From: Alan Jack Pippin <ajp@pippin.(none)>
Date: Wed, 23 Nov 2005 16:23:37 +0000 (-0700)
Subject: Changed image extension from .img to .iso.
X-Git-Tag: release-0.4~14^2
X-Git-Url: http://git.pippins.net/embedvideo/.git/static/images/%7Blink_ppi%7D?a=commitdiff_plain;h=d12ec198eaa98cbe9416593f145142a178daeffd;p=backups%2F.git

Changed image extension from .img to .iso.
Enabled new environment variables: imagesize, availsizemb, blocksize
Added NULL env variable checking in main.cpp.
Added new "disks remaining" print out to lsbackups.
---

diff --git a/main.cpp b/main.cpp
index 81b3b2c..6dc5465 100644
--- a/main.cpp
+++ b/main.cpp
@@ -9,8 +9,9 @@
 
 using namespace std;
 
-static const unsigned int bytes_in_block = 0x800;
-static const char * dbname = "/var/lib/backups/backups.db.tmp";
+static unsigned int bytes_in_block;
+static const char * dbname_in = getenv("backupdbin");
+static const char * dbname_out = getenv("backupdbout");
 
 unsigned long long read_time( istream &i ) {
   string date_string;
@@ -133,6 +134,17 @@ void delete_objects( ITER begin, const ITER &end ) {
 }
 
 int main() {
+
+  // Check to make sure required env variables are set
+  if(getenv("backupdbin") == NULL || getenv("backupdbout") == NULL || getenv("blocksize") == NULL || getenv("availsizemb") == NULL)
+  {
+     cerr << "Required environment variables are not set. Exiting." << endl;
+     return 1;
+  }
+
+  // Setup our bytes_in_block value
+  bytes_in_block = atoll(getenv("blocksize"));
+
   // Get the date on stdin
   unsigned long long now = read_time( cin );
 
@@ -141,7 +153,7 @@ int main() {
   populate_set( cin, current );
 
   file_set backed_up;
-  ifstream db( dbname );
+  ifstream db( dbname_in );
   if( db && db.good() ) {
     populate_set( db, backed_up );
   }
@@ -183,8 +195,8 @@ int main() {
   sort( backups_s.rbegin(), backups_s.rend(), FileData::sizecmp );
 
   file_set final;
-  unsigned long long space = 0x100000000ULL;
-
+  unsigned long long space = atoll(getenv("availsizemb")) * 1048576ull;
+ 
   insert_iterator<file_set> final_i( final, final.begin() );
 
   // Copy files over until full or out of files
@@ -217,10 +229,15 @@ int main() {
   unsigned long long total_blocks, total_bytes;
   sizes( final.begin(), final.end(), total_blocks, total_bytes );
 
+  // Track how many disks there are remaining to be burned
+  unsigned long long disks_remaining = 0; 
+  if(modified_bytes || added_bytes) 
+    disks_remaining = (unsigned long long)ceil(static_cast<double>(modified_bytes+added_bytes)/(atoll(getenv("availsizemb"))*1048576ull))-1;
+
   updateLastBackupDate( final.begin(), final.end(), now );
 
   // Write the 'current' list to the dbfile
-  ofstream dbout( dbname );
+  ofstream dbout( dbname_out );
   copy( current.begin(), current.end(), ostream_iterator<FileData*>( dbout ) );
 
   // Write the 'final' list to stdout
@@ -232,7 +249,8 @@ int main() {
   cerr << "	Added Bytes:		" << added_bytes << endl;
   cerr << "	Added Blocks:		" << added_blocks << endl;
   cerr << "	Modified Bytes:		" << modified_bytes << endl;
-  cerr << "	Modified Blocks:	" << modified_blocks << endl << endl;
+  cerr << "	Modified Blocks:	" << modified_blocks << endl;
+  cerr << "        Disks Remaining:        " << disks_remaining << endl << endl;
 
   cerr << "Will be backed up..." << endl;
   cerr << "	Essential Bytes:	" << essential_bytes << endl;
diff --git a/scripts/burn-imgs.sh b/scripts/burn-imgs.sh
index bffc5e9..a1a6483 100755
--- a/scripts/burn-imgs.sh
+++ b/scripts/burn-imgs.sh
@@ -13,8 +13,8 @@ cronstopstart="/etc/init.d/cron"
 # If the noburn file is there then don't burn.
 [ -f "$noburnfile" ] && exit 0
 
-# Discover disk images by looking for .img.md5sum files in $imagedir
-imgmd5=$(ls $imagedir/*.img.md5sum 2>/dev/null | head -n 1)
+# Discover disk images by looking for .iso.md5sum files in $imagedir
+imgmd5=$(ls $imagedir/*.iso.md5sum 2>/dev/null | head -n 1)
 
