Trying to track down why my 4K drives no longer display 4K in sysfs (/sys) and don't seem to show individual disk drive information. When I first got the drives, linux displayed the correct physical disk size, but when I look now, I only see 512. I just checked with MegaCLI, and it can still display all the data (harddisk manuf. in each bah, and physical sector size). So I'm wonder if util-linux has something in its blk library about this?