rename _symlink to _symlink_new_path_from_old
extract _create to Creator object
make creation parameters die with invalid params
make group_subdirectory an optional param to create
move owner_class_name validation into CreationParams
verify id given to CreationParameters
move kilobytes_requested validation
move disk_group_name validation to CreationParams
extract individual validate methods
get disk group from CreationParameters
move group_subdirectory validation into CreationParameters
sanitize and validate mount_path in CreationParameters
sanitize before validation
remove redundant mount_path validation
remove redundant volume status validation
extract candidate volume methods
line width formatting
factor top level candidate_volumes method
extract wait_for_database_pause
remove unused local variables