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Diffstat (limited to 'fs/btrfs/dev-replace.c')
-rw-r--r--fs/btrfs/dev-replace.c55
1 files changed, 28 insertions, 27 deletions
diff --git a/fs/btrfs/dev-replace.c b/fs/btrfs/dev-replace.c
index d029be40ea6f..f26202621989 100644
--- a/fs/btrfs/dev-replace.c
+++ b/fs/btrfs/dev-replace.c
@@ -70,6 +70,7 @@ static int btrfs_dev_replace_kthread(void *data);
int btrfs_init_dev_replace(struct btrfs_fs_info *fs_info)
{
+ struct btrfs_dev_lookup_args args = { .devid = BTRFS_DEV_REPLACE_DEVID };
struct btrfs_key key;
struct btrfs_root *dev_root = fs_info->dev_root;
struct btrfs_dev_replace *dev_replace = &fs_info->dev_replace;
@@ -100,8 +101,7 @@ no_valid_dev_replace_entry_found:
* We don't have a replace item or it's corrupted. If there is
* a replace target, fail the mount.
*/
- if (btrfs_find_device(fs_info->fs_devices,
- BTRFS_DEV_REPLACE_DEVID, NULL, NULL)) {
+ if (btrfs_find_device(fs_info->fs_devices, &args)) {
btrfs_err(fs_info,
"found replace target device without a valid replace item");
ret = -EUCLEAN;
@@ -128,7 +128,7 @@ no_valid_dev_replace_entry_found:
}
slot = path->slots[0];
eb = path->nodes[0];
- item_size = btrfs_item_size_nr(eb, slot);
+ item_size = btrfs_item_size(eb, slot);
ptr = btrfs_item_ptr(eb, slot, struct btrfs_dev_replace_item);
if (item_size != sizeof(struct btrfs_dev_replace_item)) {
@@ -163,8 +163,7 @@ no_valid_dev_replace_entry_found:
* We don't have an active replace item but if there is a
* replace target, fail the mount.
*/
- if (btrfs_find_device(fs_info->fs_devices,
- BTRFS_DEV_REPLACE_DEVID, NULL, NULL)) {
+ if (btrfs_find_device(fs_info->fs_devices, &args)) {
btrfs_err(fs_info,
"replace devid present without an active replace item");
ret = -EUCLEAN;
@@ -175,11 +174,10 @@ no_valid_dev_replace_entry_found:
break;
case BTRFS_IOCTL_DEV_REPLACE_STATE_STARTED:
case BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED:
- dev_replace->srcdev = btrfs_find_device(fs_info->fs_devices,
- src_devid, NULL, NULL);
- dev_replace->tgtdev = btrfs_find_device(fs_info->fs_devices,
- BTRFS_DEV_REPLACE_DEVID,
- NULL, NULL);
+ dev_replace->tgtdev = btrfs_find_device(fs_info->fs_devices, &args);
+ args.devid = src_devid;
+ dev_replace->srcdev = btrfs_find_device(fs_info->fs_devices, &args);
+
/*
* allow 'btrfs dev replace_cancel' if src/tgt device is
* missing
@@ -245,6 +243,7 @@ static int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
struct btrfs_device *srcdev,
struct btrfs_device **device_out)
{
+ struct btrfs_fs_devices *fs_devices = fs_info->fs_devices;
struct btrfs_device *device;
struct block_device *bdev;
struct rcu_string *name;
@@ -273,7 +272,7 @@ static int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
sync_blockdev(bdev);
- list_for_each_entry(device, &fs_info->fs_devices->devices, dev_list) {
+ list_for_each_entry(device, &fs_devices->devices, dev_list) {
if (device->bdev == bdev) {
btrfs_err(fs_info,
"target device is in the filesystem!");
@@ -283,8 +282,7 @@ static int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
}
- if (i_size_read(bdev->bd_inode) <
- btrfs_device_get_total_bytes(srcdev)) {
+ if (bdev_nr_bytes(bdev) < btrfs_device_get_total_bytes(srcdev)) {
