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Posted to users@cloudstack.apache.org by Engelmann Florian <fl...@everyware.ch> on 2017/04/04 09:13:02 UTC
KVM + CLVM and Snapshots
Hi,
as the cloudstack documentation explains CLVM is not supported with Cloudstack:
"The use of the Cluster Logical Volume Manager (CLVM) for KVM is not officially supported with CloudStack."
http://docs.cloudstack.apache.org/projects/cloudstack-installation/en/4.9/storage_setup.html
We would like to change our hypervisor from Xenserver to KVM but we have no idea how to use ScaleIO with KVM without using CLVM?
The question is - why isn't CLVM supported? Is it because of snapshots are not allowed on clustered VGs?
Any idea how to use ScaleIO with KVM as shared storage?
All the best,
Florian
EveryWare AG
Florian Engelmann
Systems Engineer
Zurlindenstrasse 52a
CH-8003 Zürich
T +41 44 466 60 00
F +41 44 466 60 10
florian.engelmann@everyware.ch
www.everyware.ch
Re: KVM + CLVM and Snapshots
Posted by Simon Weller <sw...@ena.com>.
We run Ceph and we've been very happy with it.
________________________________
From: Engelmann Florian <fl...@everyware.ch>
Sent: Tuesday, April 4, 2017 10:28 AM
To: users@cloudstack.apache.org
Subject: Re: KVM + CLVM and Snapshots
Hi,
thank you both for your feedback! So we will drop CLVM from our test matrix.
A ScaleIO driver would be the perfect solution but I guess that won't happen... to time consuming :(
Ceph looks promising right now - less performance as ScaleIO but well supported and integrated in ACS.
All the best,
Florian
________________________________________
From: Simon Weller <sw...@ena.com>
Sent: Tuesday, April 4, 2017 4:17 PM
To: users@cloudstack.apache.org
Subject: Re: KVM + CLVM and Snapshots
Florian,
It does work, but can be challenging when it comes to stability. We still have 2 zones build with CLVM and we're activity migrating away from it. The major problem is that it complicates host configurations and you really need a quorum disk in order to fence correctly. It's very sensitive to load on the hosts and that can cause unexpected fencing activity and hence an unstable cluster.
Are you able to export scalio storage via NFS? Your other option is to build a storage driver in CloudStack that can control the storage access via APIs, rather than rely on an CLVM overlay. If you are a paying customer of EMCs, you should reach out to them and see if they would consider writing a storage plugin for you.
Your other option is to work with one of the professional services organizations associated with ACS to write the driver for you (Cloudops, Shapeblue et al).
- Si
________________________________
From: Engelmann Florian <fl...@everyware.ch>
Sent: Tuesday, April 4, 2017 4:13 AM
To: users@cloudstack.apache.org
Subject: KVM + CLVM and Snapshots
Hi,
as the cloudstack documentation explains CLVM is not supported with Cloudstack:
"The use of the Cluster Logical Volume Manager (CLVM) for KVM is not officially supported with CloudStack."
http://docs.cloudstack.apache.org/projects/cloudstack-installation/en/4.9/storage_setup.html
Storage Setup — Apache CloudStack Installation ...<http://docs.cloudstack.apache.org/projects/cloudstack-installation/en/4.9/storage_setup.html>
docs.cloudstack.apache.org
Primary Storage¶ CloudStack is designed to work with a wide variety of commodity and enterprise-rated storage systems. CloudStack can also leverage the local disks ...
We would like to change our hypervisor from Xenserver to KVM but we have no idea how to use ScaleIO with KVM without using CLVM?
The question is - why isn't CLVM supported? Is it because of snapshots are not allowed on clustered VGs?
Any idea how to use ScaleIO with KVM as shared storage?
All the best,
Florian
EveryWare AG
Florian Engelmann
Systems Engineer
Zurlindenstrasse 52a
CH-8003 Zürich
T +41 44 466 60 00
F +41 44 466 60 10
florian.engelmann@everyware.ch
www.everyware.ch<http://www.everyware.ch>
EveryWare: Cloud- & IT-Services | IT-Outsourcing<http://www.everyware.ch/>
www.everyware.ch<http://www.everyware.ch>
Ihr Schweizer IT-Service Provider - Cloud, Hosting, Datacenter, Internet, Netzwerk, Managed IT-Services, IT-Outsourcing. Business IT-Lösungen von EveryWare.
Re: KVM + CLVM and Snapshots
Posted by Yura Poltoratskiy <yu...@gmail.com>.
Hi,
As for me personally, I also want to use ScaleIO as a storage (with Ceph
I have bad performance) and have decided to switch to OpenStack just
because there is a native support ScaleIO there.
04.04.2017 18:28, Engelmann Florian \u043f\u0438\u0448\u0435\u0442:
> Hi,
>
> thank you both for your feedback! So we will drop CLVM from our test matrix.
>
> A ScaleIO driver would be the perfect solution but I guess that won't happen... to time consuming :(
>
> Ceph looks promising right now - less performance as ScaleIO but well supported and integrated in ACS.
