X-Git-Url: http://git.pippins.net/embedvideo/.git/?a=blobdiff_plain;f=scripts%2Frestore-script.sh;h=af5a80cd684deee617c8cc4cedd522f6d6e3cca6;hb=8973f8a61994c0e28fce64a3dc688d1e5f438d42;hp=66ac4fb5b4da27c64842c96444daf04313059a71;hpb=9c5abcc59e83fa16bfeb810cc4d51960f8586a4e;p=backups%2F.git

diff --git a/scripts/restore-script.sh b/scripts/restore-script.sh
index 66ac4fb..af5a80c 100755
--- a/scripts/restore-script.sh
+++ b/scripts/restore-script.sh
@@ -1,67 +1,91 @@
 #!/bin/sh
 
 function err() {
-  echo 2>&1 "-E- $1"
+  echo >&2 "-E- $1"
   exit 1
 }
 
-if [ ! -z "$3" ]; then
-  mountdir=$3 
-fi
+[ -n "$3" ] && mountdir=$3
 
-if [ -z "$mountdir" ]; then
-  echo >&2 '$mountdir must be set'
-  exit 1
-fi
+[ -z "$mountdir" ] && err '$mountdir must be set'
 
-if [ -z "$rundir" ]; then
-  echo >&2 '$rundir must be set'
-  exit 1
-fi
+rundir=${rundir:-$(dirname $0)}
 
-export PATH=${rundir%%/}:/bin:/usr/bin:/sbin:/usr/sbin:/sw/bin
+export PATH=${rundir%/}:/bin:/usr/bin:/sbin:/usr/sbin:/sw/bin
 
-if [ ! -d "$1" -o ! -d "$2" ]; then
-  echo >&2 "Usage: $0 <source-dir> <target-dir> [<mnt-dir>]"
-  echo >&2 "       source-dir - directory on backup disks to restore from"
-  echo >&2 "       target-dir - directory to restore files to"
-  echo >&2 "       mnt-dir    - directory where backup disk is mounted (optional)"
-  echo >&2 "Example: $0 / / /mnt/cdrom"
-  exit 1
-fi
+if [ -z "$1" -o ! -d "$2" ]; then
+  err "
 
-device=$(mount | grep "on ${mountdir%%/} " | awk '{print$1}')
+Usage: $(basename $0) <source-dir> <relocate-dir> [<mnt-dir> [remote_user@remote_host]]
+  source-dir   - Directory on backup disks to restore (relative to
+                 $mountdir)
+  relocate-dir - Base directory to restore files into (usually /)
+  mnt-dir      - Directory where backup disk is mounted (optional)
 
-if [ -z "$device" ]; then
-  echo >&2 "Cannot determine cdrom device"
-  exit 1
+Examples:
+  # Restore everything from disks (explicitly specifying dvd mount point.)
+  % $(basename $0) / / /mnt/cdrom
+
+  # Restore everything from disks
+  % $(basename $0) / /
+
+  # Restore only files under /home on disks to /home on the system
+  % $(basename $0) /home /
+
+  # Restore files under /home on disks to /home/home on the system
+  # (this is usually not what you want.)
+  % $(basename $0) /home /home
+"
 fi
 
-cp ${mountdir%%/}/backups.db ${mountdir%%/}/backup-status.txt $rundir
-dbfile=${rundir%%/}/backups.db
+device=$(mount | grep "on ${mountdir%/} " | awk '{print$1}')
+
+[ -z "$device" ] && err "Cannot determine cdrom device"
+
+cp ${mountdir%/}/backups.db ${mountdir%/}/backup-status.txt $rundir
+dbfile=${rundir%/}/backups.db
 
 dates=$(cat $dbfile | list-dates.sh)
 
 for date in $dates; do
-  success=false
-  while ! $success; do
-    eject $device
-    [ $? != 0 ] && err "Cannot eject the disk. Drive is busy. Run lsof $mountdir to see why."
-    echo >&2 "Please insert backup disk:  $date"
-    echo >&2 "Press Enter to continue"
-    read bogus
-    eject -t $device
-
-    # Mount the media
-    mount -t ext2 $device ${mountdir%%/}
-
-    if grep -q $date ${mountdir%%/}/backup-status.txt; then
-      success=true
-    else
-      echo "This doesn't seem to be the right disk."
-    fi
-  done
-
-  rsyncopts="-W -H -S -l -p -t -g -o -0 --files-from=- --stats --progress"
-  cat $dbfile | files-from-date.sh $date | grep -z -e "${1}" | rsync $rsyncopts ${mountdir%%/}/ ${2%%/}/
+  filelist=$(tempfile)
+  # Check to see if files are actually needed from the current disk before requesting it.
+  cat $dbfile | files-from-date.sh $date | grep -z -Z -e "^${1%/}/" > $filelist
+  if [ -s $filelist ]; then
+    success=false
+    loop=0
+    while ! $success; do
+      eject $device
+      [ $? != 0 ] && err "Cannot eject the disk. Drive is busy. Run lsof $mountdir to see why."
+      echo "Please insert backup disk:  $date"
+      echo "Press Enter to continue"
+      read bogus
+      eject -t $device
+
+      # Mount the media
+      mount -t ext2 $device ${mountdir%/}
+
+      if grep -q $date ${mountdir%/}/backup-status.txt; then
+        success=true
+      elif e2label $device | grep -q $date; then
+        success=true
+      elif [ $loop -gt 2 ]; then
+        echo "I still can't verify the identity of the disk."
+	echo "If you are sure it is correct, press Enter to continue."
+	echo "Otherwise, press CTRL-C to abort."
+	read bogus
+	success=true
+      else 
+        echo "This doesn't seem to be the right disk."
+	loop=$((loop+1))
+      fi
+    done
+
+    rsyncopts="-W -H -S -l -p -t -g -o -0 --files-from=- --stats --progress"
+    [ -z "$4" ] && cat $filelist | rsync $rsyncopts ${mountdir%/}/ ${2%/}/
+    [ -n "$4" ] && cat $filelist | rsync $rsyncopts -e ssh ${mountdir%/}/ ${4}:${2%/}/
+  else
+    echo "No files are needed from disk: $date.  Skipping it."
+  fi
+  rm -f $filelist
 done