From c2c1fcab31b083ad82ab98d5c76f2b668bba3984 Mon Sep 17 00:00:00 2001
From: root <empty>
Date: Sat, 5 Dec 2009 15:46:10 +0000
Subject: [PATCH] Implement staggered full backup.

---
 backup.sh | 36 +++++++++++++++++++++++++++---------
 1 file changed, 27 insertions(+), 9 deletions(-)

diff --git a/backup.sh b/backup.sh
index 780a2d7..ac038ed 100755
--- a/backup.sh
+++ b/backup.sh
@@ -35,12 +35,15 @@
 
 # Configuration
 LOCKFILE=/home/backup/backuprun.lockfile
-confdir=/home/backup/conf/           # Configuration files
-storagedir=/backup                   # Where we keep backups
-maksantallfulle=3                    # Number of full backups
-dagermellomfulle=30                  # Days between full backups
-DATE=`date "+%Y%m%d%H%M"`            #format: touch
-DATEs=`date "+%Y-%m-%d %H:%M"`       #format: tar
+confdir=/home/backup/conf/              # Configuration files
+storagedir=/backup                      # Where we keep backups
+maksantallfulle=3                       # Number of full backups
+dagermellomfulle=30                     # Days between full backups
+dagermellomfulleforfast=32              # Days between full backups for machines with fixed
+                                        # full-backup date (in case the fixed day gets missed)
+DAY_OF_MONTH=`date "+%d" | sed s/^0//`  # from 1 to 31
+DATE=`date "+%Y%m%d%H%M"`               #format: touch
+DATEs=`date "+%Y-%m-%d %H:%M"`          #format: tar
 
 # Exclude-pattern
 exclude=$confdir/exclude
@@ -100,7 +103,7 @@ backup()
 {
 
  echo -n `date` >&2
- printf " $computer: $computer:$filesystem $backuplevel backup" >&2
+ printf " $computer: $computer:$filesystem $backuplevel backup\n" >&2
 
  if [ "$backuplevel" = "daglig" ] || [ "$backuplevel" = "incremental" ]
  then
@@ -256,10 +259,25 @@ do
   fi
 
   # Check if we want a full backup
-  if [ -z "`find $storagedir/$computer/$sfilesystem/full/ -name \*tgz -mtime -$dagermellomfulle`" ]; then
+  printf " $computer $filesystem: $confdir/fastfullbackupdag.$computer.$sfilesystem\n"
+  if [ -f $confdir/fastfullbackupdag.$computer.$sfilesystem ]; then
+    fullbackup_min_for_this_machine=$dagermellomfulleforfast
+    if [ "$DAY_OF_MONTH" = "`cat $confdir/fastfullbackupdag.$computer.$sfilesystem`" ]; then
+      backuplevel=full
+    fi
+  elif [ -f $confdir/fastfullbackupdag.$computer ]; then
+    fullbackup_min_for_this_machine=$dagermellomfulleforfast
+    if [ "$DAY_OF_MONTH" = "`cat $confdir/fastfullbackupdag.$computer`" ]; then
+      backuplevel=full
+    fi
+  else
+    fullbackup_min_for_this_machine=$dagermellomfulle 
+  fi
+
+  if [ -z "`find $storagedir/$computer/$sfilesystem/full/ -name \*tgz -mtime -$fullbackup_min_for_this_machine`" ]; then
    backuplevel=full
   fi
- 
+
   # We want to be here
   cd $storagedir/$computer/$sfilesystem/$backuplevel || die
 
-- 
2.39.2