7、The root directory entry (dentry) object is cached here also, as is the block device on which this file system resides.
3、You can transparently encrypt a block device or a logical volume with dm_crypt.
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.
5、Since persistent storage is a block device, locking is controlled by the host it is assigned to (Figure 2).
4、Act as a forwarder of interrupts and requests from several virtual drivers: cobd (block device), conet (network), and cocon (console).
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.
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.
1、The SCSI subsystem is one of these block device drivers.