Filesystems

AppArmor can prevent its own policy from being altered, and prevent filesystems from being mounted/unmounted, but does nothing to prevent users from stepping outside their approved realms of control.

Efforts to reconcile concepts that differ between Unix and Windows systems include: * A Cygwin-specific version of the Unix mount command allows mounting Windows paths as "filesystems" in the Unix file space.

File fragmentation on JFS impairs filesystem performance less than on more traditional Linux ext3 filesystems.

Filesystems going through the device mapper interface (including software RAID and LVM implementations) may not support barriers, and will issue a warning if that mount option is used.

In addition to its use in databases, the B-tree is also used in filesystems to allow quick random access to an arbitrary block in a particular file.

In Unix filesystems, filenames are usually case-sensitive.

Journal placement By default, XFS filesystems are created with an "internal" log, which places the filesystem journal on the same block device as the filesystem data.

Retrieved from: citation citation Side effects are the most common way that a program interacts with the outside world (people, filesystems, other computers on networks).

Some filesystems, like ext3, effectively allocate the free block that is nearest to other blocks in a file.

The Atari OS only offered low-level disk-access, so an extra layer called DOS was booted off a floppy that offered higher level functions such as filesystems.

These newer filesystems include Hierarchical File System (HFS) (not to be confused with Apple's Hierarchical File System ) and zFS (not to be confused with Sun's ZFS ).

This method has gained influence within North America, as most common computer filesystems make the use of slashes difficult or impossible.

To maintain backward-compatibility with legacy applications (on DOS and Windows 3.1 ), on FAT and VFAT filesystems an 8.3 filename is automatically generated for every LFN, through which the file can still be renamed, deleted or opened..

XFS filesystems can be grown so long as there is remaining unallocated space on the device holding the filesystem.