The list below contains valid entries to add to sd.conf, to override the block size detection for those specific drive models. This is used to force zfs to set ashift=12 on drives that use 4KB sectors internally, but emulate 512B sectors (512e). Please only include drives that report using 512e.
sd.conf
sd-config-list =
"ATA SAMSUNG HD204UI", "physical-block-size:4096",
"ATA
...
ST2000DL004 HD20", "physical-block-size:4096",
...
"ATA
...
ST3250820NS", "physical-block-size:4096",
"ATA WDC WD15EARS-00S", "physical-block-size:4096";