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Yes I was wondering what is the benefit of cernvm filesystem vs other HTTP based fuse mounts (http, swift/s3)?
by krnlpnc 4y ago
Yes I was wondering what is the benefit of cernvm filesystem vs other HTTP based fuse mounts (http, swift/s3)?
- tempay 4y ago* file catalog and associated metadata come from SQLite files so listing directories and stating files is fast * data is chunked and de-duplicated * catalogues are signed so you can use untrusted HTTP proxies and still ensure integrity
- jblomer 4y agoA key difference is that the file system contents is preprocessed into content-addressable storage (somewhat similar to the format in a .git folder). Also a number of features and optimizations to make it work well as a shared software area, which is characterized by many small, often memory-mapped files and a meta-data heavy access pattern.