Greg
--------------------
Greg Whalin
gwhalin@numerix.com
On Fri, 9 Oct 1998, H.J. Lu wrote:
> >
> > I have a small network of a diverse number of platforms all utilizing NFS
> > mounts off of a linux knfsd server (2.1.125 w knfsd-980930). The problem
> > I am seeing (at least I think it is a problem) is that none of the clients
> > maintain the mount after the NFS server reboots. This is reproducable
> > under all platforms that I have tested (IRIX, Solaris, SunOS 4, Linux,
> > HPUX, and AIX). Basically, what happens, is this. I reboot our linux nfs
> > server for one reason or another (kernel upgrade). After it is back up
> > and running, I log into any one of our servers to check the nfs mounted
> > filesystem. I can cd into the fs and see all of the directories. I can
> > even cd into each directory under the nfs fs. I get an error if I type
> > pwd. It gives me a different error on each platform, but the gist is that
> > it can't determine the cwd because it lacks permission for .. If I try to
> > cd .. all of the way up and out of the nfs fs, it will not allow me to
> > "leave" the fs. I can repair this by unmounting and remounting on all
> > clients. Then, after this, all works as it should (beautifully).
> >
> > My question is this. Is this the correct behavior? I would venture a
> > guess and say no it is not. From my past experience with running nfsd
> > under Solaris, this does not happen. I can reboot the server, and the
> > connections will "heal" after the reboot completes.
> >
>
> I did a test with a Linux/x86 server running glibc 2.1 and a
> Linux/alpha client running linux 2.1.122 and glibc 2.0. On client, I
> did
>
> # mount server:/usr/src /net/server/src
>
> My server was running linux 2.1.124 with knfsd-980930. Then I
> built linux 2.1.125 with knfsd-980930 on my server. After rebooting
> my server to linux 2.1.125. I did the following on my client
>
> # cd /net/server/src/kernel/linux
> # df
> Filesystem 1024-blocks Used Available Capacity Mounted on
> server:/usr/src 2049907 1582855 462956 77% /net/server/src
> # ls
> OPYING README fs makefile scripts
> CREDITS Rules.make include mm vmlinux
> CVS System.map init modules
> x86.string.diff
> Documentation arch ipc net
> MAINTAINERS config.sea kernel nohup.old
> Makefile drivers lib nohup.out
> # more Makefile
> VERSION = 2
> PATCHLEVEL = 1
> SUBLEVEL = 125
>
> ARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ -e
> s/arm.*/arm/ -e s/
> sa110/arm/)
> ....
>
> Everything works fine for me. You have to make sure you are not
> running Slackware, which tends to break things left and right.
> Also you need to install the nfs rc script in knfsd-980930.
>
>
> H.J.
>
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