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btrfs-progs: print bytenr of child eb if mismatched level found in read_node_slot 

If btrfs check reported like

  ERROR: child eb corrupted: parent bytenr=178081 item=246 parent level=1 child level=2

It's hard to find which eb is corrupted without bytenr in dump tree
information:

  node 178081 level 1 items 424 free 69 generation 44495 owner EXTENT_TREE
  fs uuid 7d9dbe1b-dea6-4141-807b-026325123ad8
  chunk uuid 97a3e3aa-7105-4101-aaf7-50204a240e69
	  key (16613126144 EXTENT_ITEM 4096) block 177939087360 gen 44433
	  key (16632803328 EXTENT_ITEM 4096) block 177939120128 gen 44433
	  key (16654548992 EXTENT_ITEM 8192) block 177970380800 gen 44336
	  key (16697884672 EXTENT_ITEM 8192) block 177970397184 gen 44336
	  key (16714223616 EXTENT_ITEM 16384) block 177970413568 gen 44336
	  key (16721760256 EXTENT_ITEM 16384) block 177943855104 gen 44436
	  key (16857755648 EXTENT_ITEM 4096) block 177857544192 gen 44416
  ...

For easier lookup, print bytenr of child eb if its level is not equal
to parent's level - 1 in read_node_slot().

Signed-off-by: Su Yue <l@damenly.su>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Su Yue 2021-01-06 18:35:50 +08:00 committed by David Sterba
parent df2bdf97d2
commit be6710f89d
1 changed files with 3 additions and 3 deletions
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6
kernel-shared/ctree.c
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@ -809,9 +809,9 @@ struct extent_buffer *read_node_slot(struct btrfs_fs_info *fs_info,
if (btrfs_header_level(ret) != level - 1) {
error(
"child eb corrupted: parent bytenr=%llu item=%d parent level=%d child level=%d",
btrfs_header_bytenr(parent), slot,
btrfs_header_level(parent), btrfs_header_level(ret));
"child eb corrupted: parent bytenr=%llu item=%d parent level=%d child bytenr=%llu child level=%d",
btrfs_header_bytenr(parent), slot, btrfs_header_level(parent),
btrfs_header_bytenr(ret), btrfs_header_level(ret));
free_extent_buffer(ret);
return ERR_PTR(-EIO);
}