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btrfs-progs: Add support to suppress tree block csum error output 

Add new open ctree flag OPEN_CTREE_SUPPRESS_CHECK_BLOCK_ERRORS to
suppress tree block csum error output.

Provides the basis for new btrfs-find-root and other enhancement on
btrfs offline tools output.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
[renamed vars and funcs, added comments]
Signed-off-by: David Sterba <dsterba@suse.cz>
This commit is contained in:
Qu Wenruo 2015-01-16 11:04:09 +08:00 committed by David Sterba
parent 56e69234e4
commit 0c05f623b1
3 changed files with 22 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
ctree.h
View File

@ -998,6 +998,7 @@ struct btrfs_fs_info {
unsigned int on_restoring:1;
unsigned int is_chunk_recover:1;
unsigned int quota_enabled:1;
unsigned int suppress_check_block_errors:1;
int (*free_extent_hook)(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
@ -1006,6 +1007,7 @@ struct btrfs_fs_info {
int refs_to_drop);
struct cache_tree *fsck_extent_cache;
struct cache_tree *corrupt_blocks;
};
/*

23
disk-io.c
View File

@ -60,7 +60,7 @@ static int check_tree_block(struct btrfs_root *root, struct extent_buffer *buf)
return ret;
}
static void print_tree_block_err(struct btrfs_root *root,
static void print_tree_block_error(struct btrfs_root *root,
struct extent_buffer *eb,
int err)
{
@ -141,6 +141,8 @@ int csum_tree_block(struct btrfs_root *root, struct extent_buffer *buf,
{
u16 csum_size =
btrfs_super_csum_size(root->fs_info->super_copy);
if (verify && root->fs_info->suppress_check_block_errors)
return verify_tree_block_csum_silent(buf, csum_size);
return csum_tree_block_size(buf, csum_size, verify);
}
@ -291,8 +293,8 @@ struct extent_buffer *read_tree_block(struct btrfs_root *root, u64 bytenr,
while (1) {
ret = read_whole_eb(root->fs_info, eb, mirror_num);
if (ret == 0 && check_tree_block(root, eb) == 0 &&
csum_tree_block(root, eb, 1) == 0 &&
if (ret == 0 && csum_tree_block(root, eb, 1) == 0 &&
check_tree_block(root, eb) == 0 &&
verify_parent_transid(eb->tree, eb, parent_transid, ignore)
== 0) {
if (eb->flags & EXTENT_BAD_TRANSID &&
@ -305,11 +307,14 @@ struct extent_buffer *read_tree_block(struct btrfs_root *root, u64 bytenr,
return eb;
}
if (ignore) {
if (check_tree_block(root, eb))
print_tree_block_err(root, eb,
if (check_tree_block(root, eb)) {
if (!root->fs_info->suppress_check_block_errors)
print_tree_block_error(root, eb,
check_tree_block(root, eb));
else
printk("Csum didn't match\n");
} else {
if (!root->fs_info->suppress_check_block_errors)
fprintf(stderr, "Csum didn't match\n");
}
ret = -EIO;
break;
}
@ -371,7 +376,7 @@ static int write_tree_block(struct btrfs_trans_handle *trans,
struct extent_buffer *eb)
{
if (check_tree_block(root, eb)) {
print_tree_block_err(root, eb, check_tree_block(root, eb));
print_tree_block_error(root, eb, check_tree_block(root, eb));
BUG();
}
@ -1142,6 +1147,8 @@ static struct btrfs_fs_info *__open_ctree_fd(int fp, const char *path,
}
if (flags & OPEN_CTREE_RESTORE)
fs_info->on_restoring = 1;
if (flags & OPEN_CTREE_SUPPRESS_CHECK_BLOCK_ERRORS)
fs_info->suppress_check_block_errors = 1;
ret = btrfs_scan_fs_devices(fp, path, &fs_devices, sb_bytenr,
(flags & OPEN_CTREE_RECOVER_SUPER),

5
disk-io.h
View File

@ -34,6 +34,11 @@ enum btrfs_open_ctree_flags {
OPEN_CTREE_NO_BLOCK_GROUPS = (1 << 5),
OPEN_CTREE_EXCLUSIVE = (1 << 6),
OPEN_CTREE_NO_DEVICES = (1 << 7),
/*
* Don't print error messages if bytenr or checksums do not match in
* tree block headers. Turn on by OPEN_CTREE_SUPPRESS_ERROR
*/
OPEN_CTREE_SUPPRESS_CHECK_BLOCK_ERRORS = (1 << 8)
};
static inline u64 btrfs_sb_offset(int mirror)