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-rw-r--r--fs/btrfs/volumes.c122
1 files changed, 107 insertions, 15 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 49d7fab7336..ffeed6d6326 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -1452,6 +1452,22 @@ out:
return ret;
}
+/*
+ * Function to update ctime/mtime for a given device path.
+ * Mainly used for ctime/mtime based probe like libblkid.
+ */
+static void update_dev_time(char *path_name)
+{
+ struct file *filp;
+
+ filp = filp_open(path_name, O_RDWR, 0);
+ if (!filp)
+ return;
+ file_update_time(filp);
+ filp_close(filp, NULL);
+ return;
+}
+
static int btrfs_rm_dev_item(struct btrfs_root *root,
struct btrfs_device *device)
{
@@ -1674,11 +1690,12 @@ int btrfs_rm_device(struct btrfs_root *root, char *device_path)
struct btrfs_fs_devices *fs_devices;
fs_devices = root->fs_info->fs_devices;
while (fs_devices) {
- if (fs_devices->seed == cur_devices)
+ if (fs_devices->seed == cur_devices) {
+ fs_devices->seed = cur_devices->seed;
break;
+ }
fs_devices = fs_devices->seed;
}
- fs_devices->seed = cur_devices->seed;
cur_devices->seed = NULL;
lock_chunks(root);
__btrfs_close_devices(cur_devices);
@@ -1694,20 +1711,55 @@ int btrfs_rm_device(struct btrfs_root *root, char *device_path)
* remove it from the devices list and zero out the old super
*/
if (clear_super && disk_super) {
+ u64 bytenr;
+ int i;
+
/* make sure this device isn't detected as part of
* the FS anymore
*/
memset(&disk_super->magic, 0, sizeof(disk_super->magic));
set_buffer_dirty(bh);
sync_dirty_buffer(bh);
+
+ /* clear the mirror copies of super block on the disk
+ * being removed, 0th copy is been taken care above and
+ * the below would take of the rest
+ */
+ for (i = 1; i < BTRFS_SUPER_MIRROR_MAX; i++) {
+ bytenr = btrfs_sb_offset(i);
+ if (bytenr + BTRFS_SUPER_INFO_SIZE >=
+ i_size_read(bdev->bd_inode))
+ break;
+
+ brelse(bh);
+ bh = __bread(bdev, bytenr / 4096,
+ BTRFS_SUPER_INFO_SIZE);
+ if (!bh)
+ continue;
+
+ disk_super = (struct btrfs_super_block *)bh->b_data;
+
+ if (btrfs_super_bytenr(disk_super) != bytenr ||
+ btrfs_super_magic(disk_super) != BTRFS_MAGIC) {
+ continue;
+ }
+ memset(&disk_super->magic, 0,
+ sizeof(disk_super->magic));
+ set_buffer_dirty(bh);
+ sync_dirty_buffer(bh);
+ }
}
ret = 0;
- /* Notify udev that device has changed */
- if (bdev)
+ if (bdev) {
+ /* Notify udev that device has changed */
btrfs_kobject_uevent(bdev, KOBJ_CHANGE);
+ /* Update ctime/mtime for device path for libblkid */
+ update_dev_time(device_path);
+ }
+
error_brelse:
brelse(bh);
if (bdev)
@@ -1883,7 +1935,6 @@ static int btrfs_prepare_sprout(struct btrfs_root *root)
fs_devices->seeding = 0;
fs_devices->num_devices = 0;
fs_devices->open_devices = 0;
- fs_devices->total_devices = 0;
fs_devices->seed = seed_devices;
generate_random_uuid(fs_devices->fsid);
@@ -2146,6 +2197,8 @@ int btrfs_init_new_device(struct btrfs_root *root, char *device_path)
ret = btrfs_commit_transaction(trans, root);
}
+ /* Update ctime/mtime for libblkid */
+ update_dev_time(device_path);
return ret;
error_trans:
@@ -2922,6 +2975,16 @@ static int should_balance_chunk(struct btrfs_root *root,
return 0;
}
+ /*
+ * limited by count, must be the last filter
+ */
+ if ((bargs->flags & BTRFS_BALANCE_ARGS_LIMIT)) {
+ if (bargs->limit == 0)
+ return 0;
+ else
+ bargs->limit--;
+ }
+
return 1;
}
@@ -2944,6 +3007,9 @@ static int __btrfs_balance(struct btrfs_fs_info *fs_info)
int ret;
int enospc_errors = 0;
bool counting = true;
+ u64 limit_data = bctl->data.limit;
+ u64 limit_meta = bctl->meta.limit;
+ u64 limit_sys = bctl->sys.limit;
/* step one make some room on all the devices */
devices = &fs_info->fs_devices->devices;
@@ -2982,6 +3048,11 @@ static int __btrfs_balance(struct btrfs_fs_info *fs_info)
memset(&bctl->stat, 0, sizeof(bctl->stat));
spin_unlock(&fs_info->balance_lock);
again:
