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btrfs: Always output error message when key/level verification fails 

We have internal report of strange transaction abort due to EUCLEAN
without any error message.

Since error message inside verify_level_key() is only enabled for
CONFIG_BTRFS_DEBUG, the error message won't be printed on most builds.

This patch will make the error message mandatory, so when problem
happens we know what's causing the problem.

Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Qu Wenruo 2019-03-20 14:27:39 +08:00 committed by David Sterba
parent 448de471cd
commit 63489055e4
1 changed files with 4 additions and 6 deletions
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10
fs/btrfs/disk-io.c
View File

@ -404,12 +404,11 @@ int btrfs_verify_level_key(struct btrfs_fs_info *fs_info,
found_level = btrfs_header_level(eb);
if (found_level != level) {
#ifdef CONFIG_BTRFS_DEBUG
WARN_ON(1);
WARN(IS_ENABLED(CONFIG_BTRFS_DEBUG),
KERN_ERR "BTRFS: tree level check failed\n");
btrfs_err(fs_info,
"tree level mismatch detected, bytenr=%llu level expected=%u has=%u",
eb->start, level, found_level);
#endif
return -EIO;
}
@ -430,9 +429,9 @@ int btrfs_verify_level_key(struct btrfs_fs_info *fs_info,
btrfs_item_key_to_cpu(eb, &found_key, 0);
ret = btrfs_comp_cpu_keys(first_key, &found_key);
#ifdef CONFIG_BTRFS_DEBUG
if (ret) {
WARN_ON(1);
WARN(IS_ENABLED(CONFIG_BTRFS_DEBUG),
KERN_ERR "BTRFS: tree first key check failed\n");
btrfs_err(fs_info,
"tree first key mismatch detected, bytenr=%llu parent_transid=%llu key expected=(%llu,%u,%llu) has=(%llu,%u,%llu)",
eb->start, parent_transid, first_key->objectid,
@ -440,7 +439,6 @@ int btrfs_verify_level_key(struct btrfs_fs_info *fs_info,
found_key.objectid, found_key.type,
found_key.offset);
}
#endif
return ret;
}