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association of the file with a loop device node, mounting of the loop device at a mount point directory; These two operations can be performed either using two separate commands, or through special flags to the mount command. The first operation may be performed by programs such as losetup [8] in Linux, or lofiadm [9] in SunOS.
Cryptoloop can create an encrypted file system within a partition or from within a regular file in the regular file system. Once a file is encrypted, it can be moved to another storage device . This is accomplished by making use of a loop device , a pseudo device that enables a normal file to be mounted as if it were a physical device.
Loop device: a similar mechanism, but uses a local file instead of a remote one; DRBD: Distributed Replicated Block Device is a distributed storage system for the Linux platform; ATA over Ethernet: send ATA commands over Ethernet; USB/IP: A protocol that provides network access to USB devices via IP. [2] [3]
The compressed loop device (cloop) is a module for the Linux kernel.It adds support for transparently decompressed, read-only block devices.It is not a compressed file system: cloop is mostly used as a convenient way to compress conventional file systems onto Live CDs.
A loop device is a device that corresponds to a file, usually a disk image. Mounting a loop device allows the file to be accessed as a filesystem. This allows it to be used as a virtual drive. For example, a virtual disk image can be mounted as a regular filesystem. $
The device mapper is a framework provided by the Linux kernel for mapping physical block devices onto higher-level virtual block devices. It forms the foundation of the logical volume manager (LVM), software RAIDs and dm-crypt disk encryption, and offers additional features such as file system snapshots .
ln — Create a link between FROM and TO. logger — Log message (or stdin) to syslog. login — Log in as a user, prompting for username and password if necessary. logname — Print the current user name. losetup — Associate a loopback device with a file, or show current file (if any) associated with a loop device. ls — List files.
udev (userspace /dev) is a device manager for the Linux kernel.As the successor of devfsd and hotplug, udev primarily manages device nodes in the /dev directory. At the same time, udev also handles all user space events raised when hardware devices are added into the system or removed from it, including firmware loading as required by certain devices.