We run Ceph and we've been very happy with it.
________________________________ From: Engelmann Florian <[email protected]> Sent: Tuesday, April 4, 2017 10:28 AM To: [email protected] 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 <[email protected]> Sent: Tuesday, April 4, 2017 4:17 PM To: [email protected] 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 <[email protected]> Sent: Tuesday, April 4, 2017 4:13 AM To: [email protected] 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 [email protected] 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.
