NFS mounts dissapearing
Sean Bruno
sean.bruno at dsl-only.net
Wed Jan 28 10:07:30 PST 2009
On Wed, 2009-01-28 at 18:52 +0100, Michiel Boland wrote:
> Sean Bruno wrote:
> > I've noted that my NFS mount of a directory is vanishing periodically
> > under -current. I am unable to unmount/remount the directory and the
> > system returns Permission Denied on all attempts to access the
> > directory.
> >
> > Is this something that is known and being investigated?
>
> FWIW I am seeing this too, except that I can still umount/remount. It appears to
> me that TCP connections to remote nfsd use a privileged source port initially,
> but if the connection is severed and reestablished later the source port is no
> longer < 1024. Client is -CURRENT, server is solaris with nfssrv:nfs_portmon=1.
>
> Cheers
> Michiel
Here client is -CURRENT, server is linux with default NFS settings.
linux sysctl settings:
sysctl -a |grep nfs
fs.nfs.nlm_grace_period = 0
fs.nfs.nlm_timeout = 10
fs.nfs.nlm_udpport = 0
fs.nfs.nlm_tcpport = 0
fs.nfs.nsm_use_hostnames = 0
fs.nfs.nsm_local_state = 0
fs.nfs.nfs_callback_tcpport = 0
fs.nfs.idmap_cache_timeout = 600
fs.nfs.nfs_mountpoint_timeout = 500
fs.nfs.nfs_congestion_kb = 79232
sunrpc.nfs_debug = 0
sunrpc.nfsd_debug = 0
Sean
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