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# See https://www.kernel.org/doc/Documentation/ABI/testing/procfs-diskstats
#
# reads completed successfully
UserParameter=custom.vfs.dev.read.ops[*],cat /proc/diskstats | egrep $1 | head -1 | awk '{print $$4}'
# sectors read
UserParameter=custom.vfs.dev.read.sectors[*],cat /proc/diskstats | egrep $1 | head -1 | awk '{print $$6}'
# time spent reading (ms)
UserParameter=custom.vfs.dev.read.ms[*],cat /proc/diskstats | egrep $1 | head -1 | awk '{print $$7}'
# writes completed
UserParameter=custom.vfs.dev.write.ops[*],cat /proc/diskstats | egrep $1 | head -1 | awk '{print $$8}'
# sectors written
UserParameter=custom.vfs.dev.write.sectors[*],cat /proc/diskstats | egrep $1 | head -1 | awk '{print $$10}'
# time spent writing (ms)
UserParameter=custom.vfs.dev.write.ms[*],cat /proc/diskstats | egrep $1 | head -1 | awk '{print $$11}'
# I/Os currently in progress
UserParameter=custom.vfs.dev.io.active[*],cat /proc/diskstats | egrep $1 | head -1 | awk '{print $$12}'
# time spent doing I/Os (ms)
UserParameter=custom.vfs.dev.io.ms[*],cat /proc/diskstats | egrep $1 | head -1 | awk '{print $$13}'
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