OCFS2 is said to be one of the most important topics today as it has a significant impact on people's lives. It doesn't matter if you are a student, a professional, an art lover or a technology expert, OCFS2 is a topic that undoubtedly concerns you. In this article, we will cover different aspects of OCFS2, from its history to its relevance in modern society. We will also explore the various opinions and perspectives surrounding OCFS2, with the goal of providing a comprehensive view of the topic. Get ready to immerse yourself in the fascinating world of OCFS2 and discover its impact on today's world!
Developer(s) | Oracle Corporation |
---|---|
Full name | Oracle Cluster file System |
Introduced | March 2006 with Linux 2.6.16 |
Limits | |
Max volume size | 4 PB (OCFS2) |
Max file size | 4 PB (OCFS2) |
Max filename length | 255 bytes |
Allowed filename characters | All bytes except NUL and '/' |
Features | |
Dates recorded | modification (mtime), attribute modification (ctime), access (atime) |
File system permissions | Unix permissions, ACLs and arbitrary security attributes (Linux 2.6 and later) |
Transparent compression | No |
Transparent encryption | No |
Data deduplication | No |
Copy-on-write | Yes |
Other | |
Supported operating systems | Linux |
The Oracle Cluster File System (OCFS, in its second version OCFS2) is a shared disk file system developed by Oracle Corporation and released under the GNU General Public License. The first version of OCFS was developed with the main focus to accommodate Oracle's database management system that used cluster computing. Because of that it was not a POSIX-compliant file system. With version 2 the POSIX features were included.
OCFS2 (version 2) was integrated into the version 2.6.16 of Linux kernel. Initially, it was marked as "experimental" (Alpha-test) code. This restriction was removed in Linux version 2.6.19. With kernel version 2.6.29 in late 2008, more features were included into ocfs2, such as access control lists and quotas.
OCFS2 used a distributed lock manager which resembles the OpenVMS DLM but is much simpler. Oracle announced version 1.6 in November 2010 which included a copy on write feature called reflink.