On 01/31/2012 05:42 AM, gene heskett wrote: > On Tuesday, January 31, 2012 05:37:54 AM Mark Wendt did opine: > > >> On 01/30/2012 11:35 PM, gene heskett wrote: >> <snippage> >> >> >>> Both machines have now been rebooted, it seems you can't reboot just >>> one end of an NFS link as the un-rebooted end of it will lock solid, >>> needs a reset button push to reboot within about 10 minutes. But >>> that is secondary. Faint memories remind me that it happened several >>> times before& may be one of the reasons I didn't really want to use >>> nfs. But it otherwise is working well for the usage I need. >>> >> Gene, NFS really shouldn't be doing that. Sounds like the client side >> is hanging when it can't complete any I/O to the NFS mounted disk. What >> I'd do in that case is run the NFS server on your pclos machine, and the >> client on your Ubuntu box. If you reboot your Ubuntu box to clear a >> LinuxCNC (gawd, it's hard not to type EMC2...) problem, the NFS server >> shouldn't freeze up, since it only lost the client connection. When the >> Ubuntu machine comes back up, it'll just NFS mount the disk on the pclos >> machine. That should cure the lock problem. >> > > Bear in mind Mark, that I now have it setup so each is both a client and a > server, so that I can copy stuff in both directions. No clue if that is a > no-no, but it works, until I reboot either one. Perhaps some other option > needs to be enabled in /etc/exports? Like Sgt. Schultz, I no nothing. :) > > Cheers, Gene > Do you really need to do that? That does make rebooting a bit trickier. How are you mounting the NFS partitions? By that I mean, what options are you using? Have you tried using the "soft" mounting option, along with "retrans=n"? The default is "hard" and it keeps banging away with NFS requests indefinitely. "soft", in conjunction with the "retrans" option stops that behavior after "n" attempts.
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