If you don't do that your mileage my vary. Most likely you'll be fine but it's safer to close all files - for the operating system that means shutting it down. In other words if you backup a file while it is being edited you might have backed up a corrupted file. Some software doesn't guarantee that files on the disk are always in a consistent state. It depends on the nature of your software if this might cause major headaches. If your directory with the pictures happens to be copied at the very beginning of your backup and the database at the end you might end up with a backup that has a database containing the new pictures but is missing the corresponding images. Example: You are running a photo gallery on your Raspi and while the backup is underway a user imports new pictures which results in the pictures being written to the filesystem and some entries being written to a separate database file. There are a few potential pitfalls, though:įiles will be copied one-by-one so in cases where multiple files belong together they might end up out-of-sync. A backup (if done correctly) will allow you to restore the installed software, your configuration, device nodes in /dev/ etc. Technically you're right, most things in Linux are stored on the filesystem. ![]() Rsync is a great tool if you need to create a backup of some files/directories - in particular if many large files need to be backed up that rarely change (rsync will only transfer the ones that changed). Is my understanding correct? What if the original is damaged beyond redemption? I am a beginner at best when it comes to linux and grateful for any help. Restore the root folder with all its contents from the back-up medium to the original SD card with rysnc.Īnd presto! The corrupted card springs back to life as if nothing happened, all software and data intact.Mount the (corrupt) SD card and the back-up medium.Boot the Pi from a USB stick (not supported by all models of Pi.).My interpretation is when the Pi's SD card gets corrupted, do the following: I struggle to understand how this will work in practice with Raspberry Pi. There is also this solution proposed in a linux journal that appears to suggest the entire system can be backed-up and restored with rsync. Since everything is a file in Linux, will this software also be reinstalled simply by including the folders where software is installed in the back-up copy of the root file-system? For example, I have Arduino IDE installed. Some of the software is installed outside of the package manager. ![]() Does this mean that including these folders in the back-up copy of the root file-system is sufficient by itself to restore the software in the event of corruption (without the need for reinstallation)? " Further, I have read that the built-in package manager will add files in a standard location, such as /usr/lib or /opt. ![]() I have read that "everything is a file in Linux. This software is time-consuming to install.
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