+ if (!counting) {
+ bctl->data.limit = limit_data;
+ bctl->meta.limit = limit_meta;
+ bctl->sys.limit = limit_sys;
+ }
key.objectid = BTRFS_FIRST_CHUNK_TREE_OBJECTID;
key.offset = (u64)-1;
key.type = BTRFS_CHUNK_ITEM_KEY;
@@ -3881,7 +3952,8 @@ static int btrfs_add_system_chunk(struct btrfs_root *root,
u8 *ptr;
array_size = btrfs_super_sys_array_size(super_copy);
- if (array_size + item_size > BTRFS_SYSTEM_CHUNK_ARRAY_SIZE)
+ if (array_size + item_size + sizeof(disk_key)
+ > BTRFS_SYSTEM_CHUNK_ARRAY_SIZE)
return -EFBIG;
ptr = super_copy->sys_chunk_array + array_size;
@@ -3986,6 +4058,16 @@ static void check_raid56_incompat_flag(struct btrfs_fs_info *info, u64 type)
btrfs_set_fs_incompat(info, RAID56);
}
+#define BTRFS_MAX_DEVS(r) ((BTRFS_LEAF_DATA_SIZE(r) \
+ - sizeof(struct btrfs_item) \
+ - sizeof(struct btrfs_chunk)) \
+ / sizeof(struct btrfs_stripe) + 1)
+
+#define BTRFS_MAX_DEVS_SYS_CHUNK ((BTRFS_SYSTEM_CHUNK_ARRAY_SIZE \
+ - 2 * sizeof(struct btrfs_disk_key) \
+ - 2 * sizeof(struct btrfs_chunk)) \
+ / sizeof(struct btrfs_stripe) + 1)
+
static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
struct btrfs_root *extent_root, u64 start,
u64 type)
@@ -4035,6 +4117,8 @@ static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
if (type & BTRFS_BLOCK_GROUP_DATA) {
max_stripe_size = 1024 * 1024 * 1024;
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)
@@ -4042,11 +4126,15 @@ static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
else
max_stripe_size = 256 * 1024 * 1024;
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_chunk_size = 2 * max_stripe_size;
+ if (!devs_max)
+ devs_max = BTRFS_MAX_DEVS_SYS_CHUNK;
} else {
- btrfs_err(info, "invalid chunk type 0x%llx requested\n",
+ btrfs_err(info, "invalid chunk type 0x%llx requested",
type);
BUG_ON(1);
}
@@ -4294,7 +4382,7 @@ int btrfs_finish_chunk_alloc(struct btrfs_trans_handle *trans,
if (em->start != chunk_offset || em->len != chunk_size) {
btrfs_crit(extent_root->fs_info, "found a bad mapping, wanted"
- " %Lu-%Lu, found %Lu-%Lu\n", chunk_offset,
+ " %Lu-%Lu, found %Lu-%Lu", chunk_offset,
chunk_size, em->start, em->len);
free_extent_map(em);
return -EINVAL;
@@ -4496,14 +4584,14 @@ int btrfs_num_copies(struct btrfs_fs_info *fs_info, u64 logical, u64 len)
* and exit, so return 1 so the callers don't try to use other copies.
*/
if (!em) {
- btrfs_crit(fs_info, "No mapping for %Lu-%Lu\n", logical,
+ btrfs_crit(fs_info, "No mapping for %Lu-%Lu", logical,
logical+len);
return 1;
}
if (em->start > logical || em->start + em->len < logical) {
btrfs_crit(fs_info, "Invalid mapping for %Lu-%Lu, got "
- "%Lu-%Lu\n", logical, logical+len, em->start,
+ "%Lu-%Lu", logical, logical+len, em->start,
em->start + em->len);
free_extent_map(em);
return 1;
@@ -4684,7 +4772,7 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info, int rw,
if (em->start > logical || em->start + em->len < logical) {
btrfs_crit(fs_info, "found a bad mapping, wanted %Lu, "
- "found %Lu-%Lu\n", logical, em->start,
+ "found %Lu-%Lu", logical, em->start,
em->start + em->len);
free_extent_map(em);
return -EINVAL;
@@ -6058,10 +6146,14 @@ void btrfs_init_devices_late(struct btrfs_fs_info *fs_info)
struct btrfs_fs_devices *fs_devices = fs_info->fs_devices;
struct btrfs_device *device;
- mutex_lock(&fs_devices->device_list_mutex);
- list_for_each_entry(device, &fs_devices->devices, dev_list)
- device->dev_root = fs_info->dev_root;
- mutex_unlock(&fs_devices->device_list_mutex);
+ while (fs_devices) {
+ mutex_lock(&fs_devices->device_list_mutex);
+ list_for_each_entry(device, &fs_devices->devices, dev_list)
+ device->dev_root = fs_info->dev_root;
+ mutex_unlock(&fs_devices->device_list_mutex);
+
+ fs_devices = fs_devices->seed;
+ }
}
static void __btrfs_reset_dev_stats(struct btrfs_device *dev)
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-24 03:04:02 +0000