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/linux/Documentation/admin-guide/device-mapper/
H A Ddm-zoned.rst2 dm-zoned
5 The dm-zoned device mapper target exposes a zoned block device (ZBC and
7 pattern constraints. In effect, it implements a drive-managed zoned
10 host-managed zoned block devices and can mitigate the potential
12 host-aware zoned block devices.
14 For a more detailed description of the zoned block device models and
23 The dm-zoned implementation is simple and minimizes system overhead (CPU
25 host-managed disk with 256 MB zones, dm-zoned memory usage per disk
29 dm-zoned target devices are formatted and checked using the dmzadm
32 https://github.com/hgst/dm-zoned-tools
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H A Ddm-crypt.rst134 This option is automatically enabled for host-managed zoned block devices
/linux/Documentation/admin-guide/blockdev/
H A Dzoned_loop.rst18 The zoned loop block device driver (zloop) allows a user to create a zoned block
21 regular files of a file system to emulate a zoned block device.
23 Using zloop, zoned block devices with a configurable capacity, zone size and
33 zone size. With this, the maximum capacity of a zloop zoned block device created
39 The zoned loop block device driver implements a complete zone transition state
89 nr_queues Number of I/O queues of the zoned block device. This
112 Deleting an unused zoned loop block device is done by issuing the "remove"
119 A zoned device that was removed can be re-added again without any change to the
121 before the device was removed. Adding again a zoned device after it was removed
124 the zoned device will not be created.
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/linux/Documentation/block/
H A Dnull_blk.rst137 zoned=[0/1]: Default: 0
138 Device is a random-access or a zoned block device.
142 1 Block device is exposed as a host-managed zoned block device. Requires
147 Per zone size when exposed as a zoned block device. Must be a power of two.
150 The number of conventional zones to create when block device is zoned. If
/linux/Documentation/filesystems/
H A Dzonefs.rst10 zonefs is a very simple file system exposing each zone of a zoned block device
11 as a file. Unlike a regular POSIX-compliant file system with native zoned block
13 constraint of zoned block devices to the user. Files representing sequential
19 the implementation of zoned block device support in applications by replacing
23 tree structures (such as used in RocksDB and LevelDB) on zoned block devices
48 technologies. The most common form of zoned storage today uses the SCSI Zoned
52 Solid State Disks (SSD) storage devices can also implement a zoned interface
55 committee aiming at adding a zoned storage interface to the NVMe protocol.
60 Zonefs exposes the zones of a zoned block device as files. The files
149 write feature for zoned block device (ELEVATOR_F_ZBD_SEQ_WRITE elevator feature)
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/linux/drivers/md/
H A Ddm-table.c1670 bool *zoned = data; in device_not_zoned() local
1672 return bdev_is_zoned(dev->bdev) != *zoned; in device_not_zoned()
1688 static bool dm_table_supports_zoned(struct dm_table *t, bool zoned) in dm_table_supports_zoned() argument
1708 &zoned)) in dm_table_supports_zoned()
1711 if (zoned) in dm_table_supports_zoned()
1734 static int validate_hardware_zoned(struct dm_table *t, bool zoned, in validate_hardware_zoned() argument
1737 if (!zoned) in validate_hardware_zoned()
1740 if (!dm_table_supports_zoned(t, zoned)) { in validate_hardware_zoned()
1767 bool zoned = false; in dm_calculate_queue_limits() local
1797 if (!zoned && (ti_limits.features & BLK_FEAT_ZONED)) { in dm_calculate_queue_limits()
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H A Ddm-zoned-target.c1156 module_dm(zoned);
/linux/drivers/block/null_blk/
H A DMakefile11 null_blk-$(CONFIG_BLK_DEV_ZONED) += zoned.o
