We are a company operating under ISO 27001 and ENS certifications, relying on AlmaLinux 9.5 as part of our secure production infrastructure. For months, we have been reporting the incompatibility of Synology’s Active Backup for Business agent with this OS version.
AlmaLinux 9.5 (fully binary-compatible with RHEL 9.5) was released on November 7, 2023, and includes kernel version 5.14.0-362. On March 18, 2024, Synology released a new version of the backup agent — yet the issue persists, and the agent still fails to compile or run on modern systems.
The main issue involves deprecated kernel functions such as blkdev_put(), causing compilation errors when building the agent module. This effectively blocks the adoption of up-to-date RHEL-based distributions without sacrificing our backup solution.
As paying customers, we refuse to downgrade or compromise our security posture due to outdated compatibility policies. We demand immediate resolution and official support for RHEL 9.5+ platforms.
Are others facing the same problem? Have you found reliable, secure alternatives that work with modern kernels without patching or using obsolete versions?