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Created attachment 813516 [details]
Descrition of cross-vm feature and testing ideas

A new feature was recently added to the systemtap master branch which will allow users to perform cross-vm instrumentation using a virtio-serial channel. (Related commits 59bbd46 to 765a5d6).

It would be great if we could rebase to include this feature. I've attached a document providing more details on the feature and how it could be tested.

Thanks,

Jonathan

As a test, I successfully ran check.exp with all the examples modified to run on my virtual machine. I used the following one-liner (from the testsuite/systemtap.examples directory):

find . -iname '*.meta' | xargs -n 1 sed -i '/^test_installcheck: stap/ s/$/ --remote libvirt:TestVM/'

Hope this helps!

The last_100_frees example seems to be failing because of:

WARNING: cannot find module /usr/lib64/libc-2.17.so debuginfo: No DWARF information found [man warning::debuginfo]
semantic error: while resolving probe point: identifier 'process' at last_100_frees.stp:5:7
        source: probe process("/lib*/libc.so.*").function("free") [...]

IOW glibc-debuginfo not installed.  The testsuite does not rpm-prereq it,
but this test case needs it.

This request was resolved in Red Hat Enterprise Linux 7.0.

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