H A Dmain.c237 module_param_named(zoned, g_zoned, bool, S_IRUGO);
238 MODULE_PARM_DESC(zoned, "Make device as a host-managed zoned block device. Default: false");
462 NULLB_DEVICE_ATTR(zoned, bool, NULL);
816 dev->zoned = g_zoned; in null_alloc_dev()
1253 if (dev->zoned) { in null_transfer()
1454 if (dev->zoned) in null_handle_cmd()
1800 if (nullb->dev->zoned) { in null_config_discard()
1919 if (dev->zoned && in null_validate_conf()
1992 if (dev->zoned) { in null_add_dev()
2046 if (nullb->dev->zoned) { in null_add_dev()
H A Dzoned.c785 if (!dev->zoned) { in zone_cond_store()
/linux/fs/zonefs/
H A DKconfig8 zonefs is a simple file system which exposes zones of a zoned block
/linux/include/uapi/linux/
H A Dvirtio_blk.h150 } zoned; member
H A Dublk_cmd.h255 * User space sets this flag when setting up the device to request zoned storage support. Kernel may
740 struct ublk_param_zoned zoned;
622 struct ublk_param_zoned zoned; global() member
/linux/drivers/block/
H A Dvirtio_blk.c729 zoned.max_open_zones, &v); in virtblk_read_zoned_limits()
734 zoned.max_active_zones, &v); in virtblk_read_zoned_limits()
739 zoned.write_granularity, &wg); in virtblk_read_zoned_limits()
753 virtio_cread(vdev, struct virtio_blk_config, zoned.zone_sectors, in virtblk_read_zoned_limits()
771 zoned.max_append_sectors, &v); in virtblk_read_zoned_limits()
1416 virtio_cread(vdev, struct virtio_blk_config, zoned.model, &model); in virtblk_read_limits()
H A DKconfig360 Saying Y here will allow you to use create a zoned block device using
362 file systems, device mapper and applications that support zoned block
363 devices. To create a zoned loop device, no user utility is needed, a
364 zoned loop device can be created (or re-started) using a command
/linux/fs/xfs/
H A DKconfig122 This option is mandatory to support zoned block devices. For these
123 devices, the realtime subvolume must be backed by a zoned block
125 metadata). If the zoned block device is a host-managed SMR hard-disk
/linux/fs/btrfs/
H A DMakefile39 btrfs-$(CONFIG_BLK_DEV_ZONED) += zoned.o
H A DKconfig108 support RAID1* profiles on zoned devices,
H A Dsysfs.c295 BTRFS_FEAT_ATTR_INCOMPAT(zoned, ZONED);
331 BTRFS_FEAT_ATTR_PTR(zoned),
H A Dtree-log.c293 const bool zoned = btrfs_is_zoned(fs_info); in start_log_trans() local
326 if (zoned && atomic_read(&root->log_commit[index])) { in start_log_trans()
344 if (zoned && !created) { in start_log_trans()
377 const bool zoned = btrfs_is_zoned(root->fs_info); in join_running_log_trans() local
389 if (zoned && atomic_read(&root->log_commit[index])) { in join_running_log_trans()
H A Dblock-group.c2259 const bool zoned = btrfs_is_zoned(fs_info); in exclude_super_stripes() local
2283 if (unlikely(zoned && nr)) { in exclude_super_stripes()
/linux/drivers/scsi/pm8001/
H A Dpm8001_init.c61 MODULE_PARM_DESC(zoned, "Use MSIX interrupts. Default: true");
65 MODULE_PARM_DESC(zoned, "Use MSIX interrupts. Default: true");
69 MODULE_PARM_DESC(zoned, "Get WWN from the controller. Default: true");
/linux/drivers/scsi/
H A Dsd.c688 if (sdkp->zoned == 1) in zoned_cap_show()
690 if (sdkp->zoned == 2) in zoned_cap_show()
3444 sdkp->zoned = (vpd->data[8] >> 4) & 3; in sd_read_block_characteristics()
3455 else if (sdkp->zoned == 1) in sd_read_block_characteristics()
3457 else if (sdkp->zoned == 2) in sd_read_block_characteristics()
H A Dscsi_debug.c395 bool zoned; member
2076 is_zbc = devip->zoned; in resp_inquiry()
2392 if (devip->zoned) in resp_readcap16()
2974 is_zbc = devip->zoned; in resp_mode_sense()
6499 if (devip->zoned) { in sdebug_device_create_zones()
6523 if (devip->zoned) in sdebug_device_create_zones()
6566 devip->zoned = sdeb_zbc_model == BLK_ZONED_HM; in sdebug_device_create()
6572 devip->zoned = false; in sdebug_device_create()
/linux/Documentation/ABI/testing/
H A Dsysfs-kernel-slab403 zoned.

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