The below applies, in the form it is written in, to Debian 11 with kernel 5.10.x and newer, however the general considerations, mechanics, and approaches can apply to other versions of Debian 11 and its kernels, and to other Linux distributions as well (e.g. derivatives based on Debian (11)). This may also apply to Debian 10 (and derivates based on it) which use backported 5.10 or newer kernels (taken from Debian 11).
Acronis Cyber Protect Cloud: SnapAPI fails to build on Debian 11 kernel 5.10 with the message "Failed to find kernel's System.map file required for modules build"
Acronis Cyber Protect: Acronis Linux-based Bootable Media doesn't boot on QEMU/KVM virtual machines that use Cirrus virtual video adapter
- You are using QEMU/ KVM based Virtual Machines that have Cirrus/Cirrus Logic video adapter as a default adapter.
- You are trying to boot the VM using Acronis Linux-based Bootable Media (ISO)
- The boot fails with the error: "-sh: can't access tty; job control turned off"
Acronis Cyber Protect: Agent-based Backup of a Linux machine fails with "A request for disk information has timed out while backing up this system."
- Agent-based Backup of a Linux machine fails with: "A request for disk information has timed out while backing up this system. This is usually caused by corrupted disk layouts, system conflicts with removable drives, or other irregularities within the system. For details about how to resolve this issue, click 'Support'."
- However, when you check the machine's logs, there aren't any problems with disks, volumes, or file systems.
Backup of a Linux machine with kernel 5.9 or later fails with an error similar to:
The SnapAPI kernel module is not loaded for the kernel 5.12.13-300.fc34.x86_64 that is running in this system. Install the module for this kernel version, and then retry the backup.
Earlier versions of mainstream kernel did not have interfaces for snapshotting, and SnapAPI module could not use these kernels for snapshotting purposes.