>
> All the best,
> Florian
>
> ________________________________________
> From: Simon Weller <sw...@ena.com>
> Sent: Tuesday, April 4, 2017 4:17 PM
> To: users@cloudstack.apache.org
> Subject: Re: KVM + CLVM and Snapshots
>
> Florian,
>
>
> It does work, but can be challenging when it comes to stability. We still have 2 zones build with CLVM and we're activity migrating away from it. The major problem is that it complicates host configurations and you really need a quorum disk in order to fence correctly. It's very sensitive to load on the hosts and that can cause unexpected fencing activity and hence an unstable cluster.
>
>
> Are you able to export scalio storage via NFS? Your other option is to build a storage driver in CloudStack that can control the storage access via APIs, rather than rely on an CLVM overlay. If you are a paying customer of EMCs, you should reach out to them and see if they would consider writing a storage plugin for you.
>
>
> Your other option is to work with one of the professional services organizations associated with ACS to write the driver for you (Cloudops, Shapeblue et al).
>
>
> - Si
>
> ________________________________
> From: Engelmann Florian <fl...@everyware.ch>
> Sent: Tuesday, April 4, 2017 4:13 AM
> To: users@cloudstack.apache.org
> Subject: KVM + CLVM and Snapshots
>
> Hi,
>
> as the cloudstack documentation explains CLVM is not supported with Cloudstack:
>
> "The use of the Cluster Logical Volume Manager (CLVM) for KVM is not officially supported with CloudStack."
>
> http://docs.cloudstack.apache.org/projects/cloudstack-installation/en/4.9/storage_setup.html
> Storage Setup \u2014 Apache CloudStack Installation ...<http://docs.cloudstack.apache.org/projects/cloudstack-installation/en/4.9/storage_setup.html>
> docs.cloudstack.apache.org
> Primary Storage� CloudStack is designed to work with a wide variety of commodity and enterprise-rated storage systems. CloudStack can also leverage the local disks ...
>
>
>
>
> We would like to change our hypervisor from Xenserver to KVM but we have no idea how to use ScaleIO with KVM without using CLVM?
>
> The question is - why isn't CLVM supported? Is it because of snapshots are not allowed on clustered VGs?
>
> Any idea how to use ScaleIO with KVM as shared storage?
>
> All the best,
> Florian
>
> EveryWare AG
> Florian Engelmann
> Systems Engineer
> Zurlindenstrasse 52a
> CH-8003 Z�rich
>
> T +41 44 466 60 00
> F +41 44 466 60 10
>
> florian.engelmann@everyware.ch
> www.everyware.ch<http://www.everyware.ch>
> EveryWare: Cloud- & IT-Services | IT-Outsourcing<http://www.everyware.ch/>
> www.everyware.ch
> Ihr Schweizer IT-Service Provider - Cloud, Hosting, Datacenter, Internet, Netzwerk, Managed IT-Services, IT-Outsourcing. Business IT-L�sungen von EveryWare.
>
>
>
Re: KVM + CLVM and Snapshots
Posted by Engelmann Florian <fl...@everyware.ch>.
Hi,
thank you both for your feedback! So we will drop CLVM from our test matrix.
A ScaleIO driver would be the perfect solution but I guess that won't happen... to time consuming :(
Ceph looks promising right now - less performance as ScaleIO but well supported and integrated in ACS.
All the best,
Florian
________________________________________
From: Simon Weller <sw...@ena.com>
Sent: Tuesday, April 4, 2017 4:17 PM
To: users@cloudstack.apache.org
Subject: Re: KVM + CLVM and Snapshots
Florian,
It does work, but can be challenging when it comes to stability. We still have 2 zones build with CLVM and we're activity migrating away from it. The major problem is that it complicates host configurations and you really need a quorum disk in order to fence correctly. It's very sensitive to load on the hosts and that can cause unexpected fencing activity and hence an unstable cluster.
Are you able to export scalio storage via NFS? Your other option is to build a storage driver in CloudStack that can control the storage access via APIs, rather than rely on an CLVM overlay. If you are a paying customer of EMCs, you should reach out to them and see if they would consider writing a storage plugin for you.
Your other option is to work with one of the professional services organizations associated with ACS to write the driver for you (Cloudops, Shapeblue et al).
- Si
________________________________
From: Engelmann Florian <fl...@everyware.ch>
Sent: Tuesday, April 4, 2017 4:13 AM
To: users@cloudstack.apache.org
Subject: KVM + CLVM and Snapshots
Hi,
as the cloudstack documentation explains CLVM is not supported with Cloudstack:
"The use of the Cluster Logical Volume Manager (CLVM) for KVM is not officially supported with CloudStack."
http://docs.cloudstack.apache.org/projects/cloudstack-installation/en/4.9/storage_setup.html
Storage Setup — Apache CloudStack Installation ...<http://docs.cloudstack.apache.org/projects/cloudstack-installation/en/4.9/storage_setup.html>
docs.cloudstack.apache.org
Primary Storage¶ CloudStack is designed to work with a wide variety of commodity and enterprise-rated storage systems. CloudStack can also leverage the local disks ...
