[Info-vax] Re; Spiralog, RMS Journaling (was Re: FREESPADRIFT)

[lawrencedo99 at gmail.com]

On Thursday, June 23, 2016 at 1:43:09 AM UTC+12, Stephen Hoffman wrote:
> On 2016-06-22 07:27:26 +0000, Lawrence D’Oliveiro said:
> 
>> On Wednesday, June 22, 2016 at 3:30:03 AM UTC+12, Johnny Billquist wrote:
>>> On 2016-06-18 11:19, Lawrence D’Oliveiro wrote:
>>> 
>>>> Time Machine plays fast and loose with your filesystem integrity 
>>>> (multiple hard links to directories), and you pay the price in 
>>>> reliability <http://arstechnica.com/civis/viewtopic.php?t=1252811>.
>>> 
>>> Multiple hard links are not a problem for file system integrity.
>> 
>> Yes they are.
> 
> Empirically...
> 
> OpenVMS supports multiple links to directories — that's at the core of 
> the cluster file system.

VMS doesn’t treat “orphan” files--those with no directory entry--as a filesystem integrity problem. The users may have a different view, however.

> macOS Time Machine very clearly works, too.

Most of the time...

And as rsync demonstrates, it could so easily have been made to work without risking filesystem integrity.