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systemtap
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title: Monitor Read/Write of the Boot Sector Area of Block Devices name: mbrwatch.stp version: 1.0 author: anonymous keywords: io monitoring disk simple subsystem: io status: proposed exit: user-controlled output: trace scope: system-wide description: The mbrwatch.stp script reports any attempted reads/writes of the first few sectors of a raw block device. test_check: stap -p4 mbrwatch.stp test_installcheck: stap mbrwatch.stp -c "dd of=/dev/null count=1 if=/dev/`grep -v major /proc/partitions | grep . | grep -v 'sr[0-9]' | awk '{print $4}' | head -1`"