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btrfs-progs: only print the parent or ref root for ref mismatches

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While debugging some corruption, I got confused because it appeared as
if we had an invalid parent set on a extent reference, because of this
message:

  tree backref 67014213632 parent 5 root 5 not found in extent tree

But it turns out that parent and the root are a union, and we were just
printing it out regardless of the type of backref it was.  Fix the error
message to be consistent with the other mismatch messages, simply print
parent or root, depending on the ref type.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik 2020-11-19 10:42:12 -05:00 committed by David Sterba
parent 5f7191135f
commit bc06a75a04
1 changed files with 4 additions and 2 deletions
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6
check/main.c
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@ -3936,9 +3936,11 @@ static int all_backpointers_checked(struct extent_record *rec, int print_errs)
} else {
tback = to_tree_backref(back);
fprintf(stderr,
"tree backref %llu parent %llu root %llu not found in extent tree\n",
"tree backref %llu %s %llu not found in extent tree\n",
(unsigned long long)rec->start,
(unsigned long long)tback->parent,
back->full_backref ? "parent" : "root",
back->full_backref ?
(unsigned long long)tback->parent :
(unsigned long long)tback->root);
}
}