The 'nodev' is intended to indicate
"whether the file system is mounted on a block device" https://red.ht/3toGT5b
Use this info to set nodev items to passno 0, and default to 1 for
non-nodev or if the filesystem isn't present there.
Except that /proc/filesystems doesn't list 'swap' or 'none', so special
case those to passno 0.
storage_config: return one type: disk action per multipathed disk
Currently extract_storage_config returns one type: disk action
for every member of a multipathed disk and type: partition
actions for each partition of each disk. This works by generating
a type: disk action for each disk and ignoring the block device
data for the /dev/dm-X device for the multipathed disk.
But in groovy+, the udev rule from multipath-tools that has
always attempted to remove the devices nodes for the partitions
of a disk that is a multipath member actually succeeds, and
trying to generate a type: partition action for a partition with
no underlying device node makes things blow up.
Instead, this branch generates type: disk and type: partitions
actions from the /dev/dm-X nodes for the mutipathed disk and its
partitions, and ignores and disks and partitions that are members
of a multipathed disk.
