nfsrvstats.srvrpc_errs rapidly increasing

Heinrich Rebehn Tue, 10 May 2005 07:55:30 -0700

Hi all,

In order to find the cause of the problems with our Linux NFS clients, i toook a look at 'nfsstat -s' on our FreeBSD server (RELENG_5_3). I noticed that "Server Ret-Failed" was rapidly increasing. After 1 day of uptime, it is already at 643936:

#######################################################################
[EMAIL PROTECTED] [~] # nfsstat -s

Server Info: Getattr Setattr Lookup Readlink Read Write Create Remove 2501670 234193 1051157 12421 365378 185952 61166 74050 Rename Link Symlink Mkdir Rmdir Readdir RdirPlus Access 60646 19767 246 1494 354 2265 50548 4465364 Mknod Fsstat Fsinfo PathConf Commit 12 588 141 0 103946 Server Ret-Failed 643936 Server Faults 0 Server Cache Stats: Inprog Idem Non-idem Misses 3 5 0 162819 Server Write Gathering: WriteOps WriteRPC Opsaved 185952 185952 0 [EMAIL PROTECTED] [~] # uptime 4:24PM up 1 day, 17 mins, 4 users, load averages: 0.02, 0.03, 0.00 ######################################################################

Looking into nfsstat's source, i found that "nfsrvstats.srvrpc_errs" is the counter shown. Grep-ing the kernel sources showed that it is increased by /usr/src/sys/nfsserver/nfs_srvsock.c. It seems to be a catch-all for unexpected rpc errors. The procedure, nfs_rephead(), is called by nfs_srvcache.c, where rp->rc_status is supplied as value for the error. At this point i am unable to track things any further, i am not familiar with kernel sources.

Question: is there a list of error codes somewhere?

I hacked a log output into nfs_srvsock.c:

--- nfs_srvsock.c       Sat Jul 24 04:07:09 2004
+++ nfs_srvsock.ANT.c   Tue May 10 16:30:52 2005
@@ -213,8 +213,10 @@
        }
        *mbp = mb;
        *bposp = bpos;
-       if (err != 0 && err != NFSERR_RETVOID)
+        if (err != 0 && err != NFSERR_RETVOID){
                nfsrvstats.srvrpc_errs++;
+                log(LOG_WARNING, "ANT: unknown RPC error %d\n", err);
+        }
        return mreq;
 }

Most errors (>90%) are "2", but i also see 1, 13, 17, 66, 70

Any thoughts on this? We do have annoying problems with Linux clients (2.6.8) occasionally hanging when mounting from the FBSD machine. I don't know if this is related, but at least it's a point to start.

Thanks for any help,

        Heinrich Rebehn
--

Heinrich Rebehn

University of Bremen
Physics / Electrical and Electronics Engineering
- Department of Telecommunications -

Phone : +49/421/218-4664
Fax   :            -3341
_______________________________________________
freebsd-net@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-net
To unsubscribe, send any mail to "[EMAIL PROTECTED]"

nfsrvstats.srvrpc_errs rapidly increasing

Reply via email to