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

[David J Dachtera]

ChrisQ wrote:
> 
> David J Dachtera wrote:
> > AEF wrote:
> >>  Hi,
> >>
> >> Can anyone here point me to a reference that describes the Unix file
> >> system (UFS) at a level and detail similar to the that found in the
> >> reference below? I've Googled for it and looked at a few books and had
> >> no luck. Thanks!
> >>
> >> Guide to OpenVMS File Applications, Section 1.2.2:
> >>
> >> http://h71000.www7.hp.com/doc/731final/4506/4506pro_001.html#apps_files_11controlfiles
> >
> > Well, and perhaps one of the more UN*X-literate folks can double-check
> > me here, probably the most striking short fall of - AFAIK - *ALL* of the
> > UN*X filesystems is their extreme fragility. Without a backup, the loss
> > of a directory is typically unrecoverable. Why? Because the name of a
> > file is stored ONLY in the directory! ...there is no duplication in a
> > file header as we know it in VMS. Unless you have a list of filenames
> > with their I-nodes in some human-readable form, lose a directory and
> > you're toast!
> >
> > D.J.D.
> 
> Not familiar with all the details, but ufs is very old, perhaps the
> original unix file system from bsd circa 70's/80's timeframe. It's still
> available if you choose to use it, but have you looked at all the later
> linux filesystems and zfs on Solaris ?. Very different and far more robust.
> 
> Last time I installed Tru64, I chose ufs because of all the restrictions
> and extra cost involved with using advfs, which required added licences
> just for the utilities, can you believe it ?. How greedy and out of
> touch with reality could dec get ?. Very good unix, but almost zero
> added value. It's all in the box with with more modern unices, (eg)
> Solaris, which does full volume management, raid (software or hardware)
> and loads of other good stuff that makes it a snap to setup and
> maintain. The world has moved on...

I'm stuck with AIX and jfs2.

D.J.D.