source: branches/3.0/mondo/src/restore-scripts/mondo/grub-MR @ 2944

Last change on this file since 2944 was 2944, checked in by Bruno Cornec, 9 years ago
  • Adds grub2 support (Michael Caerwyn mcaerwyn_at_gmail.com)
  • Property svn:keywords set to Id
  • Property svn:unix-mode set to 755
File size: 5.7 KB
Line 
1#!/bin/sh
2#
3# $Id: grub-MR 2944 2012-02-03 01:12:47Z bruno $
4#
5# grub-MR ------ a rudimentary replacement for grub-install
6#
7#
8
9Die() {
10    echo "$1" >> /dev/stderr
11    exit 1
12}
13
14
15FindBootPart() {
16    local i
17    bootpart=""
18    BOOTPATHNAME=""
19    for sz in /boot / ; do
20        bootpart=`grep " $sz " $2 | cut -d' ' -f1 | head -n1`
21        [ "$bootpart" ] && [ -e "/mnt/RESTORING/$bootpart" ] && break
22    done
23    [ ! "$bootpart" ] && Die "Cannot find boot partition in mountlist"
24
25    if [ "$sz" = "/boot" ] ; then
26        BOOTPATHNAME=/grub
27    else
28        BOOTPATHNAME=/boot/grub
29    fi
30    if [ -e "$MNT_RESTORING/boot/grub/stage1" ] ; then
31        echo "All right then."
32        return
33    fi
34   
35    cd $MNT_RESTORING
36    for i in usr/lib/grub/* ; do
37        echo "Checking $i"
38        if [ -e "$i/stage1" ] ; then
39            BOOTPATHNAME=/$i
40            mkdir -p /boot/grub
41            cp -au $i/* /boot/grub/
42            echo "BOOTPATHNAME is now $BOOTPATHNAME"
43            return 0
44        fi
45    done
46    cd /
47    echo "Cannot find BOOTPATHNAME"
48    return 1
49}
50
51FindPathOfRESTExe() {
52    local path
53    for path in /usr/sbin /usr/bin /usr/local/sbin /usr/local/bin \
54/bin /sbin ; do
55        if [ -f "/mnt/RESTORING/$path/$1" ] ; then 
56            echo "/mnt/RESTORING/$path/$1"
57        return
58        fi
59    done
60    which grub
61}
62
63
64try_grub_hack() {
65    local driveno extraline partno
66    driveno=$1
67    partno=$2
68    extraline="$3"
69
70    echo -en "\
71    device (hd$driveno) $mbrdev\n\
72    $extraline\n\
73    root (hd$driveno,$partno)\n\
74    setup (hd$driveno)\n\
75    quit \n" > /tmp/feed.txt
76    cat /tmp/feed.txt
77    log_file=/tmp/grub.output
78    if [ "$MNT_RESTORING" ] ; then
79        chroot $MNT_RESTORING grub --batch < /tmp/feed.txt > $log_file
80    else
81        grub --batch < /tmp/feed.txt > $log_file
82    fi
83    cat $log_file
84    if grep "Error [0-9]*: " $log_file >/dev/null; then
85            return 1
86    else
87            return 0
88    fi
89}
90
91
92# ---------------------------------- main -----------------------------------
93
94if [ "$#" -ne "2" ] ; then
95    Die "grub-MR <MBR drive> <mountlist filename>; e.g. grub-MR /dev/hda /tmp/mountlist.txt"
96fi
97[ ! -f "$2" ] && Die "mountlist file not found"
98
99if [ -e "/mnt/RESTORING/boot" ] ; then
100    MNT_RESTORING=/mnt/RESTORING
101else
102    MNT_RESTORING=""
103fi
104
105# For some OpenSuSE
106res=1
107if [ "$MNT_RESTORING" ] ; then
108    if [ -x $MNT_RESTORING/usr/sbin/grub-install.unsupported ]; then
109        echo "Now I'll use grub-install.unsupported in chroot" >> $LOGFILE
110        chroot $MNT_RESTORING /usr/sbin/grub-install.unsupported $1 >> $LOGFILE 2>> $LOGFILE
111        res=$?
112        echo "grub-install.unsupported in chroot returned $res" >> $LOGFILE
113    fi
114else
115    if [ -x /usr/sbin/grub-install.unsupported ]; then
116        echo "Now I'll use grub-install.unsupported locally" >> $LOGFILE
117        /usr/sbin/grub-install.unsupported $1 >> $LOGFILE 2>> $LOGFILE
118        res=$?
