Source: linux Followup-For: Bug #946791 Control: tags -1 + patch Dear Maintainer,
I reported that IOWeight config item in systemd has no effect on recent Debian kernels. I found the root cause. io.weight was changed to io.bfq.weight, and recent systemd sets values of IOWeight to io.bfq.weight as https://github.com/systemd/systemd/commit/2dbc45aea747f25cc1c3848fded2ec0062f96bcf For io.bfq.weight to appear in cgroup v2 filesystem, the bfq kernel module must be loaded. Addition of "bfq" to /etc/initramfs-tools/modules solved this issue. Since the systemd needs bfq module to be loaded, changing CONFIG_IOSCHED_BFQ=m to CONFIG_IOSCHED_BFQ=y in kernel config seems suitable. If the Debian kernel team considers this issue to be handled by another package, e.g. initramfs-tools or systemd, please reassign this. If this issue is considered not being a bug, please close this. Best regards, Ryutaroh Matsumoto -- System Information: Debian Release: bullseye/sid APT prefers testing APT policy: (990, 'testing'), (500, 'unstable'), (500, 'stable'), (1, 'experimental') Architecture: amd64 (x86_64) Kernel: Linux 5.4.0-trunk-amd64 (SMP w/2 CPU cores) Locale: LANG=ja_JP.UTF-8, LC_CTYPE=ja_JP.UTF-8 (charmap=UTF-8), LANGUAGE=ja_JP.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled