redesignde the unix-like system directory

[Aryeh Friedman]

On Wed, May 6, 2020 at 4:19 PM Valeri Galtsev <galtsev at kicp.uchicago.edu>
wrote:

>
>
> On 5/6/20 2:55 PM, Bob Proulx wrote:
> > Tim Daneliuk wrote:
> >> Arne Steinkamm wrote:
> >>>>> /cloud, various cloud applications
> >>>>> /net,  network information and server information, etc.
> >>> Looking at a flat layout like this one gives me a feeling, that
> >>> most people forgot that it's a real bad idea to have a
> >>> external mounted directory in the root directory... easy way to make
> >>> a system unresponsive in case of a network problem.
> >>
> >> Can you say a bit more about why this is so?
> >
> > Assume NFS for simplicity.  A mount point at the /nfsmount1 directory.
> > Then run "ls -l /".  That needs to stat(2) each entry in / and hits
> > /nfsmount1
>
> Do people really do that? I kind of since forever use automounter or
> similar, net mounts are in subdirectories of
>
> /net
>
>
Yes all the time some programs even force it if you use them NFS mounted
such as devel/aegis if you want to have a centeral collection of baseline
for all developers to access.   Using /net in many situations (most I have
run into) is the *WEIRD* way not the mounting to  non-/net.  Luckily all
such programs I know of allow/encourage you not to do a direct mount on
root for reasons discussed,

>
> --
> ++++++++++++++++++++++++++++++++++++++++
> Valeri Galtsev
> Sr System Administrator
> Department of Astronomy and Astrophysics
> Kavli Institute for Cosmological Physics
> University of Chicago
> Phone: 773-702-4247
> ++++++++++++++++++++++++++++++++++++++++
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-- 
Aryeh M. Friedman, Lead Developer, http://www.PetiteCloud.org