template: starter template for 2 monitors and 4 commands

Signed-off-by: David Sterba <dsterba@suse.cz>
test: update parallel fs_mark

Move and add --subvols option.

Signed-off-by: David Sterba <dsterba@suse.cz>
test: random data read/verify

Polish and promote.

Signed-off-by: David Sterba <dsterba@suse.cz>
lib: add dstat and fi df watchers

Signed-off-by: David Sterba <dsterba@suse.cz>