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-rw-r--r--fs/btrfs/ctree.h14
-rw-r--r--fs/btrfs/dev-replace.c7
-rw-r--r--fs/btrfs/disk-io.c10
-rw-r--r--fs/btrfs/super.c1
-rw-r--r--fs/btrfs/volumes.c5
-rw-r--r--fs/btrfs/zoned.c80
-rw-r--r--fs/btrfs/zoned.h26
7 files changed, 143 insertions, 0 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index c0c6e79c43f9..8f20219e2caa 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -956,6 +956,15 @@ struct btrfs_fs_info {
/* Type of exclusive operation running */
unsigned long exclusive_operation;
+ /*
+ * Zone size > 0 when in ZONED mode, otherwise it's used for a check
+ * if the mode is enabled
+ */
+ union {
+ u64 zone_size;
+ u64 zoned;
+ };
+
#ifdef CONFIG_BTRFS_FS_REF_VERIFY
spinlock_t ref_verify_lock;
struct rb_root block_tree;
@@ -3677,4 +3686,9 @@ static inline int btrfs_is_testing(struct btrfs_fs_info *fs_info)
}
#endif
+static inline bool btrfs_is_zoned(const struct btrfs_fs_info *fs_info)
+{
+ return fs_info->zoned != 0;
+}
+
#endif
diff --git a/fs/btrfs/dev-replace.c b/fs/btrfs/dev-replace.c
index 71a1bddcbc76..a98e33f232d5 100644
--- a/fs/btrfs/dev-replace.c
+++ b/fs/btrfs/dev-replace.c
@@ -260,6 +260,13 @@ static int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
return PTR_ERR(bdev);
}
+ if (!btrfs_check_device_zone_type(fs_info, bdev)) {
+ btrfs_err(fs_info,
+ "dev-replace: zoned type of target device mismatch with filesystem");
+ ret = -EINVAL;
+ goto error;
+ }
+
sync_blockdev(bdev);
list_for_each_entry(device, &fs_info->fs_devices->devices, dev_list) {
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 37b2e0aad162..32e29e2bc99a 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -42,6 +42,7 @@
#include "block-group.h"
#include "discard.h"
#include "space-info.h"
+#include "zoned.h"
#define BTRFS_SUPER_FLAG_SUPP (BTRFS_HEADER_FLAG_WRITTEN |\
BTRFS_HEADER_FLAG_RELOC |\
@@ -3046,6 +3047,8 @@ int __cold open_ctree(struct super_block *sb, struct btrfs_fs_devices *fs_device
if (features & BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA)
btrfs_info(fs_info, "has skinny extents");
+ fs_info->zoned = (features & BTRFS_FEATURE_INCOMPAT_ZONED);
+
/*
* flag our filesystem as having big metadata blocks if
* they are bigger than the page size
@@ -3202,6 +3205,13 @@ int __cold open_ctree(struct super_block *sb, struct btrfs_fs_devices *fs_device
goto fail_block_groups;
}
+ ret = btrfs_check_zoned_mode(fs_info);
+ if (ret) {
+ btrfs_err(fs_info, "failed to initialize zoned mode: %d",
+ ret);
+ goto fail_block_groups;
+ }
+
ret = btrfs_sysfs_add_fsid(fs_devices);
if (ret) {
btrfs_err(fs_info, "failed to init sysfs fsid interface: %d",
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 3c39e363aec5..b754205f21d0 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -44,6 +44,7 @@
#include "backref.h"
#include "space-info.h"
#include "sysfs.h"
+#include "zoned.h"
#include "tests/btrfs-tests.h"
#include "block-group.h"
#include "discard.h"
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index f250bf4dc91f..cf3f4975107f 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -2515,6 +2515,11 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path
if (IS_ERR(bdev))
return PTR_ERR(bdev);
+ if (!btrfs_check_device_zone_type(fs_info, bdev)) {
+ ret = -EINVAL;
+ goto error;
+ }
+
if (fs_devices->seeding) {
seeding_dev = 1;
down_write(&sb->s_umount);
diff --git a/fs/btrfs/zoned.c b/fs/btrfs/zoned.c
index 38d7bf45b83f..56bb701e3b53 100644
--- a/fs/btrfs/zoned.c
+++ b/fs/btrfs/zoned.c
@@ -166,3 +166,83 @@ int btrfs_get_dev_zone(struct btrfs_device *device, u64 pos,
return 0;
}
+
+int btrfs_check_zoned_mode(struct btrfs_fs_info *fs_info)
+{
+ struct btrfs_fs_devices *fs_devices = fs_info->fs_devices;
