Release notes for build #1488, release September 18, 2018

Build 1.12.1488 

New Features:

• MacOS: The installer name now contains version; added also into plist.
• Linux: set proper version for the installer.
• Unix permissions: implement `chmod` and `chown` unix commands.

File/Folder permissions are global, i.e. they will be shared and visible across all Unix Lucid clients, connected to that file system. For example, if you set execute permissions for a file in Linux, the same file will still be executable in OSX or another Linux Lucid client.

As a distributed file system, sharing owner and group of a file/folder across different Lucid clients doesn't make much sense, unless all Unix users/groups are not "synced" across the whole file system, which would be very uncomfortable requirement. For this reason, owner/group IDs are **per Lucid client**. This means, that any user can change any other user's data, as long as it's connected via another Lucid client.

By default (if the `chown` is not explicitly executed on a file/folder), Lucid will report owner/group ID for all files and folders to be the owner/group ID of the user, started Lucid.

In the general use-case, these permissions do not provide better security, they are for better user experience and for tools, which explicitly check and validate files/folders' permissions (e.g. working with `.pem` files). This security will be provided by custom access control lists.

• Updating Lucid client daemon and UI application

   Now, the UI will check automatically for a newer version at every start. If the user confirms, the upgrade process will automatically download and execute the installer.

Added a new CLI command to Lucid with two options: "lucid update --check" and "lucid update --download".

• Windows: Updated CBFS Connect to version 2017.0.9.
• LucidLink 16GB File space limitations:
• New command: `LucidHub fs-limits [--data <GiB>] [--entries <Entries>]`

-   no params - returns the current limits configuration

           (0 for no limitations);

       -   `--data <GiB>` sets the file space data limit;

       -   `--entries <Entries>` sets the file space entries

           (files, dirs, symlinks) limit.

• Data limit reporting:

       -   When there is **no** data limit set, we report 1PiB limit and

           1PiB free space at all times;

       -   When there is data limit set, we report the real limit and

           the real used space.

       -  Limit reached behavior:

       -   When the *data* limit is reached, we forbid `create`, `write` and

           `truncate` operations. The Lucid client can only `read` and `delete`;

       -   When the *entries* limit is reached, we forbid only the `create` operation.

• LucidHub now caches the file space data size. It is recalculated once a minute.

   There is a new optional parameter `--recalculate` added to `LucidHub stats`

   command that updates the cached values.

• New rest call in the Lucid client: `app/fsSize` - contains the current data size, entries and the corresponding limits.
• HTTP proxy support

    The Lucid client now supports running behind an HTTP proxy that supports

    CONNECT tunelling of SSL traffic. Basic authentication is supported. The proxy

    configuration is specified using a URL in the following format:

    "[protocol://][user:password@]proxyhost[:port]".

    It can be passed either on the command line as a `--proxy` option on the

    `link`, `activate` and `update` commands, or in the UI app configuration file

    in `.lucid/app.json` in the "proxy" config parameter.

Bug fixes:

• Windows: fix free space reporting when accessing Lucid via the Windows Explorer favorites bar.
• Linux: fix free space reporting (from 17TiB to 1PiB).
• Improve Lucid behavior when the client's machine runs out of disk space (immediately fail writes when the local cache cannot consume them;
• Fix Lucid crash when the local metadata (LMDB) cannot be expanded).
• Linux and MacOS: improve statfs behavior.
• Now using .lucid as the default root-path, no matter how Lucid was started (UI vs command line). Moved the Lucid.json config file and the Lucid.log log file directly under the `.lucid` directory, removing the `client` subdirectory.
• UI: fix nothing happening when clicking the "Initialize" link in the webportal more than once.
• UI: Add show/hide button for shared secret on login and initialization screens.
• LucidHub: Fix a potential deadlock when using a small number of threads.
• Added a required `--provider` option when initializating a filespace using the init-s3 command of
     the Lucid client.
• Fixed file space initialization failing to create a bucket in the Paris AWS region.