1、The SCSI subsystem is one of these block device drivers.
2、The loop device is a device driver that allows you to mount a file as a block device and then interpret the file system it represents.
3、You can transparently encrypt a block device or a logical volume with dm_crypt.
4、Act as a forwarder of interrupts and requests from several virtual drivers: cobd (block device), conet (network), and cocon (console).
5、Since persistent storage is a block device, locking is controlled by the host it is assigned to (Figure 2).
6、When a process waits for a block device data request to complete, it incurs I/O wait time, and all idle time becomes wait time.
7、The root directory entry (dentry) object is cached here also, as is the block device on which this file system resides.
8、Well, what really happens is that each block device, such as a hard drive partition, CD-ROM, or floppy disk, actually has a filesystem on it.
