[SOLVED] Kernel Panic - not synching: No init found

[dbaslm]

Hi, just created a two node Oracle RAC using Virtual Box 5.1.28, node 1 vmrhrdb01, node 2 vmrhrdb02.

Both nodes are running RHEL 6.9. The Host OS is 5.11.

I've installed the Oracle clusterware fine on both nodes, then went to reboot and get this message on both nodes:

Kernel panic - not syncing: No init found. Try passing init= option to kernel.
Pid: 1, comm: swapper Not tainted 2.6.32-696.el6.x86_64 #1

I've uploaded the log file for vmrhrdb01.

[Perryg]

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00:00:01.054526 Console: VM runtime error: fatal=false, errorID=Linux2618TooOld message="The host I/O cache for at least one controller is disabled. There is a known Linux kernel bug which can lead to kernel oopses under heavy load. To our knowledge this bug affects all 2.6.18 kernels.
00:00:01.054529 Either enable the host I/O cache permanently in the VM settings or switch to a newer host kernel.

Maybe?

[dbaslm]

vmrhrdb01->Settings->Storage->Controller: SATA

Use Host I/O Cache is enabled.

[Perryg]

I believe you but VirtualBox does not believe it. Does a cold boot solve this?

[dbaslm]

No cold boot does not resolve the issue.

From vmrhrdb01.vbox file

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     </Hardware>
      <StorageControllers>
        <StorageController name="IDE" type="PIIX4" PortCount="2" useHostIOCache="true" Bootable="true">
          <AttachedDevice passthrough="false" type="DVD" hotpluggable="false" port="0" device="0"/>
        </StorageController>
        <StorageController name="SATA" type="AHCI" PortCount="6" useHostIOCache="true" Bootable="true" IDE0MasterEmulationPort="0" IDE0SlaveEmulationPort="1" IDE1MasterEmulationPort="2" IDE1SlaveEmulationPort="3">

[dbaslm]

I do have other builds on this host but never experienced this kernel panic before. I've just fired up an old build running an Oracle 12c RAC with two guests and they start just fine.

Strange.

I've trashed the guests and rebuilt the RAC again on the two guests and again they fail to boot. I've done a snapshot back to the pre-build snapshot I've done they start just fine.

I'll have a word with our Sys Admin, see the possibility of upgrading the host from RHEL 5.11 to RHEL 6.9