We would like to change our hypervisor from Xenserver to KVM but we have no idea how to use ScaleIO with KVM without using CLVM?
The question is - why isn't CLVM supported? Is it because of snapshots are not allowed on clustered VGs?
Any idea how to use ScaleIO with KVM as shared storage?
All the best,
Florian
EveryWare AG
Florian Engelmann
Systems Engineer
Zurlindenstrasse 52a
CH-8003 Zürich
T +41 44 466 60 00
F +41 44 466 60 10
florian.engelmann@everyware.ch
www.everyware.ch<http://www.everyware.ch>
EveryWare: Cloud- & IT-Services | IT-Outsourcing<http://www.everyware.ch/>
www.everyware.ch
Ihr Schweizer IT-Service Provider - Cloud, Hosting, Datacenter, Internet, Netzwerk, Managed IT-Services, IT-Outsourcing. Business IT-Lösungen von EveryWare.
Re: KVM + CLVM and Snapshots
Posted by Simon Weller <sw...@ena.com>.
Florian,
It does work, but can be challenging when it comes to stability. We still have 2 zones build with CLVM and we're activity migrating away from it. The major problem is that it complicates host configurations and you really need a quorum disk in order to fence correctly. It's very sensitive to load on the hosts and that can cause unexpected fencing activity and hence an unstable cluster.
Are you able to export scalio storage via NFS? Your other option is to build a storage driver in CloudStack that can control the storage access via APIs, rather than rely on an CLVM overlay. If you are a paying customer of EMCs, you should reach out to them and see if they would consider writing a storage plugin for you.
Your other option is to work with one of the professional services organizations associated with ACS to write the driver for you (Cloudops, Shapeblue et al).
- Si
________________________________
From: Engelmann Florian <fl...@everyware.ch>
Sent: Tuesday, April 4, 2017 4:13 AM
To: users@cloudstack.apache.org
Subject: KVM + CLVM and Snapshots
Hi,
as the cloudstack documentation explains CLVM is not supported with Cloudstack:
"The use of the Cluster Logical Volume Manager (CLVM) for KVM is not officially supported with CloudStack."
http://docs.cloudstack.apache.org/projects/cloudstack-installation/en/4.9/storage_setup.html
Storage Setup — Apache CloudStack Installation ...<http://docs.cloudstack.apache.org/projects/cloudstack-installation/en/4.9/storage_setup.html>
docs.cloudstack.apache.org
Primary Storage¶ CloudStack is designed to work with a wide variety of commodity and enterprise-rated storage systems. CloudStack can also leverage the local disks ...
We would like to change our hypervisor from Xenserver to KVM but we have no idea how to use ScaleIO with KVM without using CLVM?
The question is - why isn't CLVM supported? Is it because of snapshots are not allowed on clustered VGs?
Any idea how to use ScaleIO with KVM as shared storage?
All the best,
Florian
EveryWare AG
Florian Engelmann
Systems Engineer
Zurlindenstrasse 52a
CH-8003 Zürich
T +41 44 466 60 00
F +41 44 466 60 10
florian.engelmann@everyware.ch
www.everyware.ch<http://www.everyware.ch>
EveryWare: Cloud- & IT-Services | IT-Outsourcing<http://www.everyware.ch/>
www.everyware.ch
Ihr Schweizer IT-Service Provider - Cloud, Hosting, Datacenter, Internet, Netzwerk, Managed IT-Services, IT-Outsourcing. Business IT-Lösungen von EveryWare.
Re: KVM + CLVM and Snapshots
Posted by Dag Sonstebo <Da...@shapeblue.com>.
Hi Florian,
I’ve spent quite a bit of time getting CLVM to work with KVM (in this case on CentOS6+7) – and my experience is it’s not fit for purpose, suffering a lot of stability issues. I do know there are others in the community who may have got this to work in the past, so interested to hear other people’s experiences.
Wrt ScaleIO – not played with so can’t comment.
Regards,
Dag Sonstebo
Cloud Architect
ShapeBlue
On 04/04/2017, 10:13, "Engelmann Florian" <fl...@everyware.ch> wrote:
Hi,
as the cloudstack documentation explains CLVM is not supported with Cloudstack:
"The use of the Cluster Logical Volume Manager (CLVM) for KVM is not officially supported with CloudStack."
http://docs.cloudstack.apache.org/projects/cloudstack-installation/en/4.9/storage_setup.html
We would like to change our hypervisor from Xenserver to KVM but we have no idea how to use ScaleIO with KVM without using CLVM?
The question is - why isn't CLVM supported? Is it because of snapshots are not allowed on clustered VGs?
Any idea how to use ScaleIO with KVM as shared storage?
All the best,
Florian
EveryWare AG
Florian Engelmann
Systems Engineer
Zurlindenstrasse 52a
CH-8003 Zürich
T +41 44 466 60 00
F +41 44 466 60 10
florian.engelmann@everyware.ch
www.everyware.ch
Dag.Sonstebo@shapeblue.com
www.shapeblue.com
53 Chandos Place, Covent Garden, London WC2N 4HSUK
@shapeblue