I have a similar problem. We have a log shipping setup for DR. The transaction log file of the secondary database, which is in restoring mode, is 7 times larger than the data file and is filling up the disk. What are the possible causes and the fixes?

Note that it is the transaction log file of the secondary database the is growing fast.

For your information, for the corresponding primary database, we take Full backup every night and transaction log backup every 30 minutes.

Thanks