Efforts have been made to port Coda to Microsoft Windows, from the Windows 95/ Windows 98 era, Windows NT to Windows XP, by means of open source projects like the DJGCC DOS C Compiler and Cygwin. Subsequently, obsoleted there, an effort is under way to bring it back.
#CODA 2 EXTENSIONS MANUAL#
Coda has extensive repair tools, both manual and automated, to handle and repair both types of conflicts.Ĭoda has been developed on Linux and support for it appeared in the 2.1 Linux kernel series. The former case is called a "local/global" conflict, and the latter case a "server/server" conflict. Optimistic replication can potentially cause concurrent updates to different servers on the same object, preventing replication. Disconnected operation's local updates can potentially clash with other connected users' updates on the same objects, preventing reintegration. These unique features introduce the possibility of semantically diverging copies of the same files or directories, known as "conflicts". Though it tries to be fully compatible, it features its own extensions and improvements. Coda allows all servers to receive updates, allowing for a greater availability of server data in the event of network partitions, a case which AFS cannot handle. Octave is the Matlab-clone which comes closest to the original.
AFS uses a pessimistic replication strategy with its files, only allowing one read/write server to receive updates and all other servers acting as read-only replicas. Then it transitions back to normal connected-mode operation.Īlso different from AFS is Coda's data replication method. Upon network reconnection, the client moves to reintegration state it sends logged updates to the servers. This operating state is called disconnected operation. If the network connection is lost, the Coda client's local cache serves data from this cache and logs all updates. During normal operation, a user reads and writes to the file system normally, while the client fetches, or "hoards", all of the data the user has listed as important in the event of network disconnection.
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