dev=$1
realdev=$(readlink -f "$dev")
basename=$(basename "$realdev")
-disk_size=$(($(<"/sys/block/$basename/size")*512))
+major=$((0x$(stat -L -c '%t' "$realdev")))
+minor=$((0x$(stat -L -c '%T' "$realdev")))
+disk_size=$(($(<"/sys/dev/block/$major:$minor/size")*512))
+# When the target is a partition device, get basename of its holder device to
+# access sysfs path of the holder device
+if [[ -r "/sys/dev/block/$major:$minor/partition" ]]; then
+ realsysfs=$(readlink "/sys/dev/block/$major:$minor")
+ basename=$(basename "${realsysfs%/*}")
+fi
logical_block_size=$(<"/sys/block/$basename/queue/logical_block_size")
case "$(<"/sys/class/block/$basename/queue/zoned")" in
host-managed|host-aware)