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XFS is a high-performance 64-bit journaling file system created by Silicon Graphics, Inc (SGI) in 1993. [7] It was the default file system in SGI's IRIX operating system starting with its version 5.3.
Unionfs is a filesystem service for Linux, FreeBSD and NetBSD which implements a union mount for other file systems.It allows files and directories of separate file systems, known as branches, to be transparently overlaid, forming a single coherent file system.
Individual files can be up to 2 terabytes in size. Version 5 was introduced in VxFS 3.5 and is no longer supported under VxFS 5.1. [8] Version 6 added support for file systems and files up to 8 exabytes (2 63 bytes) in size. Version 6 also introduced support for named streams/resource forks, for multiple underlying volumes, and for file change ...
A file system with a logical journal still recovers quickly after a crash, but may allow unjournaled file data and journaled metadata to fall out of sync with each other, causing data corruption. For example, appending to a file may involve three separate writes to: The file's inode, to note in the file's metadata that its size has increased.
The ext4 file system resides in a disk image, which is treated as a file (or multiple files, depending on the hypervisor and settings) in the NTFS host file system. Having multiple file systems on a single system has the additional benefit that in the event of a corruption of a single file system, the remaining file systems will frequently ...
The need and specification of a kernel mode Linux union mount filesystem was identified in late 2009. [1] The initial RFC patchset of OverlayFS was submitted by Miklos Szeredi in 2010. [2] By 2011, OpenWrt had already adopted it for their use. [3] It was merged into the Linux kernel mainline in 2014, in kernel version 3.18.
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The ext4, Btrfs, XFS, JFS, and F2FS file systems include support for the discard (TRIM or UNMAP) function. To make use of TRIM, a file system must be mounted using the discard parameter. Linux swap partitions are by default performing discard operations when the underlying drive supports TRIM, with the possibility to turn them off.