out of sync"), and if really are perfectly synchronized, the
> plugin converts the secondary storage in primary for after apply the live
> migration, and after of a live migration successfully, finally convert the
> old primary storage in secondary. Of this mode, always we have a primary
> storage in execution for each VM.
>
> 3- But if we have the case of "oos", the plugin don't accept the live
> migration, and a error message appear in the screen.
>
> About of the verification of replicated storages in DRBD:
> 4- As DRBD has a command that do a verification of data and metadata of the
> replicated storages, will be fantastic have it  in the schedule of the
> PVE-GUI.
>
> About of do a resynchronization if a storage is in "oos":
> 5- As DRBD has a set of commands for do a resynchronization (applied only
> to
> the blocks of disk that are different and not for the complet storage),
> also
> will be good have it in the PVE-GUI.
>
>
> ----- Original Message -----
> From: "Dietmar Maurer" <dietmar at proxmox.com>
> To: "Cesar Peschiera" <brain at click.com.py>; "PVE Development List"
> <pve-devel at pve.proxmox.com>
> Sent: Friday, March 20, 2015 2:00 PM
> Subject: Re: [pve-devel] DRBD9 test packages for jessie
>
>
> >I just want to note that the new DRBD9 has some cool feature
> >
> > - support more that 2 nodes
> > - support snapshots
> > - as fast as DRBD 8.X
> >
> > I am now writing a storage plugin, so that we can do further tests...
> >
> >> Oh, OK, sorry
> >>
> >> >> DRBD9 isn't ready for his use in a production environment, now is in
> >> >> pre-release phase...
> >> >> http://www.linbit.com/en/component/phocadownload/category/5-drbd
> >> >>
> >> >> Respectfully I mean that I believe that will be good wait to that
> >> >> DRBD9
> >> >> be
> >> >> in a stable version before of release it in the pve repositories.
> >> >
> >> > That is why I compiled it for jessie, and uploaded to the jessie test
> >> > repository.
> >> >
> >>
> >>
> >
>
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