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Description of problem:
the init.d/netfs script retries unmounting NFS filesystems when none
are actually mounted. This delays system shutdown by a few seconds and
produces misleading log messages that might obscure real errors.


Version-Release number of selected component (if applicable):
initscripts-7.55.1-1

How reproducible:
Always

Steps to Reproduce:
1. Start NFS daemon on the machine.
2. Shutdown machine.


Actual Results:  netfs retries unmounting NFS filesystems, even though
none are mounted. These are from boot.log:

Aug  9 18:41:27 sputnik netfs: Unmounting NFS filesystems:  succeeded
Aug  9 18:41:34 sputnik netfs: Unmounting NFS filesystems (retry): 
succeeded
Aug  9 18:41:41 sputnik netfs: Unmounting NFS filesystems (retry): 
succeeded

Expected Results:  Shouldn't need to unmount anything.

Additional info:

I believe this problem occurs when a machine is both an NFS client and
an NFS server. It is due to nfsd being present in /proc/mounts even
after the init.d/nfs script has attempted to shut it down. The
following typescript shows that the awk script from line 96 of
init.d/netfs miscounts the nfsd mount on /proc/fs/nfsd as an nfs
filesystem mounted from another machine, and hence tries to unmount it
repeatedly.

[root@sputnik root]# cat /proc/mounts
rootfs / rootfs rw 0 0
[...]
/proc /proc proc rw,nodiratime 0 0
/sys /sys sysfs rw 0 0
none /dev/pts devpts rw 0 0
usbdevfs /proc/bus/usb usbdevfs rw 0 0
/dev/hda5 /boot ext3 rw 0 0
[...]
sunrpc /var/lib/nfs/rpc_pipefs rpc_pipefs rw 0 0
automount(pid1657) /net autofs rw 0 0
nfsd /proc/fs/nfsd nfsd rw 0 0
[root@sputnik root]# LC_ALL=C awk '!/^#/ && $3 ~ /^nfs/ && $2 != "/"
{print $2}' /proc/mounts
/proc/fs/nfsd
[root@sputnik root]# /etc/init.d/nfs stop
Shutting down NFS mountd:                                  [  OK  ]
Shutting down NFS daemon:                                  [  OK  ]
Shutting down NFS quotas:                                  [  OK  ]
Shutting down NFS services:                                [  OK  ]
[root@sputnik root]# LC_ALL=C awk '!/^#/ && $3 ~ /^nfs/ && $2 != "/"
{print $2}' /proc/mounts
/proc/fs/nfsd
[root@sputnik root]# 

Probably just a matter of fixing the pattern being matched against
'$3' in the script...