On Mon, 20 May 2024, NeilBrown wrote: > > Hi, > I have a customer who is experiencing a problem on an older kernel. > After a server restart (actually a cluster fail-over) the client > recovers all opens and locks correctly, but then sends a (previously > queued) WRITE request with a filehandle/stateid for a LAYOUT that was > provided by the server before the restart. Unsurprisingly this doesn't > work. > > I've been hunting through the code to find out where the code attempts > to invalidate all layouts as required by 12.7.4 in RFC-5661. But I > cannot find it. > > I'm guessing that adding a call to pnfs_destroy_layout() in > __nfs4_reclaim_open_state() would do the trick but maybe there is a > better way that is already implemented in later kernels, that I cannot > find. > > Any pointers? I think I found it. nfs4_establish_lease() calls pnfs_destroy_layouts(). And that is present in the old kernel that isn't working... both. Must be something else. Sorry for the noise. NeilBrown
