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Gerald Brandt schrieb:
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----- Original Message -----
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<blockquote type="cite"><pre wrap="">From: "Kurt Bauer" <a class="moz-txt-link-rfc2396E" href="mailto:kurt.bauer@univie.ac.at"><kurt.bauer@univie.ac.at></a>
To: "Gerald Brandt" <a class="moz-txt-link-rfc2396E" href="mailto:gbr@majentis.com"><gbr@majentis.com></a>
Cc: <a class="moz-txt-link-abbreviated" href="mailto:pve-user@pve.proxmox.com">pve-user@pve.proxmox.com</a>
Sent: Thursday, October 24, 2013 9:18:58 AM
Subject: Re: [PVE-User] Moving from XenServer to Proxmox... slowly
Gerald Brandt schrieb:
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<blockquote type="cite"><blockquote type="cite"><pre wrap="">Any performance issues?
</pre></blockquote><pre wrap="">In which regard?
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Noticable slowdowns/or speed ups on disk IO or memory, etc?</pre>
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You mean going from XEN PVM to Proxmox, ie. KVM?<br>
Hmm, to be honest we haven't done any speed <span>or perfomance </span>tests,
comparing the two. And besides changing the virtualisation
infrastructure, we also changed the storage infrastructure (from local
LVM to ceph) and all in all we didn't see any degradation of
performance, although this is more of a gut feeling than something I can
proof with figures and numbers.<br>
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<blockquote type="cite"><blockquote type="cite"><pre wrap="">Gerald
----- Original Message -----
</pre><blockquote type="cite"><pre wrap="">From: "Kurt Bauer" <a class="moz-txt-link-rfc2396E" href="mailto:kurt.bauer@univie.ac.at"><kurt.bauer@univie.ac.at></a>
To: "Gerald Brandt" <a class="moz-txt-link-rfc2396E" href="mailto:gbr@majentis.com"><gbr@majentis.com></a>
Cc: <a class="moz-txt-link-abbreviated" href="mailto:pve-user@pve.proxmox.com">pve-user@pve.proxmox.com</a>
Sent: Thursday, October 24, 2013 8:42:54 AM
Subject: Re: [PVE-User] Moving from XenServer to Proxmox... slowly
Hi,
we did pretty much the same thing over the past weeks, ie.
changing
fom
XEN to KVM (Proxmox) reusing the hardware already in place and
production. But we didn't went down the 2-Node cluster road, what
we
did
instead was, that we used an old server machine as a third node,
just
for the sake of quorum and not having to deal with all the
problems,
that may occur on a 2-Node cluster. No guests on that machine and
as
soon as the 3rd production machine was free, we added it to the
cluster
and removed the old one.
I guess performance is not an issue for that 3rd machine, as long
as
it
has no guests.
Hope that helps a little,
best regards,
Kurt
Gerald Brandt schrieb:
</pre><blockquote type="cite"><pre wrap="">Hi,
We've pretty much made the decision to move from Citrix XenServer
to KVM (Proxmox) for our Virtual solution. Unfortunately, I
don't
have all the computers available to me at the start, since
migration will use the existing XenServer computers.
To start, I'll have two servers, using a single iSCSI, in an HA
cluster. Once they are running and some of the virtual machines
are migrated, I can add a third server. Finally, I can add the
fourth server.
Is there anything I need to look out for when creating the 2
server
HA cluster and then converting it to a 3 and 4 node cluster?
Has anyone done this, and created a HOWTO I can follow?
Thanks,
Gerald
ps: Been using Citrix XenServer since Jan 2009. We've had enough
issues with VM disk corruption to haunt me for year (using
LVMoveriSCSI). It's a bloody house of cards.
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