How to restore system image of running Debian system?
You can then compress the lot and leave it somewhere safe. To restore, you’d use dd to restore the partition table and boot sectors, reload the partition table, make the new filesystem (s), and use cd /mnt/new-filesystem; restore -rf /some-location/sda1-root-level0.dump.
Which is the upstream version of the Debian kernel?
“4.9.144-3.1” is the package version of the kernel. This follows the standard Debian versioning scheme: 4.9.144 is the upstream kernel version, which you can match up to upstream kernel releases, and 3.1 is the version of the packaging.
What are the requirements for a Linux image?
A Linux or Unix-like system that meets all of the requirements listed in the Custom Images product documentation. For example, your boot disk must have: A non-root user with administrative privileges available to you on the system you’re imaging.
Why do we need to do minimal upgrades in Debian?
If the system being upgraded provides critical services for your users or the network [2], you can reduce the downtime if you do a minimal system upgrade, as described in Section 4.4.4, “Minimal system upgrade”, followed by a kernel upgrade and reboot, and then upgrade the packages associated with your critical services.
Can a Debian system image be run with QEMU?
I am trying to set-up a full system image for ARM ( armhf, armel or even aarch64) based on Debian that can be run with QEMU. Unfortunately, all the examples that I found on the Web start the image by passing the kernel (and possibly the initrd if it requires some modules).
Where can I get a base image for Debian?
If you really want to go from the ground up, the Debian User Aurel32 has maintained for years a set of base images ready to boot as well as a great writeup on their blog of a similar process. Thanks for contributing an answer to Unix & Linux Stack Exchange!
Is it possible to backup a running Debian system?
Is it possible to backup a running Debian system to some kind of image file, that could simply be written back to another hard disk using dd in case of failures of the original (backed up) Debian system?