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URL:
https://askubuntu.com/q/1191198
Title:
Does rsync requires changing UUID after copying a partition?
ID:
/2019/11/23/Does-rsync-requires-changing-UUID-after-copying-a-partition_
Created:
November 23, 2019
Edited: June 12, 2020
Upload:
September 15, 2024
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rsync can clone your entire /
But with both rsync and dd or another cloning method you must change /etc/fstab and /etc/default/grub and by extension /boot/grub/grub.cfg for Ubuntu to work properly.
From this script: Backup/clone live to a new partition which can be booted
rsync is called like this:
rsync -haxAX --stats --delete --info=progress2 --info=name0 --inplace \
/* "$TargetMnt" \
--exclude={/dev/*,/proc/*,/sys/*,/tmp/*,/run/*,/mnt/*,/media/*,/lost+found}
Notice the many directories that you do not want to copy specified with the --exclude directive. These directories are either recreated at boot time (virtual file system) or are pointers to other partitions (like /mnt and /media). You might also want to exclude the Trash folder from copying too.
After rsync completes you need to change the aforementioned files like this:
sudo sed -i "s/$SourceUUID/$TargetUUID/g" "$TargetMnt"/etc/fstab
sudo sed -i "s/$SourceUUID/$TargetUUID/g" "$TargetMnt"/boot/grub/grub.cfg
sudo sed -i "s/quiet splash/nosplash/g" "$TargetMnt"/boot/grub/grub.cfg
Where:
SourceUUID=The UUID of your current partitionTargetUUID=The UUID of your target / clone partitionTargetMnt=The mount point of your clone partitions/quiet splash/nosplash/gline is optional so that when you boot your clone you see a difference with system messages displayed and no splash screen.
Finally to add a GRUB menu option pointing to your new cloned Ubuntu use:
sudo update grub