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+======
+dm-ebs
+======
+
+
+This target is similar to the linear target except that it emulates
+a smaller logical block size on a device with a larger logical block
+size. Its main purpose is to provide emulation of 512 byte sectors on
+devices that do not provide this emulation (i.e. 4K native disks).
+
+Supported emulated logical block sizes 512, 1024, 2048 and 4096.
+
+Underlying block size can be set to > 4K to test buffering larger units.
+
+
+Table parameters
+----------------
+ <dev path> <offset> <emulated sectors> [<underlying sectors>]
+
+Mandatory parameters:
+
+ <dev path>:
+ Full pathname to the underlying block-device,
+ or a "major:minor" device-number.
+ <offset>:
+ Starting sector within the device;
+ has to be a multiple of <emulated sectors>.
+ <emulated sectors>:
+ Number of sectors defining the logical block size to be emulated;
+ 1, 2, 4, 8 sectors of 512 bytes supported.
+
+Optional parameter:
+
+ <underyling sectors>:
+ Number of sectors defining the logical block size of <dev path>.
+ 2^N supported, e.g. 8 = emulate 8 sectors of 512 bytes = 4KiB.
+ If not provided, the logical block size of <dev path> will be used.
+
+
+Examples:
+
+Emulate 1 sector = 512 bytes logical block size on /dev/sda starting at
+offset 1024 sectors with underlying devices block size automatically set:
+
+ebs /dev/sda 1024 1
+
+Emulate 2 sector = 1KiB logical block size on /dev/sda starting at
+offset 128 sectors, enforce 2KiB underlying device block size.
+This presumes 2KiB logical blocksize on /dev/sda or less to work:
+
+ebs /dev/sda 128 2 4