I ran into an issue today of our server thinking that it was being flooded and locking our nfs users out. Got a LOT of these messages:
Our server:
I could find no information on nfsrc_floodlevel other than source code which didn't explain too much about it. I don't know if it's a kernel config var, or what.
nfsstat -e did show this:
The source code and this output suggest that we're just running into the limit. However, a comment in that source does suggest that "The cache will still function over flood level" but that doesn't seem to be the case. I ended up having to revoke the clients and restarting nfsd to get it operational again.
I would appreciate anyone that could clarify what nfsrc_floodlevel is and how to go about changing it.
Code:
Jul 12 16:08:22 xxxxx kernel: nfsd server cache flooded, try to increase nfsrc_floodlevel
Our server:
Code:
[root@xxxxx /boot]# uname -a
FreeBSD xxxxx 8.2-RELEASE-p2 FreeBSD 8.2-RELEASE-p2 #0: Tue Jun 21 16:52:27 MDT 2011 yyy@xxxxx:/usr/obj/usr/src/sys/PEZ amd64
I could find no information on nfsrc_floodlevel other than source code which didn't explain too much about it. I don't know if it's a kernel config var, or what.
nfsstat -e did show this:
Code:
CacheSize TCPPeak
16385 16385
The source code and this output suggest that we're just running into the limit. However, a comment in that source does suggest that "The cache will still function over flood level" but that doesn't seem to be the case. I ended up having to revoke the clients and restarting nfsd to get it operational again.
I would appreciate anyone that could clarify what nfsrc_floodlevel is and how to go about changing it.