#include "utils.h"
#include "kernel-lib/raid56.h"
+const struct btrfs_raid_attr btrfs_raid_array[BTRFS_NR_RAID_TYPES] = {
+ [BTRFS_RAID_RAID10] = {
+ .sub_stripes = 2,
+ .dev_stripes = 1,
+ .devs_max = 0, /* 0 == as many as possible */
+ .devs_min = 4,
+ .tolerated_failures = 1,
+ .devs_increment = 2,
+ .ncopies = 2,
+ },
+ [BTRFS_RAID_RAID1] = {
+ .sub_stripes = 1,
+ .dev_stripes = 1,
+ .devs_max = 2,
+ .devs_min = 2,
+ .tolerated_failures = 1,
+ .devs_increment = 2,
+ .ncopies = 2,
+ },
+ [BTRFS_RAID_DUP] = {
+ .sub_stripes = 1,
+ .dev_stripes = 2,
+ .devs_max = 1,
+ .devs_min = 1,
+ .tolerated_failures = 0,
+ .devs_increment = 1,
+ .ncopies = 2,
+ },
+ [BTRFS_RAID_RAID0] = {
+ .sub_stripes = 1,
+ .dev_stripes = 1,
+ .devs_max = 0,
+ .devs_min = 2,
+ .tolerated_failures = 0,
+ .devs_increment = 1,
+ .ncopies = 1,
+ },
+ [BTRFS_RAID_SINGLE] = {
+ .sub_stripes = 1,
+ .dev_stripes = 1,
+ .devs_max = 1,
+ .devs_min = 1,
+ .tolerated_failures = 0,
+ .devs_increment = 1,
+ .ncopies = 1,
+ },
+ [BTRFS_RAID_RAID5] = {
+ .sub_stripes = 1,
+ .dev_stripes = 1,
+ .devs_max = 0,
+ .devs_min = 2,
+ .tolerated_failures = 1,
+ .devs_increment = 1,
+ .ncopies = 2,
+ },
+ [BTRFS_RAID_RAID6] = {
+ .sub_stripes = 1,
+ .dev_stripes = 1,
+ .devs_max = 0,
+ .devs_min = 3,
+ .tolerated_failures = 2,
+ .devs_increment = 1,
+ .ncopies = 3,
+ },
+};
+
struct stripe {
struct btrfs_device *dev;
u64 physical;
static LIST_HEAD(fs_uuids);
-static struct btrfs_device *__find_device(struct list_head *head, u64 devid,
- u8 *uuid)
+/*
+ * Find a device specified by @devid or @uuid in the list of @fs_devices, or
+ * return NULL.
+ *
+ * If devid and uuid are both specified, the match must be exact, otherwise
+ * only devid is used.
+ */
+static struct btrfs_device *find_device(struct btrfs_fs_devices *fs_devices,
+ u64 devid, u8 *uuid)
{
+ struct list_head *head = &fs_devices->devices;
struct btrfs_device *dev;
- struct list_head *cur;
- list_for_each(cur, head) {
- dev = list_entry(cur, struct btrfs_device, dev_list);
+ list_for_each_entry(dev, head, dev_list) {
if (dev->devid == devid &&
- !memcmp(dev->uuid, uuid, BTRFS_UUID_SIZE)) {
+ (!uuid || !memcmp(dev->uuid, uuid, BTRFS_UUID_SIZE))) {
return dev;
}
}
static struct btrfs_fs_devices *find_fsid(u8 *fsid)
{
- struct list_head *cur;
struct btrfs_fs_devices *fs_devices;
- list_for_each(cur, &fs_uuids) {
- fs_devices = list_entry(cur, struct btrfs_fs_devices, list);
+ list_for_each_entry(fs_devices, &fs_uuids, list) {
if (memcmp(fsid, fs_devices->fsid, BTRFS_FSID_SIZE) == 0)
return fs_devices;
}
fs_devices->lowest_devid = (u64)-1;
device = NULL;
} else {
- device = __find_device(&fs_devices->devices, devid,
+ device = find_device(fs_devices, devid,
disk_super->dev_item.uuid);
}
if (!device) {
struct btrfs_device, dev_list);
if (device->fd != -1) {
if (fsync(device->fd) == -1) {
- warning("fsync on device %llu failed: %s",
- device->devid, strerror(errno));
+ warning("fsync on device %llu failed: %m",
+ device->devid);
