summaryrefslogtreecommitdiffstats
path: root/fs/btrfs/relocation.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/btrfs/relocation.c')
-rw-r--r--fs/btrfs/relocation.c173
1 files changed, 149 insertions, 24 deletions
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index b26a5aea41b4..0ec8ffa37ab0 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -31,6 +31,7 @@
#include "async-thread.h"
#include "free-space-cache.h"
#include "inode-map.h"
+#include "qgroup.h"
/*
* backref_node, mapping_node and tree_block start with this
@@ -336,8 +337,9 @@ static void backref_tree_panic(struct rb_node *rb_node, int errno, u64 bytenr)
rb_node);
if (bnode->root)
fs_info = bnode->root->fs_info;
- btrfs_panic(fs_info, errno, "Inconsistency in backref cache "
- "found at offset %llu", bytenr);
+ btrfs_panic(fs_info, errno,
+ "Inconsistency in backref cache found at offset %llu",
+ bytenr);
}
/*
@@ -922,9 +924,16 @@ again:
path2->slots[level]--;
eb = path2->nodes[level];
- WARN_ON(btrfs_node_blockptr(eb, path2->slots[level]) !=
- cur->bytenr);
-
+ if (btrfs_node_blockptr(eb, path2->slots[level]) !=
+ cur->bytenr) {
+ btrfs_err(root->fs_info,
+ "couldn't find block (%llu) (level %d) in tree (%llu) with key (%llu %u %llu)",
+ cur->bytenr, level - 1, root->objectid,
+ node_key->objectid, node_key->type,
+ node_key->offset);
+ err = -ENOENT;
+ goto out;
+ }
lower = cur;
need_check = true;
for (; level < BTRFS_MAX_LEVEL; level++) {
@@ -1295,9 +1304,9 @@ static int __must_check __add_reloc_root(struct btrfs_root *root)
node->bytenr, &node->rb_node);
spin_unlock(&rc->reloc_root_tree.lock);
if (rb_node) {
- btrfs_panic(root->fs_info, -EEXIST, "Duplicate root found "
- "for start=%llu while inserting into relocation "
- "tree", node->bytenr);
+ btrfs_panic(root->fs_info, -EEXIST,
+ "Duplicate root found for start=%llu while inserting into relocation tree",
+ node->bytenr);
kfree(node);
return -EEXIST;
}
@@ -2349,6 +2358,10 @@ void free_reloc_roots(struct list_head *list)
while (!list_empty(list)) {
reloc_root = list_entry(list->next, struct btrfs_root,
root_list);
+ free_extent_buffer(reloc_root->node);
+ free_extent_buffer(reloc_root->commit_root);
+ reloc_root->node = NULL;
+ reloc_root->commit_root = NULL;
__del_reloc_root(reloc_root);
}
}
@@ -2685,11 +2698,15 @@ static int do_relocation(struct btrfs_trans_handle *trans,
if (!upper->eb) {
ret = btrfs_search_slot(trans, root, key, path, 0, 1);
- if (ret < 0) {
- err = ret;
+ if (ret) {
+ if (ret < 0)
+ err = ret;
+ else
+ err = -ENOENT;
+
+ btrfs_release_path(path);
break;
}
- BUG_ON(ret > 0);
if (!upper->eb) {
upper->eb = path->nodes[upper->level];
@@ -3037,15 +3054,19 @@ int prealloc_file_extent_cluster(struct inode *inode,
u64 num_bytes;
int nr = 0;
int ret = 0;
+ u64 prealloc_start = cluster->start - offset;
+ u64 prealloc_end = cluster->end - offset;
+ u64 cur_offset;
BUG_ON(cluster->start != cluster->boundary[0]);
inode_lock(inode);
- ret = btrfs_check_data_free_space(inode, cluster->start,
- cluster->end + 1 - cluster->start);
+ ret = btrfs_check_data_free_space(inode, prealloc_start,
+ prealloc_end + 1 - prealloc_start);
if (ret)
goto out;
+ cur_offset = prealloc_start;
while (nr < cluster->nr) {
start = cluster->boundary[nr] - offset;
if (nr + 1 < cluster->nr)
@@ -3055,16 +3076,21 @@ int prealloc_file_extent_cluster(struct inode *inode,
lock_extent(&BTRFS_I(inode)->io_tree, start, end);
num_bytes = end + 1 - start;
+ if (cur_offset < start)
+ btrfs_free_reserved_data_space(inode, cur_offset,
+ start - cur_offset);
ret = btrfs_prealloc_file_range(inode, 0, start,
num_bytes, num_bytes,
end + 1, &alloc_hint);
+ cur_offset = end + 1;
unlock_extent(&BTRFS_I(inode)->io_tree, start, end);
if (ret)
break;
nr++;
}
- btrfs_free_reserved_data_space(inode, cluster->start,
- cluster->end + 1 - cluster->start);
+ if (cur_offset < prealloc_end)
+ btrfs_free_reserved_data_space(inode, cur_offset,
+ prealloc_end + 1 - cur_offset);
out:
inode_unlock(inode);
return ret;
@@ -3193,7 +3219,7 @@ static int relocate_file_extent_cluster(struct inode *inode,
nr++;
}
- btrfs_set_extent_delalloc(inode, page_start, page_end, NULL);
+ btrfs_set_extent_delalloc(inode, page_start, page_end, NULL, 0);
set_page_dirty(page);
unlock_extent(&BTRFS_I(inode)->io_tree,
@@ -3916,6 +3942,90 @@ int prepare_to_relocate(struct reloc_control *rc)
return 0;
}
+/*
+ * Qgroup fixer for data chunk relocation.