btrfs_err(fs_info,
"target device is smaller than source device!");
ret = -EINVAL;
@@ -305,6 +303,9 @@ static int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
goto error;
}
rcu_assign_pointer(device->name, name);
+ ret = lookup_bdev(device_path, &device->devt);
+ if (ret)
+ goto error;
set_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state);
device->generation = 0;
@@ -323,17 +324,17 @@ static int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
device->mode = FMODE_EXCL;
device->dev_stats_valid = 1;
set_blocksize(device->bdev, BTRFS_BDEV_BLOCKSIZE);
- device->fs_devices = fs_info->fs_devices;
+ device->fs_devices = fs_devices;
- ret = btrfs_get_dev_zone_info(device);
+ ret = btrfs_get_dev_zone_info(device, false);
if (ret)
goto error;
- mutex_lock(&fs_info->fs_devices->device_list_mutex);
- list_add(&device->dev_list, &fs_info->fs_devices->devices);
- fs_info->fs_devices->num_devices++;
- fs_info->fs_devices->open_devices++;
- mutex_unlock(&fs_info->fs_devices->device_list_mutex);
+ mutex_lock(&fs_devices->device_list_mutex);
+ list_add(&device->dev_list, &fs_devices->devices);
+ fs_devices->num_devices++;
+ fs_devices->open_devices++;
+ mutex_unlock(&fs_devices->device_list_mutex);
*device_out = device;
return 0;
@@ -384,7 +385,7 @@ int btrfs_run_dev_replace(struct btrfs_trans_handle *trans)
}
if (ret == 0 &&
- btrfs_item_size_nr(path->nodes[0], path->slots[0]) < sizeof(*ptr)) {
+ btrfs_item_size(path->nodes[0], path->slots[0]) < sizeof(*ptr)) {
/*
* need to delete old one and insert a new one.
* Since no attempt is made to recover any old state, if the
@@ -733,7 +734,12 @@ static int btrfs_dev_replace_start(struct btrfs_fs_info *fs_info,
btrfs_wait_ordered_roots(fs_info, U64_MAX, 0, (u64)-1);
- /* Commit dev_replace state and reserve 1 item for it. */
+ /*
+ * Commit dev_replace state and reserve 1 item for it.
+ * This is crucial to ensure we won't miss copying extents for new block
+ * groups that are allocated after we started the device replace, and
+ * must be done after setting up the device replace state.
+ */
trans = btrfs_start_transaction(root, 1);
if (IS_ERR(trans)) {
ret = PTR_ERR(trans);
@@ -909,9 +915,6 @@ static int btrfs_dev_replace_finishing(struct btrfs_fs_info *fs_info,
}
btrfs_wait_ordered_roots(fs_info, U64_MAX, 0, (u64)-1);
- if (!scrub_ret)
- btrfs_reada_remove_dev(src_device);
-
/*
* We have to use this loop approach because at this point src_device
* has to be available for transaction commit to complete, yet new
@@ -920,7 +923,6 @@ static int btrfs_dev_replace_finishing(struct btrfs_fs_info *fs_info,
while (1) {
trans = btrfs_start_transaction(root, 0);
if (IS_ERR(trans)) {
- btrfs_reada_undo_remove_dev(src_device);
mutex_unlock(&dev_replace->lock_finishing_cancel_unmount);
return PTR_ERR(trans);
}
@@ -971,7 +973,6 @@ error:
up_write(&dev_replace->rwsem);
mutex_unlock(&fs_info->chunk_mutex);
mutex_unlock(&fs_info->fs_devices->device_list_mutex);
- btrfs_reada_undo_remove_dev(src_device);
btrfs_rm_dev_replace_blocked(fs_info);
if (tgt_device)
btrfs_destroy_dev_replace_tgtdev(tgt_device);
generated by cgit v1.2.3 (git 2.39.0) at 2024-09-06 16:06:24 +0300