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Diffstat (limited to 'fs/btrfs/volumes.c')
-rw-r--r--fs/btrfs/volumes.c109
1 files changed, 65 insertions, 44 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index a6df8fdc1312..c32abbca9d77 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -125,6 +125,7 @@ static int btrfs_relocate_sys_chunks(struct btrfs_root *root);
static void __btrfs_reset_dev_stats(struct btrfs_device *dev);
static void btrfs_dev_stat_print_on_error(struct btrfs_device *dev);
static void btrfs_dev_stat_print_on_load(struct btrfs_device *device);
+static void btrfs_close_one_device(struct btrfs_device *device);
DEFINE_MUTEX(uuid_mutex);
static LIST_HEAD(fs_uuids);
@@ -1102,7 +1103,7 @@ int btrfs_account_dev_extents_size(struct btrfs_device *device, u64 start,
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
- path->reada = 2;
+ path->reada = READA_FORWARD;
key.objectid = device->devid;
key.offset = start;
@@ -1257,6 +1258,15 @@ int find_free_dev_extent_start(struct btrfs_transaction *transaction,
int ret;
int slot;
struct extent_buffer *l;
+ u64 min_search_start;
+
+ /*
+ * We don't want to overwrite the superblock on the drive nor any area
+ * used by the boot loader (grub for example), so we make sure to start
+ * at an offset of at least 1MB.
+ */
+ min_search_start = max(root->fs_info->alloc_start, 1024ull * 1024);
+ search_start = max(search_start, min_search_start);
path = btrfs_alloc_path();
if (!path)
@@ -1271,7 +1281,7 @@ again:
goto out;
}
- path->reada = 2;
+ path->reada = READA_FORWARD;
path->search_commit_root = 1;
path->skip_locking = 1;
@@ -1397,18 +1407,9 @@ int find_free_dev_extent(struct btrfs_trans_handle *trans,
struct btrfs_device *device, u64 num_bytes,
u64 *start, u64 *len)
{
- struct btrfs_root *root = device->dev_root;
- u64 search_start;
-
/* FIXME use last free of some kind */
-
- /*
- * we don't want to overwrite the superblock on the drive,
- * so we make sure to start at an offset of at least 1MB
- */
- search_start = max(root->fs_info->alloc_start, 1024ull * 1024);
return find_free_dev_extent_start(trans->transaction, device,
- num_bytes, search_start, start, len);
+ num_bytes, 0, start, len);
}
static int btrfs_free_dev_extent(struct btrfs_trans_handle *trans,
@@ -1642,7 +1643,6 @@ static void update_dev_time(char *path_name)
return;
file_update_time(filp);
filp_close(filp, NULL);
- return;
}
static int btrfs_rm_dev_item(struct btrfs_root *root,
@@ -1973,8 +1973,7 @@ void btrfs_rm_dev_replace_remove_srcdev(struct btrfs_fs_info *fs_info,
if (srcdev->writeable) {
fs_devices->rw_devices--;
/* zero out the old super if it is writable */
- btrfs_scratch_superblocks(srcdev->bdev,
- rcu_str_deref(srcdev->name));
+ btrfs_scratch_superblocks(srcdev->bdev, srcdev->name->str);
}
if (srcdev->bdev)
@@ -2024,8 +2023,7 @@ void btrfs_destroy_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
btrfs_sysfs_rm_device_link(fs_info->fs_devices, tgtdev);
if (tgtdev->bdev) {
- btrfs_scratch_superblocks(tgtdev->bdev,
- rcu_str_deref(tgtdev->name));
+ btrfs_scratch_superblocks(tgtdev->bdev, tgtdev->name->str);
fs_info->fs_devices->open_devices--;
}
fs_info->fs_devices->num_devices--;
@@ -2853,7 +2851,8 @@ static int btrfs_relocate_chunk(struct btrfs_root *root, u64 chunk_offset)
if (ret)
return ret;
- trans = btrfs_start_transaction(root, 0);
+ trans = btrfs_start_trans_remove_block_group(root->fs_info,
+ chunk_offset);
if (IS_ERR(trans)) {
ret = PTR_ERR(trans);
btrfs_std_error(root->fs_info, ret, NULL);
@@ -3123,7 +3122,7 @@ static int chunk_profiles_filter(u64 chunk_type,
return 1;
}
-static int chunk_usage_filter(struct btrfs_fs_info *fs_info, u64 chunk_offset,
+static int chunk_usage_range_filter(struct btrfs_fs_info *fs_info, u64 chunk_offset,
struct btrfs_balance_args *bargs)
{
struct btrfs_block_group_cache *cache;
@@ -3156,7 +3155,7 @@ static int chunk_usage_filter(struct btrfs_fs_info *fs_info, u64 chunk_offset,
return ret;
}
-static int chunk_usage_range_filter(struct btrfs_fs_info *fs_info,
+static int chunk_usage_filter(struct btrfs_fs_info *fs_info,