 # If we didn't find an non-empty file then exit gracefully
 [ -z "$imgmd5" ] && exit 0
diff --git a/scripts/config.sh b/scripts/config.sh
index c3b4a26..ff58479 100755
--- a/scripts/config.sh
+++ b/scripts/config.sh
@@ -5,7 +5,6 @@ datadir="/var/lib/backups"
 tmpdir="/dev/shm/backups"
 imagedir="/backup/imgs"
 currentfiles="$tmpdir/files.db"
-backupdb="$datadir/backups.db"
 backups="$tmpdir/backup-list.db"
 statusfile="$imagedir/backup-status.txt"
 lastbackupfile="$imagedir/lastbackup"
@@ -13,6 +12,13 @@ dev="/dev/dvdrw"
 sdev="ATA:1,0,0"
 noburnfile="$imagedir/noburn"
 
+# These are exported so lsbackups can have access to them
+export backupdbin="$datadir/backups.db"
+export backupdbout="$datadir/backups.db.tmp"
+export imagesizemb=4440
+export availsizemb=4096
+export blocksize=2048
+
 backupdirs="
 /etc
 /home
diff --git a/scripts/pack-image.sh b/scripts/pack-image.sh
index 4f9c828..fd1e8bc 100755
--- a/scripts/pack-image.sh
+++ b/scripts/pack-image.sh
@@ -10,9 +10,14 @@ export PATH=$scriptsdir:/bin:/usr/bin:/sbin:/usr/sbin
 # source the system specific configuration
 [ -f /etc/lsbackups.conf ] && . /etc/lsbackups.conf
 
+# process command line arguments
+case "$1" in 
+  -s) simulate=1;;
+esac
+
 # file locations and other values
 today=$(date +%Y%m%d%H%M%S)
-isoimage="$imagedir/$today.img"
+isoimage="$imagedir/$today.iso"
 isomountdir="$isoimage.mnt"
 restorescript="$scriptsdir/restore.sh"
 
@@ -29,11 +34,11 @@ then
 fi
 
 echo "-> Creating the iso image in $isoimage"
-dd of=$isoimage bs=1M count=0 seek=4440
+dd of=$isoimage bs=1M count=0 seek=$imagesizemb
 
 [ $? != 0 ] && err "dd failed to create $isoimage"
 
-mke2fs -b 2048 -F $isoimage
+mke2fs -b $blocksize -F $isoimage
 
 if [ $? != 0 ]
 then
@@ -41,6 +46,14 @@ then
   err "Unable to create the iso image: $isoimage"
 fi
 
+e2label $isoimage $today
+
+if [ $? != 0 ]
+then
+  rm -rf $isomountdir $isoimage
+  err "Unable to label the iso image: $isoimage"
+fi
+
 echo "-> Mounting the iso image"
 mount -t ext2 -o loop $isoimage $isomountdir
 if [ $? != 0 ]
@@ -57,7 +70,7 @@ echo "-> Running find to get the status of files"
 {
   for type in d f l; do
     findformat="$type %#m %u %g %s %CY%Cm%Cd%CH%CM%CS 0 %p\0"
-    if [ -z $excludedirs ]
+    if [ -z "$excludedirs" ]
     then 
       find $backupdirs -type $type -printf "$findformat"
     else
@@ -65,7 +78,12 @@ echo "-> Running find to get the status of files"
       find $backupdirs -type $type -printf "$findformat" | grep -z -v -f $tmpdir/excluded
     fi
   done
-} > $currentfiles
+} > $currentfiles 
+
+if [ ! -z $simulate ]
+then
+  backupdbin=$backupdbout
+fi
 
 echo "-> Determining list of files to backup with lsbackups"
 {
@@ -74,21 +92,31 @@ echo "-> Determining list of files to backup with lsbackups"
   cat $currentfiles
 } | lsbackups > $backups 2>$statusfile
 
+if [ ! -z $simulate ]
+then
+   umount $isomountdir
+   rm -rf $isomountdir $isoimage
+   cat $statusfile
+   echo "-> Simulated backup complete! Backup database: $backupdbout"
+   exit;
+fi
+
 echo "-> Running rsync to pack the image"
 rsyncopts="-W -H -S -l -p -t -g -o -0 --files-from=- --stats --progress"
 cat $backups | rsync $rsyncopts / $isomountdir
 if [ $? != 0 ]
 then
   umount $isomountdir
-  rm -rf $isomountdir $isoimage $backupdb.tmp
+  rm -rf $isomountdir $isoimage $backupdbout
   err "Unable to rsync to pack the image"
 fi
 
 echo "-> Copying over database and status file"
-mv $backupdb.tmp $backupdb
-cp $statusfile $backupdb $restorescript $isomountdir
+cp $backupdbout $isomountdir/$(basename $backupdbin)
+[ $? != 0 ] && err "Unable to copy the database to $isomountdir"
 
-[ $? != 0 ] && err "Unable to copy the database and status file"
+cp $statusfile $restorescript $isomountdir
+[ $? != 0 ] && err "Unable to copy the status file to $isomountdir"
 
 echo "-> Unmounting image"
 umount $isomountdir
@@ -104,4 +132,8 @@ cat $statusfile | mailx -s "DVD image available to burn - $today" $mailto
 
 echo $today > $lastbackupfile
 
+echo "-> Moving new database to $backupdbin"
+mv $backupdbout $backupdbin
+[ $? != 0 ] && err "Unable to move backupdb: $backupdbout to $backupdbin" 
+