diff options
| -rw-r--r-- | testsuite/systemtap.examples/io/mbrwatch.meta | 6 | ||||
| -rwxr-xr-x | testsuite/systemtap.examples/io/mbrwatch.stp | 9 |
2 files changed, 15 insertions, 0 deletions
diff --git a/testsuite/systemtap.examples/io/mbrwatch.meta b/testsuite/systemtap.examples/io/mbrwatch.meta new file mode 100644 index 00000000..0ff88b13 --- /dev/null +++ b/testsuite/systemtap.examples/io/mbrwatch.meta @@ -0,0 +1,6 @@ +title: Monitor read/write of MBR (boot sector) area of block devices +name: mbrwatch.stp +keywords: io monitoring +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 . | awk '{print $4}' | head -1`" diff --git a/testsuite/systemtap.examples/io/mbrwatch.stp b/testsuite/systemtap.examples/io/mbrwatch.stp new file mode 100755 index 00000000..9d621619 --- /dev/null +++ b/testsuite/systemtap.examples/io/mbrwatch.stp @@ -0,0 +1,9 @@ +#! /usr/bin/env stap + +probe ioblock.request { + if (bdev==bdev_contains && sector<4) { + printf("device %s sector %d %s, process %s[%d]\n", + devname, sector, (rw==BIO_READ ? "read":"write"), execname(), pid()) + print_backtrace() + } +} |