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numam-spdk/examples
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Swapnil Ingle 6cebe9d06b nvmf: Support physical block size if exposed by bdev 
(Note: this patch was previously applied as b32cfc46 and then reverted
as 63642bef.)

Today the in-guest nvme device shows physical_block_size=512 even though
the backend iSCSI bdev supports physical_block_size=4K

iSCSI targets exposes physical block size using
logical_block_per_physical_block_exponent in READ_CAPACITY_16

NPWG is one of the way to let Linux nvme driver set
physical_block_size of the nvme block device.

This patch adds spdk_bdev.phys_blocklen which is updated if the iSCSI
backend exposes physical_block_size.
Later phys_blocklen is used in nvmf to set NPWG and NAWUPF to report
back during NS identity.
Linux driver uses min(nawupf, npwg) to set physical_block_size.

Similarly in scsi_bdev fill lbppbe in READ_CAP16 response
based on spdk_bdev.phys_blocklen.

Fixes #1884

Signed-off-by: Swapnil Ingle <swapnil.ingle@nutanix.com>
Change-Id: I0b6c81f1937e346d448f49c927eda8c79d2d75c0
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/7739
Community-CI: Broadcom CI
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
2021-05-06 07:14:40 +00:00
..
accel perf: remove unused g_tsc_us_rate. 2021-04-15 11:25:21 +00:00
bdev bdev/hello_world: for zoned bdevs, reset the zone before write 2021-03-29 10:17:45 +00:00
blob build: use DEPDIRS variables to build SPDK_LIB_LIST 2020-12-18 09:40:01 +00:00
interrupt_tgt examples/interrupt_tgt: mark reactor_set_interrupt_mode RPC private 2021-04-26 08:39:59 +00:00
ioat build: use DEPDIRS variables to build SPDK_LIB_LIST 2020-12-18 09:40:01 +00:00
nvme nvmf: Support physical block size if exposed by bdev 2021-05-06 07:14:40 +00:00
nvmf event: Add return code to spdk_rpc_initialize 2021-03-12 08:38:10 +00:00
sock build: use DEPDIRS variables to build SPDK_LIB_LIST 2020-12-18 09:40:01 +00:00
vmd env_dpdk: save hotplug timeout timestamps separate from rte_devargs 2021-04-23 08:16:24 +00:00
Makefile examples/interrupt_tgt: Fix app compiling error without vhost. 2021-01-26 08:33:44 +00:00