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    SubjectRe: Please try knfsd 980922
    > > First let me say that the exports improvements are extremely welcome....
    > >
    > > Unfortunately I'm seeing stability problems using a large number of client
    > > systems with knfs-980922. This is a cluster with 40 diskless machines... after
    > > about 17 of them boot, the nfs server stops responding. Each client needs
    > > two mounts. Originally I was running with 5 nfsds which I increased to 16
    > > but it didn't help.
    > >
    > > The server kernel is 2.1.122ac2 + knfsd-980922 (applied both patches). I
    > > have nfsd compiled into the kernel rather than as a module. Clients are
    > > running 2.0.35 and 2.1.117. I didn't see the problem with knfs-0.4.22 +
    > > 2.1.11x or knfs-980915 + 2.1.122 (didn't try 980920).
    > Please try 2.1.122 with knfsd-980922. There are no new kernel
    > patches from knfs-980915 to knfsd-980922. If it is the kernel NFS
    > server, not mountd, that stops responding, I don't think it is
    > knfsd-980922 who causes it.

    I tried it with plain 2.1.122 + 980922 patches but it still didn't work. So
    I doubted my assessment of 980915 working as well and tried 2.1.122 +
    980915... it breaks in the same way. When I tried it before I just rebooted
    the server without rebooting the clients, which is why I didn't see
    the problem.

    The point at which it freezes up is when the 20th or so client requests a
    mount. However, that event never gets entered into the server's logs. To
    fix it, I kill the daemons, turn off the newly booted clients, and restart
    the daemons. If I don't turn off those machines first it won't respond when
    it comes back up. Sometimes I won't turn off enough and the server will
    come up for a short time but stop responding a few minutes later.

    I'll try 2.1.122 + knfs 0.4.22 next to see if maybe its actually a 2.1.122
    networking thing...


    Thaddeus J. Kollar |
    Sterling Software, Scientific Systems Division | "Evildoers, eat my
    NASA Lewis Research Center | justice!!!" - The Tick
    Tel: 216-433-5105 Fax: 216-433-8000 |

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