![]() ![]() Google Patents US9503127B2 - Data deduplication with adaptive erasure code redundancy ℹ️About GitHub Wiki SEE, a search engine enabler for GitHub WikisĪs GitHub blocks most GitHub Wikis from search engines.US9503127B2 - Data deduplication with adaptive erasure code redundancy ⚠️ ** Fallback** ⚠️ □️ Page Index for this GitHub Wiki The -erasure-coding option enables Erasure coding. When not specified, an empty repository path is written to the preferences file, causing Duplicacy to treat its current working directory as the repository root. This option allows for the possibility of the repository configuration files and the repository itself being maintained in separate file system locations. Relative paths are relative to the current working directory of Duplicacy at the time it is executed (when the preferences file is being parsed). This may be specified as either an absolute or relative path. The -repository option specifies how the repository root directory is defined in the preferences file. duplicacy file contains the absolute path name to the preferences directory. duplicacy file is created in the repository. If specified, it must point to a non-existing directory. This option controls the location of the preferences directory. The -pref-dir option is deprecated and the -repository option should be used instead. The -iterations option specifies how many iterations are used to generate the key that encrypts the config file from the storage password. Once a storage has been initialized with certain chunk size parameters, these parameters cannot be modified any more. If the chunk size is too large, the effect of de-duplication will be less obvious as more data will need to be transferred with each chunk. If the chunk size is too small, a lot of overhead will be in sending requests and receiving responses. Their values are important to the overall performance, especially for cloud storages. The three chunk size parameters are passed to the variable-size chunking algorithm. If you have already created an encrypted storage to which you are now connecting, you will have to add the -e flag, so that you will be asked to enter the encryption password. The storage password is used to encrypt the config file only. If encryption is enabled, you will be prompted to enter a storage password. The -e option controls whether or not encryption will be enabled for the storage. A snapshot id must contain only alphanumeric characters as well as - and _. Each repository must have a unique snapshot id. The snapshot id is an id used to distinguish different repositories connected to the same storage. duplicacy in the repository and put a file named preferences that stores the snapshot id and encryption and storage options. Under the hood, it will create a directory named. ![]() This default storage actually has a name, default.Īfter that, it will prepare the current working directory as the repository to be backed up. The initialized storage will then become the default storage for other commands if the -storage-name option is not specified for those commands. Otherwise, it will create the configuration file from the options and upload the file.ĭuplicacy will not create the destination folder on the storage if the folder does not exist. If the storage has been already initialized before, it will download the storage configuration (stored in the file named config) and ignore the options provided in the command line. The init command first connects to the storage specified by the storage URL. ![]() erasure-coding : enable erasure coding to protect against storage corruption repository initialize a new repository at the specified path rather than the current working directory key the RSA public key to encrypt file chunks storage-name assign a name to the storage duplicacy directory (absolute or relative to current directory) iterations the number of iterations used in storage key derivation (default is 16384) min-chunk-size, -min the minimum size of chunks (default is chunk-size/4) max-chunk-size, -max the maximum size of chunks (default is chunk-size*4) chunk-size, -c the average size of chunks (default is 4M) ![]() encrypt, -e encrypt the storage with a password Duplicacy init - Initialize the storage if necessary and the current directory as the repository ![]()
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