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Re: Systemtap scripts unable to compile on RHEL4 U2
- From: "Frank Ch. Eigler" <fche at redhat dot com>
- To: systemtap at sources dot redhat dot com
- Date: Wed, 28 Sep 2005 07:05:33 -0400
- Subject: Re: Systemtap scripts unable to compile on RHEL4 U2
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