Raspberry Archive - Pixelfriedhof

Protect the Raspberry Pi file system from malfunction in case of power failure

megaadmin — Sun, 04 Aug 2019 12:55:05 +0000

The Raspberry Pi’s SD card is vulnerable to file system failure in the event of a power failure. A small UPS called StromPi solves the problem of defective file systems.

For the Raspberry Pi to shut down gently in the event of a voltage loss, the so-called StromPi can be used. This plug-in board detects a voltage drop and then initiates the necessary steps to shut down the Raspberry Pi. The file system on your SD card will be shut down as usual.

StromPi 18620 3 - Power Solution für Raspberry Pi*

StromPi 3
Stromversorgung

In order for the Raspberry Pi to have enough power available for the shutdown process, you will also need this battery unit:

Batterieeinheit für StromPi 3*

StromPi 3
Stromversorgung

So the next power outage can come – your Raspberry should now bott up as usual, even if the power was gone.

All the links in this text are Amazon Affiliate Links, and by clicking on an affiliate link I will earn a percentage of your subsequent Amazon purchases. However, this circumstance does not influence the background of my product recommendation. This product recommendation is independent, honest and sincere.

Bei allen genannten Links handelt es sich um Amazon-Affiliate-Links. Durch einen Klick auf einen Affiliate-Link werde ich prozentual an Euren darauf folgenden Amazon-Einkäufen beteiligt. Dieser Umstand beeinflusst aber nicht die Hintergründe meiner Produktempfehlung. Diese Produktempfehlung erfolgt unabhängig, ehrlich und aufrichtig.

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Restore SD card images reliably with graphical user interface

megaadmin — Tue, 13 Feb 2018 17:34:49 +0000

If you want to restore a previously saved image of an SD card, you can often use various command line tools such as the terminal. Restoration can easily become a pain: The progress of the recovery is not displayed or the recovery is simply unreliable – the SD card in Raspberry Pi still doesn’t want to boot at the end. A new tool for Mac, Windows and Linux with graphical user interface solves the problem: Etcher.

If you use your Raspberry Pi or other single-board computers in not necessarily gentle environments, you know that the file system can suffer unpredictable power fluctuations. Often only a restore of a previously (hopefully) made backup or the repair of the SD card’s file system on a Linux host will help.

However, as I usually have current backups and only rarely use the log data that has been generated in the meantime, I usually use the SD card for this purpose. And that’s a pain in the ass every single time.
The image does not fit to the physical size of the SD card, the image was written unreliably (checksum error) and in the end my Raspberry won’t boot from the card. All over again…

This is over now, because there is a new tool now: Etcher is an open source program for reliable recovery of SD card images with graphical user interface. It not only recovers the SD card from ALL common backup formats (. gz,. zip,. img etc.), it also checks the target card and configures it accordingly and then verifies the written image.

If Etcher says that the image was written successfully, the SD card will work in the target device. You can count on it.
You can find the excellent tool here: https://etcher.io/

Der Beitrag Restore SD card images reliably with graphical user interface erschien zuerst auf Pixelfriedhof.

Remote Backup your Raspberry Pi with SSH via Terminal

megaadmin — Sat, 02 Dec 2017 08:03:20 +0000

Backing up the SD card of the Raspberry Pi is really time consuming. Switch off the Raspberry, remove the card, insert the card into the computer, create an image of the SD card, switch the card back into the Raspberry, switch it on again. Lots of manual work and downtime for the duration of the backup. Reason enough to do it all remotely via terminal session. These are the instructions for creating and restoring the backup. Works for backups of SD cards on any Linux system.

Create Backup

Open the terminal session and fire the following line, adjusting the red parts (IP address of the raspberry and file name of the backup):

ssh pi@192.168.10.11 “sudo dd if=/dev/mmcblk0 bs=1M | gzip -” | dd of=~/Desktop/backup_2017-11-14.gz

The system then asks for the given password for the user “pi”. Enter the password and then WAIT FOR A LONG TIME, even if the system does not display any updates during the process.

Fun Fact: If you are on the Mac, you can check the current status of your backup with “CTRL”+”T”. You can press the combination infinitely often during the transfer to display the transferred bytes.

When the backup is complete, your input line will reappear in the terminal.

For best performance I recommend this SD-card: http://amzn.to/2BDuGyX (Affiliate-Link)
Further on I recommend this Raspberry Pi Starter Set: http://amzn.to/2BERjDw (Affiliate-Link)

Restore Backup

Recovery does not work remotely. After all, the system would be flattened at runtime. It would be exactly like cutting the famous branch you are sitting on. If that was possible, it would be an security risk. Here you really have to grab the card and create the SD card from the backup on an external system.

Open the terminal session and fire the following line, adjusting the red parts (target disk {SD card} and file name of the backup):

diskutil unmountDisk /dev/disk1
gzip -dc ~/Desktop/backup_2017-11-14.gz | sudo dd of=/dev/rdisk1 bs=1m conv=noerror,sync

Bei allen genannten Links in der Videobeschreibung handelt es sich um Amazon-Affiliate-Links.Durch einen Klick auf einen Affiliate-Link werde ich prozentual an Euren darauf folgenden Amazon-Einkäufen beteiligt. Dieser Umstand beeinflusst aber nicht die Hintergründe meiner Produktempfehlung. Diese Produktempfehlung erfolgt unabhängig, ehrlich und aufrichtig.

Der Beitrag Remote Backup your Raspberry Pi with SSH via Terminal erschien zuerst auf Pixelfriedhof.