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Re: Mounting files instead of directories?

From Bruce Esquibel <bje@ripco.com>
Newsgroups comp.protocols.nfs
Subject Re: Mounting files instead of directories?
Date 2016-09-16 10:47 +0000
Organization Ripco Communications Inc.
Message-ID <nrgijd$8n1$1@remote5bge0.ripco.com> (permalink)
References <57788725-e7aa-474c-91f8-b7768c6f2e30@googlegroups.com>

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herrmannsfeldt@gmail.com wrote:

> I might try this in another group, as this looks like almost 100% spam.

> Can an NFS client mount a file, instead of a directory?

> I am trying to get diskless SunOS to work, with either a FreeBSD or Linux server.

> It looks like when the client mounts its swap space, it does a mount request on the file name. 
> As far as I can tell, FreeBSD doesn't like that.  I don't have a Sun server running to test.

heh, it's been a while since I did anything with SunOS but this was from
something I saved from a man page all these years, not sure if there is any
portability to it...

--------------------------------------------------------------------------

To use an NFS or local file system swapname, you  should
         first  create a file using mkfile(1M). A local file sys-
         tem swap file can now be added to the running system  by
         just  running  the swap -a command. For NFS mounted swap
         files, the server needs to export the file. Do  this  by
         performing the following steps:

1.   Add the following line to /etc/dfs/dfstab:

                    share -F nfs -o \
                    rw=clientname,root=clientname path-to-swap-file

             2.   Run shareall(1M).

             3.   Have the  client  add  the  following  line  to
                  /etc/vfstab:

                    server:path-to-swap-file -  local-path-to-swap-file nfs \
                        --- local-path-to-swap-file -- swap ---

             4.   Have the client run mount:

                    # mount local-path-to-swap-file

             5.   The client can then run swap -a to add the swap
                  space:

                    # swap -a local-path-to-swap-file
--------------------------------------------------------------------

So it looks like it could be done, but I think (not sure) that swap used
to hang off the root directory (/swap) so it sort of was a directory, not
a file. What did they call it, a tmpfs or something like that.

Have you tried to just create a /swap on the server (linux or bsd) and just
export it? There may not be anything magical about it.

One lead otherwise, there is a guy named Don Nicolas (probably spelled
wrong) that hangs out occassionaly in the sun and solaris groups that seems
to maintain a small collection of older sun hardware, he might know something
about doing what you want to do.

I still have some of the sparc pizza boxes buried in the basement but haven't
touched them since the late 90's. I think the 1+ and a 5 needed the network
boot but the 10 and 20 had drives in them. Was neat to watch all of them
boot up but really prehistoric these days.

-bruce
bje@ripco.com

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Thread

Mounting files instead of directories? herrmannsfeldt@gmail.com - 2016-09-15 09:59 -0700
  Re: Mounting files instead of directories? "J.O. Aho" <user@example.net> - 2016-09-15 23:19 +0200
    Re: Mounting files instead of directories? herrmannsfeldt@gmail.com - 2016-09-15 14:32 -0700
      Re: Mounting files instead of directories? "J.O. Aho" <user@example.net> - 2016-09-16 07:56 +0200
  Re: Mounting files instead of directories? Bruce Esquibel <bje@ripco.com> - 2016-09-16 10:47 +0000
    Re: Mounting files instead of directories? Casper H.S. Dik <Casper.Dik@OrSPaMcle.COM> - 2016-09-16 11:02 +0000
      Re: Mounting files instead of directories? herrmannsfeldt@gmail.com - 2016-09-16 06:22 -0700
        Re: Mounting files instead of directories? Casper H.S. Dik <Casper.Dik@OrSPaMcle.COM> - 2016-09-16 13:28 +0000
          Re: Mounting files instead of directories? herrmannsfeldt@gmail.com - 2016-09-16 12:56 -0700
            Re: Mounting files instead of directories? herrmannsfeldt@gmail.com - 2016-09-16 13:28 -0700
              Re: Mounting files instead of directories? herrmannsfeldt@gmail.com - 2016-09-16 14:39 -0700

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