Lift the one-device/one-volume cap. bringUpVolume now probes the whole
partition table (allVolumes uncapped) and spawns a confined filesystem
per volume; pollTick loops it to adopt every present, not-yet-adopted
device each tick.
The subtlety is adopt-once-and-keep: a device is recorded in the table
the first time it is seen and kept until it leaves the tree, even when it
carries no servable volume or its geometry cannot be read. Dropping an
unservable device would make openAnyStorage hand back the same one every
tick and starve the devices behind it; keeping it lets the scan advance
past it. A genuine removal frees the slot; a re-insert (fresh device id)
is probed anew.
The boot image is a single bare-FAT volume, so the full suite is
unchanged at 128/128.
Daniel Samson
b2a5a0a3c6