[Bug 2171359] Re: resolute: enable CONFIG_XFS_ONLINE_SCRUB (upstream default y since Linux 6.18)

** Tags added: kernel-daily-bug -- You received this bug notification because you are subscribed to linux in Ubuntu. Matching subscriptions: Bgg, Bmail, Nb https://bugs.launchpad.net/bugs/2171359 Title: resolute: enable CONFIG_XFS_ONLINE_SCRUB (upstream default y since Linux 6.18) Status in linux package in Ubuntu: New Bug description: The Ubuntu kernels for 26.04 are built without XFS online scrub, so xfs_scrub (xfsprogs) cannot check a mounted XFS filesystem. Expected: CONFIG_XFS_ONLINE_SCRUB=y, as in the upstream defconfig since Linux 6.18. Darrick Wong's Kconfig change made it default y: "Online fsck has been a part of upstream for over a year now without any serious problems. Turn it on by default in time for the 2025 LTS kernel". Actual: $ grep XFS_ONLINE_SCRUB /boot/config-7.0.0-31-generic # CONFIG_XFS_ONLINE_SCRUB is not set The same setting is in the configs shipped in linux- modules-7.0.0-38-generic and linux-modules-7.0.0-1015-oem, so no 26.04 flavour has it. Steps to reproduce: 1. On Ubuntu 26.04, create and mount any XFS v5 filesystem. 2. systemctl start xfs_scrub_all.service (the unit the package's weekly timer runs) 3. journalctl -u 'xfs_scrub_media@*' shows, for each filesystem: "Error: <mount>: Kernel metadata scrubbing facility is not available." "Info: <mount>: Scrub aborted after phase 1." Versions: Ubuntu 26.04.1 LTS Ubuntu 7.0.0-31.31-generic 7.0.14 (linux-image-7.0.0-31-generic 7.0.0-31.31) xfsprogs 6.18.0-3 Related: LP: #1810293 (the same request for an older release; expired 2026-04-13, reopened 2026-05-10, no triage). The bot's expiry comment asks for a new report against a supported kernel, which this is. Impact: xfsprogs ships xfs_scrub_all.timer enabled, so every 26.04 system with XFS runs a weekly check that cannot work on this kernel. That part is filed separately against xfsprogs; I will link it in a comment. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2171359/+subscriptions