+ struct btrfs_device *device;
+ u64 zoned_devices = 0;
+ u64 nr_devices = 0;
+ u64 zone_size = 0;
+ const bool incompat_zoned = btrfs_is_zoned(fs_info);
+ int ret = 0;
+
+ /* Count zoned devices */
+ list_for_each_entry(device, &fs_devices->devices, dev_list) {
+ enum blk_zoned_model model;
+
+ if (!device->bdev)
+ continue;
+
+ model = bdev_zoned_model(device->bdev);
+ if (model == BLK_ZONED_HM ||
+ (model == BLK_ZONED_HA && incompat_zoned)) {
+ zoned_devices++;
+ if (!zone_size) {
+ zone_size = device->zone_info->zone_size;
+ } else if (device->zone_info->zone_size != zone_size) {
+ btrfs_err(fs_info,
+ "zoned: unequal block device zone sizes: have %llu found %llu",
+ device->zone_info->zone_size,
+ zone_size);
+ ret = -EINVAL;
+ goto out;
+ }
+ }
+ nr_devices++;
+ }
+
+ if (!zoned_devices && !incompat_zoned)
+ goto out;
+
+ if (!zoned_devices && incompat_zoned) {
+ /* No zoned block device found on ZONED filesystem */
+ btrfs_err(fs_info,
+ "zoned: no zoned devices found on a zoned filesystem");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ if (zoned_devices && !incompat_zoned) {
+ btrfs_err(fs_info,
+ "zoned: mode not enabled but zoned device found");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ if (zoned_devices != nr_devices) {
+ btrfs_err(fs_info,
+ "zoned: cannot mix zoned and regular devices");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ /*
+ * stripe_size is always aligned to BTRFS_STRIPE_LEN in
+ * __btrfs_alloc_chunk(). Since we want stripe_len == zone_size,
+ * check the alignment here.
+ */
+ if (!IS_ALIGNED(zone_size, BTRFS_STRIPE_LEN)) {
+ btrfs_err(fs_info,
+ "zoned: zone size %llu not aligned to stripe %u",
+ zone_size, BTRFS_STRIPE_LEN);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ fs_info->zone_size = zone_size;
+
+ btrfs_info(fs_info, "zoned mode enabled with zone size %llu", zone_size);
+out:
+ return ret;
+}
diff --git a/fs/btrfs/zoned.h b/fs/btrfs/zoned.h
index 00c871f09d03..e4ee1a50be2d 100644
--- a/fs/btrfs/zoned.h
+++ b/fs/btrfs/zoned.h
@@ -4,6 +4,7 @@
#define BTRFS_ZONED_H
#include <linux/types.h>
+#include <linux/blkdev.h>
struct btrfs_zoned_device_info {
/*
@@ -22,6 +23,7 @@ int btrfs_get_dev_zone(struct btrfs_device *device, u64 pos,
struct blk_zone *zone);
int btrfs_get_dev_zone_info(struct btrfs_device *device);
void btrfs_destroy_dev_zone_info(struct btrfs_device *device);
+int btrfs_check_zoned_mode(struct btrfs_fs_info *fs_info);
#else /* CONFIG_BLK_DEV_ZONED */
static inline int btrfs_get_dev_zone(struct btrfs_device *device, u64 pos,
struct blk_zone *zone)
@@ -36,6 +38,15 @@ static inline int btrfs_get_dev_zone_info(struct btrfs_device *device)
static inline void btrfs_destroy_dev_zone_info(struct btrfs_device *device) { }
+static inline int btrfs_check_zoned_mode(const struct btrfs_fs_info *fs_info)
+{
+ if (!btrfs_is_zoned(fs_info))
+ return 0;
+
+ btrfs_err(fs_info, "zoned block devices support is not enabled");
+ return -EOPNOTSUPP;
+}
+
#endif
static inline bool btrfs_dev_is_sequential(struct btrfs_device *device, u64 pos)
@@ -84,4 +95,19 @@ static inline void btrfs_dev_clear_zone_empty(struct btrfs_device *device, u64 p
btrfs_dev_set_empty_zone_bit(device, pos, false);
}
+static inline bool btrfs_check_device_zone_type(const struct btrfs_fs_info *fs_info,
+ struct block_device *bdev)
+{
+ u64 zone_size;
+
+ if (btrfs_is_zoned(fs_info)) {
+ zone_size = bdev_zone_sectors(bdev) << SECTOR_SHIFT;
+ /* Do not allow non-zoned device */
+ return bdev_is_zoned(bdev) && fs_info->zone_size == zone_size;
+ }
+
+ /* Do not allow Host Manged zoned device */
+ return bdev_zoned_model(bdev) != BLK_ZONED_HM;
+}
+
#endif
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-07 10:46:02 +0300