What is the difference between xfs and ext3

How to create these filesystems. How to convert from one filesystem type to another. Ext2 Ext2 stands for second extended file system. It was introduced in This was developed to overcome the limitation of the original ext file system. Ext2 does not have journaling feature. Developed by Stephen Tweedie. Starting from Linux Kernel 2. The main benefit of ext3 is that it allows journaling.

Journaling has a dedicated area in the file system, where all the changes are tracked. When the system crashes, the possibility of file system corruption is less because of journaling. Journal — Metadata and content are saved in the journal.

Ordered — Only metadata is saved in the journal. Metadata are journaled only after writing the content to disk. This is the default. Writeback — Only metadata is saved in the journal. Metadata might be journaled either before or after the content is written to the disk. Best for extremely large file systems, large files, and lots of files Journaled an asymmetric parallel cluster file system version is also available POSIX extended access controls The XFS file system is Open Source and included in major Linux distributions.

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Depending on the answers to the above questions, your choice might be obvious. If both your server and your storage device are large, and there is no need to shrink reduce the filesystem size, XFS is likely to be the best choice. Even with smaller storage arrays, XFS performs very well when the average file sizes are large for example, hundreds of megabytes in size. Two key advantages of Ext4 over Ext3 on the same storage include faster file system check and repair times and higher streaming read and write performance on high-speed devices.

For anything with higher capability, XFS tends to be faster. We recommend that you measure the performance of your specific application on your target server and storage system to make sure you choose the appropriate type of file system. Red Hat Enterprise Linux 6 has new file system capabilities and performance characteristics. This makes it possible for multiple users on multiple machines to share files and storage resources. Such file systems are built from one or more servers that export to one or more clients a set of file systems.

The client nodes do not have access to the underlying block storage, but rather interact with the storage using a protocol that allows for better access control. Historically, these systems have used L2 networking technologies like Gigabit Ethernet to provide reasonably good performance for a set of clients.

Red Hat Enterprise Linux provides both an NFS server component that is used to export a local file system over the network and an NFS client that can be used to import these file systems. Shared storage file systems, sometimes referred to as cluster file systems, give each server in the cluster direct access to a shared block device over a local storage area network SAN.

Cache coherency is paramount in a clustered file system to ensure data consistency and integrity. There must be a single version of all files in a cluster visible to all nodes within a cluster. In order to prevent members of the cluster from updating the same storage block at the same time and causing data corruption, shared storage file systems use a cluster wide-locking mechanism to arbitrate access to the storage as a concurrency control mechanism.

The Ext4 filesystem Extended filesystem is the fourth generation of the Ext filesystem family whose origin can be traced back to the Minix operating system which was first introduced in The Ext filesystem is the first filesystem to underpin the Linux kernel when it was unveiled back in It came into the picture in , with Linux 2.

Ext4 perfectly manages many small files and ensures metadata is correctly written even write cache loses power.