1#!/bin/bash
2
3# Repeatedly copy files to NFS server.
4
5# Copyright (C) 2003-2006 IBM
6#
7# This program is free software; you can redistribute it and/or
8# modify it under the terms of the GNU General Public License as
9# published by the Free Software Foundation; either version 2 of the
10# License, or (at your option) any later version.
11#
12# This program is distributed in the hope that it will be useful, but
13# WITHOUT ANY WARRANTY; without even the implied warranty of
14# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15# General Public License for more details.
16#
17# You should have received a copy of the GNU General Public License
18# along with this program; if not, write to the Free Software
19# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
20# 02111-1307, USA.
21
22if [ -z "$NFS_SERVER" -o "$NFS_SERVER" == "0" ]; then
23	echo "NFS server not configured."
24	exit 255
25fi
26
27SHORTHOST=`echo "$HOSTNAME" | sed -e 's/\..*//g'`
28
29# set up to delete nfs data and unmount nfs when we die
30NFSMOUNT=/pounder
31NFSLOCAL="$POUNDER_TMPDIR/nfs-$$"
32trap 'echo Cleaning up...; mv $NFSLOCAL/$SHORTHOST/testnet $NFSLOCAL/$SHORTHOST/testnet.del; rm -rf $NFSLOCAL/$SHORTHOST/testnet.del; umount $NFSLOCAL; rm -rf $NFSLOCAL; echo Clean.; exit 0' 1 2 15
33
34[ ! -x $NFSLOCAL ] && mkdir $NFSLOCAL
35echo "Mounting remote storage via NFS..."
36
37echo Mounting $NFS_SERVER:$NFSMOUNT on $NFSLOCAL...
38
39# Did we see any failures?
40LOGFILE=/proc/$$/fd/1
41OLD_ERRORS=`egrep -ic "(err|fail|cannot|invalid|denied)" $LOGFILE`
42
43if (mount "$NFS_SERVER:$NFSMOUNT" $NFSLOCAL -t nfs -o tcp); then
44	# Create a dir for this machine and sleep to give our mkdir a
45	# better chance of making it.
46	[ ! -x $NFSLOCAL/$SHORTHOST ] && mkdir $NFSLOCAL/$SHORTHOST
47	sleep 5
48
49	# If we've already stuff here, move it and delete it.
50	# Meanwhile, create ourselves a new directory for the copy
51	[ -x $NFSLOCAL/$SHORTHOST/testnet ] && \
52		mv $NFSLOCAL/$SHORTHOST/testnet $NFSLOCAL/$SHORTHOST/testnet.del
53	[ -x $NFSLOCAL/$SHORTHOST/testnet.del ] && \
54		rm -rf $NFSLOCAL/$SHORTHOST/testnet.del &
55
56	# Actually copy data...
57	echo "Remote NFS copy in progress..."
58	cp -pr /usr $NFSLOCAL/$SHORTHOST/testnet
59
60	# Now diff it...
61	diff -Naur /usr $NFSLOCAL/$SHORTHOST/testnet > $POUNDER_TMPDIR/nfs.diff
62
63	# Now remove it
64	rm -rf $NFSLOCAL/$SHORTHOST/testnet
65
66	# and unmount
67	umount $NFSLOCAL
68	rm -rf $NFSLOCAL
69else
70	echo Unable to connect to the NFS server $NFS_SERVER.
71	echo Please check network configuration and update the script.
72	exit -1
73fi
74
75# Anything in the diff?
76DIFF_ERRORS=`wc -l < $POUNDER_TMPDIR/nfs.diff`
77if [ $DIFF_ERRORS -gt 0 ]; then
78	exit $DIFF_ERRORS
79fi
80
81# Did we see any failures?
82NEW_ERRORS=`egrep -ic "(err|fail|cannot|invalid|denied)" $LOGFILE`
83ERRORS=$((NEW_ERRORS - OLD_ERRORS))
84if [ $ERRORS -eq 255 ]; then
85        ERRORS=254
86fi
87exit $ERRORS
88
89