When using llmount.sh with its default configuration, the paths to the ost(s) and mdt(s) looks like this:
/mnt/<component><id> (for example "/mnt/ost1")

Because those paths are not specific to the filesystem they are related to, when mounting two different filesystems with llmount.sh, the first one's ost(s) and mdt(s) are replaced by the second's.