Improvements to cron_dump_to_disk
[dump.git] / examples / cron_dump_to_disk / backup_rotate
1 #!/bin/bash
2 #
3 # This script will redirect the backup directory to implement desired backup
4 # schedules.
5 #
6 # We will use just a seven day format where we just move a link
7 # that represents the backup directory, to point to the day of the week.
8 #
9
10 #
11 # Configuration Parameters
12 #
13
14 if [ "$1" = "monthly" ]; then
15 REALDIR="monthly"
16 else
17 REALDIR=`date +%A`
18 fi
19
20 BACKUPPART=${BACKUPPART:-"/backup"}
21 BACKUPDIR=${BACKUPDIR:-"current"}
22
23 echo "### Start of Backup Rotation ###"
24 echo "Using backup partition: $BACKUPPART"
25
26 echo -n "Remounting backup partition read-write ... "
27 if ( mount $BACKUPPART -o remount,rw &> /dev/null ) then
28 echo "done."
29 else
30 echo "failure!"
31 echo " There were problems remounting $BACKUPPART in read-write mode!"
32 echo "Rotation not made!"
33 echo "### End of Backup Rotation ###"
34 exit 1
35 fi
36
37 echo -n "Checking that no directory named \"$BACKUPDIR\" exists ... "
38 if [ -d $BACKUPPART/$BACKUPDIR -a ! -L $BACKUPPART/$BACKUPDIR ]; then
39 echo "failure!"
40 echo " Directory \"$BACKUPDIR\" exists. Can't create link!"
41 echo "Rotation not made!"
42
43 echo -n "Remounting backup partition read-only ... "
44 if ( mount $BACKUPPART -o remount,ro &> /dev/null ) then
45 echo "done."
46 else
47 echo "failure!"
48 echo " There were problems remounting $BACKUPPART in read-only mode!"
49 echo "### End of Backup Rotation ###"
50 exit 1
51 fi
52 echo "### End of Backup Rotation ###"
53 exit 1
54 else
55 echo "done."
56 fi
57
58 cd $BACKUPPART
59
60 echo -n "Creating link: $BACKUPDIR --> $REALDIR ... "
61 if ( ln -snf $REALDIR $BACKUPDIR &> /dev/null ) then
62 echo "done."
63 else
64 echo "failure!"
65 echo " There were problems creating link!"
66 echo "Rotation not made!"
67
68 echo -n "Remounting backup partition read-only ... "
69 if ( mount $BACKUPPART -o remount,ro &> /dev/null ) then
70 echo "done."
71 else
72 echo "failure!"
73 echo " There were problems remounting $BACKUPPART in read-only mode!"
74 echo "### End of Backup Rotation ###"
75 exit 1
76 fi
77 echo "### End of Backup Rotation ###"
78 exit 1
79 fi
80
81 echo -n "Remounting backup partition read-only ... "
82 if ( mount $BACKUPPART -o remount,ro &> /dev/null ) then
83 echo "done."
84 else
85 echo "failure!"
86 echo " There were problems remounting $BACKUPPART in read-only mode!"
87 echo "### End of Backup Rotation ###"
88 exit 1
89 fi
90 echo "### End of Backup Rotation ###"