[Linux-cluster] Problem with nfsclient.sh status checking

[Birger Wathne]

birger wrote:

> I have now looked into the error messages I get in /var/log/messages 
> saying things like
> Apr 26 13:03:08 server1 clurgmgrd[4969]: <notice> status on nfsclient 
> "nis-hosts" returned 1 (generic error)
>
> The problem is in nfsclient.sh. It uses the output from exportfs to 
> check that file systems are still exported. When the mount point name 
> is longer than 14 characters exportfs breaks the line. This breaks 
> nfsclient.sh.
>
A little more info... Whenever the status check failed the client got 
stale NFS handle for a little while. I guess the entry got unexported 
and reexported. Stale NFS handles are a bad thing. Hanging NFS service 
is better from a data integrity point of view.

The very quick and dirty fix follows. Edit status check in 
/usr/share/cluster/nfsclient.sh to look like this
        exportfs -v | tr -d "\n" | sed -e 's/([^)]*)/\n/g'| grep -q 
"^${OCF_RESKEY_path}[\t ]*.*${OCF_RESKEY_target}"

the -v option to exportfs is used to give an easy way to put line breaks 
in just where they are supposed to be.

-- 
birger