u64 chunk_offset, struct btrfs_balance_args *bargs)
{
struct btrfs_block_group_cache *cache;
@@ -3407,7 +3406,7 @@ static int __btrfs_balance(struct btrfs_fs_info *fs_info)
list_for_each_entry(device, devices, dev_list) {
old_size = btrfs_device_get_total_bytes(device);
size_to_free = div_factor(old_size, 1);
- size_to_free = min(size_to_free, (u64)1 * 1024 * 1024);
+ size_to_free = min_t(u64, size_to_free, SZ_1M);
if (!device->writeable ||
btrfs_device_get_total_bytes(device) -
btrfs_device_get_bytes_used(device) > size_to_free ||
@@ -3549,12 +3548,11 @@ again:
ret = btrfs_force_chunk_alloc(trans, chunk_root,
BTRFS_BLOCK_GROUP_DATA);
+ btrfs_end_transaction(trans, chunk_root);
if (ret < 0) {
mutex_unlock(&fs_info->delete_unused_bgs_mutex);
goto error;
}
-
- btrfs_end_transaction(trans, chunk_root);
chunk_reserved = 1;
}
@@ -3725,14 +3723,6 @@ int btrfs_balance(struct btrfs_balance_control *bctl,
goto out;
}
- /* allow dup'ed data chunks only in mixed mode */
- if (!mixed && (bctl->data.flags & BTRFS_BALANCE_ARGS_CONVERT) &&
- (bctl->data.target & BTRFS_BLOCK_GROUP_DUP)) {
- btrfs_err(fs_info, "dup for data is not allowed");
- ret = -EINVAL;
- goto out;
- }
-
/* allow to reduce meta or sys integrity only if force set */
allowed = BTRFS_BLOCK_GROUP_DUP | BTRFS_BLOCK_GROUP_RAID1 |
BTRFS_BLOCK_GROUP_RAID10 |
@@ -3758,6 +3748,13 @@ int btrfs_balance(struct btrfs_balance_control *bctl,
}
} while (read_seqretry(&fs_info->profiles_lock, seq));
+ if (btrfs_get_num_tolerated_disk_barrier_failures(bctl->meta.target) <
+ btrfs_get_num_tolerated_disk_barrier_failures(bctl->data.target)) {
+ btrfs_warn(fs_info,
+ "metatdata profile 0x%llx has lower redundancy than data profile 0x%llx",
+ bctl->meta.target, bctl->data.target);
+ }
+
if (bctl->sys.flags & BTRFS_BALANCE_ARGS_CONVERT) {
fs_info->num_tolerated_disk_barrier_failures = min(
btrfs_calc_num_tolerated_disk_barrier_failures(fs_info),
@@ -4270,7 +4267,7 @@ int btrfs_shrink_device(struct btrfs_device *device, u64 new_size)
if (!path)
return -ENOMEM;
- path->reada = 2;
+ path->reada = READA_FORWARD;
lock_chunks(root);
@@ -4462,7 +4459,7 @@ static int btrfs_cmp_device_info(const void *a, const void *b)
static u32 find_raid56_stripe_len(u32 data_devices, u32 dev_stripe_target)
{
/* TODO allow them to set a preferred stripe size */
- return 64 * 1024;
+ return SZ_64K;
}
static void check_raid56_incompat_flag(struct btrfs_fs_info *info, u64 type)
@@ -4530,21 +4527,21 @@ static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
ncopies = btrfs_raid_array[index].ncopies;
if (type & BTRFS_BLOCK_GROUP_DATA) {
- max_stripe_size = 1024 * 1024 * 1024;
+ max_stripe_size = SZ_1G;
max_chunk_size = 10 * max_stripe_size;
if (!devs_max)
devs_max = BTRFS_MAX_DEVS(info->chunk_root);
} else if (type & BTRFS_BLOCK_GROUP_METADATA) {
/* for larger filesystems, use larger metadata chunks */
- if (fs_devices->total_rw_bytes > 50ULL * 1024 * 1024 * 1024)
- max_stripe_size = 1024 * 1024 * 1024;
+ if (fs_devices->total_rw_bytes > 50ULL * SZ_1G)
+ max_stripe_size = SZ_1G;
else
- max_stripe_size = 256 * 1024 * 1024;
+ max_stripe_size = SZ_256M;
max_chunk_size = max_stripe_size;
if (!devs_max)
devs_max = BTRFS_MAX_DEVS(info->chunk_root);
} else if (type & BTRFS_BLOCK_GROUP_SYSTEM) {
- max_stripe_size = 32 * 1024 * 1024;
+ max_stripe_size = SZ_32M;
max_chunk_size = 2 * max_stripe_size;
if (!devs_max)
devs_max = BTRFS_MAX_DEVS_SYS_CHUNK;
@@ -4795,7 +4792,7 @@ int btrfs_finish_chunk_alloc(struct btrfs_trans_handle *trans,
u64 dev_offset;
u64 stripe_size;
int i = 0;
- int ret;
+ int ret = 0;
em_tree = &extent_root->fs_info->mapping_tree.map_tree;
read_lock(&em_tree->lock);
@@ -4826,20 +4823,32 @@ int btrfs_finish_chunk_alloc(struct btrfs_trans_handle *trans,
goto out;
}
+ /*
+ * Take the device list mutex to prevent races with the final phase of
+ * a device replace operation that replaces the device object associated
+ * with the map's stripes, because the device object's id can change
+ * at any time during that final phase of the device replace operation
+ * (dev-replace.c:btrfs_dev_replace_finishing()).
