blobfuse2-2.0.0-preview.1

First Release

Top Features

• Compatibility with libfuse3, including libfuse2 compatibility for OSes that do not support libfuse3
• Service version upgrade from "2018-11-09" to "2020-04-08" (STG77) through the azure-go-sdk
• Maximum blob size in a single write 64MB -> 5000MB
• Maximum block size 100MB -> 4000MB
• Maximum file size supported 4.77TB -> 196TB
• File creation time and last access time now pulled from service
• Passthrough directly from filesystem calls to Azure Storage APIs
• Read streaming (helpful for large files that cannot fit on disk)
• Logging to syslog or a file
• Mount a subdirectory in a container
• Mount all containers in an account
• Automatic blobfuse2 version checking and prompt for users to upgrade
• Encrypted config support
• Present custom default permissions for files in block blob accounts
• Attribute cache invalidation based on timeout
• Set custom default blob tier while uploading files to container
• Pluggable cache eviction policies for file cache and streaming

User Experience
Blobfuse2 supports a special command that will accept the v1 CLI parameters and v1 config file format, convert it to a v2 config format and mount with v2.

Blobfuse2 exposes all supported options in a clean yaml formatted configuration file in addition to a few common options exposed as CLI parameters. In contrast, Blobfuse exposes most of its options as CLI parameters and a few others in a key-value configuration file.

Validation
Extensive suite of validation run with focus on scale and compatibility.

Various improvements/parity to existing blobfuse validated like

• Listing of >1M files: Parity under the same mount conditions.
• Git clone: Outperforms blobfuse by 20% in git clone (large repo, with over 1 million objects).
• resnet-50: Parity at 32 threads.