Sharing Disks Between L-Servers - Fujitsu ServerView Resource Orchestrator Cloud Edition V3.1.0 User Manual

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SCSI:3:0 - SCSI:3:14 AM
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When changed to use a path through disk or difference disk
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Note that changing the device path for the system disk enables deletion of disks for all disks.
Once a virtual L-Server is created, do not change the device path of the system disk using VM management software as doing so
results in the following behavior.
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A hyphen ("-") is displayed for [Usage] in the [Disk Information] displayed on the [Resource Details] tab on the ROR console.
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Reduction of the size of the system disk will be possible.
When changing the disk type using the same device path from VM management software, perform the following procedure.
1.
Delete a disk from the virtual machine using VM management software.
2.
Confirm that the disk deleted in step 1 has been deleted as disk information of the L-Server on the ROR console.
3.
On VM management software, add a disk to the virtual machine.
Here, changing the disk type refers to the following:
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Switching from a virtual disk to Raw Device Mapping, a pass-through disk, or a difference disk
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Switching Raw Device Mapping, a pass-through disk, or a difference disk to a virtual disk
When using VM management software to change the configuration of disk resources saved in a virtual machine that were created from
virtual storage, the disk resources registered in the storage pool may be deleted.
When snapshots are collected from the virtual machine using VM management software, attaching disks to or detaching disks from the
L-Server may fail.

17.2.4 Sharing Disks Between L-Servers

This section explains how to share disks between multiple L-Servers.
Prerequisites
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Sharing of disks is possible when the managed servers and storage are shared using Fibre Channel connections.
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First disk (System Volume) cannot be shared between L-Servers.
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Control of simultaneous access to shared disks is performed by other applications, such as cluster systems.
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Disk sharing between L-Servers is only possible for physical L-Servers that are use SAN boot.
Installation
Use the following procedure to create new L-Servers and to share disks between L-Servers:
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Create an L-Server (First server)
Create an L-Server, referring to
When creating an L-Server using the command, execute the rcxadm lserver create command.
For details on the rcxadm lserver create command, refer to "3.6 rcxadm lserver" and "15.3.1 Definition Information for Physical L-
Servers (XML)" in the "Reference Guide (Command/XML) CE".
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Creating an L-Server (For a second or later server)
Create an L-Server. In this case, select the following:
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Select the disk to allocate to the L-Server.
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Select [Allocated] for [Allocation Status].
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Select the first L-Server created in "Creating an L-Server (For a first server)" as "Allocated L-Server".
"Chapter 16 Creating L-Servers".
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