Disk sector size & I/O size

[ggyuchoe]

Hello. I use black-box mode to design the test environment. I would like to partition and test through fdisk, but it is confirmed that both sector size and I/O size are 512B as follows. How can we change these sizes to 4096B (4KB)?

===fdisk log=== Disk /dev/nvme0n1: 32 GiB, 34359738368 bytes, 67108864 sectors Disk model: FEMU BlackBox-SSD Controller Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes

[huaicheng]

Similarly, refer to #76.

For bbssd mode, you also need to change the FTL level sector size to 4096B manually.