ret = -errno;
}
if (posix_fadvise(device->fd, 0, 0, POSIX_FADV_DONTNEED))
int btrfs_open_devices(struct btrfs_fs_devices *fs_devices, int flags)
{
int fd;
- struct list_head *head = &fs_devices->devices;
- struct list_head *cur;
struct btrfs_device *device;
int ret;
- list_for_each(cur, head) {
- device = list_entry(cur, struct btrfs_device, dev_list);
+ list_for_each_entry(device, &fs_devices->devices, dev_list) {
if (!device->name) {
printk("no name for device %llu, skip it now\n", device->devid);
continue;
fd = open(device->name, flags);
if (fd < 0) {
ret = -errno;
- error("cannot open device '%s': %s", device->name,
- strerror(errno));
+ error("cannot open device '%s': %m", device->name);
goto fail;
}
* But if we don't find suitable free space, it is used to store the size of
* the max free space.
*/
-static int find_free_dev_extent_start(struct btrfs_trans_handle *trans,
- struct btrfs_device *device, u64 num_bytes,
- u64 search_start, u64 *start, u64 *len)
+static int find_free_dev_extent_start(struct btrfs_device *device,
+ u64 num_bytes, u64 search_start,
+ u64 *start, u64 *len)
{
struct btrfs_key key;
struct btrfs_root *root = device->dev_root;
return ret;
}
-int find_free_dev_extent(struct btrfs_trans_handle *trans,
- struct btrfs_device *device, u64 num_bytes,
- u64 *start)
+static int find_free_dev_extent(struct btrfs_device *device, u64 num_bytes,
+ u64 *start, u64 *len)
{
/* FIXME use last free of some kind */
- return find_free_dev_extent_start(trans, device,
- num_bytes, 0, start, NULL);
+ return find_free_dev_extent_start(device, num_bytes, 0, start, len);
}
static int btrfs_alloc_dev_extent(struct btrfs_trans_handle *trans,
struct btrfs_device *device,
- u64 chunk_tree, u64 chunk_objectid,
- u64 chunk_offset,
- u64 num_bytes, u64 *start, int convert)
+ u64 chunk_offset, u64 num_bytes, u64 *start,
+ int convert)
{
int ret;
struct btrfs_path *path;
* is responsible to make sure it's free.
*/
if (!convert) {
- ret = find_free_dev_extent(trans, device, num_bytes,
- start);
+ ret = find_free_dev_extent(device, num_bytes, start, NULL);
if (ret)
goto err;
}
leaf = path->nodes[0];
extent = btrfs_item_ptr(leaf, path->slots[0],
struct btrfs_dev_extent);
- btrfs_set_dev_extent_chunk_tree(leaf, extent, chunk_tree);
- btrfs_set_dev_extent_chunk_objectid(leaf, extent, chunk_objectid);
+ btrfs_set_dev_extent_chunk_tree(leaf, extent, BTRFS_CHUNK_TREE_OBJECTID);
+ btrfs_set_dev_extent_chunk_objectid(leaf, extent,
+ BTRFS_FIRST_CHUNK_TREE_OBJECTID);
btrfs_set_dev_extent_chunk_offset(leaf, extent, chunk_offset);
write_extent_buffer(leaf, root->fs_info->chunk_tree_uuid,
return ret;
}
-#define BTRFS_MAX_DEVS(r) ((BTRFS_LEAF_DATA_SIZE(r) \
+#define BTRFS_MAX_DEVS(info) ((BTRFS_LEAF_DATA_SIZE(info) \
- sizeof(struct btrfs_item) \
- sizeof(struct btrfs_chunk)) \
/ sizeof(struct btrfs_stripe) + 1)
calc_size = SZ_1G;
max_chunk_size = 10 * calc_size;
min_stripe_size = SZ_64M;
- max_stripes = BTRFS_MAX_DEVS(chunk_root);
+ max_stripes = BTRFS_MAX_DEVS(info);
