Hello, I am considering writing a tool to perform data integrity checking on filesystems which do not support it internally (e.g. ext4). When storing long-term backups, I would like to be able to detect bit rot or other corruption to ensure that I have intact backups. The method I am considering is to recreate the directory structure of the backup directory in a "shadow" directory tree, and then hash each of the files in the backup directory and store the hash in the same filename in the shadow directory. Then, months later, I can traverse the backup directory, taking a hash of each file again and comparing it with the hash stored in the shadow directory tree. If the hashes match, then the file's integrity has been verified (or at least has not degraded since the shadow directory was created). Does this seem like a reasonable approach for checking data integrity, or is there an existing tool or different method which would be better? Thanks, Andrew Martin -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
