Date: Wed, 6 May 2020 16:31:26 -0400 From: Aryeh Friedman <aryeh.friedman@gmail.com> To: Valeri Galtsev <galtsev@kicp.uchicago.edu> Cc: FreeBSD Mailing List <freebsd-questions@freebsd.org> Subject: Re: redesignde the unix-like system directory Message-ID: <CAGBxaXmO7EmHw6UOQWUp5gBu-89%2BfjTeyeK-NrWHxrg3rDOpqQ@mail.gmail.com> In-Reply-To: <3f899735-1ed2-105c-1483-0450b8dcc7a3@kicp.uchicago.edu> References: <83788746a7d8a802d8af4b582e00827166febd1a.camel@tom.com> <CAEJNuHzCcqR0-v_SEPT4QWai1owzL_41M-YN3fTS_YGHN0jwFg@mail.gmail.com> <9a387b42-8da5-2968-24ba-754c3e461252@kicp.uchicago.edu> <20200506151230.GI82984@trajan.stk.cx> <c3f5a607-760d-8a85-c0f3-e72ee6b9a3dc@tundraware.com> <20200506134457056426360@bob.proulx.com> <3f899735-1ed2-105c-1483-0450b8dcc7a3@kicp.uchicago.edu>
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On Wed, May 6, 2020 at 4:19 PM Valeri Galtsev <galtsev@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 > ++++++++++++++++++++++++++++++++++++++++ > _______________________________________________ > freebsd-questions@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to " > freebsd-questions-unsubscribe@freebsd.org" > -- Aryeh M. Friedman, Lead Developer, http://www.PetiteCloud.org
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