What:		/proc/diskstatsDate:		February 2008Contact:	Jerome Marchand <jmarchan@redhat.com>Description:		The /proc/diskstats file displays the I/O statistics		of block devices. Each line contains the following 14		fields: 		==  ===================================		 1  major number		 2  minor number		 3  device name		 4  reads completed successfully		 5  reads merged		 6  sectors read		 7  time spent reading (ms)		 8  writes completed		 9  writes merged		10  sectors written		11  time spent writing (ms)		12  I/Os currently in progress		13  time spent doing I/Os (ms)		14  weighted time spent doing I/Os (ms)		==  =================================== 		Kernel 4.18+ appends four more fields for discard		tracking putting the total at 18: 		==  ===================================		15  discards completed successfully		16  discards merged		17  sectors discarded		18  time spent discarding		==  =================================== 		Kernel 5.5+ appends two more fields for flush requests: 		==  =====================================		19  flush requests completed successfully		20  time spent flushing		==  ===================================== 		For more details refer to Documentation/admin-guide/iostats.rst