Create the best ghetto backup script of september 2016
This commit is contained in:
Orien Vandenbergh
parent
e51bffd7f2
commit
5a027aaf9e
180
ghetto/backup/create_diskimage.sh
Executable file
180
ghetto/backup/create_diskimage.sh
Executable file
@ -0,0 +1,180 @@
|
||||
#!/bin/bash
|
||||
|
||||
shopt -s extglob
|
||||
|
||||
PARANOIA_DELAY=30
|
||||
PARANOIA_SEQ=`echo "$PARANOIA_DELAY - 1" | bc`
|
||||
HOSTNAME="$1"
|
||||
TARGET="$2"
|
||||
DEST=$TARGET/$HOSTNAME
|
||||
FS="ext2 ext3 ext4 reiserfs reiser4 xfs jfs btrfs ntfs"
|
||||
|
||||
nltos() {
|
||||
sed -e ':a;N;$!ba;s/\n/ /g'
|
||||
}
|
||||
display_syntax() {
|
||||
echo "Syntax: create_diskimage.sh <hostname> <target>"
|
||||
echo ""
|
||||
echo "<hostname> is the name of the host you are creating the image for"
|
||||
echo "<target> is the directory into which the backup should be created"
|
||||
echo " backups are placed into \$target/\$hostname/ (created as needed)"
|
||||
echo ""
|
||||
exit 2
|
||||
}
|
||||
|
||||
if [[ $EUID -ne 0 ]]; then
|
||||
echo "This script must be run as root, figure out a way to make that work..."
|
||||
exit 5
|
||||
fi
|
||||
|
||||
if [ -z "$HOSTNAME" ]; then
|
||||
echo "No hostname specified"
|
||||
display_syntax
|
||||
fi
|
||||
if [ -z "$TARGET" ]; then
|
||||
echo "No target directory specified"
|
||||
display_syntax
|
||||
fi
|
||||
if [ ! -d $TARGET ]; then
|
||||
echo "Target directory doesn't exist"
|
||||
display_syntax
|
||||
fi
|
||||
if [ -d $DEST ]; then
|
||||
echo "Backup directory '$DEST' already exists, please remove before running again..."
|
||||
exit -1
|
||||
fi
|
||||
|
||||
DISKGUESS=`(cd /dev/; ls [shv]d[a-z]* | grep -v '[0-9]') | nltos`
|
||||
PARTGUESSRAW=`lsblk -nl | grep -v 'dm' | awk '$6 == "part" { print $1 }' | nltos`
|
||||
|
||||
PVS=`vgs -o +pv_name --noheadings | awk '{print $NF}' | nltos | sed -e 's/\/dev\///g'`
|
||||
VGS=`vgs --noheadings | awk '{print $1}'`
|
||||
LVS=`find /dev/mapper -type l | grep -v swap | nltos`
|
||||
|
||||
PARTGUESSFS=$PARTGUESSRAW
|
||||
for pv in $PVS; do
|
||||
PARTGUESSFS=${PARTGUESSFS//$pv?()}
|
||||
done
|
||||
|
||||
for part in $PARTGUESSFS; do
|
||||
TYPE=""
|
||||
eval $(blkid /dev/$part | awk ' { print $3 } ')
|
||||
if [[ $FS == *"$TYPE"* ]] && [ -n "$TYPE" ]; then
|
||||
PARTGUESS="$PARTGUESS $part"
|
||||
fi
|
||||
done
|
||||
|
||||
PARTGUESS=`echo $PARTGUESS | xargs`
|
||||
|
||||
printf "Which disks [$DISKGUESS]: "
|
||||
read DISKS
|
||||
echo
|
||||
|
||||
echo "Now we need a list of \"raw\" partitions to back up. The utility we're using"
|
||||
echo "'fsarchiver' doesn't support backing up swap (for good reason). If you"
|
||||
echo "specify a swap partition here, the backup will fail. In addition, we detect"
|
||||
echo "the LVM partitions automatically, so only specify the non-lvm, non-swap"
|
||||
echo "partitions. Generally this is only the device for /boot (normally sda1)"
|
||||
echo ""
|
||||
printf "Which non-lvm partitions [$PARTGUESS]: "
|
||||
read PARTS
|
||||
echo
|
||||
|
||||
if [ -z "$DISKS" ]; then
|
||||
DISKS=$DISKGUESS
|
||||
if [ -z "$DISKS" ]; then
|
||||
echo "No source disks specified"
|
||||
display_syntax
|
||||
fi
|
||||
fi
|
||||
if [ -z "$PARTS" ]; then
|
||||
PARTS=$PARTGUESS
|
||||
if [ -z "$PARTS" ]; then
|
||||
echo "No source partitions specified"
|
||||
display_syntax
|
||||
fi
|
||||
fi
|
||||
|
||||
echo "Performing a backup of the following to the directory '$DEST':"
|
||||
echo " Disks: $DISKS"
|
||||
echo " Partitions: $PARTS"
|
||||
echo " Volume Groups: $VGS"
|
||||
echo " Logical Volumes: $LVS"
|
||||
echo ""
|
||||
echo ""
|
||||
echo "We're about to do work, your warranty is about to expire..."