119        echo "grub-install.unsupported returned $res" >> $LOGFILE
120    fi
121fi
122[ "$res" -eq "0" ] && exit 0
123
124echo "Now I'll use grub-install" >> $LOGFILE
125if [ "$MNT_RESTORING" ] ; then
126    chroot $MNT_RESTORING grub-install $1 >> $LOGFILE 2>> $LOGFILE
127    res=$?
128else
129    grub-install $1 >> $LOGFILE 2>> $LOGFILE
130    res=$?
131fi
132echo "grub-install returned $res" >> $LOGFILE
133[ "$res" -eq "0" ] && exit 0
134
135
136echo "Now I'll use grub2-install" >> $LOGFILE
137if [ "$MNT_RESTORING" ] ; then
138    chroot $MNT_RESTORING grub2-install $1 >> $LOGFILE 2>> $LOGFILE
139    res=$?
140else
141    grub2-install $1 >> $LOGFILE 2>> $LOGFILE
142    res=$?
143fi
144echo "grub2-install returned $res" >> $LOGFILE
145[ "$res" -eq "0" ] && exit 0
146
147echo "Trying a hack" >> $LOGFILE
148FindBootPart $1 $2 2>&1 | tee -a $LOGFILE
149mbrdev=`echo $1 | sed 's/\([^0-9]*\)[0-9]*$/\1/'`
150if echo $mbrdev | grep "/cciss/" > /dev/null ; then
151    partno=`basename $mbrdev | cut -d'p' -f2`
152    mbrdev=`echo $mbrdev | cut -d'p' -f1`
153elif echo $mbrdev | grep "/mapper/mpath" > /dev/null ; then
154    partno=`basename $mbrdev | cut -d'p' -f3`
155    mbrdev=`echo $mbrdev | cut -d'p' -f1-4`
156else
157    partno=`basename $mbrdev | sed 's/[a-z]*//'`
158fi
159if [ ! "$partno" ] ; then
160    partno=0
161else
162    partno=$(($partno-1))
163fi
164if echo $mbrdev | grep "/md" > /dev/null ; then
165    # FIXME: Why this if not used later
166    base=`basename $bootpart`
167    line=`grep $base /proc/mdstat | head -n1`
168    echo "mbrdev was $mbrdev" 2>&1 | tee -a $LOGFILE
169    mbrdev=`parted2fdisk -l | grep /dev/ | head -n1 | tr ':' ' ' | cut -d' ' -f2`
170    echo "mbrdev is $mbrdev" 2>&1 | tee -a $LOGFILE
171    partno="0"; # cheating - FIXME   
172fi
173echo ".............Cool." 2>&1 | tee -a $LOGFILE
174
175grub=`FindPathOfRESTExe grub`
176mkdir -p /boot
177[ "$MNT_RESTORING" ] && ln -sf /mnt/RESTORING/boot/grub /boot/grub
178
179# ---------------------------------
180
181for driveno in 0 1 2 ; do
182    try_grub_hack $driveno $partno "" >> $LOGFILE 2>> $LOGFILE && break
183    try_grub_hack $driveno $partno "find $BOOTPATHNAME/stage1" >> $LOGFILE 2>> $LOGFILE && break
184done
185res=$?
186echo "Hack returned res=$res" >> $LOGFILE
187[ "$res" -eq "0" ] && exit 0
188
189# ---------------------------------
190
191echo "Now I'll use grub-install.patched" >> $LOGFILE
192cp -f `which grub-install.patched` /mnt/RESTORING/sbin
193chroot /mnt/RESTORING grub-install.patched $1 >> $LOGFILE 2>> $LOGFILE
194res=$?
195echo "grub-install.patched returned $res" >> $LOGFILE
196[ "$res" -eq "0" ] && exit 0
197
198# ---------------------------------
199
200if [ -f "/mnt/RESTORING/boot/grub/menu.lst" ]; then
201    grep -vE '^#' /boot/grub/menu.lst > /mnt/RESTORING/tmp/grub.conf
202elif [ -f "/mnt/RESTORING/boot/grub/grub.cfg" ]; then
203    grep -vE '^#' /boot/grub/grub.cfg > /mnt/RESTORING/tmp/grub.conf
204else
205    echo "Unable to find Grub conf file" | tee -a $LOGFILE
206    exit -1
207fi
208echo "Trying to use the existing grub conf file in batch mode" >> $LOGFILE
209cat /mnt/RESTORING/tmp/grub.conf >> $LOGFILE
210chroot /mnt/RESTORING grub --batch < /mnt/RESTORING/tmp/grub.conf
211res=$?
212echo "grub conf file approach returned $res" >> $LOGFILE
213rm -f /mnt/RESTORING/tmp/grub.conf
214[ "$res" -eq "0" ] && exit 0
215
216echo "grub-MR returned res=$res" >> $LOGFILE
217
218exit $res
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