Index is basically a list of files and directories and their checksums that will be reconstructed when image is downloaded. The indexes are stored in /var/lib/ciruela/indexes.

Supported index formats:

Indexes are named by it’s own hash (not the hash of the index file itself but the hash that is stored in the bottom line of the index file). The first two characters of a hash file are the directory name, so the full path of the index file is:


Note: we store all indexes here regardless of which user requested the upload and what directory it should be put into. Retention policy of index files is very much different to the retention of the files themselves. In the first implementation we keep all indexes that are used anywhere in the cluster on every node. We’re considering to tighten the scope in future.