|
||||
printf "$PARANOIA_DELAY seconds..."
|
||||
for i in `seq $PARANOIA_SEQ -1 0`; do
|
||||
sleep 1
|
||||
printf "\r$i seconds... \b"
|
||||
done
|
||||
echo -e "\rexpired! "
|
||||
echo ""
|
||||
|
||||
echo "-- [$DEST] Creating directory"
|
||||
mkdir $DEST
|
||||
echo ""
|
||||
|
||||
for disk in $DISKS; do
|
||||
echo "-- [$disk] Backing up MBR"
|
||||
dd if=/dev/$disk of=$DEST/$disk.mbr bs=512 count=1
|
||||
echo "-- [$disk] Backing up partition layout"
|
||||
sfdisk -d /dev/$disk > $DEST/$disk.part
|
||||
done
|
||||
echo ""
|
||||
|
||||
for vg in $VGS; do
|
||||
echo "-- [$vg] Backing up LVM layout..."
|
||||
vgcfgbackup -f $DEST/$vg.vgcfg $vg
|
||||
done
|
||||
echo ""
|
||||
|
||||
echo "-- Starting fsarchiver, this will take some time..."
|
||||
LABEL=`date +"$HOSTNAME-%Y%m%d%H%M%S-backup"`
|
||||
FULLPARTS=`echo $PARTS | sed 's/[^ ]* */\/dev\/&/g'`
|
||||
fsarchiver savefs -j4 -L "$LABEL" -o $DEST/fsarchive.fsa $FULLPARTS $LVS
|
||||
|
||||
echo "-- Recording data to make a restore easier..."
|
||||
echo "exit # Ha, you thought i was gonna make this easy?" > $DEST/restore.sh
|
||||
echo "DEST=$DEST" >> $DEST/restore.sh
|
||||
|
||||
for disk in $DISKS; do
|
||||
echo "sfdisk /dev/$disk < \$DEST/$disk.part" >> $DEST/restore.sh
|
||||
echo "dd if=\$DEST/$disk.mbr of=/dev/$disk.mbr bs=512 count=1" >> $DEST/restore.sh
|
||||
done
|
||||
|
||||
for vg in $VGS; do
|
||||
pv=`vgs -o +pv_name --noheadings $vg | awk '{print $NF}'`
|
||||
uuid=`pvs -o +uuid --noheadings $pv | awk '{print $NF}'`
|
||||
echo "pvcreate --uuid $uuid --restorefile \$DEST/$vg.vgcfg $pv" >> $DEST/restore.sh
|
||||
echo "vgcfgrestore -f \$DEST/$vg.vgcfg $vg" >> $DEST/restore.sh
|
||||
echo "vgchange -a y $vg" >> $DEST/restore.sh
|
||||
done
|
||||
|
||||
id=0
|
||||
RESTOREFLAGS=""
|
||||
for fs in $FULLPARTS $LVS; do
|
||||
RESTOREFLAGS="$RESTOREFLAGS id=$id,dest=$fs"
|
||||
id=`echo "$id + 1" | bc`
|
||||
done
|
||||
|
||||
echo "fsarchiver restfs $RESTOREFLAGS" >> $DEST/restore.sh
|
||||
echo "" >> $DEST/restore.sh
|
||||
echo "# Now for the hard part, I know you can do it!" >> $DEST/restore.sh
|
||||
echo "# mount /dev/mapper/<system-root> /mnt/backup" >> $DEST/restore.sh
|
||||
echo "# mount -o bind /dev /mnt/backup/dev" >> $DEST/restore.sh
|
||||
echo "# mount <system-boot> /mnt/backup/boot" >> $DEST/restore.sh
|
||||
echo "# chroot /mnt/backup /bin/bash" >> $DEST/restore.sh
|
||||
echo "# grub-install <boot-device (/dev/sda)>" >> $DEST/restore.sh
|
||||
echo "# exit" >> $DEST/restore.sh
|
||||
echo "# umount /mnt/backup/boot" >> $DEST/restore.sh
|
||||
echo "# umount /mnt/backup/dev" >> $DEST/restore.sh
|
||||
echo "# umount /mnt/backup" >> $DEST/restore.sh
|
||||
echo "#" >> $DEST/restore.sh
|
||||
echo "# The good news is you're done. umount the partition the backups live" >> $DEST/restore.sh
|
||||
echo "# on, repeat the team mantra, and reboot" >> $DEST/restore.sh
|
||||
|
||||
echo ""
|
||||
echo ""
|
||||
echo "All done, to view contents, run: 'fsarchiver archinfo $DEST/fsarchive.fsa'"
|
||||
exit 0
|
||||
Loading…
Reference in New Issue
Block a user