Object Storage Service:ossfs 2.0 release history

Version information

Description

Release date

October 27, 2025

Download links

Alibaba Cloud Linux/CentOS (x86_64): ossfs2_2.0.4_linux_x86_64.rpm

Ubuntu (x86_64): ossfs2_2.0.4_linux_x86_64.deb

Alibaba Cloud Linux 3 (aarch64): ossfs2_2.0.4_linux_aarch64.rpm

Change log

New operating systems and architectures:

• Added support for Alibaba Cloud Linux 3 on the ARM architecture.

Other changes:

• Fixed a program crash that could occur when system memory is critically low.

• Fixed an issue of excessive memory usage when many files are opened simultaneously.

Version information

Description

Release date

September 17, 2025

Download links

Alibaba Cloud Linux/CentOS: ossfs2_2.0.3_linux_x86_64.rpm

Ubuntu: ossfs2_2.0.3_linux_x86_64.deb

Change log

New features:

• Added the ETag as a basis for determining whether file content has changed.

Other changes:

• Added support for viewing mount option details with `ossfs2 mount --help`.

• Reduced memory overhead when running the `ls` command on large directories.

• Enhanced the `prefetch_chunks` mount option to support a value of -1, which disables the prefetch memory limit.

• Fixed other stability issues.

Version information

Description

Release date

July 16, 2025

Download links

Alibaba Cloud Linux/CentOS: ossfs2_2.0.2beta_linux_x86_64.rpm

Ubuntu: ossfs2_2.0.2beta_linux_x86_64.deb

Change log

New operating system support:

• Ubuntu 20.04, Ubuntu 22.04, and Ubuntu 24.04

New features:

• Added the `--ram_role` mount option to support using an ECS RAM role as the OSS access credential.

• Added the `--oss_negative_cache_timeout` and `--oss_negative_cache_size` mount options. These options cache OSS requests that previously returned a 404 Not Found error to reduce subsequent duplicate requests.

Other changes:

• Fixed other stability issues.

Version information

Description

Release date

May 30, 2025

Download links

Alibaba Cloud Linux/CentOS: ossfs2_2.0.1beta_linux_x86_64.rpm

Change log

New operating system support: CentOS 7 and CentOS 8

New features:

• Added support for configuring AccessKey ID and AccessKey Secret access credentials using environment variables.

• Added the `uid`, `gid`, `file_mode`, and `dir_mode` mount options to specify global permission settings during mounting.

• ossfs now automatically sets the Multipurpose Internet Mail Extensions (MIME) type of an OSS object based on its file name extension when writing the file.

Other changes:

• Optimized log content. For example, if an OSS request fails, the output now includes the corresponding RequestID and EC error code.

• Added a default `total_mem_limit` parameter on machines with 16 GB or less of system memory.

• Fixed other stability issues.

Version information

Description

Release date

March 25, 2025

Download links

Alibaba Cloud Linux: ossfs2_2.0.0beta_linux_x86_64.rpm

Change log

Initial release of ossfs 2.0.