Hi 

Reading this mroning the other opened thread about "Problem with exportfs" 
, I'm thinking about another problem I faced with exportfs : 

on rhel, when command exportfs -u  successfully returns, you may think you 
could umount the FS exported, but this is not always true,  even if fuser 
or lsof does not return any process using the FS, sometimes it can't be 
unmounted
just after the exportfs -u . That leads to a very annoying problem with 
Pacemaker, when you have for example a group with in order :
File system resource
exportfs resource
when stopping the group, sometimes (but often) the Stop op  on Filesystem 
fails, hence Pacemaker fences the node (on-fail=fence)

Just a precision : I 've only NFS v3 clients , none v4  (meaning I think 
that le leastime for nfsv4 should not exist in that case)

I know that it seems to be more a problem of exportfs -u command, than a 
problem on exportfs ocf script but ...

does anybody has a workaround for this problem ?

Thanks a lot.
Regards
Alain
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