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SAN Fusion is an easy and cost-effective solution that allows you to use Avid Media Composer with your existing Xsan infrastructure.
By using an existing Xsan volume as a backing-store for SAN Fusion's virtualized workspaces, editors can experience authentic Unity-style bin sharing and locking from within Media Composer 5.5.3 or later. Unlike other solutions that purport to make Avid work with Xsan, SAN Fusion is a client-side application with no additional server or minimum number of seats to buy.
SAN Fusion clients mount and unmount workspaces on demand through our intuitive GUI to provide Media Composer a real-time translation layer between it and Apple's Xsan filesystem. The end result is the best of both worlds: Avid's first class bin and media sharing combined with Apple's storage-agnostic low (or no) cost cluster filesystem.
Version 1.5.3:
Application UI
- Users can select and mount up-to 24 workspaces concurrently. Previous behavior forced the user to mount/unmount workspaces one-at-a-time. Note: The mount and unmount buttons are automatically enabled/disabled depending on the selection's mount status. Selecting multiple workspaces with mixed mount statuses is not supported.
File System
- Extended attributes are now handled entirely through AppleDouble files
- Permission checks are now deferred to file operations themselves
- Added the ability to append custom mount options to the default mount options using static configuration files. Note: This feature should only be used when instructed to do so by support.
File System Driver (3.1.0)
- The kernel extension does no longer use the first free slot when registering FUSE character devices. In practice there are kernel internal devices that use absolute index values, which will stomp on free-slot based assignments that happen before them. Slot 12 is considered a safe starting index for Mac OS X 10.5 to 10.7, 24 for OS X 10.8 and later.
- Improve compatibility with Finder on OS X 10.11 - Unless allow_root or allow_other is set we limit vnode operations to the user that mounted the file system. Starting with OS X 10.11 DesktopServicesHelper, which is running as root, calls access(2) on behalf of Finder when trying to delete a directory. Blocking this request results in Finder aborting the delete process. Therefore we are no longer enforcing allow_root or allow_other for vnop_access
- Fix mount-init-unmount race condition - The volume might be unmounted before we are able to complete the asynchronous FUSE_INIT process. This could result in a "trying to interlock destroyed mutex" kernel panic.
- Fix mount-init-abi race condition - Wait until the FUSE session is initialized before generating user space requests. We do not know which ABI version to use until the initialization process is complete.
Known Issues
- Issue: Some users have reported that files saved directly to the workspace's document bundle appear to be missing when using Finder or ls to list the file system's mount point. Workaround: In at least one case, after running xattr -c -rsv on the workspace's document bundle, missing files appeared almost immediately. In all cases, users who experienced files missing from directory listings indicated that reverting to SAN Fusion 1.0.6 corrected the issue. If you should experience this issue, please generate a support dump as quickly as possible post file system event by running Help > Collection Support Information from the application's main menu before contacting support. The support dump contains system logs and files that will assist our efforts to resolve this problem.
- OS X 10.8.5 or later (including OS X 10.11)
- 8GB of RAM (16GB recommended)
- Xsan 3 or later, StorNext 4.2.1 or later, or NFSv3
- Media Composer 7.0.4 or later (including version 8.5)
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