>> What about multiple errors detection with crc32? >> Is it work?
CM> This will depend on who you ask. Over the long term, btrfs will CM> support a number of stronger checksums for metadata and data. CM> There are 256 bits reserved in the metadata blocks, and the file data CM> checksums don't require a fixed size, so it will be possible to have CM> different sized checksums on different files. Are checksums is per device block or per extent or per file? CM> In practice, 32 bit crcs are a good tradeoff between performance and CM> safety. Some people will surely want better, and we'll examine other CM> algorithms as the FS matures. And what if the (block with) checksums will be corrupted but not data itself? _______________________________________________ Btrfs-devel mailing list [email protected] http://oss.oracle.com/mailman/listinfo/btrfs-devel
