1*4882a593SmuzhiyunWhat: /sys/block/loopX/loop/autoclear 2*4882a593SmuzhiyunDate: Aug, 2010 3*4882a593SmuzhiyunKernelVersion: v2.6.37 4*4882a593SmuzhiyunContact: linux-block@vger.kernel.org 5*4882a593SmuzhiyunDescription: 6*4882a593Smuzhiyun (RO) Shows if the device is in autoclear mode or not ( "1" or 7*4882a593Smuzhiyun "0"). Autoclear (if set) indicates that the loopback device will 8*4882a593Smuzhiyun self-distruct after last close. 9*4882a593Smuzhiyun 10*4882a593SmuzhiyunWhat: /sys/block/loopX/loop/backing_file 11*4882a593SmuzhiyunDate: Aug, 2010 12*4882a593SmuzhiyunKernelVersion: v2.6.37 13*4882a593SmuzhiyunContact: linux-block@vger.kernel.org 14*4882a593SmuzhiyunDescription: 15*4882a593Smuzhiyun (RO) The path of the backing file that the loop device maps its 16*4882a593Smuzhiyun data blocks to. 17*4882a593Smuzhiyun 18*4882a593SmuzhiyunWhat: /sys/block/loopX/loop/offset 19*4882a593SmuzhiyunDate: Aug, 2010 20*4882a593SmuzhiyunKernelVersion: v2.6.37 21*4882a593SmuzhiyunContact: linux-block@vger.kernel.org 22*4882a593SmuzhiyunDescription: 23*4882a593Smuzhiyun (RO) Start offset (in bytes). 24*4882a593Smuzhiyun 25*4882a593SmuzhiyunWhat: /sys/block/loopX/loop/sizelimit 26*4882a593SmuzhiyunDate: Aug, 2010 27*4882a593SmuzhiyunKernelVersion: v2.6.37 28*4882a593SmuzhiyunContact: linux-block@vger.kernel.org 29*4882a593SmuzhiyunDescription: 30*4882a593Smuzhiyun (RO) The size (in bytes) that the block device maps, starting 31*4882a593Smuzhiyun from the offset. 32*4882a593Smuzhiyun 33*4882a593SmuzhiyunWhat: /sys/block/loopX/loop/partscan 34*4882a593SmuzhiyunDate: Aug, 2011 35*4882a593SmuzhiyunKernelVersion: v3.10 36*4882a593SmuzhiyunContact: linux-block@vger.kernel.org 37*4882a593SmuzhiyunDescription: 38*4882a593Smuzhiyun (RO) Shows if automatic partition scanning is enabled for the 39*4882a593Smuzhiyun device or not ("1" or "0"). This can be requested individually 40*4882a593Smuzhiyun per loop device during its setup by setting LO_FLAGS_PARTSCAN in 41*4882a593Smuzhiyun in the ioctl request. By default, no partition tables are 42*4882a593Smuzhiyun scanned. 43*4882a593Smuzhiyun 44*4882a593SmuzhiyunWhat: /sys/block/loopX/loop/dio 45*4882a593SmuzhiyunDate: Aug, 2015 46*4882a593SmuzhiyunKernelVersion: v4.10 47*4882a593SmuzhiyunContact: linux-block@vger.kernel.org 48*4882a593SmuzhiyunDescription: 49*4882a593Smuzhiyun (RO) Shows if direct IO is being used to access backing file or 50*4882a593Smuzhiyun not ("1 or "0"). 51