} else if (type & BTRFS_BLOCK_GROUP_METADATA) {
calc_size = SZ_1G;
max_chunk_size = 4 * calc_size;
min_stripe_size = SZ_32M;
- max_stripes = BTRFS_MAX_DEVS(chunk_root);
+ max_stripes = BTRFS_MAX_DEVS(info);
}
}
if (type & BTRFS_BLOCK_GROUP_RAID1) {
(index == num_stripes - 1))
list_move_tail(&device->dev_list, dev_list);
- ret = btrfs_alloc_dev_extent(trans, device,
- info->chunk_root->root_key.objectid,
- BTRFS_FIRST_CHUNK_TREE_OBJECTID, key.offset,
+ ret = btrfs_alloc_dev_extent(trans, device, key.offset,
calc_size, &dev_offset, 0);
if (ret < 0)
goto out_chunk_map;
while (index < num_stripes) {
struct btrfs_stripe *stripe;
- ret = btrfs_alloc_dev_extent(trans, device,
- info->chunk_root->root_key.objectid,
- BTRFS_FIRST_CHUNK_TREE_OBJECTID, key.offset,
+ ret = btrfs_alloc_dev_extent(trans, device, key.offset,
calc_size, &dev_offset, convert);
BUG_ON(ret);
if (!fsid ||
(!memcmp(cur_devices->fsid, fsid, BTRFS_UUID_SIZE) ||
fs_info->ignore_fsid_mismatch)) {
- device = __find_device(&cur_devices->devices,
- devid, uuid);
+ device = find_device(cur_devices, devid, uuid);
if (device)
return device;
}
return -EIO;
}
if (btrfs_chunk_sector_size(leaf, chunk) != sectorsize) {
- error("invalid chunk sectorsize %llu",
+ error("invalid chunk sectorsize %llu",
(unsigned long long)btrfs_chunk_sector_size(leaf, chunk));
return -EIO;
}
old_bytes, total_bytes);
return 1;
}
+
+/*
+ * Return 0 if all devices and super block sizes are good
+ * Return >0 if any device/super size problem was found, but fixed
+ * Return <0 if something wrong happened during fixing
+ */
+int btrfs_fix_device_and_super_size(struct btrfs_fs_info *fs_info)
+{
+ struct btrfs_device *device;
+ struct list_head *dev_list = &fs_info->fs_devices->devices;
+ bool have_bad_value = false;
+ int ret;
+
+ /* Seed device is not supported yet */
+ if (fs_info->fs_devices->seed) {
+ error("fixing device size with seed device is not supported yet");
+ return -EOPNOTSUPP;
+ }
+
+ /* All devices must be set up before repairing */
+ if (list_empty(dev_list)) {
+ error("no device found");
+ return -ENODEV;
+ }
+ list_for_each_entry(device, dev_list, dev_list) {
+ if (device->fd == -1 || !device->writeable) {
+ error("devid %llu is missing or not writeable",
+ device->devid);
+ error(
+ "fixing device size needs all device(s) to be present and writeable");
+ return -ENODEV;
+ }
+ }
+
+ /* Repair total_bytes of each device */
+ list_for_each_entry(device, dev_list, dev_list) {
+ ret = btrfs_fix_device_size(fs_info, device);
+ if (ret < 0)
+ return ret;
+ if (ret > 0)
+ have_bad_value = true;
+ }
+
+ /* Repair super total_byte */
+ ret = btrfs_fix_super_size(fs_info);
+ if (ret > 0)
+ have_bad_value = true;
+ if (have_bad_value) {
+ printf(
+ "Fixed unaligned/mismatched total_bytes for super block and device items\n");
+ ret = 1;
+ } else {
+ printf("No device size related problem found\n");
+ ret = 0;
+ }
+ return ret;
+}
projects / platform / upstream / btrfs-progs.git / blobdiff