+ */
+ mutex_lock(&chunk_root->fs_info->fs_devices->device_list_mutex);
for (i = 0; i < map->num_stripes; i++) {
device = map->stripes[i].dev;
dev_offset = map->stripes[i].physical;
ret = btrfs_update_device(trans, device);
if (ret)
- goto out;
+ break;
ret = btrfs_alloc_dev_extent(trans, device,
chunk_root->root_key.objectid,
BTRFS_FIRST_CHUNK_TREE_OBJECTID,
chunk_offset, dev_offset,
stripe_size);
if (ret)
- goto out;
+ break;
+ }
+ if (ret) {
+ mutex_unlock(&chunk_root->fs_info->fs_devices->device_list_mutex);
+ goto out;
}
stripe = &chunk->stripe;
@@ -4852,6 +4861,7 @@ int btrfs_finish_chunk_alloc(struct btrfs_trans_handle *trans,
memcpy(stripe->dev_uuid, device->uuid, BTRFS_UUID_SIZE);
stripe++;
}
+ mutex_unlock(&chunk_root->fs_info->fs_devices->device_list_mutex);
btrfs_set_stack_chunk_length(chunk, chunk_size);
btrfs_set_stack_chunk_owner(chunk, extent_root->root_key.objectid);
@@ -6467,11 +6477,11 @@ int btrfs_read_sys_array(struct btrfs_root *root)
sb = btrfs_find_create_tree_block(root, BTRFS_SUPER_INFO_OFFSET);
if (!sb)
return -ENOMEM;
- btrfs_set_buffer_uptodate(sb);
+ set_extent_buffer_uptodate(sb);
btrfs_set_buffer_lockdep_class(root->root_key.objectid, sb, 0);
/*
* The sb extent buffer is artifical and just used to read the system array.
- * btrfs_set_buffer_uptodate() call does not properly mark all it's
+ * set_extent_buffer_uptodate() call does not properly mark all it's
* pages up-to-date when the page is larger: extent does not cover the
* whole page and consequently check_page_uptodate does not find all
* the page's extents up-to-date (the hole beyond sb),
@@ -6514,6 +6524,14 @@ int btrfs_read_sys_array(struct btrfs_root *root)
goto out_short_read;
num_stripes = btrfs_chunk_num_stripes(sb, chunk);
+ if (!num_stripes) {
+ printk(KERN_ERR
+ "BTRFS: invalid number of stripes %u in sys_array at offset %u\n",
+ num_stripes, cur_offset);
+ ret = -EIO;
+ break;
+ }
+
len = btrfs_chunk_item_size(num_stripes);
if (cur_offset + len > array_size)
goto out_short_read;
@@ -6522,6 +6540,9 @@ int btrfs_read_sys_array(struct btrfs_root *root)
if (ret)
break;
} else {
+ printk(KERN_ERR
+ "BTRFS: unexpected item type %u in sys_array at offset %u\n",
+ (u32)key.type, cur_offset);
ret = -EIO;
break;
}
@@ -6951,7 +6972,7 @@ void btrfs_reset_fs_info_ptr(struct btrfs_fs_info *fs_info)
}
}
-void btrfs_close_one_device(struct btrfs_device *device)
+static void btrfs_close_one_device(struct btrfs_device *device)
{
struct btrfs_fs_devices *fs_devices = device->fs_devices;
struct btrfs_device *new_device;
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-04 06:33:03 +0100