[Info-vax] Uptime for OpenVMS

[Bob Eager]

On Fri, 13 May 2011 11:18:10 -0600, Johnny Billquist wrote:

> On 2011-05-13 09.38, Steve Thompson wrote:
>> On Fri, 13 May 2011, Bob Eager wrote:
>>
>>> On Fri, 13 May 2011 01:49:24 -0600, Johnny Billquist wrote:
>>>
>>>> Ok. True. Yes, if the inode numbers were preserved, then it would be
>>>> theoretically possible.
>>>> However, the OS have no way of knowing for sure that the inode
>>>> numbers were preserved, so that is more on the theoretical side (I
>>>> actually don't know of any way to actually preserve inode numbers
>>>> when copying a disk...).
>>>
>>> The equivalent of BACKUP/PHYSICAL would do it. It would be nice
>>> though...
>>
>> That would be dd.
> 
> Hmm. Yuck! Yes, dd would be a way to copy a disk preserving the inode
> numbers. Output disk must be the same size as input disk. And it will be
> slow. But ok... :-)

Don't see why it has to be slow. Give it a nice big buffer and it can be 
very fast.

> But the OS would still not know that this new disk was equivalent to the
> old one...

Yes, that *is* the problem.

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