+ * The data relocation is done in the following steps
+ * 1) Copy data extents into data reloc tree
+ * 2) Create tree reloc tree(special snapshot) for related subvolumes
+ * 3) Modify file extents in tree reloc tree
+ * 4) Merge tree reloc tree with original fs tree, by swapping tree blocks
+ *
+ * The problem is, data and tree reloc tree are not accounted to qgroup,
+ * and 4) will only info qgroup to track tree blocks change, not file extents
+ * in the tree blocks.
+ *
+ * The good news is, related data extents are all in data reloc tree, so we
+ * only need to info qgroup to track all file extents in data reloc tree
+ * before commit trans.
+ */
+static int qgroup_fix_relocated_data_extents(struct btrfs_trans_handle *trans,
+ struct reloc_control *rc)
+{
+ struct btrfs_fs_info *fs_info = rc->extent_root->fs_info;
+ struct inode *inode = rc->data_inode;
+ struct btrfs_root *data_reloc_root = BTRFS_I(inode)->root;
+ struct btrfs_path *path;
+ struct btrfs_key key;
+ int ret = 0;
+
+ if (!test_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags))
+ return 0;
+
+ /*
+ * Only for stage where we update data pointers the qgroup fix is
+ * valid.
+ * For MOVING_DATA stage, we will miss the timing of swapping tree
+ * blocks, and won't fix it.
+ */
+ if (!(rc->stage == UPDATE_DATA_PTRS && rc->extents_found))
+ return 0;
+
+ path = btrfs_alloc_path();
+ if (!path)
+ return -ENOMEM;
+ key.objectid = btrfs_ino(inode);
+ key.type = BTRFS_EXTENT_DATA_KEY;
+ key.offset = 0;
+
+ ret = btrfs_search_slot(NULL, data_reloc_root, &key, path, 0, 0);
+ if (ret < 0)
+ goto out;
+
+ lock_extent(&BTRFS_I(inode)->io_tree, 0, (u64)-1);
+ while (1) {
+ struct btrfs_file_extent_item *fi;
+
+ btrfs_item_key_to_cpu(path->nodes[0], &key, path->slots[0]);
+ if (key.objectid > btrfs_ino(inode))
+ break;
+ if (key.type != BTRFS_EXTENT_DATA_KEY)
+ goto next;
+ fi = btrfs_item_ptr(path->nodes[0], path->slots[0],
+ struct btrfs_file_extent_item);
+ if (btrfs_file_extent_type(path->nodes[0], fi) !=
+ BTRFS_FILE_EXTENT_REG)
+ goto next;
+ ret = btrfs_qgroup_insert_dirty_extent(trans, fs_info,
+ btrfs_file_extent_disk_bytenr(path->nodes[0], fi),
+ btrfs_file_extent_disk_num_bytes(path->nodes[0], fi),
+ GFP_NOFS);
+ if (ret < 0)
+ break;
+next:
+ ret = btrfs_next_item(data_reloc_root, path);
+ if (ret < 0)
+ break;
+ if (ret > 0) {
+ ret = 0;
+ break;
+ }
+ }
+ unlock_extent(&BTRFS_I(inode)->io_tree, 0 , (u64)-1);
+out:
+ btrfs_free_path(path);
+ return ret;
+}
+
static noinline_for_stack int relocate_block_group(struct reloc_control *rc)
{
struct rb_root blocks = RB_ROOT;
@@ -4102,10 +4212,18 @@ restart:
/* get rid of pinned extents */
trans = btrfs_join_transaction(rc->extent_root);
- if (IS_ERR(trans))
+ if (IS_ERR(trans)) {
err = PTR_ERR(trans);
- else
- btrfs_commit_transaction(trans, rc->extent_root);
+ goto out_free;
+ }
+ ret = qgroup_fix_relocated_data_extents(trans, rc);
+ if (ret < 0) {
+ btrfs_abort_transaction(trans, ret);
+ if (!err)
+ err = ret;
+ goto out_free;
+ }
+ btrfs_commit_transaction(trans, rc->extent_root);
out_free:
btrfs_free_block_rsv(rc->extent_root, rc->block_rsv);
btrfs_free_path(path);
@@ -4263,8 +4381,9 @@ int btrfs_relocate_block_group(struct btrfs_root *extent_root, u64 group_start)
goto out;
}
- btrfs_info(extent_root->fs_info, "relocating block group %llu flags %llu",
- rc->block_group->key.objectid, rc->block_group->flags);
+ btrfs_info(extent_root->fs_info,
+ "relocating block group %llu flags %llu",
+ rc->block_group->key.objectid, rc->block_group->flags);
btrfs_wait_block_group_reservations(rc->block_group);
btrfs_wait_nocow_writers(rc->block_group);
@@ -4468,10 +4587,16 @@ int btrfs_recover_relocation(struct btrfs_root *root)
unset_reloc_control(rc);
trans = btrfs_join_transaction(rc->extent_root);
- if (IS_ERR(trans))
+ if (IS_ERR(trans)) {
err = PTR_ERR(trans);
- else
- err = btrfs_commit_transaction(trans, rc->extent_root);
+ goto out_free;
+ }
+ err = qgroup_fix_relocated_data_extents(trans, rc);
+ if (err < 0) {
+ btrfs_abort_transaction(trans, err);
+ goto out_free;
+ }
+ err = btrfs_commit_transaction(trans, rc->extent_root);
out_free:
kfree(rc);
out:
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-03 17:31:03 +0100