deajan / osync2 Goto Github PK

Success of osync v1 was partly because of:

• Support for POSIX acl / xattr sync
• Stateless sync
• Using SSH as existing transport / encryption layer
• Works almost everywhere where bash exists

osync v1 cons are:

• Code is quite big and complicated to maintain in bash
• Utterly slow
• No realtime sync (got almost near realtime with osync-target-helper)
• Could not detect file moves because of the stateless working method

Problems with osync2 reflexions so far:

• Using rsync over ssh is quite slow, especially for realtime sync
  • Need a http listener with self encryption (not https dependant)

In order for osync2 to become a good replacement, the recipe should include:

• Realtime sync possibility (using file observer)
• Support for POSIX acl / xattr
• Move away from SSH and use own comm protocol to transfer files / messages, can be SSH-tunnel wrapped ?
• Must have precompiled binaries to work in most environments (Nuitka ?) including Windows (yes... Windows support for osync2 should be real, without posix layer)
• Using rsync is no longer an option for realtime sync, we need to move to a rsync delta algorithm implementation, and implement ACL replication above that

Open questions:

• Shall we include a full osyncV1 compatibility mode with stateless sync over SSH ?
  • Hmmm. osync v1 already does the job, so osync v1 needs to be maintained in parallel to osync2

Open to any suggestions.