Can pacemaker manage software raid (mdadm) devices?

Solution Verified - Updated

Environment

  • Red Hat Enterprise Linux Server 6, 7, 8, 9 (with the High Availability Add On)
  • pacemaker

Issue

  • Can pacemaker manage software raid (mdadm) devices?

Resolution

There currently is no support for mdadm software based raid storage devices that is managed by pacemaker. For more information then see: Support Policies for RHEL High Availability Clusters - Storage Compatibility.

There is limited support for using LVM RAID with the LVM resource-agent and the LVM-activate resource-agent. For more information on this then see the article: Support Policies for RHEL High Availability Clusters - LVM in a Cluster.

A bugzilla was opened to request that software raid (non-lvm) is supported with a new resource-agent called: mdraid.

Red Hat Enterprise Linux 7

  • The issue is being tracked with bugzilla 1672378: Bug 1672378 - [RFE] add the upstream resource agent ocf:heartbeat:Raid1 (RHEL 7 7.7.0). As of Wed, November 11 2020, the status of bugzilla 1672378 is CLOSED. This bug has been closed because the problem described is an issue that will not be fixed. An explanation of why this resolution is set to WONTFIX should be in the bugzilla and if you cannot access the bug or you want further information contact Red Hat support.

Red Hat Enterprise Linux 8

  • RFE RHEL-7606 was opened to test this feature but has been closed as won't fix. Currently, there are no plans to include this feature in a future version of RHEL.

Red Hat Enterprise Linux 9

  • RFE RHEL-7693 was opened to test this feature but has been closed as won't fix. Currently, there are no plans to include this feature in a future version of RHEL.
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