On Tue, 01 Jul 2014 15:03:41 +0200 Rik Theys <Rik.Theys@xxxxxxxxxxxxxxxx> wrote: > Hi, > > We use NFS4 to export data to other clients. The exports file has the > directories exported to netgroups, for example: > > /export @nfs(rw,async,no_subtree_check,fsid=0) > /export/data1 @nfs(rw,async,no_subtree_check) > /export/data2 @nfs(rw,async,no_subtree_check) > > If we forget to add a new client to the netgroup, the server rejects the > mount from the client (as it should). But when we then add the client to > the netgroup it can take up to 15 minutes for the server to accept the > new client. > > Using 'getent netgroup nfs' on the server immediately shows the new > entry of the client. > > Running exportfs -rv to reload the exports also doesn't help. > > Does nfsd cache mount access (rejections) somewhere? How can I > flush/tune this cache? Preferably without restarting the NFS server as > that causes a 90s interruption due to the grace period. Does exportfs -f help? It flushes the cache (which is normally updated ever 15 minutes). NeilBrown
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