linux-restore-commands.sh

linux-restore-commands.sh

# Restore a complete copy of the SSD (sda device)
gunzip -c /media/data/IMAGE_NAME.img.tgz | dd of=/dev/sda

# Create and compress complete backup of sda (the SSD) disk
dd if=/dev/sda conv=sync,noerror bs=1k | gzip -c > "ssd_sda_`date '+%Y%m%d'`.img.gz"

# Remove LVM the snapshot
sudo lvremove /dev/ubuntuvg/rootsnap

# Create LVM snapshot
sudo lvcreate -s -n rootsnap --size 10G /dev/ubuntuvg/rootlv

# Rollback LV changes to the snapshot. Must reboot to take effect
sudo lvconvert --merge ubuntuvg/rootsnap

# Add cron job to check every hour if the snapshot is full
# m h  dom mon dow   command
23 * */1 * * * sh /home/alx/bin/lvm-check-snapshot.sh
# and the content of the script:
PERCENT=$(sudo lvs | grep rootsnap | awk {'print $6'} | egrep -o ^[0-9]{2})
FULLPERCENT=$(sudo lvs | grep rootsnap | awk {'print $6'}
if [ $PERCENT -gt 80 ]
then
    notify-send  "LVM snapshot is almost full: $FULLPERCENT"
fi