Hi Swen,
+1 for Simon’s comments. I did a fair bit of CLVM POC work a year ago and ended
up concluding it’s just not fit for purpose, it’s too unstable and STONITH was
a challenge to say the least. As you’ve seen from our blog article we have had
a project in the past using OCFS2 – but it is again a challenge to set up and
to get running smoothly + you need to go cherry picking modules which can be
tricky since you are into Oracle territory.
For smooth running I recommend sticking to NFS if you can – if not take a look
at CEPH or gluster, or ScaleIO as Simon suggested.
Regards,
Dag Sonstebo
Cloud Architect
ShapeBlue
On 19/02/2018, 13:45, "Simon Weller" <swel...@ena.com.INVALID> wrote:
So CLVM used to be supported (and probably still works). I'd highly
recommend you avoid using a clustered file system if you can avoid it. See if
your SAN supports the ability to do exclusive locking.
There was chatter on the list a couple of years ago about a scaleio storage
driver, but I'm not sure whether there was any movement on that or not.
- Si
________________________________
From: S. Brüseke - proIO GmbH <s.brues...@proio.com>
Sent: Monday, February 19, 2018 4:57 AM
To: users@cloudstack.apache.org
Subject: KVM with shared storage
Hi @all,
I am evaluating KVM for our Cloudstack installation. We are using XenServer
at the moment. We want to use shared storage so we can do live migration of VMs.
For our KVM hosts I am using CentOS7 with standard kernel as OS and for
shared storage I am evaluating ScaleIO. KVM and ScaleIO installation is working
great and I can map a volume to all KVM hosts.
I end up with a device (dev/scinia) of block storage on all KVM hosts.
As far as I understand I need a cluster filesystem on this device so I can
use it on all KVM hosts simultaneously. So my options are ocfs2, gfs2 and clvm.
As documented clvm is not supported by Cloudstack and therefore not really an
option.
I found this shapeblue howto
(http://www.shapeblue.com/installing-and-configuring-an-ocfs2-clustered-file-system/)
for ocfs2, but this is for CentOS6 and I am unable to find a working ocfs2
module for CentOS7 standard kernel.
[http://www.shapeblue.com/wp-content/uploads/2017/03/Fotolia_51644947_XS-1.jpg]<http://www.shapeblue.com/installing-and-configuring-an-ocfs2-clustered-file-system/>
Installing and Configuring an OCFS2 Clustered File System
...<http://www.shapeblue.com/installing-and-configuring-an-ocfs2-clustered-file-system/>
www.shapeblue.com
Last year we had a project which required us to build out a KVM environment
which used shared storage. Most often that would be NFS all the way and very
occasionally ...
So my question is how are you implementing shared storage with KVM hosts in
your Cloudstack installation if it is not NFS? Thx for your help!
Mit freundlichen Grüßen / With kind regards,
Swen
- proIO GmbH -
Geschäftsführer: Swen Brüseke
Sitz der Gesellschaft: Frankfurt am Main
USt-IdNr. DE 267 075 918
Registergericht: Frankfurt am Main - HRB 86239
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