Messages in this thread | | | From | (Tad Kollar) | Subject | Re: Please try knfsd 980922 | Date | Thu, 24 Sep 1998 15:09:39 -0400 (EDT) |
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> > 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...
-Tad
-- ------------------------------------------------------------------------- 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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