Thanks, Rob,
I understand that you use PVE and DRBD only for testing and not in
production, right?
Il 02/01/2017 14:53, Michele Rossetti ha scritto:
One advice from who use drbd9 on PVE in production, please: we have a
cluster of 3 PVe 4.3 servers with the last DRBD version available prom
PVE repository.
I read on the list that there are several problems with new DRBD
version,
I have switched to linbit repo, but I don't think that there are more
problems than with pve ones; in my configuration I still have some
issues (with qmrestore towards drbd storage, and automatic start of
resources at boot, mainly), but I can't say that these are new or
specific to linbit provided components.
not more included on PVE repository, but I don't understand if
they are related only with som configuration or with the new changes on
drbdmanage.
See my former notes; in my experience I still have many doubts about
using DRBD9 with PVE in production, even if I have it running for
several months now. In particular I think that PVE DRBD9 storage
integration needs refinements (storage occupation still does not
correctly accounts for redundancy, and lacks features (such as volume
resizing).
So the only alternative seems to use Ceph, which seems more complex
than DRBD and slower on Gigabit networks? (but the wrong show of
storage occupation doesn't seem to me a big problem).
On DRBD9 side, I still note randomly out-of-sync on some resources after
node reboot, which I am able to fix only manually (disconnecting and
reconnecting after some time, and similar ...)
In other words: can we upgrade without problems to PVE 4.4 and to DRBD
last software on Linbit repository, or to PVE 4.4 from Proxmox
repository and to latest DRBD from Linbit repository? Or it's better to
wait some time, to avoid problems on production systems?
I recommend to upgrade to 4.4, firstly. In any case, given that Proxmox
will not provide further support for DRBD9 in PVE, you should consider
the switch to linbit repo in any case, if you want to keep using it in
the future.
To upgrade to 4.4 can I use the Linbit repository? Which address is
to add on apt-get sources.list?
I suppose the Proxmox address is to be removed from list, right?
(This will be a problem for people using PVE enterprise repository,
but it's not my case).
Moreover, it's possible, after the sources.list modification, to use
update button in PVE GUI?
Sorry for my maybe stupid questions...
Certain that if Linbit had not created these difficulties ... I am
afraid that the roads between PVE and DRBD will diverge
completelyover time.
Michele
Thanks and happy New Year,
Same to you,
rob
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