1 What: /sys/block/loopX/loop/autoclear
2 Date: Aug, 2010
3 KernelVersion: v2.6.37
4 Contact: linux-block@vger.kernel.org
5 Description:
6 (RO) Shows if the device is in autoclear mode or not ( "1" or
7 "0"). Autoclear (if set) indicates that the loopback device will
8 self-distruct after last close.
9
10 What: /sys/block/loopX/loop/backing_file
11 Date: Aug, 2010
12 KernelVersion: v2.6.37
13 Contact: linux-block@vger.kernel.org
14 Description:
15 (RO) The path of the backing file that the loop device maps its
16 data blocks to.
17
18 What: /sys/block/loopX/loop/offset
19 Date: Aug, 2010
20 KernelVersion: v2.6.37
21 Contact: linux-block@vger.kernel.org
22 Description:
23 (RO) Start offset (in bytes).
24
25 What: /sys/block/loopX/loop/sizelimit
26 Date: Aug, 2010
27 KernelVersion: v2.6.37
28 Contact: linux-block@vger.kernel.org
29 Description:
30 (RO) The size (in bytes) that the block device maps, starting
31 from the offset.
32
33 What: /sys/block/loopX/loop/partscan
34 Date: Aug, 2011
35 KernelVersion: v3.10
36 Contact: linux-block@vger.kernel.org
37 Description:
38 (RO) Shows if automatic partition scanning is enabled for the
39 device or not ("1" or "0"). This can be requested individually
40 per loop device during its setup by setting LO_FLAGS_PARTSCAN in
41 in the ioctl request. By default, no partition tables are
42 scanned.
43
44 What: /sys/block/loopX/loop/dio
45 Date: Aug, 2015
46 KernelVersion: v4.10
47 Contact: linux-block@vger.kernel.org
48 Description:
49 (RO) Shows if direct IO is being used to access backing file or
50 not ("1 or "0").
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