Newbie question on backing up boot device

Zitat von pinball wizard

I want to move to a quicker and bigger sd card (32Gb) and I am looking how to move my complete install on this new card.

You download Win32DiskImager make complete backup of the 8GB SD-Card, you write back the image to 32GB SD-Card.

Zitat von Aux

You download Win32DiskImager make complete backup of the 8GB SD-Card, you write back the image to 32GB SD-Card.

My experiences with Win32DiskImager were less than satisfactory. I prefer to generate a daily backup image on an attached USB drive with a nice script (and a cron job). And I've repeatedly used those (zipped) images to restore my system after a failed update/upgrade.

The question was to move from 8GB SD card to 32GB SD card. Not how to make a backup because there are different sets of solutions and possibilities.

Zitat von apveening

My experiences with Win32DiskImager were less than satisfactory. I prefer to generate a daily backup image on an attached USB drive with a nice script (and a cron job). And I've repeatedly used those (zipped) images to restore my system after a failed update/upgrade.

Hi, sorry for piggybacking on to this thread but I came looking for a way to do just this, clone my installation drive onto a USB drive before i do a wipe and clean install but was worried that I might need to recover. Anyway... I'm a complete noob who setup OMV using some guides many years ago. Could you share how I can do a clone of my OS drive onto a USB. I've read about clonezilla and also something about a backup plugin but both assumed I create a folder on one of my data drives.

Any help would be appreciated!

Zitat von Carnajo

Hi, sorry for piggybacking on to this thread but I came looking for a way to do just this, clone my installation drive onto a USB drive before i do a wipe and clean install but was worried that I might need to recover. Anyway... I'm a complete noob who setup OMV using some guides many years ago. Could you share how I can do a clone of my OS drive onto a USB. I've read about clonezilla and also something about a backup plugin but both assumed I create a folder on one of my data drives.

Any help would be appreciated!

My script also requires a folder on one of your data drives as a target for the backup/clone. And you will have to mount it as well. After that, a cronjob for a nightly backup is quite easy. My current script (as you can see, there are still some old changes visible).

#!/bin/bash
#
# Automate Raspberry Pi Backups
#
# Usage: system_backup.sh {path} {days of retention}
#
# Below you can set the default values if no command line args are sent.
# The script will name the backup files {$HOSTNAME}.{YYYYmmdd}.img
# When the script deletes backups older then the specified retention
# it will only delete files with it's own $HOSTNAME.
#


# Declare vars and set standard values
backup_path=/mnt/backup
retention_days=3
block_size=4M
ImageName=$(date +%Y%m%d_%H).$HOSTNAME.img
DspName=000_$HOSTNAME


# Check that we are root!
if [[ ! $(whoami) =~ "root" ]]; then
echo ""
echo "**********************************"
echo "*** This needs to run as root! ***"
echo "**********************************"
echo ""
exit
fi


# Check to see if we got command line args
if [ ! -z $1 ]; then
backup_path=$1
fi


if [ ! -z $2 ]; then
retention_days=$2
fi


# Create trigger to force file system consistency check if image is restored
touch /boot/forcefsck
# Create file showing the name so SD cards are identifiable
echo $(date +%Y-%m-%d_%H) > /boot/$DspName
# Now flush the buffers so the files are included in the backup!
echo $(date +%Y-%m-%d_%H:%M:%S) Start Flush > $backup_path/$DspName
sync; echo 1 > /proc/sys/vm/drop_caches
# And it is nice to have a log of the actions.
echo $(date +%Y-%m-%d_%H:%M:%S) End Flush, Start Backup >> $backup_path/$DspName


# Perform backup
# dd if=/dev/mmcblk0 of=$backup_path/$HOSTNAME.$(date +%Y%m%d).img bs=4M
# dd if=/dev/mmcblk0 bs=$block_size | gzip > $backup_path/$HOSTNAME.$(date +%Y%m%d_%H).img.zip
dd if=/dev/mmcblk0 of=$backup_path/$ImageName bs=$block_size
echo $(date +%Y-%m-%d_%H:%M:%S) End Backup, Start Zip >> $backup_path/$DspName
gzip -c $backup_path/$ImageName > $backup_path/$ImageName.zip
echo $(date +%Y-%m-%d_%H:%M:%S) End Zip, Start Clean Up >> $backup_path/$DspName
rm $backup_path/$ImageName


# Remove fsck trigger
rm /boot/forcefsck


# Delete old backups
# find $backup_path/$HOSTNAME.*.img.zip -mtime +$retention_days -type f -delete
find $backup_path/*.$HOSTNAME.img.zip -mtime +$retention_days -type f -delete
echo $(date +%Y-%m-%d_%H:%M:%S) End Clean Up >> $backup_path/$DspName

I guess I will be piggybacking here too.

I wonder if there is a way to create reliable sd card image without removing the sd card?

It can be stored either on another sd card/usb stick or in the cloud

Zitat von chudak

I guess I will be piggybacking here too.

I wonder if there is a way to create reliable sd card image without removing the sd card?

It can be stored either on another sd card/usb stick or in the cloud

I have been doing this for five years with a dd script that runs on cron nightly. I keep the seven most recent backups.

I will provide the script upon request but it will be up to requestors to adapt it to their needs, and it will require adaptations. Some familiarity of bash programming is required.

Zitat von gderf

I have been doing this for five years with a dd script that runs on cron nightly. I keep the seven most recent backups.

I will provide the script upon request but it will be up to requestors to adapt it to their needs, and it will require adaptations. Some familiarity of bash programming is required.

Does not OMV have a dd plugin ?

I'd like to try out your script and full process including crontab. Thx

Zitat von chudak

Does not OMV have a dd plugin ?

I'd like to try out your script and full process including crontab. Thx

I don't think any OMV backup plugin does what I need.

Here is the script. I run it daily on cron @ 3:00am. It takes under eight minutes to backup the OMV 16GB SSD.

You will have to change it to identify your OMV system disk, identify your OMV major version number, and identify the drive and directory where to store the image file.

#!/bin/bash

# Script to make dd image of system drive

now=$(date +"%Y.%m.%d.%H.%M.%S")

file="omv-5-$now.img"

cd /srv/dev-disk-by-label-d1/omv-backup-imgs


dd if=/dev/disk/by-id/usb-SAMSUNG_SSD_UM410_Series_100000000000-0:0 of=$file bs=1M

Zitat von ryecoaaron

The openmediavault-backup plugin does a full disk dd now. So, it would do what your script is doing except it would compress (gzip) the dd file.

Does the openmediavault-backup plugin do a full disk dd of the OMV system disk, does this from a live running system, and can be run on cron with no user intervention?

I no longer use on the fly compression when making dd images. Too many times the image could not be decompressed. Never found out why it didn't work but I sure am glad I tested this before actually needing to restore one of those hosed images.

ryecoaaron would you be so kind and quickly recap the restore process?

I was just planning on doing a video on this.

Am I correct in saying that you would install OMV on the new disk and then dd the image back with:

dd if = /srv/dev-disk-by-label-Media/backup/hdadisk.img of = /dev/hda

So you could use a live distro and then write the image over to the new disk?