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![]() Implement ZBC support functions to setup zoned disks, both host-managed and host-aware models. Only zoned disks that satisfy the following conditions are supported: 1) All zones are the same size, with the exception of an eventual last smaller runt zone. 2) For host-managed disks, reads are unrestricted (reads are not failed due to zone or write pointer alignement constraints). Zoned disks that do not satisfy these 2 conditions are setup with a capacity of 0 to prevent their use. The function sd_zbc_read_zones, called from sd_revalidate_disk, checks that the device satisfies the above two constraints. This function may also change the disk capacity previously set by sd_read_capacity for devices reporting only the capacity of conventional zones at the beginning of the LBA range (i.e. devices reporting rc_basis set to 0). The capacity message output was moved out of sd_read_capacity into a new function sd_print_capacity to include this eventual capacity change by sd_zbc_read_zones. This new function also includes a call to sd_zbc_print_zones to display the number of zones and zone size of the device. Signed-off-by: Hannes Reinecke <hare@suse.de> [Damien: * Removed zone cache support * Removed mapping of discard to reset write pointer command * Modified sd_zbc_read_zones to include checks that the device satisfies the kernel constraints * Implemeted REPORT ZONES setup and post-processing based on code from Shaun Tancheff <shaun.tancheff@seagate.com> * Removed confusing use of 512B sector units in functions interface] Signed-off-by: Damien Le Moal <damien.lemoal@hgst.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Shaun Tancheff <shaun.tancheff@seagate.com> Tested-by: Shaun Tancheff <shaun.tancheff@seagate.com> Acked-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Jens Axboe <axboe@fb.com> |
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.. | ||
fc | ||
fc_encode.h | ||
fc_frame.h | ||
fcoe_sysfs.h | ||
iscsi_if.h | ||
iscsi_proto.h | ||
iser.h | ||
libfc.h | ||
libfcoe.h | ||
libiscsi.h | ||
libiscsi_tcp.h | ||
libsas.h | ||
osd_attributes.h | ||
osd_initiator.h | ||
osd_ore.h | ||
osd_protocol.h | ||
osd_sec.h | ||
osd_sense.h | ||
osd_types.h | ||
sas.h | ||
sas_ata.h | ||
scsi.h | ||
scsi_bsg_iscsi.h | ||
scsi_cmnd.h | ||
scsi_common.h | ||
scsi_dbg.h | ||
scsi_device.h | ||
scsi_devinfo.h | ||
scsi_dh.h | ||
scsi_driver.h | ||
scsi_eh.h | ||
scsi_host.h | ||
scsi_ioctl.h | ||
scsi_proto.h | ||
scsi_tcq.h | ||
scsi_transport.h | ||
scsi_transport_fc.h | ||
scsi_transport_iscsi.h | ||
scsi_transport_sas.h | ||
scsi_transport_spi.h | ||
scsi_transport_srp.h | ||
scsicam.h | ||
sg.h | ||
srp.h | ||
viosrp.h |