Hi all, I may have solved the locking problems I experience every once in a while on my machines. It seems the nfs server needs access to the portmapper on the clients. So, I granted access in hosts.allow and that seems to have solved a lot of problems. I experienced two kinds of locking problems: 1) sometimes rrdtool could not lock rrd files rrdtool runs every 5 minutes on all clients, this problem always solved itself 2) sometimes it was impossible to lock any file on an entire filesystem and it would be impossible to release those locks even by unmounting the filesystem and mounting it again This morning I started receiving mails from all client machines complaining they couldn't lock rrd files. The nfs server was spewing the following lines in its log: May 21 09:25:02 ananke kernel: lockd: server voyager not responding, timed out May 21 09:25:02 ananke kernel: lockd: couldn't create RPC handle for voyager Meanwhile the client said: May 21 09:09:25 voyager portmap[13799]: connect from 192.168.200.45 to getport(nlockmgr): request from unauthorized host So I granted 192.168.200.45 access to the portmapper on voyager, and most clients were unstuck. I updated hosts.allow on most clients to grant access to the portmapper now. Now I still have about 4 clients which can't lock rrd files. Umounting the filesystem doesn't help. Umounting the filesystem for about 10 minutes doesn't help. So, I remounted the fs nolock on these machines. So, now I've got problem #2 on these clients on the filesystem containing rrd files. Never had that before. Problem #2 was always on the mail spool. Not sure if the problem is still there, however currently the clients do seem to be able to lock mailboxes. I think problem #1 is gone now, I haven't received any mails of servers not being able to lock rrd files anymore, except for the 4 clients which are never ever able to lock those files. So, in short: locking is still unreliable for me, but the situation has improved. Everything is NFSv3 by the way. Most clients are opensuse 10.2 (kernel 2.6.18.8), server is opensuse 10.3 (kernel 2.6.22.17). Met vriendelijke groet, Erik Hensema -- HostingXS eXcellent Service Telefoon: 024 - 324 91 77 E-mail: hensema@xxxxxxxxxxxx Website: http://www.hostingxs.nl/ ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ NFS maillist - NFS@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/nfs _______________________________________________ Please note that nfs@xxxxxxxxxxxxxxxxxxxxx is being discontinued. Please subscribe to linux-nfs@xxxxxxxxxxxxxxx instead. http://vger.kernel.org/vger-lists.html#linux-nfs -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
