Hi everyone, This one is meant to be a status update about where I am with online repair. The btree bulk loading code went upstream for 5.7, which will enable us to refactor a lot of boilerplate code out of xfs_repair. At this point, I have finished fleshing out nearly all of the online repair functionality. We can rebuild all per-AG btrees and the inode fork mapping btrees. With the deferred inactivation series and fs freezing, we can also rebuild the rmapbt and run quotacheck on a frozen filesystem, which means that quotas can be repaired too. More recently, I've written repair code for the realtime bitmap and summary files; and preliminary versions of extended attribute and directory salvaging. With the new atomic extent swap series, I can now commit rebuilt metadata atomically. However, the directory tree reconstruction part is /very/ difficult to achieve without parent pointers, since we cannot easily reconnect orphaned files without scanning the entire directory tree under fs freeze. We also can't do nlink verification easily without parent pointer validation. --D https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux.git/log/?h=scrub-rtsummary https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux.git/log/?h=repair-ag-btrees https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux.git/log/?h=repair-inodes https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux.git/log/?h=repair-inode-data https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux.git/log/?h=repair-fsfile-metadata https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux.git/log/?h=repair-metadata-atomically
