Re: Msft / Virtual Disk

Hi Jochen,

Jochen Wezel - CompuMaster GmbH wrote:
>>> I wonder that a (mirrored) virtual disk can make trouble...?!?
>> It doesn't.
>> Virtual machines simply do not emulate (or pass-through) the optional commands
>> used by smartctl to get diagnostic info.
>> https://www.smartmontools.org/wiki/FAQ#DosmartctlandsmartdrunonavirtualmachineguestOS
> Yes, so my expected behaviour of smartmon in a VM was to never report anything because there is nothing to monitor.
> But then, I got the message below...
>>>>>> Terminate command early due to bad response to IEC mode page
>>>> A mandatory SMART command failed: exiting. To continue, add one or more '-T permissive' options.
> It seems to be a "false positive" from my point of view.

The message does not indicate disk problems. It means that the device 
does not support the SCSI IEC mode page. Smartctl then assumes a badly 
conforming device and aborts further processing.

Virtual disks of VMware or VirtualBox emulate the IEC page and smartctl 
prints a sane (but useless) result.

Regards,
Christian


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