Using HP Serviceguard for Linux with Red Hat KVM Guests, May 2013

Technical white paper | Using HP Serviceguard for Linux with Red Hat KVM Guests
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Storage requirements for Serviceguard cluster on KVM guests
The applications managed by Serviceguard require shared storage across all the cluster nodes for their data. As of writing
this white paper, only iSCSI as shared storage is supported in a Serviceguard cluster with KVM guests as cluster nodes.
For details on how to discover and login to iSCSI targets from the KVM guests refer to the below documents.
For RHEL refer to
https://access.redhat.com/site/documentation/Red_Hat_Enterprise_Linux/
-> Storage Administration Guide
For SUSE refer to
https://www.suse.com/documentation/sles11/pdfdoc/stor_admin/stor_admin.pdf
HP Serviceguard for Linux ensures that data integrity during application failover by using persistent reservation utilities
provided by SG3_UTILS. SG3_UTILS should be installed on all the KVM guest nodes that are a part of the cluster.
Restrictions and exclusion
1. ISCSI is the only supported storage mechanism for shared storage in a KVM environment. FC storage is currently
not supported.
2. Lock LUN as arbitration is not supported with iSCSI disk. Hence Quorum server is the only supported quorum
mechanism that can be used for arbitration in HP Serviceguard for Linux cluster with KVM guests as cluster nodes.
3. Live migration of KVM guests that are configured as Serviceguard cluster nodes is not supported.
4. HP Serviceguard for Linux does not support KVM guests carved out of Red Hat Enterprise Virtualization Hypervisor
(RHEV) as cluster nodes.
Supported host and guest operating systems
Table 4. Supported host and guest OS
Host OS Guest OS
RHEL 6.3, RHEL 6.4 RHEL 5.7, 5.8, 5.9, RHEL 6.1, 6.2, 6.3, 6.4. SUSE 11 SP1, SP2