Veeam | kb4183

This article documents rare issues that may be experienced when using the Veeam Recovery Media for Linux OSs and workarounds for them. Veeam Recovery Media fails to boot from a USB flash drive created with third-party ISO flashing software. Challenge A Linux machine cannot boot the Veeam Recovery Media from a USB flash drive created using a third-party tool to image the ISO onto the USB flash drive.  Cause Third-party ISO-to-USB imaging software may alter the way the image boots when writing the ISO contents to the flash drive. Workaround Write the ISO image to the USB flash drive using the dd command-line program. Example: sudo dd bs=4M if=/path/to/veeam-recovery.iso of=/dev/sdx status=progress oflag=sync Copy The if and of parameters in the command above will need to be adjusted for the environment. Some hardware is not recognized in the Veeam Recovery Media or you are unable to patch Veeam Recovery Media. Challenge Hardware is not recognized in the Veeam Recovery Media environment, and any of the following are also true: Using Custom Veeam Recovery Media also fails to recognize the hardware. Linux kernel in use was version 3.10 or older. Your distribution is SLES 15 SP4 or 15 SP5, OpenSUSE 15.4 or 15.5, or OpenSUSE Tumbleweed.   Workaround Create and boot into a Live CD of the Linux distro that is compatible with the hardware. Install Veeam Agent for Linux inside this Live CD environment.  Note: The veeamsnap kernel module is not required for restores, so to avoid installing kernel-headers, you may either install veeam-nosnap package or install the veeam package with broken veeamsnap dependency. Enable recovery UI by adding the following line to /etc/veeam/veeam.ini under the [recoveryui] section enableOnLiveSystem = 1 Copy Restart the veeamservice to apply changes: sudo service veeamservice restart Copy Open Recovery UI using the command: veeamconfig recoveryui Copy Patched Custom Veeam Recovery ISO does not start veeamservice on boot Challenge When booting from a recovery media image patched on specific Linux kernels, veeamservice does not start correctly. As a result, the recovery UI is inaccessible. The following output is displayed instead: Linux veeam-recovery-iso 4.18.0-240.22.1.e18_3.x86_64 #1 SMP Thu Mar 25 14:36:04 EDT 2021 X86_64 Welcome to Veeam Agent for Linux Recovery Media. To open Veeam Recovery UI execute 'sudo veeam'. No such file or directory Failed to connect: /var/tmp/veeam/socket/veeamservice.sock. Failed to connect to veeamservice daemon. To open Veeam Recovery UI execute 'sudo veeam'. Cause This is related to a squashfs bug 1/2/3 in Linux kernel 5.9, which appears in the Enterprise Linux distributions: RHEL 8.3 and specific versions of Oracle Linux.  Workaround To access the recovery UI, reboot and press TAB in the Boot menu of the Recovery Media. Add " selinux=0" to the end of the kernel command line and press Enter to finish the boot process. Veeam Recovery Media interface doesn't fit within the screen borders. Challenge Veeam Recovery Media interface doesn't fit within the screen borders. Cause The screen has a high resolution (1920x1080 and above). Veeam Recovery Media interface screen resolution is 1024x768 by default. This is related to the default video parameter in /boot/grub/grub.cfg: menuentry "Veeam Recovery 4.19.0-17-amd64" { linux /vmlinuz-4.19.0-17-amd64 usbcore.autosuspend=-1 vga=773 video=1024x768 boot=veeam-live initrd /initrd.img-4.19.0-17-amd64 } Workaround Reboot and press TAB in the Boot menu of the Recovery Media. Change the video parameter to the native display resolution and press Enter to finish the boot process.