This patchset can be fetched from github: https://github.com/adam900710/btrfs-progs/tree/file_extents_fixes The base commit is devel branch: commit e1e7519c2d225554004b55a5c19eb196db92285a (david/devel) Author: Qu Wenruo <wqu@xxxxxxxx> Date: Thu Oct 25 15:35:47 2018 +0800 btrfs-progs: tests: check: Make 026-bad-dir-item-name verify if btrfs-check can also repair Just remove the customized 'test.sh', then generic fsck test will do the check-repair-check. Originally for fsck-tests/001-bad-file-extent-bytenr we're going to fix it by resetting the corrupted file extent, using the disk bytenr from data backref. However in real world, extent tree is the most fragile one while fs tree is more reliable. This means fixing using extent tree can sometimes be more dangerous, and causing extra corruption from repair. Further more, that test case is a big blockage for any later modification on file extent repair code. So the goal of this patchset is to change the repair behavior from rebuilding file extents using data backref, to dropping invalid file extents and modify extent tree. Despite above change, we have some small bug fixes for: - False alert for file extents gap - Bad data backref -> file extent search in repair mode The patchset is mostly from Fujitsu guys (Lu, Su Yue, Su Yanjun). My work here is: - Solve rebase conflicts Mostly with DIR_ITEM hash mismatch patchset - Commit message/comment update Make them a little more reader friendly - Reorder the patchset Make small fixes first. Lu Fengqi (2): btrfs-progs: lowmem: fix false alert about the existence of gaps in the check_file_extent btrfs-progs: tests: add case for inode lose one file extent Su Yanjun (4): btrfs-progs: Revert "btrfs-progs: Add repair and report function for orphan file extent." btrfs-progs: Revert "btrfs-progs: Record orphan data extent ref to corresponding root." btrfs-progs: check: fix wrong @offset used in find_possible_backrefs() btrfs-progs: check: Delete file extent item with unaligned disk bytenr Su Yue (7): btrfs-progs: lowmem: add argument path to punch_extent_hole() btrfs-progs: lowmem: move nbytes check before isize check btrfs-progs: lowmem: fix false alert if extent item has been repaired btrfs-progs: lowmem: check unaligned disk_bytenr for extent_data btrfs-progs: lowmem: rename delete_extent_tree_item() to delete_item() btrfs-progs: lowmem: delete unaligned bytes extent data under repair btrfs-progs: fsck-test: enable lowmem repair for case 001 check/main.c | 584 +++++++++++------- check/mode-lowmem.c | 293 +++++---- check/mode-original.h | 30 +- ctree.h | 10 +- disk-io.c | 2 +- .../.lowmem_repairable | 0 .../.lowmem_repairable | 0 .../default_case.img | Bin 0 -> 3072 bytes 8 files changed, 543 insertions(+), 376 deletions(-) create mode 100644 tests/fsck-tests/001-bad-file-extent-bytenr/.lowmem_repairable create mode 100644 tests/fsck-tests/038-missing-one-file-extent/.lowmem_repairable create mode 100644 tests/fsck-tests/038-missing-one-file-extent/default_case.img -- 2.20.0
