How can I unfence new storage devices that were just added to a RHEL 6 High Availability cluster with fence_scsi?
Issue
- When adding a disk to a RHEL 5 cluster with
fence_scsiwe use to issue aservice scsi_reserve restart, on each node, after the online storage rescan and the configuration of the new luns as pv of a clustered vg. Doing so ensures that the proper keys are placed on the disks added to the configuration and keeps fencing working.
We have noticed that in RHEL 6scsi_reserveis no more provided as a service or as an init script. What is the proper way to ensure the keys are placed on the new luns? - How do I add new devices to a cluster when using
fence_scsi? - How do I unfence storage devices added to a cluster after it was already running?
- Can I register and reserve new storage devices in my cluster without restarting any of the nodes?
Environment
- Red Hat Enterprise Linux (RHEL) 6 with the High Availability Add On
- One or more
fencedevicesorstonithdevices configured to use agentfence_scsi - New shared storage devices added to the cluster after nodes are already joined as members
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