New Added Entries for Physical Disks in vm.cfg Disappeared When Starting VM on Oracle VM Manager (Doc ID 1073915.1)

Last updated on MARCH 08, 2017

Applies to:

Oracle VM - Version: 2.1.2 - Release: OVM212
Information in this document applies to any platform.

Symptoms

After adding new entries to "disk=" section in vm.cfg, e.g. "phy:/dev/mapper/newdisk1,xvdv,w", all new entries disappeared from vm.cfg when starting the VM on Oracle VM Manager.

For example, the following new physical disks were configured on pool master:
/dev/mapper/newdisk1
/dev/mapper/newdisk2
/dev/mapper/newdisk3

and then added them in vm.cfg below:
disk = ['phy:/dev/mapper/disk,xvda,w',
'phy:/dev/mapper/ocr,xvdb,w',
'phy:/dev/mapper/vote,xvdc,w',
'phy:/dev/mapper/newdisk1,xvdf,w',
'phy:/dev/mapper/newdisk2,xvdh,w',
'phy:/dev/mapper/newdisk3,xvdi,w',
]

When starting the vm on Manager, the vm.cfg will be changed to:
disk = ['phy:/dev/mapper/disk,xvda,w',
'phy:/dev/mapper/ocr,xvdb,w',
'phy:/dev/mapper/vote,xvdc,w',
]

where new three added disk were gone, and none of them was presented in the running VM.

Changes

Configured thee new physical disks and added them in vm.cfg.

Cause

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