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Btrfs: ratelimit IO error printks

Browse source 
Btrfs has printks for various IO errors, including bad checksums and
mismatches between what we expect the block headers to contain and what
we actually find on the disk.

Longer term we need a real reporting mechanism for this, but for now
printk is going to have to do.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason 2009-04-27 07:29:05 -04:00
parent b7967db75a
commit 193f284d49
2 changed files with 31 additions and 17 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

38
fs/btrfs/disk-io.c
View file

@ -232,10 +232,14 @@ static int csum_tree_block(struct btrfs_root *root, struct extent_buffer *buf,
memcpy(&found, result, csum_size);
read_extent_buffer(buf, &val, 0, csum_size);
printk(KERN_INFO "btrfs: %s checksum verify failed "
"on %llu wanted %X found %X level %d\n",
root->fs_info->sb->s_id,
buf->start, val, found, btrfs_header_level(buf));
if (printk_ratelimit()) {
printk(KERN_INFO "btrfs: %s checksum verify "
"failed on %llu wanted %X found %X "
"level %d\n",
root->fs_info->sb->s_id,
(unsigned long long)buf->start, val, found,
btrfs_header_level(buf));
}
if (result != (char *)&inline_result)
kfree(result);
return 1;
@ -268,10 +272,13 @@ static int verify_parent_transid(struct extent_io_tree *io_tree,
ret = 0;
goto out;
}
printk("parent transid verify failed on %llu wanted %llu found %llu\n",
(unsigned long long)eb->start,
(unsigned long long)parent_transid,
(unsigned long long)btrfs_header_generation(eb));
if (printk_ratelimit()) {
printk("parent transid verify failed on %llu wanted %llu "
"found %llu\n",
(unsigned long long)eb->start,
(unsigned long long)parent_transid,
(unsigned long long)btrfs_header_generation(eb));
}
ret = 1;
clear_extent_buffer_uptodate(io_tree, eb);
out:
@ -415,9 +422,12 @@ static int btree_readpage_end_io_hook(struct page *page, u64 start, u64 end,
found_start = btrfs_header_bytenr(eb);
if (found_start != start) {
printk(KERN_INFO "btrfs bad tree block start %llu %llu\n",
(unsigned long long)found_start,
(unsigned long long)eb->start);
if (printk_ratelimit()) {
printk(KERN_INFO "btrfs bad tree block start "
"%llu %llu\n",
(unsigned long long)found_start,
(unsigned long long)eb->start);
}
ret = -EIO;
goto err;
}
@ -429,8 +439,10 @@ static int btree_readpage_end_io_hook(struct page *page, u64 start, u64 end,
goto err;
}
if (check_tree_block_fsid(root, eb)) {
printk(KERN_INFO "btrfs bad fsid on block %llu\n",
(unsigned long long)eb->start);
if (printk_ratelimit()) {
printk(KERN_INFO "btrfs bad fsid on block %llu\n",
(unsigned long long)eb->start);
}
ret = -EIO;
goto err;
}

10
fs/btrfs/inode.c
View file

@ -1823,10 +1823,12 @@ static int btrfs_readpage_end_io_hook(struct page *page, u64 start, u64 end,
return 0;
zeroit:
printk(KERN_INFO "btrfs csum failed ino %lu off %llu csum %u "
"private %llu\n", page->mapping->host->i_ino,
(unsigned long long)start, csum,
(unsigned long long)private);
if (printk_ratelimit()) {
printk(KERN_INFO "btrfs csum failed ino %lu off %llu csum %u "
"private %llu\n", page->mapping->host->i_ino,
(unsigned long long)start, csum,
(unsigned long long)private);
}
memset(kaddr + offset, 1, end - start + 1);
flush_dcache_page(page);
kunmap_atomic(kaddr, KM_USER0);