Re: Systemtap scripts unable to compile on RHEL4 U2

["Frank Ch. Eigler" <fche@redhat.com>]

Hi -

wcohen wrote:

> [...] SystemTap should be a bit more vocal when it is unable to find
> any debuginfo for the kernel being instrumented [...]

That's true.  At one point, it used to say so.


parasadav wrote:

> 1) Is it not a good idea as part of the very first check translator
> can do a version check between the debug info it is using and the
> version of the binary where it is going to insert probes?

While such a check would be prudent, at the moment it will never fail,
as systemtap/elfutils can select only the debuginfo for the currently
running kernel version/release.  It doesn't matter if other debuginfo
versions are installed - they won't be looked at.  (But see bug
#1145.)

> 2) If a customer upgrades the OS release how do we make sure the
> corresponding debug info matches without corresponding debug RPM's
> shipped.

We can't make sure of such a thing.  Users will need to update their
debuginfo's along with their kernels.  Users of RH packages may wish
to subscribe to this bug, until debuginfo distribution problems are
solved: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=139767


- FChE