[Info-vax] Request description of UFS for VMS person

[Bob Eager]

On Fri, 24 Apr 2009 12:52:25 UTC, 
koehler at eisner.nospam.encompasserve.org (Bob Koehler) wrote:

> In article <176uZD2KcidF-pn2-Q7WHbUsddkvE at rikki.tavi.co.uk>, "Bob Eager" <rde42 at spamcop.net> writes:
> > 
> > No. I've always been amazed that VMS allowed it, since it compromises 
> > the file structure.
> 
>    It's helpfull when trying to recover files lost in a corrupt
>    directory file due to a block read error.  You can intentionally 
>    blow away the directory file and then analyze/media/repair will 
>    move all those files to [syslost].
> 
>    As long as analyze/media/repair finds a corrupt directory it will
>    not try to figure out which files are lost.
> 
>    I've not had the pleasure of losing a block in a directory file in
>    any other OS.  I think on some you'ld have to reformat the disk and
>    restore from backup.

Unix just does it a different way. You can wipe the inode for the 
directory, thus orphaning the file, and then an fsck will pick up the 
files and put them in /lost+found.

-- 
Bob Eager