btrfs-progs/check
Qu Wenruo b9ea7c1b23 btrfs-progs: check/original: Add check and repair for invalid inode generation
There are at least two bug reports of kernel tree-checker complaining
about invalid inode generation.

All offending inodes seem to be caused by old kernel around 2014, with
inode generation overflow.

So add such check and repair ability to lowmem mode check first.

This involves:

- Calculate the inode generation upper limit
  Unlike the lowmem mode context, we don't have anyway to determine if
  this inode belongs to log tree.
  So we use super_generation + 1 as upper limit, just like what we did
  in kernel tree checker.

- Check if the inode generation is larger than the upper limit

- Repair by resetting inode generation to current transaction
  generation
  The difference is, in original mode, we have a common trans handle for
  all repair and reset path for each repair.

Reported-by: Charles Wright <charles.v.wright@gmail.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Tested-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2019-11-18 19:21:07 +01:00
..
common.h btrfs-progs: check: move device_record to main.c 2019-10-14 17:27:41 +02:00
main.c btrfs-progs: check/original: Add check and repair for invalid inode generation 2019-11-18 19:21:07 +01:00
mode-common.c btrfs-progs: check/original: Fix inode mode in subvolume trees 2019-11-18 19:21:07 +01:00
mode-common.h btrfs-progs: check/original: Fix inode mode in subvolume trees 2019-11-18 19:21:07 +01:00
mode-lowmem.c btrfs-progs: check/lowmem: Add check and repair for invalid inode generation 2019-11-18 19:21:07 +01:00
mode-lowmem.h btrfs-progs: check/lowmem: Check and repair root generation 2019-09-04 16:06:50 +02:00
mode-original.h btrfs-progs: check/original: Add check and repair for invalid inode generation 2019-11-18 19:21:07 +01:00
qgroup-verify.c btrfs-progs: move qgroup-verify.[ch] to check/ 2019-10-14 17:27:35 +02:00
qgroup-verify.h btrfs-progs: move qgroup-verify.[ch] to check/ 2019-10-14 17:27:35 +02:00