alignment_offset
bdi
cache_type
capability
dev
device
discard_alignment
diskseq
events
events_async
events_poll_msecs
ext_range
hidden
holders/
inflight
integrity/
mq/
partscan
power/
queue/
range
removable
ro
serial
size
slaves/
stat
subsystem
trace/
uevent
vda1/
vda14/
vda15/
vda16/