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/Linux-v5.15/Documentation/admin-guide/device-mapper/
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
[all …]
Dindex.rst25 dm-zoned
Ddm-crypt.rst129 This option is automatically enabled for host-managed zoned block devices
/Linux-v5.15/Documentation/block/
Dqueue-sysfs.rst22 of the RAID volume stripe segment. For a zoned block device, either host-aware
122 For zoned block devices (zoned attribute indicating "host-managed" or
133 For zoned block devices (zoned attribute indicating "host-managed" or
185 For zoned block devices (zoned attribute indicating "host-managed" or
267 zone of a zoned block device using a zone append write operation
270 zoned (RO)
272 This indicates if the device is a zoned block device and the zone model of the
273 device if it is indeed zoned. The possible values indicated by zoned are
274 "none" for regular block devices and "host-aware" or "host-managed" for zoned
275 block devices. The characteristics of host-aware and host-managed zoned block
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Dnull_blk.rst115 zoned=[0/1]: Default: 0
116 Device is a random-access or a zoned block device.
120 1 Block device is exposed as a host-managed zoned block device. Requires
125 Per zone size when exposed as a zoned block device. Must be a power of two.
128 The number of conventional zones to create when block device is zoned. If
/Linux-v5.15/Documentation/ABI/testing/
Dsysfs-block267 What: /sys/block/<disk>/queue/zoned
271 zoned indicates if the device is a zoned block device
272 and the zone model of the device if it is indeed zoned.
273 The possible values indicated by zoned are "none" for
275 for zoned block devices. The characteristics of
276 host-aware and host-managed zoned block devices are
280 since drive-managed zoned block devices do not support
282 devices and zoned will report "none".
288 nr_zones indicates the total number of zones of a zoned block
296 For zoned block devices (zoned attribute indicating
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/Linux-v5.15/drivers/md/
DMakefile28 dm-zoned-y += dm-zoned-target.o dm-zoned-metadata.o dm-zoned-reclaim.o
84 obj-$(CONFIG_DM_ZONED) += dm-zoned.o
DKconfig626 tristate "Drive-managed zoned block device target support"
631 This device-mapper target takes a host-managed or host-aware zoned
633 device (drive-managed zoned block device) without any write
635 do not natively support zoned block devices but still want to
641 be called dm-zoned.
Ddm-table.c1675 if (zoned_model == BLK_ZONED_NONE && ti_limits.zoned != BLK_ZONED_NONE) { in dm_calculate_queue_limits()
1680 zoned_model = ti_limits.zoned; in dm_calculate_queue_limits()
1717 if (limits->zoned != BLK_ZONED_NONE) { in dm_calculate_queue_limits()
1722 zoned_model = limits->zoned; in dm_calculate_queue_limits()
/Linux-v5.15/Documentation/filesystems/
Dzonefs.rst10 zonefs is a very simple file system exposing each zone of a zoned block device
11 as a file. Unlike a regular POSIX-compliant file system with native zoned block
13 constraint of zoned block devices to the user. Files representing sequential
19 the implementation of zoned block device support in applications by replacing
23 tree structures (such as used in RocksDB and LevelDB) on zoned block devices
48 technologies. The most common form of zoned storage today uses the SCSI Zoned
52 Solid State Disks (SSD) storage devices can also implement a zoned interface
55 committee aiming at adding a zoned storage interface to the NVMe protocol.
60 Zonefs exposes the zones of a zoned block device as files. The files
149 write feature for zoned block device (ELEVATOR_F_ZBD_SEQ_WRITE elevator feature)
[all …]
/Linux-v5.15/block/
DMakefile33 obj-$(CONFIG_BLK_DEV_ZONED) += blk-zoned.o
36 obj-$(CONFIG_BLK_DEBUG_FS_ZONED)+= blk-mq-debugfs-zoned.o
Dblk-settings.c58 lim->zoned = BLK_ZONED_NONE; in blk_set_default_limits()
649 t->zoned = max(t->zoned, b->zoned); in blk_stack_limits()
907 q->limits.zoned = model; in blk_queue_set_zoned()
DKconfig68 Block layer zoned block device support. This option enables
69 support for ZAC/ZBC/ZNS host-managed and host-aware zoned block
/Linux-v5.15/drivers/block/null_blk/
DMakefile11 null_blk-$(CONFIG_BLK_DEV_ZONED) += zoned.o
Dmain.c204 module_param_named(zoned, g_zoned, bool, S_IRUGO);
205 MODULE_PARM_DESC(zoned, "Make device as a host-managed zoned block device. Default: false");
363 NULLB_DEVICE_ATTR(zoned, bool, NULL);
604 dev->zoned = g_zoned; in null_alloc_dev()
1139 if (dev->zoned) in null_transfer()
1374 if (dev->zoned) in null_handle_cmd()
1618 if (nullb->dev->zoned) { in null_config_discard()
1713 if (nullb->dev->zoned) { in null_gendisk_register()
1773 if (dev->zoned && in null_validate_conf()
1876 if (dev->zoned) { in null_add_dev()
Dnull_blk.h99 bool zoned; /* if device is zoned */ member
/Linux-v5.15/drivers/scsi/
Dsd.h124 unsigned zoned: 2; member
214 return sdkp->zoned == 1 || sdkp->device->type == TYPE_ZBC; in sd_is_zoned()
Dsd.c536 if (sdkp->zoned == 1) in zoned_cap_show()
538 if (sdkp->zoned == 2) in zoned_cap_show()
2990 sdkp->zoned = (buffer[8] >> 4) & 3; in sd_read_block_characteristics()
2991 if (sdkp->zoned == 1) { in sd_read_block_characteristics()
3005 q->limits.zoned == BLK_ZONED_HM ? "managed" : "aware"); in sd_read_block_characteristics()
3007 if (sdkp->zoned == 1) in sd_read_block_characteristics()
3010 else if (sdkp->zoned == 2) in sd_read_block_characteristics()
/Linux-v5.15/fs/zonefs/
DKconfig8 zonefs is a simple file system which exposes zones of a zoned block
/Linux-v5.15/fs/btrfs/
DMakefile38 btrfs-$(CONFIG_BLK_DEV_ZONED) += zoned.o
Dsysfs.c288 BTRFS_FEAT_ATTR_INCOMPAT(zoned, ZONED);
316 BTRFS_FEAT_ATTR_PTR(zoned),
/Linux-v5.15/block/partitions/
Dcore.c334 switch (disk->queue->limits.zoned) { in add_partition()
631 if (disk->queue->limits.zoned == BLK_ZONED_HM) { in blk_add_partitions()
/Linux-v5.15/Documentation/ABI/stable/
Dsysfs-devices-node77 The node's zoned virtual memory statistics.
/Linux-v5.15/include/linux/
Dblkdev.h325 enum blk_zoned_model zoned; member
671 return q->limits.zoned; in blk_queue_zoned_model()
/Linux-v5.15/drivers/ata/
Dlibata-scsi.c2081 u8 zoned = ata_id_zoned_cap(args->id); in ata_scsiop_inq_b1() local
2088 if (zoned) in ata_scsiop_inq_b1()
2089 rbuf[8] = (zoned << 4); in ata_scsiop_inq_b1()

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