As part of fixing the IO priority of filewalker related
processes such as the garbage collection and used-space
calculation, this change allows the initial used-space
calculation to run as a separate subprocess with lower
IO priority.
This can be enabled with the `--storage2.enable-lazy-filewalker`
config item. It falls back to the old behaviour when the
subprocess fails.
Updates https://github.com/storj/storj/issues/5349
Change-Id: Ia6ee98ce912de3e89fc5ca670cf4a30be73b36a6
The cmd/storagenode/main.go is a big mess right now with so many
unneeded config structures initialized and shared by several
subcommands.
There are many instances where the config structure of one subcommand
is mistakenly used for another subcommand.
This changes is an attempt to clean up the main.go by moving the
subcommands to a separate `cmd_*.go` files with separate config structures
for each subcommand.
Resolves https://github.com/storj/storj/issues/5756
Change-Id: I85adf2439acba271c023c269739f7fa3c6d49f9d
