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1abe9b8a13
Tracepoints can provide insight into why btrfs hits bugs and be greatly
helpful for debugging, e.g
dd-7822 [000] 2121.641088: btrfs_inode_request: root = 5(FS_TREE), gen = 4, ino = 256, blocks = 8, disk_i_size = 0, last_trans = 8, logged_trans = 0
dd-7822 [000] 2121.641100: btrfs_inode_new: root = 5(FS_TREE), gen = 8, ino = 257, blocks = 0, disk_i_size = 0, last_trans = 0, logged_trans = 0
btrfs-transacti-7804 [001] 2146.935420: btrfs_cow_block: root = 2(EXTENT_TREE), refs = 2, orig_buf = 29368320 (orig_level = 0), cow_buf = 29388800 (cow_level = 0)
btrfs-transacti-7804 [001] 2146.935473: btrfs_cow_block: root = 1(ROOT_TREE), refs = 2, orig_buf = 29364224 (orig_level = 0), cow_buf = 29392896 (cow_level = 0)
btrfs-transacti-7804 [001] 2146.972221: btrfs_transaction_commit: root = 1(ROOT_TREE), gen = 8
flush-btrfs-2-7821 [001] 2155.824210: btrfs_chunk_alloc: root = 3(CHUNK_TREE), offset = 1103101952, size = 1073741824, num_stripes = 1, sub_stripes = 0, type = DATA
flush-btrfs-2-7821 [001] 2155.824241: btrfs_cow_block: root = 2(EXTENT_TREE), refs = 2, orig_buf = 29388800 (orig_level = 0), cow_buf = 29396992 (cow_level = 0)
flush-btrfs-2-7821 [001] 2155.824255: btrfs_cow_block: root = 4(DEV_TREE), refs = 2, orig_buf = 29372416 (orig_level = 0), cow_buf = 29401088 (cow_level = 0)
flush-btrfs-2-7821 [000] 2155.824329: btrfs_cow_block: root = 3(CHUNK_TREE), refs = 2, orig_buf = 20971520 (orig_level = 0), cow_buf = 20975616 (cow_level = 0)
btrfs-endio-wri-7800 [001] 2155.898019: btrfs_cow_block: root = 5(FS_TREE), refs = 2, orig_buf = 29384704 (orig_level = 0), cow_buf = 29405184 (cow_level = 0)
btrfs-endio-wri-7800 [001] 2155.898043: btrfs_cow_block: root = 7(CSUM_TREE), refs = 2, orig_buf = 29376512 (orig_level = 0), cow_buf =
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.. | ||
acl.c | ||
async-thread.c | ||
async-thread.h | ||
btrfs_inode.h | ||
compat.h | ||
compression.c | ||
compression.h | ||
ctree.c | ||
ctree.h | ||
delayed-ref.c | ||
delayed-ref.h | ||
dir-item.c | ||
disk-io.c | ||
disk-io.h | ||
export.c | ||
export.h | ||
extent_io.c | ||
extent_io.h | ||
extent_map.c | ||
extent_map.h | ||
extent-tree.c | ||
file-item.c | ||
file.c | ||
free-space-cache.c | ||
free-space-cache.h | ||
hash.h | ||
inode-item.c | ||
inode-map.c | ||
inode.c | ||
ioctl.c | ||
ioctl.h | ||
Kconfig | ||
locking.c | ||
locking.h | ||
lzo.c | ||
Makefile | ||
ordered-data.c | ||
ordered-data.h | ||
orphan.c | ||
print-tree.c | ||
print-tree.h | ||
ref-cache.c | ||
ref-cache.h | ||
relocation.c | ||
root-tree.c | ||
struct-funcs.c | ||
super.c | ||
sysfs.c | ||
transaction.c | ||
transaction.h | ||
tree-defrag.c | ||
tree-log.c | ||
tree-log.h | ||
version.h | ||
version.sh | ||
volumes.c | ||
volumes.h | ||
xattr.c | ||
xattr.h | ||
zlib.c |