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In modern computing, journaling is a capability which ensures consistency of data in the file system, despite any power outages or system crash that may occur. XFS provides journaling for file system metadata, where file system updates are first written to a serial journal before the actual disk blocks are updated.
A journaling file system is a file system that keeps track of changes not yet committed to the file system's main part by recording the goal of such changes in a data structure known as a "journal", which is usually a circular log.
Supports file system journaling, enabling recovery of data after a system crash. Also referred to as 'Mac OS Extended format or HFS Plus; HPFS – High Performance File System, used on OS/2; HTFS – High Throughput Filesystem, used on SCO OpenServer; ISO 9660 – Used on CD-ROM and DVD-ROM discs (Rock Ridge and Joliet are extensions to this)
Journaled File System (JFS) is a 64-bit journaling file system created by IBM. There are versions for AIX , OS/2 , eComStation , ArcaOS and Linux operating systems . The latter is available as free software under the terms of the GNU General Public License (GPL).
ext4 (fourth extended filesystem) is a journaling file system for Linux, developed as the successor to ext3.. ext4 was initially a series of backward-compatible extensions to ext3, many of them originally developed by Cluster File Systems for the Lustre file system between 2003 and 2006, meant to extend storage limits and add other performance improvements. [4]
According to the vendor, it was the first commercial journaling file system. [3] That claim can be taken in two ways, i.e., the first implementation of a journaling file system in a commercial context, or the first file system available as an unbundled product. Dan Koren is cited as one of the original developers of VxFS. [4]
Soft updates is an approach to maintaining file system metadata integrity in the event of a crash or power outage. Soft updates work by tracking and enforcing dependencies among updates to file system metadata. Soft updates are an alternative to the more commonly used approach of journaling file systems.
InterMezzo is designed to work on top of an existing journaling file system such as ext3, JFS, ReiserFS or XFS. It was developed around 1999. An InterMezzo system consists of a server, which holds the master copy of the file system, and one or more clients with a cache of the file system. It works either in a replication mode, in which a client ...